A7142
DC-DC CONVERTER/ BUCK (STEP-DOWN)
AiT Semiconductor Inc.
www.ait-ic.com
SIMPLE SWITCHER POWER CONVERTER 150kHz, 2A PWM
DESCRIPTION
FEATURES
The A7142 series of regulators are monolithic integrated
circuits that provide all the active functions for a
step-down (buck) switching regulator, capable of
driving 2A load with excellent line and load
regulation. These devices are available in fixed
output voltages of 5V and an adjustable output
versions.
5V and adjustable output versions
Adjustable version output voltage range, 1.23V
to 37V ± 3% max over line and load conditions
Guaranteed 2A output current
Wide input voltage range
Requires only 4 external components
150 kHz fixed frequency oscillator
Requiring a minimum number of external components,
these regulators are simple to use and include internal
frequency compensation, and a fixed-frequency
oscillator. The A7142 series operates at a switching
frequency of 150KHz thus allowing smaller sized filter
components than what would be needed with lower
frequency switching regulators.
TTL shutdown capability, low power standby mode
Uses readily available standard inductors
Thermal shutdown and current limit protection
Available in SOP8 and PSOP8 Packages
APPLICATION
Simple high-efficiency step-down (buck) regulator
On-card switching regulators
Some features include a guaranteed ±4% tolerance
on output voltage under specified input voltage and
output load conditions, and ±15% on the oscillator
frequency. External shutdown is included, featuring
typically 50μA standby current. The output switch
includes cycle-by-cycle current limiting, as well as
thermal shutdown for full protection under fault
conditions. The oscillator frequency reduces in the
event of an output short or an overload which causes
the regulated output voltage to drop approximately
40% from the nominal output voltage.
Positive to negative converter
ORDERING INFORMATION
Package Type
Part Number
A7142M8R-XX
A7142M8VR-XX
A7142MP8R-XX
A7142MP8VR-XX
SOP8
M8
PSOP8
Note
MP8
XX: Output Voltage;
50=5.0V; ADJ=Adjustable
V: Halogen free Package
R: Tape & Reel
The A7142 is available in SOP8 and PSOP8
packages.
AiT provides all RoHS products
Suffix “V” means Halogen free Package
TYPICAL APPLICATION
Fixed Output Voltage Versions
REV2.1
- JUN 2011 RELEASED, MAY 2016 UPDATED -
- 1 -
AITSEMI [ AiT Semiconductor ]
