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參數(shù)資料
| 型號： | AAT1236IRN-T1 |
| 廠商： | Advanced Analog Technology,lnc. |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | High Efficiency White LED Drivers for Backlight and Keypad |
| 中文描述： | 高效率白光LED的背光和鍵盤驅(qū)動程序 |
| 文件頁數(shù)： | 4/24頁 |
| 文件大?。?/td> | 1009K |
| 代理商： | AAT1236IRN-T1 |
AAT1236
High Efficiency White LED Drivers
for Backlight and Keypad
4
1236.2007.02.1.1
Electrical Characteristics
1
V
IN
= 3.6V; C
IN
= 2.2μF;T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= 25°C.
Symbol
Description
Conditions
Min
Typ
Max
Units
Power Supply
V
IN
V
OUT(MAX)
Input Voltage Range
Maximum Output Voltage
2.7
5.5
24
2.7
V
V
V
V
IN
Rising
Hysteresis
V
IN
Falling
B1 = B2 = A1 = A2 = A3 = 1.2V,
2mA Setting, R
SET
= 226k
Ω
EN = GND
V
O
= 24V
R
SET
= 22.6k
Ω
R
SET
= 22.6k
Ω,
A1 = A2 = A3 = B1 = B2 = 0.4V
V
OUT
Rising
V
UVLO
UVLO Threshold
150
mV
V
1.8
I
CC
Operating Current (No Switching)
300
μA
I
SHDN(MAX)
I
OX
I
DX
VIN Pin Shutdown Current
Maximum Continuous Output Current
Current Sink Accuracy
Current Matching Between Any
Sink Channels
OVP Threshold Voltage
OVP Threshold Hysteresis
Low Side Switch On Resistance
Input Disconnect Switch
1.0
μA
mA
mA
100
18
20
22
I
DX-Matching
2
5
%
V
OV
1.1
1.2
100
80
200
1.3
V
mV
m
Ω
m
Ω
R
DS(ON)N
R
DS(ON)IN
I
OUT
= 100mA
I
OUT
= 100mA
From Enable to Output
Regulation; V
FB
= 300mV
I
SINK
/I
RSET
, V
RSET
= 0.6V
T
SS
Soft-Start Time
300
μs
I
SET
I
LIMIT
Current Set Ratio
Input Switch Current Limit
760
A/A
A
1.2
Enable Input – EN
V
EN(L)
V
EN(H)
I
2
C Serial Interface – SCL, SDA
F
SCL
Clock Frequency
T
LOW
Clock Low Period
T
HIGH
Clock High Period
T
HD_STA
Hold Time START Condition
T
SU_STA
Setup Time for Repeat START
T
SU_DAT
Data Setup Time
T
HD_DAT
Data Hold Low
T
SU_STO
Setup Time for STOP Condition
Bus Free Time Between STOP
and START Condition
V
IL
Input Threshold Low
V
IH
Input Threshold High
I
I
Input Current
V
OL
Output Logic Low (SDA)
Enable Threshold Low
Enable Threshold High
0.4
V
V
1.4
400
kHz
μs
μs
μs
μs
ns
μs
μs
1.3
0.6
0.6
0.6
100
0
0.6
0.9
T
BUF
1.3
μs
2.7
≤
V
IN
≤
5.5
2.7
≤
V
IN
≤
5.5
0.4
V
V
μA
V
1.4
-1.0
1.0
0.4
I
PULLUP
= 3mA
1. The AAT1236 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
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