IR3897 반도체 회로 부품 판매점
4A HIGHLY INTERGRATED SUPLRBUCK
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 International Rectifier |
4A Highly Integrated SupIRBuckTM
Single‐Input Vo- l1ta-ge, Synchronous Buck Regulator
PD‐97663
IR3897
FEATURES
Single 5V to 21V application
Wide Input Voltage Range from 1.0V to 21V with
external Vcc
Output Voltage Range: 0.5V to 0.86* Vin
DESCRIPTION
The IR3897 SupIRBuckTM is an easy‐to‐use, fully
integrated and highly efficient DC/DC regulator.
The onboard PWM controller and MOSFETs make
IR3897 a space‐efficient solution, providing accurate
power delivery.
Enhanced Line/Load Regulation with Feed‐Forward
Programmable Switching Frequency up to 1.5MHz
Internal Digital Soft‐Start/Soft‐Stop
Enable input with Voltage Monitoring Capability
Thermally Compensated Current Limit with robust
hiccup mode over current protection
IR3897 is a versatile regulator which offers
programmability of switching frequency and internal
current limit while operates in wide input and output
voltage range.
The switching frequency is programmable from 300kHz
to 1.5MHz for an optimum solution.
Smart Internal LDO to improve light load and full load
efficiency
External Synchronization with Smooth Clocking
Enhanced Pre‐Bias Start‐Up
Precision Reference Voltage (0.5V+/‐0.5%) with
margining capability
Vp for Tracking Applications (Source/Sink Capability
+/‐4A)
Integrated MOSFET drivers and Bootstrap Diode
Thermal Shut Down
Programmable Power Good Output with tracking
capability
Monotonic Start‐Up
Operating temp: ‐40oC < Tj < 125oC
It also features important protection functions, such as
Pre‐Bias startup, thermally compensated current limit,
over voltage protection and thermal shutdown to give
required system level security in the event of fault
conditions.
APPLICATIONS
Netcom Applications
www.DataSheet.net/
Embedded Telecom Systems
Server Applications
Storage Applications
Distributed Point of Load Power Architectures
Small Size: 4mm x 5mm PQFN
Lead‐free, Halogen‐free and RoHS Compliant
BASIC APPLICATION
97
95
93
91
89
87
85
83
81
* 79
*
77
75 12Vin,Internal bias,Frequency 600KHz
73
0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4
Load Current (A)
* optional
1.2Vout 3.3Vout
Figure 1: IR3897 Basic Application Circuit F igure 2:IR3897 Efficiency
1 AUGUST 08, 2012 |DATA SHEET | Rev 3.3
Datasheet pdf - http://www.DataSheet4U.co.kr/
4A Highly Integrated SupIRBuckTM
Single‐Input Vo- l2ta-ge, Synchronous Buck Regulator
PD‐97663
IR3897
ORDERING INFORMATION
IR3897 ―
PBF – Lead Free
TR/TR1 – Tape and Reel
M – Package Type
Package
M
M
Tape & Reel Qty
750
4000
Part Number
IR3897MTR1PBF
IR3897MTRPBF
PIN DIAGRAM
4mm x 5mm POWER QFN
TOP VIEW
www.DataSheet.net/
Fb Vref Comp Gnd Rt/Sync S_Ctrl PGood
JA 32o C / W
J -PCB 2o C / W
2 AUGUST 08, 2012 |DATA SHEET | Rev 3.3
Datasheet pdf - http://www.DataSheet4U.co.kr/
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PDF 파일 내의 페이지 : 총 30 페이지
제조업체: International Rectifier
( ir )
IR3897 data
데이터시트 다운로드 :
[ IR3897.PDF ]
[ IR3897 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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