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參數資料
| 型號： | 505892X |
| 英文描述： | Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits |
| 中文描述： | 集成電路 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 278K |
| 代理商： | 505892X |
1
LT1083/LT1084/LT1085
7.5A, 5A, 3A Low Dropout
Positive Adjustable Regulators
I
Three-Terminal Adjustable
I
Output Current of 3A, 5A or 7.5A
I
Operates Down to 1V Dropout
I
Guaranteed Dropout Voltage at Multiple Current Levels
I
Line Regulation: 0.015%
I
Load Regulation: 0.1%
I
100% Thermal Limit Functional Test
I
Fixed Versions Available
The LT
1083 series of positive adjustable regulators are
designed to provide 7.5A, 5A and 3A with higher efficiency
than currently available devices. All internal circuitry is
designed to operate down to 1V input-to-output differen-
tial and the dropout voltage is fully specified as a function
of load current. Dropout is guaranteed at a maximum of
1.5V at maximum output current, decreasing at lower load
currents. On-chip trimming adjusts the reference voltage
to 1%. Current limit is also trimmed, minimizing the stress
on both the regulator and power source circuitry under
overload conditions.
The LT1083/LT1084/LT1085 devices are pin compatible
with older three-terminal regulators. A 10
μ
F output ca-
pacitor is required on these new devices. However, this is
included in most regulator designs.
Unlike PNP regulators, where up to 10% of the output
current is wasted as quiescent current, the LT1083 quies-
cent current flows into the load, increasing efficiency.
121
1%
IN
OUT
ADJ
365
1%
10
μ
F
5V AT 7.5A
LT1083
V
IN
≥
6.5V
1083/4/5 ADJ TA01
+
10
μ
F*
TANTALUM
+
*REQUIRED FOR STABILITY
5V, 7.5A Regulator
DEVICE
LT1083
LT1084
LT1085
OUTPUT CURRENT*
7.5A
5.0A
3.0A
*For a 1.5A low dropout regulator see the LT1086 data sheet.
I
High Efficiency Linear Regulators
I
Post Regulators for Switching Supplies
I
Constant Current Regulators
I
Battery Chargers
OUTPUT CURRENT
0
I
2
1
0
1083/4/5 ADJ TA02
I
FULL LOAD
Dropout Voltage vs Output Current
APPLICATIOU
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
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