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PDF A7430 Data sheet ( Hoja de datos )
| Número de pieza | A7430 | |
| Descripción | 3A ADJUST FREQUENCY STEP DOWN DC-DC CONVERTER | |
| Fabricantes | AiT Semiconductor | |
| Logotipo |  |
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AiT Semiconductor Inc.
www.ait-ic.com
A7430
DC-DC CONVERTER BUCK
3A ADJUST FREQUENCY STEP DOWN DC-DC CONVERTER
DESCRIPTION
The A7430 consists of step-down switching
FEATURES
Input voltage : 4.2V to 40V
regulator with PWM control. These devises include Output voltage : 0.8V to 38V
a reference voltage source, oscillation circuit, error Duty ratio : 0% to 100% PWM control
amplifier, internal PMOS and etc.
Oscillation frequency range is 50K to 600KHz
A7430 provides low-ripple power, high efficiency and
by outside resistance setting
external transient characteristics. The PWM control Current limit, Short Circuit Protect (SCP) and
circuit is able to the duty ratio linearly from 0 up to
Thermal Shutdown protection
100%.The converter is build out soft start function Built-in internal SW P-channel MOS
that prevents overshoot and inrush current at startup. Available in PSOP8 Package
An over current protect function and short circuit
protect function are built inside, and when OCP or
SCP happens, the operation frequency will be
reduced. The operating frequency is decided by
outside resistance. An external compensation is
easily to system stable.
APPLICATION
Portable DVD Players
Car Application
Telecom/Networking Equipment
Set Top Boxes
With the addition of an internal P-channel Power
MOS, a coil, capacitors, and a diode connected ORDERING INFORMATION
externally, these ICs can function as step-down
switching regulators. They serve as ideal power
supply units for portable devices when coupled with
the PSOP8 with exposed pad package, providing
such outstanding features as low current
consumption. Since this converter can accommodate
an input voltage up to 40V, it is also suitable for the
operation via an AC adapter.
The A7430 is available in PSOP8 package.
Package Type
Part Number
PSOP8
MP8
A7430MP8R
A7430MP8VR
Note
V: Halogen free Package
R: Tape & Reel
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
TYPICAL APPLICATION
REV1.0
- AUG 2012 RELEASED -
-1-
1 page  
AiT Semiconductor Inc.
www.ait-ic.com
A7430
DC-DC CONVERTER BUCK
3A ADJUST FREQUENCY STEP DOWN DC-DC CONVERTER
BLOCK DIAGRAM
REV1.0
- AUG 2012 RELEASED -
-5-
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet A7430.PDF ] | |
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