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SC1592EVB Datasheet

  • SC1592EVB

  • Low Dropout High Performance Adjustable Positive Voltage Reg...

  • 293.11KB

  • 18頁

  • SEMTECH   SEMTECH

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Low Dropout High Performance
Adjustable Positive Voltage Regulator
POWER MANAGEMENT
Description
The SC1592 is a 3A low dropout high performance
linear voltage regulator, that provides a low voltage, high
current output with a minimum of external components,
utilizing dual supply configuration.
The SC1592 offers a wide input voltage range from 1.25V
to 16V and is ideal for applications that need to convert
down to 0.8V.
Additionally, the SC1592 is fully protected with an exter-
nally programmable current limit, and thermal shutdown.
Also, there is an EN input which enables or shuts down
the device.
The SC1592 voltage regulator is available in 7-lead DDPAK
and SOIC-8L EDP packages.
SC1592
Features
Wide input range, V
IN
= 1.25V to 16V,
V
CNTL
= 3V to 16V
3A Guaranteed Output Current
260mV (typ) @ 3A dropout voltage in dual supply
mode
1% Initial Accuracy
Adjustable output voltage, down to 0.8V
Programmable current limiting and thermal
shutdown
Fast transient response
Excellent line and load regulation
Power SO-8 and 7-lead DDPAK
Applications
Low voltage logic supplies
Microprocessor and chipset supplies
Split plane microprocessor supplies
Advanced graphics cards supplies
Sound cards and auxiliary power supplies
SMPS post regulator
Typical Application Circuit
+3.3V Vcntl
C1
1uF
CNTL
OUT
+1.8V Vout
R2
66.5
C3
47uF(cer)
SC1592
IN
EN
GND
SENSE
ILIM
+2.5V Vin
C2
10uF
R3
53
V
OUT
=
(1
+
V
REF
R2
)
鈥?/div>
V
REF
R3
=
0.8 V typ.
TTL
R1
100
Revision: January 27, 2004
1
www.semtech.com

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