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RT8032 bảng dữ liệu(PDF) 1 Page - Richtek Technology Corporation

tên linh kiện RT8032
Giải thích chi tiết về linh kiện  1.2MHz/1.2A Buck Converter with Programmable Average Input Current Limit
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nhà sản xuất  RICHTEK [Richtek Technology Corporation]
Trang chủ  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

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RT8032
1
DS8032-02
March 2011
www.richtek.com
Pin Configurations
(TOP VIEW)
WDFN-12L 4x3
Ordering Information
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
1.2MHz/1.2A Buck Converter with Programmable Average
Input Current Limit
Features
Programmable Average Input Current Limit
3V to 5.5V Input Range
1.2A Output Current
Up to 95% Efficiency
1.2MHz Switching Frequency
No Schottky Diode Required
Force Continues Mode Operation
Low RDS(ON) Internal Switches : 230m
Ω
Ω
Ω
Ω
Ω
Small 12-Lead WDFN Package
External Compensation for Optimal Transient
Response
External Soft-Start
Input Over Voltage Protection
RoHS Compliant and Halogen Free
General Description
The RT8032 is a synchronous, step-down DC/DC converter
with input current limit function. The average input current
limit can be programmed by an external resistor. Its input
voltage range is from 3V to 5.5V and provides an adjustable
regulated output voltage from 0.8V to 5V while delivering
up to 1.2A of output current. The internal synchronous
low on-resistance power switches increase efficiency and
eliminate the need for an external Schottky diode. Current
mode operation with external compensation allows the
transient response to be optimized over a wide range of
loads and output capacitors.
The RT8032 is operated in forced continuous PWM Mode
which minimizes ripple voltage and reduces the noise and
RF interference. The 100% duty cycle in Low Dropout
Operation can maximize the battery life.
Applications
Distributed Power Systems
Battery Charger
DSL Modems
Pre-Regulator for Linear Regulators
3G/3.5GData Card
SHDN/SS
NC
PGND
SW
FB
COMP
ISET
VOUT
VIN
GND
VOUT
NC
11
10
9
1
2
3
4
5
12
67
8
13
RT8032
Package Type
QW : WDFN-12L 4x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)


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