PRODUCT DATASHEET
AAT3151B
ChargePump
TM
High Efficiency 1X/1.5X Charge Pump For White LED Applications
Typical Characteristics
Load Characteristics
(V
IN
= 3.7V; 1.5X Mode; 15mA Load)
Load Characteristics
(V
IN
= 3.9V; 1.5X Mode; 20mA Load)
V
IN
(40mV/div)
CP
(40mV/div)
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
V
SINK
(40mV/div)
Time (500ns/div)
Time (500ns/div)
Load Characteristics
(V
IN
= 4.2V; 1.5X Mode; 30mA Load)
EN/SET Latch Timeout (μs)
μ
350
300
250
200
150
100
50
0
EN/SET Latch Timeout vs. Input Voltage
V
IN
(40mV/div)
CP
(40mV/div)
V
SINK
(40mV/div)
-40°C
25°C
85°C
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
Time (500ns/div)
Input Voltage (V)
EN/SET Off Timeout vs. Input Voltage
20
400
18
Input Ripple vs. Input Voltage
EN/SET Off Timeout (μs)
μ
30mA
20mA
350
Amplitude (mV)
16
14
12
10
8
6
4
2
0
2.50
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
300
250
200
150
100
50
0
-40°C
25°C
85°C
10.2mA
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)
Input Voltage (V)
6
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3151B.2008.02.1.1
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