SI4724 Datasheet, PDF (1/11 Pages) Vishay Siliconix – N-Channel Synchronous MOSFETs With Break-Before-Make

Si4724
Vishay Siliconix
N-Channel Synchronous MOSFETs With Break-Before-Make
DESCRIPTION
The Si4724CY N-Channel synchronous MOSFET with
break-before-make (BBM) is a high speed driver designed to
operate in high frequency DC/DC switchmode power
supplies. It’s purpose is to simplify the use of N-Channel
MOSFETs in high frequency buck regulators. This device is
designed to be used with any single output PWM IC or ASIC
to produce a highly efficient low cost synchronous rectifier
converter. A synchronous enable pin (disable = low,
enable = high) controls the synchronous function for light
load conditions.
The Si4724CY is packaged in Vishay Siliconix’s high
performance LITTLE FOOT^® SO-16 package.
FEATURES
• 0 V to 30 V operation
• Driver impedance-3
• Undervoltage lockout
• Fast switching times
• 30 V MOSFETs
• High side: 0.0375 at V_DD = 4.5 V
• Low side: 0.029 at V_DD = 4.5 V
• Switching frequency: 250 kHz to 1 MHz
• Integrated schottky
FUNCTIONAL BLOCK DIAGRAM
V_DD
IN
SYNC EN
GND
Level Shift
Undervoltage
Lockout
V_DD
+
-
V_REF
BOOT
D₁
Q₁
S₁
D₂
Q₂
S₂
Document Number: 71863
www.vishay.com
S11-1185-Rev. F, 13-Jun-11
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000