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Advanced Analog Technology, Inc.
AAT1403A
Details are subject to change without notice
SIX-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY
FEATURES
Complete PWM Power Control Circuitry Input Voltage Range: 1.4V to 6.5V Low Start-Up Voltage: 1.4V (CH6) Separate On/Off Control for CH1~CH6 Supports Synchronous Boost Rectification (CH6) Supports Synchronous Buck Rectification (CH1, 5) Supports Boost Conversion (CH2, 4) Supports White LED Driver (CH4) Supports Inverting Conversion (CH3) Totem Pole Output Short Circuit Protection VQFN40 and LQFP48 Package Oscillator Frequency: 500 kHz (15%)
GENERAL DESCRIPTION
The AAT1403A provides an integrated six-channel pulse-width-modulation (PWM) solution for the power supply of DC-DC converter; this device offers system engineer flexibility to tailor-make the power supply circuitry for specific applications. Each channel contains its own error amplifier, PWM comparator, dead-time control and output driver. The under-voltage protection, oscillator, short circuit protection and voltage reference circuit are the common features for the six channels. In addition to two boost conversions and one inverting conversion, AAT1403A also has three synchronous rectifiers.
APPLICATIONS
Digital Cameras CCD Imaging Devices Camcorders
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Advanced Analog Technology, Inc.
AAT1403A
PIN CONFIGURATION
(VQFN-40)
(LQFP-48)
FUNCTION TABLE
Condition SD - SD1= "Lo" SD1= "Hi" SD2= "Lo" SD2= "Hi" SD3= "Lo" SD3= "Hi" SD4= "Lo" SD4= "Hi" SD5= "Lo" SD5= "Hi" SD6= "Lo" SD6= "Hi" Channel Status CH1 Off On Off On Off On Off On Off On Off On CH2 CH3 CH4 CH5 CH6
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AAT1403A
PIN DESCRIPTION (VQFN-40)
Pin No
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Name
SD1 SD5 SD6 IE1 IE5 IE6 DTC1 OE1 DTC5 OE5 DTC6 OE6 VB GND
I/O Function
I I I I I I I O I O I O O P P O I I I I I I I O O O I I I O O O O P O O O O O ON/OFF Control for Channel 1 (CH1) ON/OFF Control for Channel 5 (CH5) ON/OFF Control for Channel 6 (CH6) Inverted Input for Error Amplifier 1 (EA1) Inverted Input for Error Amplifier 5 (EA5 Inverted Input for Error Amplifier 6 (EA6) Dead Time Control of Channel 1 (CH1) Output for Error Amplifier 1 (EA1) Dead Time Control of Channel 5 (CH5) Output for Error Amplifier 5 (EA5) Dead Time Control of Channel 6 (CH6) Output for Error Amplifier 6 (EA6) Reference Voltage 2.77V Output Ground Power Supply Reference Voltage 1.26V Output Short Circuit Protect Capacitor Connection Pin ON/OFF Control for Channel 4 (CH4) ON/OFF Control for Channel 3 (CH3) ON/OFF Control for Channel 2 (CH2) Inverted Input 2 for Error Amplifier 4 (EA4) Inverted Input for Error Amplifier 4 (EA4) Inverted Input for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 2 (EA2) Output for Error Amplifier 4 (EA4) Output for Error Amplifier 3 (EA3) Output for Error Amplifier 2 (EA2) Dead Time Control of Channel 4 (CH4) Dead Time Control of Channel 3 (CH3) Dead Time Control of Channel 2 (CH2) CH2 Totem Pole Type Output CH3 Totem Pole Type Output CH4 Totem Pole Type Output CH6 Synchronous Rectifier Side Output Output Buffer Power Supply CH6 Totem Pole Type Output CH5 Totem Pole Type Output CH5 Synchronous Rectifier Side Output CH1 Totem Pole Type Output CH1 Synchronous Rectifier Side Output
