AAT3152 View Datasheet(PDF) - Analog Technology Inc
Part Name
Description
MFG CO.
'AAT3152' PDF : 12 Pages View PDF
AAT3152
High Efficiency 1X/1.5X/2X Charge Pump
For White LED Applications
Typical Characteristics
Efficiency vs. Supply Voltage
100
10mA
20mA
VF = 3.1V
VF = 3.4V
90
80
70
60
50
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Supply Voltage (V)
EN
(2V/div)
CP
(2V/div)
VSINK
(500mV/div)
IIN
(200mA/div)
Turn-On to 1X Mode
(VIN = 4.2V; 20mA Load)
100µs/div
EN
(2V/div)
CP
(2V/div)
VSINK
(500mV/div)
IIN
(200mA/div)
Turn-On to 1.5X Mode
(VIN = 3.5V; 20mA Load)
100µs/div
EN
(2V/div)
CP
(2V/div)
VSINK
(500mV/div)
IIN
(200mA/div)
Turn-On to 2X Mode
(VIN = 2.8V; 20mA Load)
100µs/div
EN
(2V/div)
VF
(1V/div)
IIN
(100mA/div)
Turn-Off from 1.5X Mode
(VIN = 3.5V; 20mA Load)
500µs/div
Current Matching vs. Temperature
20.4
20.2 Channel 2
20.0
Channel 4
19.8
19.6
Channel 3 Channel 1
19.4
19.2
19.0
-40
-20
0
20
40
60
80
Temperature (°C)
3152.2005.08.1.2
5
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