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LTC1841/LTC1842/LTC1843 Ultralow Power Dual Comparators with Reference
FEATURES
s s
DESCRIPTION
The LTC (R)1841/LTC1842/LTC1843 are ultralow power dual comparators with built-in reference (LTC1842/LTC1843). The comparators feature less than 5.7A supply current over temperature, a 1.182V 1% reference, programmable hysteresis and open-drain outputs that sink current. The reference output can drive a bypass capacitor of up to 0.01F without oscillation. The LTC1841 operates from a single 2V to 11V supply or a dual 1V to 5.5V supply. The LTC1842/LTC1843 operate from a single 2.5V to 11V supply or a dual 1.25V to 5.5V supply. The LTC1842/LTC1843 hysteresis is easily programmed by using two resistors and the HYST pin. The comparators' input operates from the negative supply to within 1.3V of the positive supply. The comparators' output stage can typically sink greater than 20mA. By eliminating the cross-conduction current that normally happens when the comparators change logic states, power supply glitches are eliminated. The LTC1841/LTC1842/LTC1843 are available in SO-8 packages.
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Ultralow Quiescent Current: 3.5A Typ Open-Drain Outputs Typically Sink Greater Than 20mA Wide Supply Range: (LTC1841) Single: 2V to 11V Dual: 1V to 5.5V Input Voltage Range Includes the Negative Supply Reference Output Drives 0.01F Capacitor Adjustable Hysteresis 12s Propagation Delay with 10mV Overdrive No Current Spike When Switching
APPLICATIONS
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Battery-Powered System Monitoring Threshold Detectors Window Comparators Oscillator Circuits
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Single Li-Ion Cell to 5V Supply
1-CELL Li-Ion BATTERY R1 1.5M
+
C1 100F
R6 25k 7 VCC LTC1843 OUT B 8 6 VIN
L1 10H 7 SW
D1
SUPPLY CURRENT (A)
3 IN A+ R3 1M
6 REF
-
V- 2 HYST 5
R4 20k R5 1.1M
+
R2 100k
-
4 IN B -
LT1302-5 Si9924DY 3 SHDN IT 8 4 PGND SENSE VC GND 2 RC 20k CC 0.0F 1
OUTPUT 5V 600mA
+
C2 100F
+
OUT A 1
R7 500k
LBO
1841/43 TA01
C1, C2: SANYO OS-CON D1: MOTOROLA MBRS130LT3 L1: COILTRONICS CTX10-3
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U
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LTC1843 Supply Current vs Supply Voltage
5 TA = 25C
4
3
2
1
0
0
2
6 8 4 SUPPLY VOLTAGE (V)
10
12
1841/43 TA02
1
LTC1841/LTC1842/LTC1843
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Voltage V + to V - ................................................12V to - 0.3V IN +, IN -, HYST ................. (V + + 0.3V) to (V - - 0.3V) REF ................................... (V + + 0.3V) to (V - - 0.3V) OUT ................................................ 12V to (V - - 0.3V) Current IN +, IN -, HYST ................................................. 20mA REF ................................................................... 20mA OUT .................................................................. 50mA
PACKAGE/ORDER INFORMATION
TOP VIEW OUT A 1 V IN A
- +
8 7 6 5
OUT B V
+ +
OUT A 1 V- 2 IN A
+
2 3
IN B
3
IN A - 4
IN B -
IN B + 4
S8 PACKAGE 8-LEAD PLASTIC SO
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 150C, JA = 125C/ W
TJMAX = 150C, JA = 125C/ W
ORDER PART NUMBER LTC1841CS8 LTC1841IS8
S8 PART MARKING 1841 1841I
ORDER PART NUMBER LTC1842CS8 LTC1842IS8
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER Power Supply V+ ICC VOS IIN VIN PSRR CMRR VHYST Supply Voltage Range Supply Current Comparator Input Offset Voltage Input Leakage Current (IN +, IN -) Comparator Input Voltage Range Power Supply Rejection Ratio Common Mode Rejection Ratio Hysteresis Input Voltage Range LTC1841 LTC1842/LTC1843 CONDITIONS
V + = 5V, V - = 0V, TA = 25C unless otherwise noted.
