FAN1538PAX 반도체 회로 부품 판매점
Dual Channel 1A Low Dropout Linear Regulator with UVLO and Soft-start
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 Fairchild Semiconductor |
www.fairchildsemi.com
FAN1538
Dual Channel 1A Low Dropout
Linear Regulator with UVLO and Soft-start
Features
• Two independent outputs
• Load regulation: 0.05% typical
• Under-voltage lockout and softstart
• Over Temperature protection
• T0-252 DPAK, 5-lead SPAK packages
• Fixed 3.3V and adjustable or fixed 2.5V output
Applications
• Hard Disk Drives, CD-Roms
• Set-top Boxes
• ADSL line cards
• Motherboards with multiple supplies
General Description
The FAN1538 provides two output voltages: a fixed 3.3V
ouput and either a fixed 2.5V or adjustable output with 1A
output current capability. Refer to Ordering Information for
details.
Current limit protects against short circuit currents and on
chip over temperature circuitry limits the maximum die tem-
perature.
Under voltage lockout and softstart circuitry protects against
unregulated output voltages when the input voltage is below
specification.
Block Diagram
VIN = 5V
22µF
+
FAN1538A
V1
VIN
V2
NC GND
3.3V at 1.0A
+
22µF
2.5V at 1.0A
+
22µF
VIN = 5V
22 µF
FAN1538B
V1
GND
V2
FB
R1
250
R2
1250
22µF
3.3V at 1.0A
1.5V at 1.0A
22µF
V2 = VREF (1 + R1/R2)
REV. 1.0.2 12/17/03
FAN1538
Pin Assignments
FAN1538PA
FRONT VIEW
FAN1538PB
FRONT VIEW
PRODUCT SPECIFICATION
FAN1538DA
FRONT VIEW
FAN1538DB
FRONT VIEW
12 3 45
12 3 45
1 2 3 45
1 2 3 45
5-Lead SPAK
ΘJC=2°C/W
5-Lead SPAK
ΘJC=2°C/W
5-Lead Plastic TO-252 DPAK
ΘJC=3°C/W Tab is GND
Pin Descriptions
Pin Name
VIN
NC/FB
V1
V2
GND
SPAK
DPAK
1
2
4/5
5/4
3
Pin Function
Input supply voltage
For V2 fixed, no connect. For V2 adjustable, feedback voltage.
Output #1
Output #2
Ground
Absolute Maximum Ratings
Parameter
VIN
Storage Temperature Range
Lead Soldering Temperature, 10 seconds
Min.
-65
Max.
10
150
300
Units
V
°C
°C
Recommended Operating Conditions
Parameter
VIN
Ambient Operating Temperature (TA)
Conditions
Vin to GND
Min.
4.75
0
Typ.
5
Max.
5.25
125
Units
V
°C
2 REV. 1.0.2 12/17/03
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제조업체: Fairchild Semiconductor
( fairchild )
FAN1538PAX regulator
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
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FAN1538PAX
Dual Channel 1A Low Dropout Linear Regulator with UVLO and Soft-start - Fairchild Semiconductor
