A7406A CONVERTER BUCK Datasheet

A7406A Datasheet, PDF, Equivalent


Part Number

A7406A

Description

DC-DC CONVERTER BUCK

Manufacture

AiT Semiconductor

Total Page 10 Pages
Datasheet
Download A7406A Datasheet


A7406A
AiT Semiconductor Inc.
www.ait-ic.com
A7406A
DC-DC CONVERTER BUCK (STEP-DOWN)
40V, 600mA ASYNCHRONOUS
DESCRIPTION
The A7406A is a high frequency (1.8MHz)
step-down switching regulator with integrated
internal high-side high voltage power MOSFET. It
provides single 0.6A(or less) highly efficient output
with current mode control for fast loop response.
The wide input range(4.2V to 40V) accommodates
a variety of step-down applications. Low shutdown
mode quiescent current allows use in
battery-powered applications.
High efficiency at light load condition is achieved by
scaling down the switching frequency to reduce the
switching and gate driving losses.
The A7406A is available in SOT-26 package.
ORDERING INFORMATION
Package Type
Part Number
SOT-26
A7406AE6R
E6
SPQ: 3,000pcs/Reel
A7406AE6VR
Note
V: Halogen free Package
R: Tape & Reel
AiT provides all RoHS products
FEATURES
4.2 V to 40 V operating input range
230uA operating quiescent current.
Low shutdown supply current
500mΩ internal power MOSFET
1.8 MHz fixed switching frequency
>90% efficiency
Internally compensated
Stable with ceramic output capacitors
Internal soft-start
Thermal shutdown function
Precision current limit without current sensing
resistor
Available in SOT-26 Package
APPLICATION
High voltage power conversion
Industrial power systems
Power meter
Battery powered systems
TYPICAL APPLICATION
REV1.0
- MAR 2018 RELEASED -
-1-

A7406A
AiT Semiconductor Inc.
www.ait-ic.com
PIN DESCRIPTION
A7406A
DC-DC CONVERTER BUCK (STEP-DOWN)
40V, 600mA ASYNCHRONOUS
Pin #
1
2
3
4
5
6
Symbol
BST
GND
FB
EN
VIN
SW
Top View
Function
Bootstrap. This is the positive power supply for the internal floating high side
MOSFET driver. Connect a bypass capacitor between this pin and SW pin.
Ground. It should be connected as close as possible to the output capacitor.
Feedback. This is the input to the error amplifier. An external resistive divider
connected between the output and GND is compared to the internal +0.8V reference
to set the regulation voltage.
Enable input. Pull this pin below the specified threshold to disable. Pull it above the
specified threshold to enable. Float this pin to disable.
Input Supply. A decoupling capacitor to ground is required close to this pin to reduce
switching spikes.
Switch node. This is the output from the high-side switch. A low VF
REV1.0
- MAR 2018 RELEASED -
-2-


Features AiT Semiconductor Inc. www.ait-ic.com A 7406A DC-DC CONVERTER BUCK (STEP-DOWN) 40V, 600mA ASYNCHRONOUS DESCRIPTION Th e A7406A is a high frequency (1.8MHz) s tep-down switching regulator with integ rated internal high-side high voltage p ower MOSFET. It provides single 0.6A(or less) highly efficient output with cur rent mode control for fast loop respons e. The wide input range(4.2V to 40V) ac commodates a variety of step-down appli cations. Low shutdown mode quiescent cu rrent allows use in battery-powered app lications. High efficiency at light loa d condition is achieved by scaling down the switching frequency to reduce the switching and gate driving losses. The A7406A is available in SOT-26 package. ORDERING INFORMATION Package Type P art Number SOT-26 A7406AE6R E6 SPQ: 3,000pcs/Reel A7406AE6VR Note V: Ha logen free Package R: Tape & Reel AiT provides all RoHS products FEATURES 4.2 V to 40 V operating input range 230uA operating quiescent current.  Low shutdown supply current.
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