IR3624MPBF Datasheet, PDF (1/21 Pages) International Rectifier – HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER

Data Sheet No.PD94714 revA
IR3624MPBF
HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER
Features
• Internal 600kHz Oscillator
• Operates with Single 5V or 12V Supply
• Programmable Over Current Protection
• Hiccup Current Limit Using MOSFET R_DS(on)
sensing
• Precision Reference Voltage (0.6V)
• Programmable Soft-Start
• Pre-Bias Start-up
• Thermal Protection
• 10-Lead MLPD Package
Applications
• Embedded Telecom Systems
• Distributed Point of Load Power Architectures
• Computing Peripheral Voltage Regulator
• Graphics Card
• General DC/DC Converters
Description
The IR3624 is a PWM controller designed for
high performance synchronous Buck DC/DC
applications. The IR3624 drives a pair of external
N-MOSFETs using a fixed 600kHz switching
frequency allowing the use of small external
components. The output voltage can be precisely
regulated using the internal 0.6V reference
voltage for low voltage applications. Protection
such as Pre-Bias startup, hiccup current limit and
thermal shutdown are provided to give required
system level security in the event of fault
conditions.
Vin
Vc
Vcc
HDrv
OCSet
Vout
U1
Comp
LDrv
PGnd
SS / SD
Fb
Gnd
Fig. 1: Typical application Circuit
ORDERING INFORMATION
PKG PACKAGE
DESIG DESCRIPTION
M
IR3624MPBF
M
IR3624MTRPBF
PIN
COUNT
10
10
PARTS
PER TUBE
121
--------
PARTS
PER REEL
-------
3000
T&R
ORIANTAION
Figure A