AAT2856_08 Datasheet, PDF (6/18 Pages) Advanced Analogic Technologies – High Current Charge Pump with Dual LDO for Backlight Applications

PRODUCT DATASHEET
AAT2856
ChargePump^TM High Current Charge Pump with Dual LDO for Backlight Applications
Typical Characteristics
BENS, FENS High Threshold Voltage
vs. Input Voltage
1.4
1.3
1.2
-40°C
1.1
1.0
0.9
0.8
0.7
25°C
85°C
0.6
0.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
BENS, FENS Low Threshold Voltage
vs. Input Voltage
1.4
1.3
1.2
-40°C
1.1
1.0
0.9
0.8
0.7
25°C
85°C
0.6
0.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
BENS, FENS Latch Timeout vs. Input Voltage
260
240
220
25°C
200
-40°C
180
160
140
25°C
120
100
80
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
BENS, FENS Off Timeout vs. Input Voltage
300
260
25°C
-40°C
220
85°C
180
140
100
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Input Voltage (V)
LDOs A and B Turn On Characteristic
V_EN
(2V/div) _0V
V_OUT
(500mV/div) 0V
Time (50µs/div)
LDOs A and B Load Regulation
1.0
0.5
OUTA
0.0
OUTB
-0.5
-1.0
0.1
1
10
100
1000
Load Current (mA)
6
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2856.2008.02.1.3