MIN
q q q
HYST = REF (Note 2) (Note 3) IN + = IN - = 2.5V (LTC1841), IN + = IN - = VREF (LTC1842/LTC1843)
Comparator
q q q
V + = 2V to 11V (LTC1841), V + = 2.5V to 11V (LTC1842/LTC1843) VCM = V - to (V + - 1.3V) LTC1841 LTC1842/LTC1843
q q
2
U
U
W
WW U
W
OUT Short-Circuit Duration (V + 5.5V) ...... Continuous Power Dissipation ............................................. 500mW Operating Temperature Range LTC1841C/LTC1842C/LTC1843C ........... 0C to 70C LTC1841I/LTC1842I/LTC1843I .......... - 40C to 85C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C
TOP VIEW 8 7 6 5 OUT B V+ REF HYST
OUT A 1 V
- +
TOP VIEW 8 7 6 5 OUT B V+ REF HYST
2 3
IN A
IN B - 4
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 150C, JA = 125C/ W
S8 PART MARKING 1842 1842I
ORDER PART NUMBER LTC1843CS8 LTC1843IS8
S8 PART MARKING 1843 1843I
TYP
MAX 11 11
UNITS V V A mV nA V mV/V mV/V V
2.0 2.5 3.5 3 0.01 V- 0.1 0.1 VREF - 50mV
5.7 10 1.0 V + - 1.3V 1 1 VREF
LTC1841/LTC1842/LTC1843
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER tPD ILEAK VOL VREF Propagation Delay Output Leakage Current Output Low Voltage Reference Voltage CONDITIONS
V + = 5V, V - = 0V, TA = 25C unless otherwise noted.
MIN TYP 12 4
q q
MAX
UNITS s s
COUT = 10pF, RPULL-UP = 100k Overdrive = 10mV Overdrive = 100mV VOUT = 12V (Note 2) IOUT = 1.8mA No Load 25C 0C to 70C - 40C to 85C
q q q q
1
100 V - + 0.4V
nA V V V V mV mV mV VRMS
Reference (LTC1842/LTC1843) 1.174 1.170 1.164 1 1.75 100 1.182 1.190 1.194 1.200 3 4 6
VREF Load Regulation
ISOURCE = 1mA ISINK =10A
en
Voltage Noise
100Hz to 100kHz
V + = 3V, V - = 0V, TA = 25C unless otherwise noted.
SYMBOL PARAMETER Power Supply V+ ICC VOS IIN VIN PSRR CMRR VHYST tPD ILEAK VOL VREF Supply Voltage Range Supply Current Comparator Input Offset Voltage Input Leakage Current (IN +, IN -) Comparator Input Voltage Range Power Supply Rejection Ratio Common Mode Rejection Ratio Hysteresis Input Voltage Range Propagation Delay Output Leakage Current Output Low Voltage Reference Voltage V + = 2V to 11V (LTC 1841), V + = 2.5V to 11V (LTC1842/LTC1843) VCM = V - to (V + - 1.3V) LTC1841 LTC1842/LTC1843 COUT = 10pF, RPULL-UP = 100k Overdrive = 10mV Overdrive = 100mV VOUT = 12V (Note 2) IO = 0.8mA No Load 25C 0C to 70C - 40C to 85C
VREF Load Regulation q q q q q q q q VREF - 50mV
CONDITIONS LTC1841 LTC1842/LTC1843 HYST = REF (Note 2) (Note 3) IN + = IN - = 1.5V (LTC1841), IN + = IN - = VREF (LTC1842/LTC1843)
q q q
MIN 2.0 2.5
TYP
MAX 11 11
UNITS V V A mV nA V mV/V mV/V V s s
3.5 3 0.01 V- 0.1 0.1 14 5 1
5.5 10 1 V + - 1.3V 1 1 VREF
Comparator
q q q
100 V - + 0.4V
nA V V V V mV mV mV VRMS
Reference (LTC1842/LTC1843) 1.174 1.170 1.164 2 1.75 100 Note 2: IN + = IN - + 80mV, output is in high impedance state. Note 3: VCM = 1/2(V + - V -) for LTC1841, VCM = VREF for LTC1842/ LTC1843. 1.182 1.190 1.194 1.200 6 4 6
ISOURCE = 1mA ISINK =10A
en
Voltage Noise
100Hz to 100kHz
The q denotes specifications which apply over the full operating temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
3
LTC1841/LTC1842/LTC1843 TYPICAL PERFORMANCE CHARACTERISTICS
Comparator Response Time vs Input Overdrive, with RPULL-UP = 5k
INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V)
4 3 2 1 0 TA = 25C
OUTPUT VOLTAGE (V)
5 100mV 50mV 10mV 20mV
INPUT VOLTAGE (mV)
0 100 -1 0 2 4 6 RESPONSE TIME (s) 8 10
Comparator Short-Circuit Sink Current vs Supply Voltage
200 180 160 140 120 100 80 60 40 20 0 OUT CONNECTED TO V + TA = 25C
RESPONSE TIME (s)
SINK CURRENT (mA)
0
1
2
345678 SUPPLY VOLTAGE (V)
Comparator Response Time at Low Supply Voltage
10000
2.5
OUTPUT VOLTAGE HIGH (V)
RESPONSE TIME (s)
1000 20mV OVERDRIVE 100
10
100mV OVERDRIVE
1 1.0 1.1 1.2 1.3 1.4 SUPPLY VOLTAGE (V) 1.5 1.6
4
UW
Comparator Response Time vs Input Overdrive, with RPULL-UP = 5k
5 4 3 2 1 0 TA = 25C 100mV 50mV 20mV 10mV
100 0 -1 0 2 4 6 8 10 12 14 16 18 RESPONSE TIME (s)
1440/1/2/3 G02
1440/1/2/3 G01
Comparator Response Time vs Load Capacitance with 100mV Input Overdrive
12
10
t PHL
8
6
t PLH
4
2
9 10
0
20
60 80 40 LOAD CAPACITANCE (nF)
100
1440/1/2/3 G03
1440/1/2/3 G04
Comparator Output Voltage Low vs Load Current
TA = 25C 2.0 V + = 2V V + = 5V 1.0 V + = 3V
1.5
0.5
0
0
10
50 60 20 30 40 LOAD CURRENT (mA)
70
80
1440/1/2/3 G05
1440/1/2/3 G06
LTC1841/LTC1842/LTC1843 TYPICAL PERFORMANCE CHARACTERISTICS
LTC1842/LTC1843 Hysteresis Control
POSITIVE-TO-NEGATIVE INPUT VOLTAGE (mV)
80 60 OUTPUT HIGH
SUPPLY CURRENT (A)
40 20 0 -20 -40 -60 -80 0 10 30 VREF - VHYST (mV) 20 40 50 OUTPUT LOW
Reference Output Voltage vs Output Load Current
1.190 VCC = 5V REFERENCE OUTPUT VOLTAGE (V)
REFERENCE OUTPUT VOLTAGE (V)
1.185 SOURCE 1.180 1.175 1.170 1.165 1.160 1.155 0 0.5 1.0 1.5 2.0 2.5 3.0 OUTPUT LOAD CURRENT (mA) 3.5
REFERENCE VOLTAGE (V)
UW
LTC1842/LTC1843 Supply Current vs Temperature
4.5
4.0
V + = 5V V - = -5V
3.5
3.0
V + = 5V V - = 0V V + = 3V V - = 0V
2.5
2.0 -60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (C)
1440/1/2/3 G08
1440/1/2/3 G07
Reference Output Voltage vs Output Load Current (Sink)
1.200 V CC = 2V 1.195 V CC = 5V 1.190 1.185 SINK 1.180 1.175 1.170
0
25 10 15 20 5 OUTPUT LOAD CURRENT (A)
30
1841/2/3 G09
1440/1/2/3 G10
Reference Voltage vs Temperature
1.186 1.184 1.182 1.180 1.178 1.176 1.174 1.172 1.170 -60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (C)
1440/1/2/3 G11
5
LTC1841/LTC1842/LTC1843
PIN FUNCTIONS
OUT A (Pin 1): Comparator A Open-Drain Output. Output can typically sink greater than 20mA. V - (Pin 2): Negative Supply. IN A+ (Pin 3): Noninverting Input of Comparator A. Input common mode range extends from V - to V + - 1.3V. Input current is typically 10pA at 25C. IN A - (Pin 4) (LTC1841): Inverting Input of Comparator A. Input common mode range extends from V - to V + - 1.3V. Input current is typically 10pA at 25C. IN B+ (Pin 4) (LTC1842): Noninverting Input of Comparator B. Input common mode range extends from V - to V + - 1.3V. Input current is typically 10pA at 25C. IN B - (Pin 4) (LTC1843): Inverting Input of Comparator B. Input common mode range extends from V - to V + - 1.3V. Input current is typically 10pA at 25C. IN B - (Pin 5) (LTC1841): Inverting Input of Comparator B. Input common mode range extends from V - to V + - 1.3V. Input current is typically 10pA at 25C. HYST (Pin 5) (LTC1842/LTC1843): Hysteresis Input. Connect to REF if not used. Input voltage range is from VREF to VREF - 50mV. IN B + (Pin 6) (LTC1841): Noninverting Input of Comparator B. Input common mode range extends from V - to V + - 1.3V. Input current is typically 10pA at 25C. REF (Pin 6) (LTC1842/LTC1843): Reference Output. 