DC/DC Converter. XA3406-AES Datasheet

XA3406-AES Datasheet PDF, Equivalent


Part Number

XA3406-AES

Description

Synchronous Buck DC/DC Converter

Manufacture

XINNA SEMI

Total Page 12 Pages
PDF Download
Download XA3406-AES Datasheet PDF


XA3406-AES Datasheet
Features
Up to 95% Efficiency
Current Mode Operation for Excellent Line
and Load Transient Response
Low Quiescent Current: 200µA
Up to 700mA Load Current
Soft-start
Low Switch on Resistance RDS(ON), Internal
Switch: 0.35
: ~Output Voltage 5.5V 0.6V
Automatic PWM/PFM Mode Switching
No Schottky Diode Required
1.4MHz Fixed Frequency Switching
Short-Circuit Protection
Shutdown Quiescent Current: < 1µA
Low Profile SOT-23-5 Package (lead-free
packaging is now available)
Application
Digital cameras and MP3
Palmtop computers / PDAs
Cellular phones
Wireless handsets and DSL modems
PC cards
Portable media players
XA3406-AES
Synchronous Buck DC/DC Converter
Description
The XA3406-AES is high efficiency synchronous,
PWM step-down DC/DC converters working
under an input voltage range of 2.5V to 5.5V.
This feature makes the XA3406-AES-AES
suitable for single Li-lon battery-powered
applications. 100% duty cycle capability extends
battery life in portable devices, while the
quiescent current is 200µA with no load, and
drops to < 1µA in shutdown.
The internal synchronous switch is desired to
increase efficiency without an external Schottky
diode. The 1.4 MHz fixed switching frequency
allows the using of tiny, low profile inductors and
ceramic capacitors, which minimized overall
solution footprint.
The XA3406-AES-AES converters are available
in the industry standard SOT-23-5 power
packages (or upon request).
Order Information
①②XA3406-AES
:
Symbol
Description
Denotes Output voltage:
A : Adjustable Output
Denotes Package Types:
E: SOT-23-5
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1

XA3406-AES Datasheet
Typical Applications
Adjustable Output Voltage
DC+
4
VIN
L 4.7uH
3
SW
CIN
4.7/10uF
1
EN
OFF/ON
GND
2
FB 5
C1
22pF R1
R2
COUT
10uF
XA3406-AES
VOUT = 0.6V • [1 + (R1/R2)]
Model
XA3406-AES
VOUT (V)
Adjustable Output Voltage
Mark
A18a/HX-VG
Pin Assignment
(TOP VIEW)
FB VIN
54
1 23
EN GND SW
SOT-23-5
PIN Number
SOT23- 5L
1
2
3
4
5
PIN Name
EN
GND
SW
VIN
FB
Function
ON/OFF Control
(High Enable)
Ground
Switch Output
Power Input
Feedback Pin
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2


Features Datasheet pdf Features Up to 95% Efficiency Current Mo de Operation for Excellent Line and Loa d Transient Response Low Quiescent Curr ent: 200µA Up to 700mA Load Current So ft-start Low Switch on Resistance RDS(O N), Internal Switch: 0.35Ω : ~Out put Voltage 5.5V 0.6V Automatic PWM/PFM Mode Switching No Schottky Diode Requi red 1.4MHz Fixed Frequency Switching Sh ort-Circuit Protection Shutdown Quiesce nt Current: < 1µA Low Profile SOT-23-5 Package (lead-free packaging is now av ailable) Application Digital cameras an d MP3 Palmtop computers / PDAs Cellular phones Wireless handsets and DSL modem s PC cards Portable media players XA34 06-AES Synchronous Buck DC/DC Converter Description The XA3406-AES is high eff iciency synchronous, PWM step-down DC/D C converters working under an input vol tage range of 2.5V to 5.5V. This featur e makes the XA3406-AES-AES suitable for single Li-lon battery-powered applicat ions. 100% duty cycle capability extend s battery life in portable devices, while the quiescent current.
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