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| AME, Inc. AME8750 n General Description The AME8750 dual, low dropout, linear regulators operate from Higher V OUT+VDROPOUT to 5.5V input and deliver up to 150mA / 150mA output current each. It has a bypass pin option allows users to decouple the bandgap reference for reducing the output noise. Low dropout voltage and low quiescent current(70A typ.)make them ideal for battery applications. The AME8750 is available with a wide variety of voltage options as standard and can be trimmed to 1.5% accuracy. For protection purpose, AME8750 has both thermal shutdown and current fold-back to prevent device failure under the " worst" of operating conditions. Low-Dropout 150mA / 150mA Dual CMOS Regulator n Functional Block Diagram EN1 ON/OFF Control Error Amp1 Current Limit VOUT1 R11 VR1 Each Circuit R12 VI N GND Error Amp2 Current Limit VR2 Each Circuit Voltage Reference V OUT2 R21 EN2 ON/OFF Control R22 n Features l Very Low Dropout Voltage l Guaranteed 150mA / 150mA Each Output l Accurate to Within 1.5% For Both Outputs l Typical 70 A Quiescent Current l Over-Temperature Shutdown l Current Limiting l Short Circuit Current Fold-back l Noise Reduction Bypass Cap l Power-Saving Shutdwon Mode l All AME's Lead Free Product Meet RoHS Standards n Typical Applications Fixed Version VIN VIN EN V OUT1 VOUT1 AME8750A VOUT2 BYP GND V OUT2 1F 10nF 1F 1F n Applications l Cellular Phones l Palm / Notebook l Battery Power Equipment l Handheld Instruments VIN VIN EN1 VOUT1 V OUT1 AME8750B EN2 GND V OUT2 VOUT2 1F 1F 1F 1 AME, Inc. AME8750 n Pin Configuration SOT-26 Top View 6 5 4 Low-Dropout 150mA / 150mA Dual CMOS Regulator SOT-26 Top View AME 8750AEEY 1. VOUT2 2. GND 6 5 4 AME 8750BEEY 1. VOUT2 2. GND AME8750 3. BYP 4. EN 5. VIN AME8750 3. EN1 4. EN2 5. VIN 1 2 3 6. VOUT1 * Die Attach: Conductive Epoxy 1 2 3 6. VOUT1 * Die Attach: Conductive Epoxy n Pin Description Pin Number AME8750A 1 Pin Name Description Regulator 2 Output. Sources up to 150mA continuous current. Bypass with a 1F (< 0.5 typ ESR) capacitor to GND. Ground. This pin also functions as heatsink. Solder to a large pad or the circuit-board ground plane to maximize thermal dissipation. Reference Noise Bypass. Bypass with a low leakage 10nF ceramic capacitor for reduced nise at both outputs. Shutdown 1 Input. A logic low shuts down regulator 1. If EN1 and EN2 are both low, both regulators and the reference turn off. If either EN1 and EN2 is a logic high, the reference is on. Connect to VIN for normal operation. Shutdown Input. A logic low shuts down both regulators. Connect to VIN for normal operation. Shutdown 2 Input. A logic low shuts down regulator 2. If EN1 and EN2 are both low, both regulators and the reference turn off. If either EN1 and EN2 is a logic high, the reference is on. Connect to VIN for normal operation. Regulator Input. Supply voltage can range from Higher VOUT+VDROPOUT to 5.5V. This input also supplies the onchip reference. Bypass with 1F to GND. Regulator 1 Output. Sources up to 150mA continuous current. Bypass with a 1F (< 0.5 typ ESR) capacitor to GND. AME8750B 1 VOUT2 2 2 GND 3 N/A BYP N/A 3 EN1 4 N/A EN N/A 4 EN2 5 5 VIN 6 2 6 VOUT1 AME, Inc. AME8750 Low-Dropout 150mA / 150mA Dual CMOS Regulator n Ordering Information (contd.) AME8750 x x x x xxxx x Special Feature Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Number of Pins Y: 6 Output Voltage (Both LDOs) Pin Configuration A (SOT-26) Operating Ambient Temperature Range E: -40OC to +85OC Package Type E: SOT-2X Special Feature 1. VOUT2 2. GND 3. BYP 4. EN 5. VIN 6. VOUT1 1. VOUT2 2. GND 3. EN2 4. EN1 5. VIN 6. VOUT1 1825: VOUT1=1.8V Y: Lead free & Low profile VOUT2=2.5V Z: Lead free 1828: VOUT1=1.8V VOUT2=2.8V B (SOT-26) 3 AME, Inc. AME8750 n Ordering Information Part Number AME8750AEEY1828Z AME8750AEEY1828Y AME8750BEEY1828Z AME8750BEEY1828Y AME8750BEEY1825Z AME8750BEEY1825Y Low-Dropout 150mA / 150mA Dual CMOS Regulator Marking* BCKww BCKww BCJww BCJww BBHww BBHww Output Voltage Package VOUT1=1.8V VOUT2=2.8V VOUT1=1.8V VOUT2=2.8V VOUT1=1.8V VOUT2=2.8V VOUT1=1.8V VOUT2=2.8V VOUT1=1.8V VOUT2=2.5V VOUT1=1.8V VOUT2=2.5V SOT-26 TSOT-26 SOT-26 TSOT-26 SOT-26 TSOT-26 Operating Ambient Temperature Range - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC Note:ww represents date code and pls refer to Date Code Rule before Package Dimension. * A line on top of the first letter represents lead free plating such as BCKww. Please consult AME sales office or authorized Rep./Distributor for voltage accuracy and package type availability. 4 AME, Inc. AME8750 n Absolute Maximum Ratings Parameter Input Voltage Output Current Output Voltage ESD Classification Low-Dropout 150mA / 150mA Dual CMOS Regulator Maximum 6 PD /2V IN-(V OUT1+V OUT2) GND-0.3 to VIN +0.3 B* Unit V mA V Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. * HBM B: 2000V~3999V n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature Range Symbol TA TJ Rating -40 to +85 -40 to +125 Unit o C C o n Thermal Information Parameter Thermal Resistance* (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Maximum Junction Temperature Solder Iron (10 Sec)** * Measure JC on center of molding compound if IC has no tab. ** MIL-STD-202G 210F SOT-26 Conductive Epoxy Package Die Attach Symbol JC Maximum 81 Unit o C/W JA 260 PD 400 150 350 mW o C C o 5 AME, Inc. AME8750 n Electrical Specifications Low-Dropout 150mA / 150mA Dual CMOS Regulator Unless specified: TJ=25OC, VIN=Higher VOUT+1V, IOUT1=IOUT2=1mA, CIN=COUT=1.0F, VEN1=VEN2=VIN Typical values are at TJ=25OC Parameter IN Input Supply Voltage Quiescent Current OUT1, OUT2 IOUT=1mA Output Voltage VO 0mA o o Symbol V IN IQ Test Condition Min Note1 Typ Max 5.5 Units V A 70 -1.5 -2 -0.2 V OUT 160 1.5 2 0.2 0.25 % TJ =-40 C to +125 C -0.25 %/V %/mA TJ =-40 oC to +125oC -0.005 +0.0025 0.005 Output Voltage Noise en EN1, EN2 Enable Input Threshold V EH V IN=2.4V to 5.5V V IN=2.4V to 5.5V V IN =5.0V TJ =-40 oC to +125oC EN=0V EN=5V 2.4 0.4 -1 0.5 0.3 1.25 150 20 1 1 ms o o V V A VEL EN Input Bias Current Shutdown Current BYP Start-Up Rise Time Over Temperature Protection Over Temperature Shutdown Over Temperature Hysteresis OTS OTH IEL