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UP6109 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 UP6109
部品説明 5V/12V Synchronous-Rectified Buck Controller
メーカ uPI Semiconductor
ロゴ uPI Semiconductor ロゴ 



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UP6109 Datasheet, UP6109 PDF,ピン配置, 機能
uP6109
5V/12V Synchronous-Rectified
Buck Controller with Enable Input
General Description
Features
The uP6109 is a compact synchronous-rectified buck
controller specifically designed to operate from 5V or 12
supply voltage and to deliver high quality output voltage as
low as 0.8V. This (P)SOP-8 device operates at fixed 300
kHz frequency and provides an optimal level of integration
to reduce size and cost of the power supply.
This controller integrates internal MOSFET drivers that
support 12V+12V bootstrapped voltage for high efficiency
power conversion. The bootstrap diode is built-in to simplify
the circuit design and minimize external part count.
Other features include internal softstart, undervoltage
protection, overcurrent protection and shutdown function.
With aforementioned functions, this part provides
customers a compact, high efficiency, well-protected and
cost-effective solutions. This part is available in (P)SOP-8
packages.
Ordering Information
Order Number Package Type
Remark
uP6109ASA8
SOP-8
uP6109ASU8 PSOP-8
Note: uPI products are compatible with the current IPC/
JEDEC J-STD-020 and RoHS requirements. They are 100%
matte tin (Sn) plating and suitable for use in SnPb or Pb-
free soldering processes.
† Operate from 5V or 12V Supply Voltage
† 3.3V to 12V V Input Range
IN
† 0.8 VREF with 1.5% Accuracy
† Output Range from VREF to 80% of VIN
† Simple Single-Loop Control Design
† Voltage-Mode PWM Control
† Fast Transient Response
† High-Bandwidth Error Amplifier
† 0% to 80% Duty Cycle
† Lossless, Programmable Overcurrent Protection
† Uses Lower MOSFET RDS(ON)
† 300 kHz Fixed Frequency Oscillator
† Internal Soft Start
† Integrated Bootstrap Diode
Applications
† Power Supplies for Microprocessors or
Subsystem Power Supplies
† Cable Modems, Set Top Boxes, and xDSL
Modems
† Industrial Power Supplies; General Purpose
Supplies
† 5V or 12V Input DC-DC Regulators
† Low Voltage Distributed Power Supplies
Pin Configuration & Typical Application Circuit
VIN
BOOT
UGATE
GND
LGATE
BOOT
UGATE
GND
LGATE
18
27
36
45
SOP-8
18
27
GND
36
45
PSOP-8
PHASE
EN
FB
VCC
Disable
Enable
EN
7
PHASE
EN
FB
VCC
FB
6
Option
VCC
5
BOOT
1
UGATE
2
PHASE
8
LGATE
4
3
GND
VOUT
uPI Semiconductor Corp., http://www.upi-semi.com
Rev. F00, File Name: uP6109-DS-F0000
1
Free Datasheet http://www.Datasheet4U.com

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