1.182V with respect to V -. Can typically source greater than 1mA and sink 10A at 25C. Can drive 0.01F bypass capacitor without oscillation. V + (Pin 7) (LTC1841): Positive Supply. 2V to 11V. V + (Pin 7) (LTC1842/LTC1843): Positive Supply. 2.5V to 11V. OUT B (Pin 8): Comparator B Open-Drain Output. Output can typically sink greater than 20mA.
1 OUT A 2 LTC1842
1 OUT A 2 LTC1841 OUT B 8 7 V- V+
6
U
U
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+
3 IN A+ 4 IN A-
A
B
-
-
+
IN B + 6 IN B - 5
1841 PD
OUT B 8 7
V-
A
B
V+
+
3 IN A+
-
+
-
REF 6 HYST 5
4 IN B +
V-
1842 PD
1 OUT A 2
LTC1843
OUT B 8 7
V-
A
B
V+
+
3 IN A+
-
-
+
REF 6 HYST 5
4 IN B -
V-
1843 PD
LTC1841/LTC1842/LTC1843
APPLICATIONS INFORMATION
The LTC1841/LTC1842/LTC1843 are dual micropower comparators with a built-in 1.182V reference (LTC1842/ LTC1843). Features include programmable hysteresis, wide supply voltage range (2V to 11V) and the ability for the reference to drive up to a 0.01F capacitor without oscillation. The comparators' open-drain outputs can typically sink greater than 20mA and the supply current glitches that normally occur when switching logic states have been eliminated. Power Supplies The comparators operate from a single 2V to 11V (2.5V to 11V for LTC1842/LTC1843) or dual 1V to 5.5V supply (1.25V to 5.5V for LTC1842/LTC1843). If the reference output is required to source more than 1mA or the supply source impedance is high, V + should be bypassed with a 0.1F capacitor. Comparator Inputs The comparators' input can swing from the negative supply V - to within 1.3V (max) of the positive supply V +. The input can be forced 300mV below V - or above V + without damage and the typical input leakage current is only 10pA. Comparator Outputs Each comparator output is an open-drain pull-down to V - typically capable of sinking greater than 20mA. The low output leakage current while in three-state mode allows a high value pull-up resistor to be used. The open-drain outputs can be wire OR-ed or used in level shifting applications. Voltage Reference The internal bandgap reference has an output voltage of 1.182V referenced to V -. The reference accuracy is 1.5% from - 40C to 85C. It can typically source greater than 1mA and sink up to 10A with a 5V supply. The reference can drive a bypass capacitor of up to 0.01F without oscillation. By inserting a series resistor, capacitance values up to 100F can be used (Figure 1). Figure 3 shows the bypassed reference output with a square wave applied to the V + pin. Resistors R2 and R3 set a 10mV hysteresis voltage band while R1 damps the reference response. Note that the comparator output doesn't trip. Figure 2 shows the resistor value required for different capacitor values to achieve critical damping. Bypassing the reference can help prevent false tripping of the comparators by preventing glitches on V + or reference load transients from disturbing the reference output voltage.
