MAX8930
WLED Charge Pump, RGB, OLED Boost,
LDOs with ALC and CAI
Typical Operating Characteristics (continued)
(V PV_ = V EN = 3.7V, circuit of Figure 1, T A = +25°C, unless otherwise noted.)
WLED—CHARGE PUMP ACTIVE
MAX8930 toc07
WLED—DIMMING CURRENT TRANSIENT
WITH SLOPE CONTROL
MAX8930 toc08
V C1P
2V/div
20mA
V C1N
0V
0V
2V/div
I LED1
1mA
10mA/div
V C2P
V C2N
V NEG
V PV_ = 3.8V, ILED = 25.6mA
2V/div
0V
0V
2V/div
0V
2V/div
I LED2
1mA
20mA
0.256ms/0.1mA SLOPE
10mA/div
100ns/div
WLED—DIMMING CURRENT TRANSIENT
BY I 2 C
MAX8930 toc09
10ms/div
WLED—DIMMING CURRENT TRANSIENT
BY CAI
MAX8930 toc10
20mA
V CAI
2V/div
0mA
I LED1
I LED2
10mA
10mA
20mA
10mA/div
10mA/div
V SDA
I LED1
I LED2
I 2 C SETTING = 25.6mA TO 20mA
2V/div
0mA
10mA /div
0mA
10mA /div
0mA
1ms/div
WLED—DIMMING CURRENT TRANSIENT
BY CAI AND I 2 C
MAX8930 toc11
2V/div
4ms/div
WLED—DIMMING CURRENT TRANSIENT
BY ALC
MAX8930 toc12
V CAI
I LED1
0mA
10mA/div
0mA
V SENSE
I LED1
I LED2
1V/div
0V
20mA/div
0mA
20mA/div
I LED2
I 2 C SETTING = 20mA
10mA/div
0mA
0mA
10
2ms/div
100ms/div
Maxim Integrated
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