View AAT1401_236902.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Advanced Analog Technology, Inc.
AAT1401
Details are subject to change without notice.
FOUR-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY
FEATURES
Complete PWM Power Control Circuitry Input Voltage Range: 3.0V to 6.5V (CH1~CH4) Low Start-Up Voltage: 1.4V (CH4) Separate On/Off Control for CH1~CH4 Supports Synchronous Boost/Buck Rectification (CH1) Supports Synchronous Boost Rectification (CH4) Supports Boost/Buck Conversion (CH2) Supports Boost Conversion (CH3) Supports White LED Driver (CH3) Totem-Pole Output Short Circuit Protection Wide Operating Frequency: 100 kHz to 1MHz
GENERAL DESCRIPTION
The AAT1401 provides an integrated four 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 (DTC) and output driver. The under-voltage protection, oscillator, short circuit protection and voltage reference circuit are the common features for the four channels. In addition to a boost conversion, AAT1401 also has two synchronous rectification systems with alternatives of a synchronous boost or buck on channel one (CH1) and a boost or buck conversion on channel two (CH2).
LQFP48 and VQFN40 Package APPLICATIONS
Camcorders Digital Cameras
CCD Imaging Devices
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 1 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
PIN CONFIGURATION
AAT1401
AAT1401
1
1
(VQFN-40)
(LQFP-48)
FUNCTION TABLE
Condition SHDN "Lo"
SD -
Channel Status CH1 Off Off On Off On Off On Off On CH2 Off CH3 Off CH4 Off
X SD1= "Lo" SD1= "Hi" SD2= "Lo" SD2= "Hi" SD3= "Lo" SD3= "Hi" SD4= "Lo" SD4= "Hi"
"Hi"
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 2 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
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
MC1 SD1 SD4 SHDN IE1 IE4 DTC1 OE1 DTC4 NC OE4 RT CT VB GND VDD
I/O
I I I I I I I O I O O P P O I I I I I O O I I I O O O P P O O O
Function
Boost or Buck Select for CH1 ON/OFF Control for CH1 ON/OFF Control for CH4 Power ON/OFF Control Inverted Input for Error Amplifier 1 (EA1) Inverted Input for Error Amplifier 4 (EA4) Dead Time Control of CH1 Output for Error Amplifier 1 (EA1) Dead Time Control of CH4 Output for Error Amplifier 4 (EA4) External Frequency Setting Resistor External Frequency Setting Capacitor Reference Voltage 2.77V Output Ground Power Supply Reference Voltage 1.245V Output Short Circuit Protection Capacitor Connection Pin ON/OFF Control for CH3 ON/OFF Control for CH2 Inverted Input 2 for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 2 (EA2) Output for Error Amplifier 3 (EA3) Output for Error Amplifier 2 (EA2) Dead Time Control of CH3 Dead Time Control of CH2 Boost or Buck Select for CH2 CH2 Totem Pole Type Output CH3 Totem Pole Type Output CH4 Synchronous Rectifier Side Output Output Buffer Ground Output Buffer Power Supply CH4 Totem Pole Type Output CH1 Totem Pole Type Output CH1 Synchronous Rectifier Side Output
VREF
SCP SD3 NC SD2 IE3A IE3 IE2 OE3 OE2 DTC3 DTC2 MC2 NC OUT2 NC OUT3 OUT4_2 PGND PVDD OUT4_1 NC OUT1_1 OUT1_2
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 3 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
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 NC MC1 SD1 SD4 SHDN IE1 IE4 DTC1 OE1 DTC4 NC OE4 RT CT NC VB NC GND NC VDD
I/O
I I I I I I I O I O O P P O I I I I I O O I I I O O O P P O O O