REFERENCE OUTPUT REF R1 LTC1843
RESISTOR VALUE (k)
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U
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C1
V-
1841/43 F01
Figure 1. Damping the Reference Output
100
10
1
0.1 0.001
0.01 0.1 1 CAPACITOR VALUE (F)
10
1841/43 F02
Figure 2. Damping Resistance vs Bypass Capacitor Value
7
LTC1841/LTC1842/LTC1843
APPLICATIONS INFORMATION
7 V+ 3 IN A+ LTC1843 1M OUT A 1 OUT A R2 5V IREF R1 5 HYST V
-
+ -
5V TO 8V R2 10k R3 2.4M R1 430 C1 1F
5 HYST
1841/43 F04
6 REF
V- 2
1841/43 F03a
Figure 3a. Power Supply Transient Test Circuit
8V V+ 5V 2mV/DIV VREF
OUT
2ms/DIV
1841/1843 F03b
Figure 3b. Power Supply Transient Rejection
Hysteresis Hysteresis can be added to the LTC1842/LTC1843 by connecting a resistor (R1) between the REF and HYST pins and a second resistor (R2) from HYST to V - (Figure 4). The difference between the upper and lower threshold voltages, or hysteresis voltage band (VHB), is equal to twice the voltage difference between the REF and HYST pins. As more hysteresis is added, the upper threshold increases the same amount as the low threshold decreases. The maximum voltage allowed between REF and HYST pins is 50mV, producing a maximum hysteresis voltage band of 100mV. The hysteresis band may vary by up to
R2 62.2k R5 10k 4 IN B- R1 294k R4 2.4M V- 2 5 HYST 6 REF
8
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REF LTC1843
R1 =
VHB (2)(IREF)
R2 = 2
(
1.182V - IREF
VHB 2
)
Figure 4. Programmable Hysteresis
15%. If hysteresis is not wanted, the HYST pin should be shorted to REF. Acceptable values for IREF range are from 0.1A to 5A. If 2.4M is chosen for R2, then the value of R1 is equal to the value of VHB. Window Detector The LTC1843 is ideal for use as a micropower window detector as shown in Figure 5. The values of R1, R2 and R3 are selected for a 4.5V undervoltage threshold and a 5.5V overvoltage threshold. R4 and R5 set the hysteresis voltage. The following design procedure can be used to select the component values:
5V VIN 7 R3 1M 3 IN A+ V+ LTC1843 1M
+
OUT A 1
-
+
OUT B 8
-
VOTH = 5.5V VUTH = 4.5V
1841/43 F05
Figure 5. Dual Level Detector
LTC1841/LTC1842/LTC1843
APPLICATIONS INFORMATION
1. Choose the required hysteresis voltage band and calculate values for R4 and R5 according to the formulas in the hysteresis section. In this example, 5mV of hysteresis has been added at the comparator input (VH = VHB/2). Note that the hysteresis apparent at VIN will be larger because of the input resistor divider. 2. Select R1. The leakage current into IN B - is under 1nA so the current through R1 should exceed 100nA, to ensure threshold accuracy. R1 values up to about 10M can be used, but values in the 100k to 1M range are usually easier to deal with. In this example choose R1 = 294k. 3. Calculate R2 + R3. The overvoltage threshold should be set at 5.5V. The design equation is as follows:
VUTH - 1 R2 + R3 = R1 VREF + VH 5.5 = 294k - 1 1.182 + 0.005 = 1.068M
4. Calculate R2. The undervoltage threshold should be set at 4.5V. The design equation is as follows:
R2 = R1 + R2 + R3
(
)V V -V
REF LTH
H
- R1
= 294k + 1.068M = 62.2k
(
) 1.1824-.50.005 - 294k
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Choose R2 = 61.9k (1% standard value) 5. Calculate R3: R3 = (R2 + R3) - R2 = 1.068M - 61.9k = 1.006M Choose R3 = 1M (1% standard value) 6. Verify the resistor values. The equations are as follows, evaluated for the above example: Overvoltage threshold: VOTH = VREF + VH = 5.474V Undervoltage threshold: VUTH = VREF - VH = 4.484V
( (
) R1+ R21+ R3 R
+ ) R1R1R+2R+2R3
R5 where the hysteresis voltage VH = VREF R4
()
9
LTC1841/LTC1842/LTC1843
TYPICAL APPLICATION
WALL ADAPTER 9V
4-CELL BATTERY
130k
0.01F 20k V- 47k 2.4M 2
1842 TA01
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Battery Switchover Circuit
1N5818 Si9433 7 1.1M 3 IN A+ 562k V+ LTC1842 1M LTC1474 STEP-DOWN REGULATOR 1M
OUTPUT 3.3V
+
OUT A 1 LBO
-
5 HYST 4 IN B+
+
OUT B 8
6 REF
-
LTC1841/LTC1842/LTC1843
PACKAGE DESCRIPTION
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254) 0- 8 TYP
0.016 - 0.050 0.406 - 1.270
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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Dimensions in inches (millimeters) unless otherwise noted.
