ir3820 International Rectifier Corp., ir3820 Datasheet
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ir3820
Manufacturer Part Number
ir3820
Description
Wide-input Voltage, Synchronous Buck Regulator
Manufacturer
International Rectifier Corp.
Datasheet
1.IR3820.pdf
(21 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ir3820AMTR1PBF
Manufacturer:
IR
Quantity:
3 400
Part Number:
ir3820MTRPBF
Manufacturer:
IR
Quantity:
20 000
SupIRBuck
11/04/08
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Applications
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WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR
Wide Input Voltage Range 2.5V to 21V
Wide Output Voltage Range 0.6V to 12V
Continuous 12A Load Capability
600kHz High Frequency Operation
Programmable Over-Current Protection
Programmable PGood Output
Hiccup Current Limit
Precision Reference Voltage (0.6V)
Programmable Soft-Start
Pre-Bias Start-up
Thermal Protection
Thermally Enhanced Package
Small Size 5mmx6mm QFN
Pb-Free (RoHS Compliant)
Distributed Point-of-Loads
Server and Workstations
Embedded Systems
Storage Systems
DDR Applications
Graphics Cards
Game Consoles
Computing Peripheral Voltage Regulators
TM
Fig. 1. Typical application diagram
Description
The IR3820 SupIRBuck
integrated and highly efficient DC/DC regulator.
The onboard switching controller and MOSFETs
make the IR3820 a space-efficient solution,
providing accurate power delivery for low output
voltage applications.
The IR3820 operates from a single 4.5V to 14V
input supply and generates an output voltage
adjustable from 0.6V to 0.75*Vin at loads up to
12A.
A versatile regulator offering programmability of
startup time, power good threshold and current
limit, the IR3820’s fixed 600kHz switching
frequency allows the use of small external
components.
The IR3820 also features important protection
functions, such as Pre-Bias startup, hiccup
current limit and thermal shutdown to provide the
required system level security in the event of fault
conditions.
HIGHLY INTEGRATED 12A
IR3820MPbF
TM
is an easy-to-use, fully
PD-60329
1