Function
Boost or Buck Select for CH1 ON/OFF Control for CH1 ON/OFF Control for CH4 Power ON/OFF Control Inverted Input for Error Amplifier 1 (EA1) Inverted Input for Error Amplifier 4 (EA4) Dead Time Control of CH1 Output for Error Amplifier 1 (EA1) Dead Time Control of CH4 Output for Error Amplifier 4 (EA4) External Frequency Setting Resistor External Frequency Setting Capacitor Reference Voltage 2.77V Output Ground Power Supply Reference Voltage 1.245V Output Short Circuit Protection Capacitor Connection Pin ON/OFF Control for CH3 ON/OFF Control for CH2 Inverted Input 2 for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 3 (EA3) Inverted Input for Error Amplifier 2 (EA2) Output for Error Amplifier 3 (EA3) Output for Error Amplifier 3 (EA2) Dead Time Control of CH3 Dead Time Control of CH2 Boost or Buck Select for CH2
VREF
SCP SD3 NC SD2 IE3A IE3 IE2 OE3 OE2 DTC3 DTC2 MC2 NC NC OUT2 NC OUT3 NC OUT4_2 PGND NC PVDD OUT4_1 NC OUT1_1 OUT1_2
CH2 Totem Pole Type Output CH3 Totem Pole Type Output CH4 Synchronous Rectifier Side Output Output Buffer Ground Output Buffer Power Supply CH4 Totem Pole Type Output CH1 Totem Pole Type Output CH1 Synchronous Rectifier Side Output
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 4 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
BLOCK DIAGRAM
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 5 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
ABSOLUTE MAXIMUM RATINGS
Parameter Supply Voltage Input Voltage ( IE - , DTC - , SD - , SHDN) 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, CH4 Supply Voltage, VDD (CH1~CH4) Symbol VDD VDD VI VO Min 3.0 0.28 0 Max 1.4 6.5 1.55 Unit V V V V
Input Voltage, (IE1~IE4) Output Voltage Oscillator Capacitor Oscillator Resistor (Note 1) Oscillator Frequency Output Current, (CH1~CH4) Output Current of Error Amplifier Operating Free-Air Temperature
VDD 560 80 800 15 - 60
+ 85
C OSC R OSC f OSC IO I OE TC
50 10 100 - 20
pF
k
kHz mA
A
J
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 6 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) OSCILLATOR
Parameter Symbol
Frequency "Hi" Level Output Voltage "Lo" Level Output Voltage
f OSC VOSCH VOSCL
Test Condition C OSC = 100pF , R OSC = 35 k
Min
Typ
Max Unit
450
500
550
kHz V V
C OSC = 100pF , R OSC = 35 k C OSC = 100pF , R OSC = 35 k VDD = 3.0V to 6.5V, TC = 25 oC C OSC = 100pF, R OSC = 35 k
0.927 1.025 1.123 0.274 0.323 0.371
Frequency Change with VDD Frequency Change with TC
f V
-
1
5
%
f T
-
1
-
%
UNDER VOLTAGE PROTECTION Parameter Symbol Test Condition VUPH TC = 25 oC Upper Threshold Voltage
Min
Typ
Max Unit
2.53 -
2.72 2.47 0.25
2.91 -
V V V
Lower Threshold Voltage Hysteresis ( VUPH - VUPL )
VUPL VHYS
TC = 25 C TC = 25 C
o
o
SHORT CIRCUIT PROTECTION CONTROL Parameter Symbol Test Condition
Min
Typ
Max Unit
Input Threshold Voltage Latch Reset Voltage Short-Circuit Detection Threshold Voltage SCP Terminal Source Current
Vt VR Vtscd I SCP
CH1,2,3,4 TC = 25 oC
1.220 1.245 1.285 0.58
- 3.5
V V V
A
2.47 0.63
- 2.5
0.68
- 1.5
Note 1: Typical values of all parameters except for
VREF
VREF
(dev) and
f T are specified at TC =25 J .
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 7 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
ELECTRICAL CHARACTERISTICS, SPECIFIED (SEE NOTE 1) (CONT.)
