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AIC1594B-25CM

Description
1A step-down pwm regulator
File Size72KB,6 Pages
ManufacturerAIC [Analog Intergrations Corporation]
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AIC1594B-25CM Overview

1A step-down pwm regulator

ADVANCED INFORMATION
AIC1594
1A STEP-DOWN PWM REGULATOR
SPEC NO: DS-1594-P1 03/23/00
!
FEATURES
"
"
"
!
DESCRIPTION
The AIC1594 series are step-down monolithic
PWM regulators delivering 1A at fixed voltages of
2.5V , 3.3V, 5.0V , 12V and using a external di-
vider to adjust output voltage from 1.25V to 30V
with excellent line and load regulation.
Switching frequency up to 150KHz/300KHz are
achievable thus allowing smaller sized filter com-
ponents. Internal current limit and thermal shut-
down circuits provide protection from overloads. It
also provides output overvoltage and short pro-
tection under fault conditions.
The internal precious reference combined with
"
"
"
"
"
"
"
"
Operating Input Voltage From 4.5V to 36V
2.5V, 3.3V, 5V , 12V and Adjustable Output Ver-
sion
Adjustable Version Output Voltage Range , 1.25V
to 30V
±
4% max Over Line and Load Regulation
Available in TO220-5 and TO263-5 Package
Requires Only 4 External Components.
150KHz/300KHz Fixed Constant Frequency
Low Power Standby Mode, I
Q
Typically 80µA
TTL Shutdown Capability.
Output Overvoltage Protection
Current Limit and Thermal Shutdown Protection.
1A Guaranteed Output Current
!
APPLICATIONS
"
"
voltage feedback loop provides optimum output
voltage accuracy and fast load transient response.
Packages available are in
SOP8 for SMD.
standard SOT89-5
Simple High Efficiency Step-down regulator
On-Card Switching regulators
and DIP8 for standard assembly and TO263-5,
!
TYPICAL APPLICATION CIRCUIT
1
V
IN
C1
IN
+
C2

OUT
D1
4
R1
AIC1594
SHDN
FB
2
L1
C3
+
V
OUT
GND
3
R2
R1 short and R2 open for fixed
switching output version
1A Precision PWM DC/DC Regulator
ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
www.analog.com.tw
TEL: (8863)577-2500 FAX:(8863)577-2510
1

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Description 1A step-down pwm regulator 1A step-down pwm regulator 1A step-down pwm regulator 1A step-down pwm regulator 1A step-down pwm regulator 1A step-down pwm regulator 1A step-down pwm regulator 1A step-down pwm regulator 1A step-down pwm regulator
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