參數(shù)資料
型號(hào): LT1086 Series
廠商: Linear Technology Corporation
英文描述: 1.5A Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 3.6V, 5V, 12V(1.5A,低壓差正輸出固定和可調(diào)穩(wěn)壓器)
中文描述: 1.5A的低壓差穩(wěn)壓器可調(diào)正和固定工作在2.85V,3.3V和3.6V的,5V的,12V的(1.5安培的電流,低壓差正輸出固定和可調(diào)穩(wěn)壓器)
文件頁(yè)數(shù): 1/16頁(yè)
文件大?。?/td> 287K
代理商: LT1086 SERIES
1
LT1086 Series
I
3-Terminal Adjustable or Fixed
2.85V, 3.3V, 3.6V, 5V, 12V
I
Output Current of 1.5A, (0.5A for LT1086H)
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
The LT
1086 is designed to provide 1.5A with higher
efficiency than currently available devices. All internal
circuitry is designed to operate down to 1V input-to-
output differential and the dropout voltage is fully speci-
fied as a function of load current. Dropout is guaranteed at
a maximum of 1.5V at maximum output current, decreas-
ing at lower load currents. On-chip trimming adjusts the
reference/ouput voltage to 1%. Current limit is also
trimmed, minimizing the stress on both the regulator and
power source circuitry under overload conditions.
The LT1086 is pin compatible with older 3-terminal adjust-
able regulators. A 10
μ
F output capacitor is required on
these new devices; however, this is usually included in
most regulator designs.
A 2.85V output version is offered for SCSI-2 active termi-
nation. For surface mount applications see the LT1117-
2.85 data sheet. For high current or lower dropout require-
ments see the LT1123-2.85 data sheet.
Unlike PNP regulators, where up to 10% of the output
current is wasted as quiescent current, the LT1086 quies-
cent current flows into the load, increasing efficiency.
1.5A Low Dropout Positive
Regulators Adjustable and
Fixed 2.85V 3.3V, 3.6V, 5V 12V
FEATURES
DESCRIPTIO
N
U
I
SCSI-2 Active Terminator
I
High Efficiency Linear Regulators
I
Post Regulators for Switching Supplies
I
Constant Current Regulators
I
Battery Chargers
I
Microprocessor Supply
APPLICATIO
S
U
LT1086 Dropout Voltage
OUTPUT CURRENT (A)
0
0
M
1
2
0.5
1
LT1086 TA02
1.5
INDICATES GUARANTEED TEST POINT
–55°C
T
J
150°C
0°C
T
J
125°C
T
J
= –55°C
T
J
= 25°C
T
J
= 150°C
TYPICAL APPLICATIO
N
U
V
IN
4.75V
3.3V AT 1.5A
*MAY BE OMITTED IF INPUT SUPPLY IS WELL
BYPASSED WITHIN 2" OF THE LT1086
LT1086-3.3
LT1086 TA01
10
μ
F*
TANTALUM
10
μ
F
TANTALUM
IN
OUT
GND
5V to 3.3V Regulator
, LTC and LT are registered trademarks of Linear Technology Corporation.
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