PRODUCT DATASHEET
AAT2860
TM
ChargePump
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
Typical Characteristics
Flash Mode Turn-On Characteristic
Backlight Mode Turn-On Characteristic
(VIN = 2.8V; 300mA/Channel; 2x Mode)
(VIN = 4.6V; 30mA/Channel; 1x Mode)
4
4
2
VFL_LVL
(2V/div)
VSDA
2
0
(2V/div)
0
VOUT
(2V/div)
VBLX
(2V/div)
VOUT
4
2
0
4
2
0
(2V/div)
VFLX
(2V/div)
600
400
200
0
200
100
0
IIN
IIN
(200mA/div)
(100mA/div)
Time (50µs/div)
Time (100µs/div)
Backlight Mode Turn-On Characteristic
Backlight Mode Turn-On Characteristic
(VIN = 3.6V; 30mA/Channel; 1.5x Mode)
(VIN = 3.2V; 30mA/Channel; 2x Mode)
4
4
VSDA
VSDA
2
0
2
0
(2V/div)
(2V/div)
VOUT
(2V/div)
VBLX
(2V/div)
VOUT
(2V/div)
VBLX
(2V/div)
4
2
0
4
2
0
400
200
0
400
200
0
IIN
IIN
(200mA/div)
(200mA/div)
Time (100µs/div)
Time (100µs/div)
Backlight Mode Turn-Off Characteristic
Operating Characteristic
(VIN = 3.6V; 30mA/Channel; 1.5x Mode)
(30mA/Channel Backlight; 1.5x Mode; VIN = 3.6V; COUT = 2.2µF)
4
VSDA
20
10
0
2
0
(2V/div)
VDIODE
(2V/div)
4
2
0
100
50
0
2
0
-50
IIN
(2mA/div)
Time (500ns/div)
Time (200µs/div)
w w w . a n a l o g i c t e c h . c o m
8
2860.2008.05.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