S8 Package 8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 - 0.197* (4.801 - 5.004) 8 7 6 5
0.228 - 0.244 (5.791 - 6.197)
0.150 - 0.157** (3.810 - 3.988)
1 0.053 - 0.069 (1.346 - 1.752)
2
3
4
0.004 - 0.010 (0.101 - 0.254)
0.014 - 0.019 (0.355 - 0.483)
0.050 (1.270) TYP
SO8 0996
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LTC1841/LTC1842/LTC1843
TYPICAL APPLICATION
Low-Battery Load Disconnect and Charge Termination
Si9924DY VIN 1-CELL Li-Ion BATTERY 7 2.55M 4 IN B- V+ LTC1843 2M LBO AT VIN = 3V
RELATED PARTS
PART NUMBER LT 1178/LT1179 LT1351 LT1352/LT1353 LTC1440/LTC1540 LTC1441/LTC1442 LTC1443/LTC1444/LTC1445 LTC1474 LT1495 LT1521 LTC1541/LTC1542 LT1634
(R)
DESCRIPTION Dual/Quad 17A Precision Single Supply Op Amps Single 250A, 3MHz, 200V/s Op Amp with Shutdown Dual/Quad 250A, 3MHz, 200V/s Op Amps Micropower Comparator with 1% Reference Micropower Dual Comparator with 1% Reference Micropower Quad Comparator with 1% Reference Low Quiescent Current High Efficiency Step-Down Switching Regulator 1.5A Max, Dual Precision Rail-to-Rail Input and Output Op Amp 300mA Low Dropout Regulator with Micropower Quiescent Current and Shutdown Micropower Op Amp, Comparator and Reference Micropower Precision Shunt Voltage Reference
C-Load is a trademark of Linear Technology Corporation.
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX: (408) 434-0507 q www.linear-tech.com
U
- +
OUT B 8
2M
453k
3 IN A+ 1.2M
+ -
OUT A 1 FULL CHARGE AT VIN = 4.2V
6 REF
V- 10k 2
HYST 5
1.2M
1841/43 TA03
COMMENTS 70V Max VOS, 5nA Max IBIAS C-LoadTM Op Amp Stable Driving Any Capacitive Load C-Load Op Amps Stable Driving Any Capacitive Load 1.182V 1% Reference, 10mV (Max) Input Offset 1.182V 1% Reference (LTC1442) LTC1443 Has 1.182V Reference, LTC1444/LTC1445 Have 1.221V Reference and Adjustable Hysteresis 10A Standby Current, 92% Efficiency, Space Saving 8-Pin MSOP Package 375V Max VOS, 250pA IBIAS, 25pA IOS 0.5V Dropout Voltage, 12A Quiescent Current, Adjustable Output 3V, 3.3V and 5V Fixed 1.200V 0.8% Reference (LTC1541) Op Amp Outputs Stable with 1000pF Load 1.25V Output, 10A Operating Current, 0.1% Initial Accuracy 10ppm/C Max Drift
184123f LT/TP 1298 4K * PRINTED IN USA
(c) LINEAR TECHNOLOGY CORPORATION 1998

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