AAT3112
500mA High Efficiency Charge Pump
for White LED Flash Applications
Typical Characteristics-AAT3112-5.0V
VIN = 3.5V, CIN = COUT = 10μF, C1 = C2 = 1μF; TA = 25°C, unless otherwise noted.
Load Transient Response
(VIN = 3.0V)
Load Transient Response
(VIN = 4.2V)
IOUT
(200mA/div)
IOUT
(200mA/div)
VOUT
(20mV/div)
VOUT
(20mV/div)
Time (50µs/div)
Time (50µs/div)
Input and Output Ripples
(IOUT = 50mA @ VIN = 3.5V)
Input and Output Ripples
(IOUT = 100mA @ VIN = 3.5V)
VIN
AC Coupled
(20mV/div)
VIN
AC Coupled
(20mV/div)
VOUT
AC Coupled
(20mV/div)
VOUT
AC Coupled
(20mV/div)
Time (5µs/div)
Time (5µs/div)
Output Current vs. Input Voltage
(500ms Pulse Time; VOUT > 4.5V)
Output Current vs. Input Voltage (70°C)
(VOUT > 4.5V)
1000
900
800
700
600
500
400
300
200
100
0
800
700
600
500
400
300
200
100
0
50ms
100ms
200ms 300ms 500ms
3.0
3.5
4.0
4.5
5.0
2.5
3.0
3.5
4.0
4.5
Input Voltage (V)
Input Voltage (V)
10
3112.2007.01.1.5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
