SI4724CY Datasheet, PDF (1/8 Pages) Vishay Siliconix – N-Channel Synchronous MOSFETs with Break-Before-Make

Si4724CY
Vishay Siliconix
N-Channel Synchronous MOSFETs with Break-Before-Make
FEATURES
D 0- to 30-V Operation
D Driver Impedance—3 W
D Undervoltage Lockout
D Fast Switching Times
D 30-V MOSFETs
D High Side: 0.0375 W @ V_DD = 4.5 V
D Low Side: 0.029 W @ V_DD = 4.5 V
D Switching Frequency: 250 kHz to 1 MHz
D Integrated Schottky
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 FOOTR SO-16 package.
FUNCTIONAL BLOCK DIAGRAM
V_DD
IN
SYNC EN
GND
Level Shift
Undervoltage
Lockout
V_DD
+
- _VREF
Document Number: 71863
S-03922—Rev. D, 19-May-03
BOOT
D₁
Q₁
S₁
D₂
Q₂
S₂
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