VDD
VREF
SCP SD4 SD3 SD2 IE4A IE4 IE3 IE2 OE4 OE3 OE2 DTC4 DTC3 DTC2 OUT2 OUT3 OUT4 OUT6_2 PVDD OUT6_1 OUT5_1 OUT5_2 OUT1_1 OUT1_2
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AAT1403A
PIN DESCRIPTION (LQFP-48)
Pin No
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
Name
NC SD1 SD5 SD6 IE1 IE5 IE6 DTC1 OE1 DTC5 OE5 NC NC DTC6 OE6 VB GND
I/O Function
I I I I I I I O I O I O O P P O I I I I I I I O O O I I I O O O O P O O O O O ON/OFF Control for Channel 1 (CH1) ON/OFF Control for Channel 5 (CH5) ON/OFF Control for Channel 6 (CH6) Inverted Input for Error Amplifier 1 (EA1) Inverted Input for Error Amplifier 5 (EA5) Inverted Input for Error Amplifier 6 (EA6) Dead Time Control of Channel 1 (CH1) Output for Error Amplifier 1 (EA1) Dead Time Control of Channel 5 (CH5) Output for Error Amplifier 5 (EA5)
VDD
VREF
Dead Time Control of Channel 6 (CH6) Output for Error Amplifier 6 (EA6) Reference Voltage 2.77V Output Ground Power Supply Reference Voltage 1.26V Output Short Circuit Protect Capacitor Connection Pin ON/OFF Control for Channel 4 (CH4) ON/OFF Control for Channel 3 (CH3) ON/OFF Control for Channel 2 (CH2)
SCP SD4 SD3 SD2 NC NC IE4A IE4 IE3 IE2 OE4 OE3 OE2 DTC4 DTC3 DTC2 NC NC OUT2 OUT3 OUT4 OUT6_2 PVDD OUT6_1 OUT5_1 OUT5_2 OUT1_1 OUT1_2 NC
Inverted Input 2 for Error Amplifier 4 (EA4) Inverted Input for Error Amplifier 4 (EA4) Inverted Input for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 2 (EA2) Output for Error Amplifier 4 (EA4) Output for Error Amplifier 3 (EA3) Output for Error Amplifier 2 (EA2) Dead Time Control of Channel 4 (CH4) Dead Time Control of Channel 3 (CH3) Dead Time Control of Channel 2 (CH2)
CH2 Totem Pole Type Output CH3 Totem Pole Type Output CH4 Totem Pole Type Output CH6 Synchronous Rectifier Side Output Output Buffer Power Supply CH6 Totem Pole Type Output CH5 Totem Pole Type Output CH5 Synchronous Rectifier Side Output CH1 Totem Pole Type Output CH1 Synchronous Rectifier Side Output
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AAT1403A
BLOCK DAIGRAM
V DD GND PVDD OE1 IE 1 SD 1 DTC1 osc SCP1 O E2 IE 2 SD2 DTC2 CH1 S y n ch ro n o u s EA1 B uck 1 .2 4 5 V O U T1_1
O U T1_2
OUT2 EA2 1 .2 4 5 V SCP2 CH2 B oost
OE3 IE 3 SD 3 D TC3
EA3 0 .7 8 3 V SCP3
CH3 In v e rtin g
OUT3
O E4 IE 4 SD4 IE 4 A D TC4
EA4 1 .2 4 5 V & 0 .3 7 V SCP4
CH4 B o o st (W L E D )
OUT4
O E5 IE 5 SD5 DTC5
CH5 S y n ch ro n o u s EA5 B uck 1 .2 4 5 V SCP5
O U T5_1
O U T5_2
OE6 IE 6 SD6 DTC6
CH6 S y n ch ro n o u s EA6 B oost 1 .2 4 5 V SCP6
O U T6_1
O U T6_2
OSC & SCP & UVLO & V
SCP
REF
V REF VB
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AAT1403A
ABSOLUTE MAXIMUM RATINGS
