AAT2842 Datasheet, PDF (8/21 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.
BENS, FENS High Threshold Voltage
vs. Supply Voltage
1.2
1.1
-40°C
1.0
0.9
0.8
0.7
25°C
85°C
0.6
0.5
0.4
0.3
0.2
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
V_IN (V)
BENS, FENS Low Threshold Voltage
vs. Supply Voltage
1.2
1.1
-40°C
1.0
0.9
0.8
0.7
25°C
0.6
85°C
0.5
0.4
0.3
0.2
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
V_IN (V)
BENS, FENS Latch Timeout
vs. Supply Voltage
400
350
-40°C
300
25°C
250
85°C
200
150
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
V_IN (V)
BENS, FENS Off Timeout vs. Supply Voltage
500
450
400
350
-40°C
300
250
25°C
200
85°C
150
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
V_IN (V)
LDOA Turn On Characteristic
LDOB Turn On Characteristic
ENL
(2V/div)
V_OUT
(500mV/div)
8
Time (50µs/div)
ENL
(2V/div)
V_OUT
(500mV/div)
Time (50µs/div)
2842.2006.10.1.0