AAT3172 View Datasheet(PDF) - Advanced Analogic Technologies
Part Name
Description
MFG CO.
'AAT3172' PDF : 15 Pages View PDF
ChargePumpTM
PRODUCT DATASHEET
AAT3172
High Current LED Flash Driver Charge Pump IC
Typical Characteristics
VIN = 3.6V, CIN = 4.7µF, COUT = 2.2µF, C1 = C2 = 1µF, TA = 25°C, unless otherwise noted.
Efficiency vs. Supply Voltage
100
90
50mA/ch
80
VF = 2.8V
70
152mA/ch
60
VF = 3.0V
50
95mA/ch
VF = 2.9V
40
30
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
Supply Voltage (V)
EN
(2V/div)
VOUT
(2V/div)
VSINK
(1V/div)
IIN
(200mA/div)
Turn-On to 1X Mode
(VIN = 4.2V; 50mA/ch Load)
200µs/div
EN
(2V/div)
VOUT
(2V/div)
VSINK
(1V/div)
IIN
(200mA/div)
Turn-On to 1.5X Mode
(VIN = 3.2V; 50mA/ch Load)
200µs/div
EN
(2V/div)
VOUT
(2V/div)
VSINK
(1V/div)
IIN
(500mA/div)
Turn-On to 1X Mode
(VIN = 4.2V; 300mA/ch Load)
500µs/div
EN
(2V/div)
VOUT
(2V/div)
VSINK
(1V/div)
IIN
(500mA/div)
Turn-On to 2X Mode
(VIN = 3.2V; 300mA/ch Load)
500µs/div
EN
(2V/div)
VF
(1V/div)
IIN
(200mA/div)
Turn-Off from 1.5X Mode
(VIN = 3.2V; 50mA/ch Load)
200µs/div
3172.2008.04.1.6
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