AAT4900 Datasheet, PDF (1/4 Pages) Advanced Analogic Technologies – Buffered Power Half-Bridge

General Description
The AAT4900 FastSwitchä is a member of
AnalogicTech’s Application Specific Power
MOSFETä (ASPMä) product family. It is a
Buffered Power Half-Bridge, consisting of low on-
resistance Power MOSFETs with integrated
control logic. This device operates with inputs
ranging from 2.7V to 5.5V, making it ideal for both
3V and 5V systems. The device is protected from
shoot-through current with its own control
circuitry. The AAT4900 is capable of very fast
switching times and is ideal for use in high
frequency DC to DC Converters. The quiescent
supply current is a low 1mA (max) at 1MHz CLK
frequency. In shutdown mode, the supply current
decreases to 1µA max
The AAT4900 is available in 5 pin SOT-23
specified over -40 to 85°C.
AAT4900
Buffered Power Half-Bridge
Features
FastSwitch^TM
•= 2.7V to 5.5V Input voltage range
•= 120mΩ (typ) Switch R_DS(ON)
•= Low quiescent current
•= 1µA (max) DC
•= 1mA (max) at 1MHz
•= Only 2.5V needed for Control Signal Input
•= Temp range -40 to 85°C
•= 5 pin SOT-23 package
Applications
•= High frequency DC/DC converters
•= Low-side MOSFET gate driver
Typical Applications
DC/DC Converter Output Stage
2.7V to 5.5V Input
Control Circuit
(PWM Output)
4
CLK
ENABLE ³ EN
5
IN
AAT4900
SOT-23
GND
2
OUT ¹
OUTPUT
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
[phone] Fax [phone]
8-1
4900.2000.9.0.71