AAT2842 Datasheet, PDF (9/21 Pages) Advanced Analogic Technologies – High-Current Charge Pump with S2Cwire™ Control and Dual LDO for Backlight and Flash

AAT2842
High-Current Charge Pump with S²Cwire™
Control and Dual LDO for Backlight and Flash
Typical Characteristics
V_IN = 3.6V; C_IN = 4.7µF; C_OUT = 2.2µF; C₁ = C₂ = 1.0µF; T_A = -40°C to +85°C, unless otherwise noted. Typical
values are at T_A = 25°C.
LDOs A and B Line Regulation
LDOs A and B Load Regulation
1.00
0.50
0.00
-0.50
OUTA
OUTB
1.00
0.50
0.00
-0.50
OUTA
OUTB
-1.00
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 5.3 5.5
Input Voltage (V)
-1.00
0.1
1
10
100
1000
Load Current (mA)
LDOA Line Transient Response
(10mA Load)
V_IN
(400mV/div)
V_OUT
(10mV/div)
V_IN = 3.7V
V_IN = 4.2V
Time (40µs/div)
LDOB Line Transient Response
(10mA Load)
V_IN
(400mV/div)
V_OUT
(10mV/div)
V_IN = 3.7V
V_IN = 4.2V
Time (40µs/div)
LDOA Load Transient Response
(10mA to 200mA Load Step)
I_OUT
(100mA/div)
I_OUT = 200mA
V_OUT
(100mV/div)
2842.2006.10.1.0
Time (20µs/div)
LDOB Load Transient Response
(10mA to 200mA Load Step)
I_OUT
(100mA/div)
V_OUT
(100mV/div)
Time (20µs/div)
9