Parameter Supply Voltage Input Voltage ( IE - , DTC - , SD - ) Symbol VDD VI VO Value 7 VDD Unit V V
Output Voltage Output Current Output Peak Current ( t w O 2s, DutyO 5%) Operating Temperature Range Storage Temperature Range
VDD +0.3 +20 +200
- 20 to + 85 - 45 to + 125
V mA mA
J J
IO
I opeak
TC
Tstorage
RECOMMENDED OPERATING CONDITIONS
Parameter Startup Supply Voltage,CH6 Symbol VDD VDD VI VO Min 1.4 3.0 0.28 Max 6.5 6.5 1.55 VDD Unit V V V
Operating Voltage, VDD (CH1~CH6) Input Voltage, IE - , (IE1~IE6) Output Voltage Output Current, (CH1~CH6) Output Current of Error Amplifier Operating Free-Air Temperature
0 - 20
V mA A
J
IO I OE TC
15
- 60
+ 85
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AAT1403A
ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1)
UNDER VOLTAGE PROTECTION
Parameter Symbol Test Condition Min Typ Max Unit
Upper Threshold Voltage Lower Threshold Voltage Hysteresis ( VUPH - VUPL )
VUPH VUPL VHYS
TC = 25J TC = 25J TC = 25J
2.53 -
2.72 2.47 0.25
2.91 -
V V V
SHORT CIRCUIT PROTECTION CONTROL
Parameter Symbol Test Condition Min Typ Max Unit
Input Threshold Voltage Latch Reset Voltage Short-Circuit Detect Threshold Voltage SCP Terminal Source Current
REFERENCE VOLTAGE
Parameter
Vt VR Vtscd I SCP
CH1, 2, 4,5,6, CH3 TC = 25J
1.220 1.245 1.285 0.28 0.33 0.38 1.4 0.58 0.63 0.68
- 1 .5
V V V
A
- 3 .5 - 2 .5
Symbol
Test Conditions
Min
Typ
Max
Unit
Reference Voltage Short-Circuit Output Current Input Voltage Regulation Output Regulation Reference Voltage Change with Temperature
VREF I os VRI VRO VREF
I REF = -1mA , TC = 25J VREF = 0 I REF = -1mA , VDD = 3.0V to 6.5V I REF = -0.1mA to - 1mA to + 85J
1.227 1.245 1.263
- 35 - 10 - 10 - 17 -8
V mA mV mV %
0.5
10 10 -
VREF TC = - 20 J
-
Note 1: Typical values of all parameters except for
VREF
VREF
is specified at TC =25J .
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AAT1403A
ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.)
EA (ERROR AMPLIFIER)
Parameter Symbol Test Condition
Min
Typ
Max Unit
Threshold Voltage
VTH VTH3 VTH4 VTH4A I IB VIR A VO BW1 VOS+ VOS- I OS+
I OS -
Input Bias Current Input Voltage Range Open-Loop Voltage Gain Unity-Gain Bandwidth Output Voltage Swing Output Sink Current Output Source Current
DEAD-TIME CONTROL
Parameter
CH1,2,5,6 CH3 CH4 CH4 CH1~6 VI = 0.28V to1.55V CH1~6
1.227 0.768 1.227 0.352 0.28 65 1.3 -
1.245 0.783 1.245 0.370 10 83 10 5.0
- 106
1.263 0.798 1.263 0.388 20 1.55 0.2 - 60
V
nA V dB MH z V mA A
OE=0.7V OE=0.7V
2.5 -
Symbol
Test Condition
Min
Typ
Max
Unit
Input Bias Current Input Threshold Voltage (DTC1,2,4,5) Input Threshold Voltage (DTC6) Input Threshold Voltage(DTC3)
I BDTC Vd0 Vd100 V6d0 V6d100 V3d0 V3d100
VDTC = 0.2V to 1.3V
-
-
200
nA V
Duty = 0%, f OSC = 500kHz 0.323 0.423 Duty = 100%, 1.125 1.225 f OSC = 500kHz Duty = 0%, f OSC = 500kHz 0.223 0.323 Duty = 100%, 1.025 1.125 f OSC = 500kHz Duty=0%, f OSC =500kHz Duty=100%, f OSC =500kHz 1.125 1.225 -
V
0.323 0.423
V
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AAT1403A
ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.)
