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VLF10045 Datasheet(PDF) 1 Page - Richtek Technology Corporation

Part # VLF10045
Description  RT7237C
PDF  15 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

VLF10045 Datasheet(HTML) 1 Page - Richtek Technology Corporation

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RT7237C
®
DS7237C-04
November 2012
www.richtek.com
1
©
Copyright
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Applications
Wireless AP/Router
Set-Top-Box
Industrial and Commercial Low Power Systems
LCD Monitors and TVs
Green Electronics/Appliances
Point of Load Regulation of High-Performance DSPs
2A, 18V, 800kHz Synchronous Step-Down Converter
General Description
The RT7237C is a high efficiency, monolithic synchronous
step-down DC/DC converter that can deliver up to 2A
output current from a 4.5V to 18V input supply. The
RT7237C's current mode architecture and external
compensation allow the transient response to be
optimized over a wide input range and loads. Cycle-by-
cycle current limit provides protection against shorted
outputs, and soft-start eliminates input current surge during
start-up. The RT7237C also provides under voltage
protection and thermal shutdown protection. The low
current (<3
μA) shutdown mode provides output
disconnection, enabling easy power management in
battery-powered systems. The RT7237C is available in
an SOP-8 (Exposed Pad) package.
Features
±±±±±1.5% High Accuracy Reference Voltage
4.5V to 18V Input Voltage Range
2A Output Current
Integrated N-MOSFET Switches
Current Mode Control
Fixed Frequency Operation : 800kHz
Output Adjustable from 0.8V to 12V
Stable with Low ESR Ceramic Output Capacitors
Up to 95% Efficiency
Programmable Soft-Start
Cycle-by-Cycle Over Current Limit
Input Under Voltage Lockout
Output Under Voltage Protection
Thermal Shutdown Protection
RoHS Compliant and Halogen Free
Marking Information
Simplified Application Circuit
VIN
EN
GND
BOOT
FB
SW
L
R1
R2
VOUT
VIN
RT7237C
SS
CSS
COMP
CC
RC
CP
CBOOT
CIN
COUT
Chip Enable
RT7237CH
GSPYMDNN
RT7253CHGSP : Product Number
YMDNN : Date Code


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