AAT3120 Datasheet, PDF (6/14 Pages) Advanced Analogic Technologies – 3-Channel Charge Pump For White LED Applications

Typical Characteristics
Efficiency vs. Input Voltage
(3x20mA)
95
90
V_F = 3.0V V_F = 3.2V V_F = 3.4V
85
80
75
70
65
60
55
50
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1
Input Voltage (V)
AAT3120
3-Channel Charge Pump
For White LED Applications
Efficiency vs. Input Voltage
(3x8.3mA)
95
90
V_F = 3.0V V_F = 3.2V V_F = 3.4V
85
80
75
70
65
60
55
50
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1
Input Voltage (V)
V_IN
(20mV/div)
OUT
(20mV/div)
V_DIODE
(20mV/div)
60mA Load Characteristics
Time (500ns/div)
Charge Pump to Load Switch (60mA)
V_IN
(10mV/div)
OUT
(2V/div)
V_DIODE
(2V/div)
I_IN
(100mA/div)
Time (100µs/div)
Load Switch to Charge Pump (60mA)
V_IN
(10mV/div)
OUT
(2V/div)
V_DIODE
(2V/div)
I_IN
(100mA/div)
Time (100µs/div)
6
3120.2005.11.1.1