OUTPUT STAGE
Parameter Symbol
ROH Output ON Resistor ROL
SHUTDOWN ( SD - ) Parameter High Level SD - Low Level SD - Input Current OPERATING CURRENT
Parameter Symbol
Min I O = - 15mA (CH1~CH5) -
Test Condition
Typ
Max
Unit
18 9 16 9
30 15 25 15
I O = -15mA (CH6) I O = 15mA (CH1~CH5) I O = 15mA (CH6)
-
Symbol Test Condition HSD Active Mode LSD Stand-by Mode CH1~CH6
Min 1.4 -
Typ 10
Max 0.6 20
Unit V V nA
Test Condition
Supply Current
I DD-OFF SD1~SD6= 0V I DD-ON SD1~SD6= "Hi"
Min -
Typ -
Max 10
Unit A
-
4.8
7.0
mA
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AAT1403A
APPLICATION CIRCUIT
CH1 Synchronous Solution
CH1 Non-Synchronous Solution
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AAT1403A
APPLICATION CIRCUIT
CH2 Solution
CH3 Solution
VIN OE3 OUT3 IE3 Shutdown Control SD3 AAT1403A CH3 Inv erting Vout 3
IE3
VREF VREF DTC3
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AAT1403A
APPLICATION CIRCUIT
CH4 Solution
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AAT1403A
APPLICATION CIRCUIT
CH5 Synchronous Solution
CH5 Non-Synchronous Solution
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AAT1403A
APPLICATION CIRCUIT
CH6 Synchronous Solution
CH6 Non-Synchronous Solution
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AAT1403A
CH6 Timing Chart
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AAT1403A
CH5 Timing Chart
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AAT1403A
CH1 Timing Chart
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AAT1403A
CH2,4 Timing Chart
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Advanced Analog Technology, Inc.
AAT1403A
CH3 Timing Chart
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AAT1403A
Soft-Start and Shutdown Operation
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AAT1403A
OPERATION CONDITION SETTING
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AAT1403A
PACKAGE DIMENSION
VQFN40 PACKAGE
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AAT1403A
PACKAGE DIMENSION
VQFN40 PACKAGE (CONT.)
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AAT1403A
PACKAGE DIMENSION (CONT.)
VQFN40 PACKAGE (CONT.) DIMENSIONS IN MILLIMETERS
SYMBOL
DIMENSIONS IN INCHES
MIN A A1 b C D D2 E E2 e L y 0.80 0.00 0.225 0.19 5.90 4.650 5.90 4.650 ----0.35 0
TYP 0.90 0.02 0.250 0.20 6.00 4.800 6.00 4.800 0.50 0.40 -----
MAX 1.00 0.05 0.275 0.25 6.10 4.950 6.10 4.950 ----0.45 0.076
MIN 0.031 0 0.009 0.0075 0.232 0.183 0.232 0.183 ----0.014 0
TYP 0.035 0.0008 0.010 0.0080 0.236 0.189 0.236 0.189 0.020 0.016 -----
MAX 0.039 0.0020 0.011 0.0100 0.240 0.195 0.240 0.195 ----0.018 0.003
NOTE: THE TERMINAL #1 IDENTIFIER IS A LASER MARKED FEATURE.
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AAT1403A
PACKAGE DIMENSION
LQFP48 PACKAGE
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Advanced Analog Technology, Inc.
AAT1403A
PACKAGE DIMENSION
LQFP48 PACKAGE (CONT.)
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AAT1403A
PACKAGE DIMENSION
LQFP48 PACKAGE (CONT.) DIMENSIONIN MILLIMETERS
SYMBOL
MIN ----0.05 1.35 0.17 0.09 8.80 6.90 8.80 6.90 ----0.45 ----0C 0
o
TYP --------1.40 0.22 ----9.00 7.00 9.00 7.00 0.50 0.60 1.00 3.5 C ----o
MAX 1.60 0.15 1.45 0.27 0.20 9.20 7.10 9.20 7.10 ----0.75 ----7.0 o C 0.08
A A1 A2 b C E E1 D D1 e L L1
y
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