IEH ISHDN V IN =5.0V, EN1=EN2=0V CB Y P=10nF C C Note1: VIN(min) =Higher VOUT+ V Dropout 6 AME, Inc. AME8750 n Detailed Description The AME8750 is low-dropout, low quiescent-current linear regulatior designed primarily for battery-powered applications. These parts are available with preset output voltage ranging from 1.8V to 3.3V, and the parts can supply loads up 150mA. Low-Dropout 150mA / 150mA Dual CMOS Regulator n Application Information Capacitor Selection and Regulator Stability Use a 1F capacitor on the AME8750A/ AME8750B input and a 1F capacitor on the outputs. Larger input capacitor values and lower ESRs provide better supplynoise rejection and line transient response. Shutdown AME8750A The AME8750A has a single shutdown control input(EN). Drive EN low to shut down both outputs, reducing supply current to 0.3A. Connect EN to a logic-high, or IN, for normal operation. AME8750B The AME8750B has independent shutdown control inputs (EN1 and EN2). Drive EN1 low to shutdown V OUT1. Drive EN2 low to shut down V OUT2. Drive both EN1 and EN2 low to shut down the entire chip, reducing supply current to 0.3mA. Connect both EN1 and EN2 to a logic-high, or IN, for normal operation. PSRR and Operation from Sources Other than Batteries The AME8750A/AME8750B are designed to deliver low dopout voltages and low quiescent currents in batterypowered systems. Power-supply rejection is 54dB at low frequencies. (See the PSRR vs. Frequency graph) Internal P-Channel Pass Transistor The AME8750A/AME8750B feature two 1 P-Channel MOSFET pass transistors. A P-Channel MOSEFT provides several advantages over similar designs using PNP pass transistors, including longer battery life. It requires no base drive, which reduces quiescent current significantly. The AME8750A/AME8750B only consume 70A of quiescent current whether in dropout, light-load, or heavy-load applications. Current Limit The AME8750A/8750B contain two independent current limiters, one for each regulator, which monitor and control the pass transistor' s gate voltage, limiting the guaranteed maximum output current to 150mA minimum. The output can be shorted to ground for an indefinite time without damaging the part. Thermal-Overload Protection Thermal -overload protection limits toatl power dissipation in the AME8750A/AME8750B. When the junction trmperature exceeds TJ=150oC, the themal sensor signals the shutdown logic, turning off the pass transistor and allowing the IC to cool. 7 AME, Inc. AME8750 Quiescent Current vs Input Voltage 140 Low-Dropout 150mA / 150mA Dual CMOS Regulator Dropout Voltage vs Load Current 300 Quiescent Current (uA) O 85 C 100 O Dropout Voltage (mV) 120 125 C 250 O V OUT =2.5V 85J 125J 200 55J 55 C 80 60 40 20 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 25 C O O 150 -5 C -45 C O 25J -45J -5J 100 50 0 0 50 100 150 Input Voltage (V) Load Current (mA) Supply Current vs. Load current 90 80 Dropout Voltage vs Output Voltage Dropout Voltage @ 150mA (mV) 350 300 Supply Current (A) 70 60 50 40 30 20 10 0 0 20 40 60 Both Output Loaded 250 200 150 100 50 80 100 120 140 160 0 1.5 2 