AAT2869 Advanced Analogic Technologies, Inc., AAT2869 Datasheet - Page 9

• Manufacturer Part Number: AAT2869
• Description: Fade-in/fade-out 4 Channel Backlight Driver With Dual Ldos
• Manufacturer: Advanced Analogic Technologies, Inc.

Typical Characteristics
(AC coupled)
(AC coupled)
2869.2010.01.1.0
SystemPower
(200mA/div)
(50mV/div)
(50mV/div)
(20mA/div)
(50mA/div)
(2V/div)
(2V/div)
(2V/div)
(2V/div)
V
V
V
I
V
LDOA
LDOB
OUTB
I
EN
V
OUT
LED
OUT
I
IN
IN
(V
0
1.5x Mode Operating Characteristics
0
0
0
0
0
0
0
0
IN
(V
= 3.6V; C
IN
(V
= 3.6V; V
IN
TM
= 3.2V; C
V
LDOA
LDO Load Transient
IN
LDO Turn Off
= 2.2μF; C
OUTB
= 2.8V; V
10mA to 150mA)
Time (1ms/div)
IN
Time (40μs/div)
Time (1μs/div)
= 1.2V; C
= C
OUT
LDOB
LDOA
= 1μF; 31mA/ch)
Fade-In/Fade-Out 4 Channel Backlight Driver with Dual LDOs
IN
= 1.2V)
= C
= C
LDOB
OUTB
= 2.2μF;
= 2.2μF;
w w w . a n a l o g i c t e c h . c o m
(2V/div)
(2V/div)
(2V/div)
(20mA/div)
(V
IN
V
V
(2V/div)
(2V/div)
100
LDOA
LDOB
= 3.6V, V
80
60
40
20
0
EN
0.1
V
I
(V
V
OUT
LED
0
0
0
IN
IN
0
0
0
= 3.6V; C
(V
RIPPLE
IN
PSRR vs. Frequency
= 3.6V to 4.2V; C
V
= 500mVPP, C
3.6V
LDOA
PRODUCT DATASHEET
IN
LDO Turn Off
= 2.2μF; C
1
CP Mode Transient
= 3.0V; V
Frequency (KHz)
Time (1ms/div)
4.2V
Time (100μs/div)
AAT2869
IN
LDOB
IN
LDOA
= C
= C
= 1.8V)
OUT
= C
OUT
10
= 2.2μF, I
LDOB
= 1μF; 31mA/ch)
= 2.2μF;
L
= 10mA)
100
9