A7404
DC-DC CONVERTER/BUCK (STEP-DOWN)
AiT Semiconductor Inc.
www.ait-ic.com
42V INPUT STANDOFF VOLTAGE, 0.4A STEP-DOWN CONVERTER
DESCRIPTION
FEATURES
The A7404 is a wide input range, high-efficiency, and
high frequency DC-to-DC step-down switching
regulator, capable of delivering up to 0.4A of output
current. With a fixed switching frequency of 750kHz,
this current mode PWM controlled converter allows
the use of small external components, such as
ceramic input and output caps, as well as small
inductors. A7404 also employs a proprietary control
scheme that switches the device into a power save
mode during light load, thereby extending the range
of high efficiency operation. An OVP function protects
the IC itself and its downstream system against input
voltage surges. With this OVP function, the IC can
stand off input voltage as high as 42V, making it an
ideal solution for industrial applications such as smart
meters as well as automotive applications.
In automotive systems, power comes from the
battery, with its voltage typically between 9V and 24V.
Including cold crank and double battery jump-starts,
the minimum input voltage may be as low as 4V and
the maximum up to 36V, with even higher transient
voltages. With these high input voltages, linear
regulators cannot be used for high supply currents
without overheating the regulator. Instead, high
efficiency switching regulators such as A7404 must
be used to minimize thermal dissipation.
Wide Input Operating Range from 4V to 38V
Standoff Input Voltage: 42V
High Efficiency at 20V In 12V Out Up to 95%
High Efficiency PFM mode at light load
Capable of Delivering 0.4A of output current.
No External Compensation Needed
Current Mode control
Logic Control Shutdown
Thermal shutdown and UVLO
Available in SOT-26 Package
APPLICATION
Smart Meters
Industrial Applications
Automotive Applications
TYPICAL APPLICATION
The A7404 is available in SOT-26 package.
ORDERING INFORMATION
Package Type
SOT-26
Part Number
A7404E6R
E6
A7404E6VR
V: Halogen free Package
R: Tape & Reel
Note
AiT provides all RoHS products
Suffix ꢀ V ꢀ means Halogen free Package
REV1.0
- DEC 2015 RELEASED -
- 1 -
AITSEMI [ AiT Semiconductor ]
