900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






A1semi

AS5430 Datasheet Preview

AS5430 Datasheet

3A 400KHz Synchronous Rectified Step-Down Converter

No Preview Available !

A1
A1semi
Electronics Ltd
AS54303A 400KHz Synchronous Rectified
Step-Down Converter
„ GENERAL DESCRIPTION
The AS5430 is a monolithic synchronous buck regulator.
The device integrates 100mMOSFETS that
provide 3A continuous load current over a wide
operating input voltage of 4.75V to 23V. Current
mode control provides fast transient response
and cycle-by-cycle current limit.
An adjustable soft-start prevents inrush current at
turn-on. In shutdown mode, the supply current
drops below 1uA. The device provides a very
compact system solution with minimal reliance on
external components.
„ FEATURES
‹ 3A Output Current
‹ Integrated 100mPower MOSFETS
‹ Wide 4.75~23V Input Voltage Range
‹ Programmable Soft-start
‹ Up to 95% Efficiency
‹ Stable with Low ESR Ceramic Output Capacitors
‹ Output Adjustable From 0.925V to 20V
‹ Cycle-by-Cycle Over Current Protection
‹ Input Under Voltage Lockout
‹ Fixed 400KHz Frequency
„ APPLICATION
‹ Distribute Power Supply
‹ Networking Systems
‹ Notebook or Mini-book
‹ LCD TV/LCD Monitor
„ ORDER INFORMATION
Order Number
AS5430D/TR-LF
Package
SOP8(Exposed Pad)
„ BLOCK DIAGRAM
Packing
Tape&Reel, MPQ=2500
Remark
Lead-Free
AS5430Ver1.0
1 http://www.a1semi.com




A1semi

AS5430 Datasheet Preview

AS5430 Datasheet

3A 400KHz Synchronous Rectified Step-Down Converter

No Preview Available !

A1
A1semi
Electronics Ltd
„ PIN CONFIGURATION
3A 400KHz Synchronous Rectified
AS5430Step-Down Converter
„ PIN DESCRIPTION
Pin#
1
2
3
4
5
6
7
8
Name
BS
IN
SW
GND
FB
COMP
EN
SS
Description
High-side Gate Drive Boost Input.BS suppliers the drive for the high-side N-Channel
MOSFET switch. Connect a 0.01uF or greater capacitor from SW to BS to power the high-
side switch
Power Input. Input with a 4.75~23V power source. Bypass IN to GND with a suitably large
capacitor to eliminate noise on the input to the IC.
Power Switching Output. Switching mode that supplies power to the output. Connect the
output LC filter from SW to the output load.
Ground, connect Exposed Pad to Pin4
Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a
resistive voltage divider from the output voltage.
Compensation mode. COMP is used to compensate the regulation control loop. Connect a
series RC network from COMP to GND to compensate the regulation control loop.
Enable Input.EN is digital input that turns the regulator on or off. Drive EN high to turn on the
regulator. Drive it low to turn it off.Pull up with 100Kω resistor for automatic startup.
Soft-start control Input. SS controls the soft-start period.Connect a capacitor from SS to GND
to set the soft-start period. A 0.01uF capacitor sets the soft-start period to 15ms. To disable
the soft-start feature, leave SS unconnected.
AS5430Ver1.0
2 http://www.a1semi.com


Part Number AS5430
Description 3A 400KHz Synchronous Rectified Step-Down Converter
Maker A1semi
PDF Download

AS5430 Datasheet PDF






Similar Datasheet

1 AS5430 3A 400KHz Synchronous Rectified Step-Down Converter
A1semi





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy