IR3827 Regulator Datasheet

IR3827 Datasheet PDF, Equivalent


Part Number

IR3827

Description

Synchronous Buck Regulator

Manufacture

International Rectifier

Total Page 30 Pages
PDF Download
Download IR3827 Datasheet PDF


IR3827
6A Highly Integrated SupIRBuckTM Single-
Input Voltage, Synchronous Buck Regulator
IR3827
FEATURES
Single input voltage range from 5V to 21V
Wide input voltage range from 1.0V to 21V with
external VCC bias voltage
Output voltage range from 0.6V to 0.86% PVin
Enhanced line/load regulation with feedforward
Programmable switching frequency up to
1.2MHz
Three user selectable soft-start time
User selectable LDO output voltage
Enable input with voltage monitoring capability
Thermally compensated current limit with robust
hiccup mode over current protection
Synchronization to an external clock
Enhanced Pre-bias start-up
Precise reference voltage (0.6V+/-0.6%)
Open-drain PGood indication
Optional power up sequencing
Integrated MOSFET drivers and bootstrap diode
Thermal Shut Down
Monotonic Start-Up
Operating temp: -40°C < Tj < 125°C
Package size: 4mm x 5mm PQFN
Lead-free, Halogen-free and RoHS6 Compliant
DESCRIPTION
The IR3827 SupIRBuckTM is an easy-to-use, fully
integrated and highly efficient DC/DC regulator.
The onboard PWM controller and MOSFETs make
IR3827 a space-efficient solution, providing accurate
power delivery for low output voltage applications.
IR3827 is a versatile regulator which offers
programmable switching frequency and internally set
current limit while operating in wide range of input and
output voltage conditions.
The switching frequency is programmable from 300kHz
to 1.2MHz for an optimum solution. 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
Computing Applications
Set Top Box Applications
Storage Applications
Data Center Applications
Distributed Point of Load Power Architectures
ORDERING INFORMATION
Base Part Number
IR3827
IR3827
IR3827      
Package Type
PQFN 4 mm x 5 mm
PQFN 4 mm x 5 mm
Standard Pack
Form
Quantity
Tape and Reel
750
Tape and Reel
4000
Orderable Part Number
IR3827MTR1PBF
IR3827MTRPBF
PBF – Lead Free
TR/TR1 – Tape and Reel
M – PQFN Package
1 www.irf.com © 2013 International Rectifier
July 18, 2013

IR3827
BASIC APPLICATION
Vin
PGood
SS_Select Vin PVin
Vcc/ Boot
LDO_out
SW
IR3827
PGood
Seq
Enable
Rt/Sync
Fb
Comp
LDO_Select Gnd PGnd
Vo
Figure 1 IR3827 Basic Application Circuit
PINOUT DIAGRAM
IR3827
PVin 13
SW
12
IR3827
Figure 2 IR3827 Efficiency
11 PGnd
Boot 14
10 Vcc/LDO_Out
Enable 15
GND
17
9 Vin
Seq 16
8 LDO_Select
123 4 56 7
Figure 3 4mm x 5mm PQFN (Top View)
2 www.irf.com © 2013 International Rectifier
July 18, 2013


Features 6A Highly Integrated SupIRBuckTM SingleI nput Voltage, Synchronous Buck Regulato r IR3827 FEATURES • Single input vo ltage range from 5V to 21V • Wide inp ut voltage range from 1.0V to 21V with external VCC bias voltage • Output vo ltage range from 0.6V to 0.86% PVin • Enhanced line/load regulation with fee dforward • Programmable switching fre quency up to 1.2MHz • Three user sele ctable soft-start time • User selecta ble LDO output voltage • Enable input with voltage monitoring capability • Thermally compensated current limit wi th robust hiccup mode over current prot ection • Synchronization to an extern al clock • Enhanced Pre-bias start-up • Precise reference voltage (0.6V+/- 0.6%) • Open-drain PGood indication Optional power up sequencing • Int egrated MOSFET drivers and bootstrap di ode • Thermal Shut Down • Monotonic Start-Up • Operating temp: -40°C < Tj < 125°C • Package size: 4mm x 5mm PQFN • Lead-free, Halogen-free and RoHS6 Compliant DESCRIPTION The IR3827 SupIRBuckTM is an easy-to-u.
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