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參數(shù)資料
| 型號(hào)： | AAT1239ITP-1-T1 |
| 廠商： | Advanced Analogic Technologies, Inc. |
| 英文描述： | 40V Step-Up Converter for 4 to 10 White LEDs |
| 中文描述： | 40V的升壓轉(zhuǎn)換器為4至10個(gè)白光LED |
| 文件頁數(shù)： | 4/21頁 |
| 文件大?。?/td> | 915K |
| 代理商： | AAT1239ITP-1-T1 |
AAT1239-1
40V Step-Up Converter for 4 to 10 White LEDs
SwitchReg
TM
PRODUCT DATASHEET
4
1239-1.2007.10.1.0
w w w . a n a l o g i c t e c h . c o m
Electrical Characteristics
1
T
A
= -40°C to +85°C unless otherwise noted. Typical values are at 25°C, V
IN
= 3.6V.
Symbol
Power Supply
PV
IN
, V
IN
V
OUT(MAX)
I
Q
I
SHDN
Description
Conditions
Min
Typ
Max
Units
Input Voltage Range
Maximum Output Voltage
Operating Current
Shutdown Current
Maximum Continuous Output
Current
2
Line Regulation
Low Side Switch On Resistance
Input Disconnect Switch
On Resistance
2.7
5.5
40
70
1.0
V
V
μ
A
μ
A
SEL = GND, FB = 0.1V
EN/SET = GND
I
OUT
2.7V < V
IN
< 5.5V, V
OUT
= 40V
30
mA
Δ
V
LINEREG(FB)
/
Δ
V
IN
R
DS(ON) L
V
IN
= 2.7V to 5.5V, V
FB
= 0.6V
0.7
135
%
m
Ω
R
DS(ON) IN
180
m
Ω
T
SS
Soft-Start Time
From Enable to Output Regulation;
V
FB
= 300mV
V
OUT
Rising
V
OUT
Falling
400
μ
s
V
OVP
Over-Voltage Protection Threshold
Over-Voltage Hysteresis
N-Channel Current Limit
T
J
Thermal Shutdown Threshold
T
J
Thermal Shutdown Hysteresis
1.1
1.2
100
2.5
140
15
1.3
V
mV
A
°C
°C
I
LIMIT
T
SD
T
HYS
SEL, EN/SET
V
SEL(L)
V
SEL(H)
V
EN/SET(L)
V
EN/SET(H)
T
EN/SET (LO)
T
EN/SET(HI)
T
OFF
T
LAT
I
EN/SET
AAT1239-1
SEL Threshold Low
SEL Threshold High
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
EN/SET High Time
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
0.4
V
V
V
V
μ
s
μ
s
μ
s
μ
s
μ
A
1.4
0.4
1.4
0.3
V
EN/SET
< 0.6V
V
EN/SET
> 1.4V
V
EN/SET
< 0.6V
V
EN/SET
> 1.4V
V
EN/SET
= 5V V
IN
= 5V
75
75
500
500
1
-1
V
FB
FB Pin Regulation
V
= 2.7V to 5.5V, SEL = GND,
EN/SET = DATA16
V
= 2.7V to 5.5V, SEL = HIGH,
EN/SET = HIGH
0.085
0.1
1.115
V
0.54
0.6
0.66
1. Specification over the -40°C to +85°C operating temperature range is assured by design, characterization, and correlation with statistical process controls.
2. Maximum continuous output current increases with reduced output voltage, but may vary depending on operating efficiency and thermal limitations.
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