AAT4900
Buffered Power Half-Bridge
General Description
The AAT4900 FastSwitch盲 is a member of
AnalogicTech鈥檚 Application Specific Power
MOSFET盲 (ASPM盲) 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 1碌A(chǔ) max
The AAT4900 is available in 5 pin SOT-23
specified over -40 to 85擄C.
Features
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鈥?
鈥?
鈥?
鈥?
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FastSwitch
TM
2.7V to 5.5V Input voltage range
120m鈩?(typ) Switch R
DS(ON)
Low quiescent current
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1碌A(chǔ) (max) DC
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1mA (max) at 1MHz
Only 2.5V needed for Control Signal Input
Temp range -40 to 85擄C
5 pin SOT-23 package
Applications
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鈥?
High frequency DC/DC converters
Low-side MOSFET gate driver
Advanced Information
Typical Applications
DC/DC Converter Output Stage
2.7V to 5.5V Input
5
IN
Control Circuit
(PWM Output)
4
CLK
EN
AAT4900
SOT-23
GND
2
OUT
1
OUTPUT
ENABLE
3
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
(408)524-9684 Fax (408)524-9689
8-1
4900.2000.9.0.71
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