AAT1405 Advanced Analogic Technologies, Inc., AAT1405 Datasheet - Page 5

• Manufacturer Part Number: AAT1405
• Description: 4 Channel Led Backlight Driver With Integrated Boost And High Frequency Direct Pwm Dimming
• Manufacturer: Advanced Analogic Technologies, Inc.

Electrical Characteristics
V
otherwise noted. Typical values are at T
1. The AAT1405 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
2. Output voltage must result in a voltage lower than the LX maximum rating under all operating conditions.
1405.2010.06.1.0
SwitchReg
Power Supply, Current Sinks
Logic Level Inputs: EN Pin
Logic Level Inputs: SYNC, PWM, FSET Pins
T
Thermal Protection
IN
Symbol
I
I
F
tion with statistical process controls.
CSx-Matching
R
PWM(ON/OFF)
CSx
PWM(MAX)
T
= 12V; C
DS(ON)LO
V
V
V
T
I
F
F
D
I
V
T
F
V
V
V
V
I
I
V
T
J(HYS)
I
LIMIT
EN(H)
I
LEAK
SYNC
SYNC
EN(L)
J(SD)
UVLO
I
/I
CSx
OSC
LEN
OVP
MAX
MIN
SD
SS
(H)
(H)
LK
IN
CC
CX
Q
RSET
TM
Description
Input Voltage Range
Under-Voltage Threshold
V
Current Sink Voltage
IN Quiescent Current (no switching)
IN Pin Shutdown Current
Current Sink Accuracy
Current Matching Between Any Sink Channel
Over-Voltage Threshold
Over-Voltage Hysteresis
Low Side Switch On Resistance
Maximum Duty Cycle
Minimum On-Time
Current Set Ratio
Low Side Switch Current Limit
LX Pin Leakage
CSx Pin Leakage
Oscillator Frequency
Sync Frequency
Sync Duty Cycle Range
Maximum Direct PWM Frequency
Soft-Start Time
Threshold Low
Threshold High
Input Leakage Enable Pin
Threshold Low
Threshold High
Input Leakage
PWM Turn On/Off Delay
T
T
IN
J
J
CC
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
= 4.7μF, C
4 Channel LED Backlight Driver with Integrated Boost and High Frequency Direct PWM Dimming
Output Voltage
OUT
= 2.2μF; C
VCC
1
A
= 25
= 2.2μF; L
w w w . a n a l o g i c t e c h . c o m
o
C.
1
Conditions
V
V
V
Hysteresis
V
EN = Logic High, I
EN = Logic High, I
(R
I
CS1-CS4 = Open, EN = Logic Low,
does not include LX leakage current
I
I
V
V
V
I
EN = Logic Low; V
EN = Logic Low; CSx = 30V
FSET = Logic Low; V
V
FSET = Logic High; V
V
F
V
V
V
PWM transition to 95%/5% I
CSx
CSx
CSx
CSx
OSC
IN
CC
IN
IN
OUT
OUT
CC
IN
IN
OUT
EN
SYNC
= 10μH; R
SET
/I
= V
Rising
Falling
= V
= V
= Open
= 4.5V
= 5V, V
= 0%, V
= 21mA
= 21mA
± 20%
Rising
Falling
= 35V, C
RSET
= 7.5kΩ)
= V
CC
CC
CC
, V
PWM
= 4.5 to 5.5V
= 4.5 to 5.5V
RSET
IN
CSx
= V
COMP
= 5V
SET
= 0.6V
= 0.5V, EN = Logic High
FSET
=7.5kΩ (I
= 18nF, R
CC(OUT)
CSx
LX
= 5V
= 40V
IN
IN
= 21mA
= 5.0 to 26.0V;
= 5.0 to 26.0V;
= 0mA
COMP
CSx
RSET
= 10kΩ
= 21mA); T
PRODUCT DATASHEET
1100
Min
550
4.5
5.0
3.2
4.0
1.1
3.0
2.5
1.4
90
10
-5
-3
-1
AAT1405
A
= -40
±20%
1300
Typ
500
100
200
100
262
675
140
F
4.5
0.5
1.5
1.2
±2
±2
50
15
OSC
1
1
o
C to 85
Max
1500
26.0
40.0
800
100
5.5
4.3
1.3
6.5
0.4
0.4
+5
+3
90
10
6
1
3
1
o
C unless
Units
mΩ
A/A
kHz
kHz
kHz
kHz
mV
mA
mV
ms
μA
μA
μA
μA
μA
ns
μs
°C
°C
%
%
%
%
V
V
V
V
V
V
A
V
V
V
V
5