REFERENCE VOLTAGE Parameter
VDD = 5.0V (UNLESS OTHERWISE
Reference Voltage Short-Circuit Output Current Input Voltage Regulation Output Regulation Reference Voltage Change with Temperature
EA (ERROR AMPLIFIER) Parameter
Symbol Test Conditions Min Typ Max o VREF I REF = -1mA , TC = 25 C 1.227 1.245 1.263 I os VREF = 0 - 35 - 17 -8 VRI I REF = -1mA , - 10 10 VDD = 3.0V to 6.5V VRO I REF = -0.1mA to - 10 10 - 1 mA
VREF VREF TC = - 20 J
Unit
V mA mV mV %
to +85J
-
0.5
-
Symbol
Test Condition
Min
Typ
Max Unit
VTH Threshold Voltage VTH3 VTH3A Input Bias Current Input Voltage Range Open-Loop Voltage Gain Unity-Gain Bandwidth Output Voltage Swing Output Sink Current Output Source Current I IB VIR A VO BW1 VOS+ VOS- I OS+ I OS-
CH1,2,4, OE=0.7V CH3
1.227 1.245 1.263 1.242 1.260 1.278 V
CH3 0.352 0.370 0.398 CH1,4, VI = 0.28V to 10 20 nA 1.55V CH1,4 0.28 65 1.3 OE=0.7V OE=0.7V 2.5 83 10 5.0
- 106
1.55 0.2 - 60
V dB MH z V mA A
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 8 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
ELECTRICAL CHARACTERISTICS, VDD = 5.0V (UNLESS OTHERWISE SPECIFIED) (SEE NOTE 1) (CONT.)
DEAD-TIME CONTROL Parameter Input Bias Current (DTC1~DTC4)
Test Condition
Min
Typ
Max Unit
I BDTC VDTC = 0.2V to 1.3V Vd0 Vd100 Duty = 0%, f OSC = 500kHz Duty = 100%, f OSC = 500kHz Duty = 100%, f OSC = 500kHz
-
-
200 -
nA V
Input Threshold Voltage (DTC1,2,3) Input Threshold Voltage (DTC4)
0.323 0.423 -
1.125 1.225 -
V4d 0 Duty = 0%, f OSC = 500kHz V4d100
0.223 0.323 -
1.025 1.125
V
OUTPUT STAGE Parameter
ROH Output ON Resistor ROL
SHUTDOWN ( SD - ) Parameter High Level SD - Low Level SD - Input Current OPERATING CURRENT Parameter
Test Condition Min I O = - 15mA (CH1~CH3) -
Typ
Max
Unit
18 9 16 9
30 15 25 15
I O = -15mA (CH4) I O = 15mA (CH1~CH3) I O = 15mA (CH4)
-

HSD LSD
Test Condition Active Mode Stand-by Mode CH1~CH4
Min 1.4 -
Typ Max 0.6 10 20
Unit V V nA
Test Condition
Min
Typ
Max
Supply Current
I DD-OFF SHDN=0V I DD-ON SHDN="Hi"; SD1~SD4= "Hi"
-
4.8
10 7.0
Unit A
mA
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 9 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
APPLICATION CIRCUIT
CH1 Synchronous Solution
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 10 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
APPLICATION CIRCUIT
CH1 Non-Synchronous Solution
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 11 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
APPLICATION CIRCUIT
CH2 Solution
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 12 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
APPLICATION CIRCUIT
CH3 Solution
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 13 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
APPLICATION CIRCUIT
CH4 Synchronous Solution
CH4 Non-Synchronous Solution
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 14 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
OPERATION CONDITION SETTING
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 15 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
PACKAGE DIMENSION
VQFN40 PACKAGE
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 16 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
PACKAGE DIMENSION
VQFN40 PACKAGE (CONT.)
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 17 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
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.
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 18 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
PACKAGE DIMENSION
LQFP48 PACKAGE
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 19 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
PACKAGE DIMENSION
LQFP48 PACKAGE (CONT.)
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 20 of 21 V 0.1
Advanced Analog Technology, Inc.
AAT1401
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
- xAEWAniN/|-1/2q - - Advanced Analog Technology, Inc. -
Page 21 of 21 V 0.1

▲Up To Search▲

Price & Availability of AAT1401

	To Download AAT1401 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .