IR3856WMPBF 반도체 회로 부품 판매점
SYNCHRONOUS BUCK REGULATOR
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 International Rectifier |
PD-97506
IR3856WMPbF
SupIRBuckTM
HIGHLY EFFICIENT
INTEGRATED 6A, SYNCHRONOUS BUCK REGULATOR
Features
• Greater than 95% Maximum Efficiency
• Wide Input Voltage Range 1.5V to 16V
• Wide Output Voltage Range 0.7V to 0.9*Vin
• Continuous 6A Load Capability
• Integrated Bootstrap-diode
• High Bandwidth E/A for excellent transient
performance
• Programmable Switching Frequency up to 1.5MHz
• Programmable Over Current Protection
• PGood output
• Hiccup Current Limit
• Precision Reference Voltage (0.7V, +/-1%)
• Programmable Soft-Start
• Enable Input with Voltage Monitoring Capability
• Enhanced Pre-Bias Start-up
• Seq input for Tracking applications
• -40oC to 125oC operating junction temperature
• Thermal Protection
• 4mm x 5mm Power QFN Package
• Halogen Free, Lead Free and RoHS compliant
Applications
• Server Applications
• Storage Applications
• Embedded Telecom Systems
• Distributed Point of Load Power Architectures
Description
The IR3856W SupIRBuckTM is an easy-to-use,
fully integrated and highly efficient DC/DC
synchronous Buck regulator. The MOSFETs co-
packaged with the on-chip PWM controller make
IR3856W a space-efficient solution, providing
accurate power delivery for low output voltage
applications.
IR3856W is a versatile regulator which offers
programmability of start up time, switching
frequency and current limit while operating in
wide input and output voltage range.
The switching frequency is programmable from
250kHz to 1.5MHz for an optimum solution.
It also features important protection functions,
such as Pre-Bias startup, hiccup current limit and
thermal shutdown to give required system level
security in the event of fault conditions.
• Netcom Applications
• Computing Peripheral Voltage Regulators
• General DC-DC Converters
Rev 9.0
Fig. 1. Typical application diagram
1
Free Datasheet http://www.Datasheet4U.com
PD-97506
IR3856WMPbF
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND unless otherwise specified)
• Vin ……………………………………….……………. -0.3V to 25V
• PVcc, Vcc ……………….……..….……..……….…… -0.3V to 8V (Note2)
• Boot ……………………………………..……….…. -0.3V to 33V
• SW …………………………………………..……… -0.3V to 25V(DC), -4V to 25V(AC, 100ns)
• Boot to SW ……..…………………………….…..….. -0.3V to Vcc+0.3V (Note1)
• OCSet ………………………………………….……. -0.3V to 30V (Max 30mA)
• Input / output Pins ……………………………….. ... -0.3V to Vcc+0.3V (Note1)
• PGND to GND ……………...………………………….. -0.3V to +0.3V
• Storage Temperature Range ................................... -55°C To 150°C
• Junction Temperature Range ................................... -40°C To 150°C (Note2)
• ESD Classification …………………………… ……… JEDEC Class 1C
• Moisture sensitivity level………………...………………JEDEC Level 3@260 °C (Note5)
Note1: Must not exceed 8V
Note2: Vcc must not exceed 7.5V for Junction Temperature between -10oC and -40oC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only and functional operation of the device at these or any other
conditions beyond those indicated in the operational sections of the specifications are not implied.
PACKAGE INFORMATION
4mm x 5mm POWER QFN
13
VIN
Boot
Enable
Seq
14
15
16
12
SW
17
Gnd
11
PGnd
θ JA( Sync _ FET ) = 45 o C / W *
θ JA( Ctrl _ FET ) = 45 o C / W *
θ J -PCB = 2o C / W
* Exposed pads on underside
are connected to copper
10
PVcc
pads of 4-layer (2 oz.) PCB
board design
9 VCC
8 PGood
ORDERING INFORMATION
12 34567
Fb NC COMP Gnd Rt SS/SD OCSet
PACKAGE
DESIGNATOR
M
M
PACKAGE
DESCRIPTION
IR3856WMTRPbF
IR3856WMTR1PbF
PIN COUNT
17
17
PARTS PER
REEL
4000
750
Rev 9.0
2
Free Datasheet http://www.Datasheet4U.com
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제조업체: International Rectifier
( ir )
IR3856WMPBF regulator
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상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
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( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
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