AAT3151B
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
400
20
18
Input Ripple vs. Input Voltage
EN/SET Off Timeout (μs)
μ
350
30mA
20mA
-40°C
Amplitude (mV)
300
250
200
150
100
50
0
16
14
12
10
8
6
4
2
0
2.50
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
2.75
3.00
3.25
3.50
3.75
4.00
4.25
4.50
4.75
5.00
Input Voltage (V)
Input Voltage (V)
6
3151B.2007.09.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
