파트넘버.co.kr LD1085 데이터시트 PDF


LD1085 반도체 회로 부품 판매점

3A Low Dropout Positive Regulator



HOTCHIP 로고
HOTCHIP
LD1085 데이터시트, 핀배열, 회로
LD1085
3A Low Dropout Positive Regulator
GENERAL DESCRIPTION
The LD1085 is a low dropout three terminal
regulator with 3A output current capability. The
output voltage is adjustable with the use of a
resistor divider or fixed 1.5V/1.8V/2.5V/3.3V/5V.
Dropout voltage is guaranteed to be at maximum
of 1.5V with the maximum output current. Its low
dropout voltage and fast transient response make
it ideal for low voltage microprocessor
applications. Current limit and thermal
protection provide protection against any
overload condition that would create excessive
junction temperatures.
FEATURES
‹ 1.5V Max. Dropout Voltage at 3A Output
Current.
‹ Fast Transient Response.
‹ Extremely Tight Line and Load Regulation.
‹ Current Limiting and Thermal Protection.
‹ Adjustable Output Voltage or Fixed 1.5V,
1.8V,2.5V,3.3V,5.0V.
APPLICATIONS
„ Mother Board I/O Power Supplies
„ Microprocessor Power Supplies.
„ High Current Regulator
„ Post Regulator for Switching Supply.
„ Notebook Computers
BLOCK DIAGRAM
Ver1.0
1


LD1085 데이터시트, 핀배열, 회로
OB2269
LD1085
PIN DESCRIPTIONS
ADJ PIN - Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-VADJ and IADJ=60u A (typ.)
/GND PIN- Power ground.
VOUT PIN - Adjustable output voltage.
VIN PIN - Power Input.
TYPICAL APPLICATION CIRCUIT
VREF=VOUT - VADJ=1.25V (typ.)
VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2
IADJ=60uA ( typ.)
(1) C1 needed if device is far away from filter
capacitors.
(2) C2 required for stability.
ORDERING INFORMATION
LD1085
Ver1.0
C
Package Type
E:TO-252
M:TO-263-2
T:TO-220
MA:TO-263-3
Output Voltage
ADJ:adj
15:1.5V
18:1.8V
25:2.5V
33:3.3V
50:5.0V
2




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LD1085 regulator

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