2.5 3 3.5 Load Current (mA) Output Voltage (V) Quiescent Current vs Temperature 110 1.82 Output Voltage vs Temperature VOUT =1.8V Quiescent Current @ 5V (A) 100 90 Output Voltage (V) 1.81 1.80 80 1.79 70 1.78 60 50 -50 1.77 0 50 100 o -50 0 50 100 Temperature ( C) Temperature (oC) 8 AME, Inc. AME8750 PSRR vs. Frequency 60 Low-Dropout 150mA / 150mA Dual CMOS Regulator Line Transient Bypass 50 PSRR (dB) 40 30 20 10 0 10 100 1000 10000 100000 1000000 Vout VIN=2.9V VOUT =1.8V ILOAD=50mA Frequency (Hz) 50s/DIV Channel-to-Channel Isolation vs Frequency 100 Load Transient VI N=4.3V ILOAD= 0 to 150mA Channel-to-Channel Isolation (dB) Vout 10 VIN=5V RLOAD=50 1 0.01 0.1 1 10 100 0 10s/DIV Frequency (KHz) Output Noise Spectral Density 10 Load Transient Near Dropout CBP=0F IOUT=1,50,100,150mA Noise(V/OHz) VOUT 1 VIN =VOUT+0.1V 0.1 1 10 100 0 Frequency(kHz) 10s/ DIV 100mA/DIV ILOAD CBP=0.01F I OUT =1,50,100,150mA 20mV/DIV (AC-Coupled) 100mA/DIV ILOAD 20mV/DIV (AC-Coupled) 20mV/DIV (AC-Coupled) 3.5V 4.5V 1V/DIV No-Bypass VIN 9 AME, Inc. AME8750 Shutdown Response Output Voltage (1V/DIV) Low-Dropout 150mA / 150mA Dual CMOS Regulator Shutdown Voltage (1V/DIV) 0 0 RLOAD =100[ 10 AME, Inc. AME8750 n Date Code Rule Marking A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A Date Code W W W W W W W W W W W W W W W W W W W W Year xxx0 xxx1 xxx2 xxx3 xxx4 xxx5 xxx6 xxx7 xxx8 xxx9 Low-Dropout 150mA / 150mA Dual CMOS Regulator n Tape & Reel Dimension SOT-26 P W AME PIN 1 AME Carrier Tape, Number of Components Per Reel and Reel Size Package SOT-26 Carrier Width (W) 8.00.1 mm Pitch (P) 4.00.1 mm Part Per Full Reel 3000pcs Reel Size 1801 mm 11 AME, Inc. AME8750 n Tape & Reel Dimension TSOT-26 P Low-Dropout 150mA / 150mA Dual CMOS Regulator W AME PIN 1 AME Carrier Tape, Number of Components Per Reel and Reel Size Package TSOT-26 Carrier Width (W) 8.00.1 mm Pitch (P) 4.00.1 mm Part Per Full Reel 3000pcs Reel Size 1801 mm 12 AME, Inc. AME8750 n Package Dimension SOT-26 Top View D e Side View Low-Dropout 150mA / 150mA Dual CMOS Regulator SYMBOLS L MILLIMETERS MIN MAX INCHES MIN MAX A A1 H E 1.20REF 0.00 0.30 2.70 1.40 0.15 0.55 3.10 1.80 0.0472REF 0.0000 0.0118 0.1063 0.0551 0.0059 0.0217 0.1220 0.0709 b D c1 S1 E e H L 1 1.90 BSC 2.60 3.00 0.0748 BSC 0.10236 0.11811 0.0146REF o 0.37REF 0 o Front View A 10 0o 10o S1 0.95REF 0.0374REF b TSOT-26 Top View D e Side View A1 SYMBOLS L MILLIMETERS MIN MAX 1.25 0.50 0.25 3.10 1.80 INCHES MIN 0.0354 0.0118 0.0035 0.1063 0.0551 MAX 0.0492 0.0197 0.0098 0.1220 0.0709 A+A1 b H E 0.90 0.30 0.09 2.70 1.40 c D c1 S1 E e H L 1.90 BSC 2.40 3.00 0.07480 BSC 0.09449 0.11811 0.0138BSC o Front View A 0.35BSC 0 o 1 S1 10 0 o 10 o 0.95BSC 0.0374BSC b A1 13 www.ame.com.tw E-Mail: sales@ame.com.tw Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. (c) AME, Inc. , February 2006 Document: 2075-DS8750-C.01 Corporate Headquarter AME, Inc. 2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 U.S.A. (Subsidiary) Analog Microelectronics, Inc. 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489 |
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