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CYT3406 Datasheet Preview

CYT3406 Datasheet

Synchronous Buck DC/DC Converter

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CYT3406
Synchronous Buck DC/DC Converter CYT3406
Description
The CYT3406 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 CYT3406 suitable for single Li-lon
battery-powered applications. 100% duty cycle
capability extends battery life in portable devices,
while the quiescent current is 200uA with no load,
and drops to < 1uA 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 CYT3406 converters are available in the
industry standard SOT-23-5 power packages (or
upon request).
Typical Applications
Features
Up to 95% Efficiency
Current mode operation for excellent line
and load transient response
Low quiescent current: 230uA
Low Switch on Resistance RDS(ON),
Internal Switch: 0.35
Output voltage 0.6 V 5.5V
Automatic PWM/PFM mode switching
No Schottky diode required
1.4MHz fixed frequency switching
Short-Circuit protection
Shutdown quiescent current: < 1uA
Low profile SOT-23-5 package (lead-free
Application
Digital cameras and MP3
Palmtop computers / PDAs
Cellular phones
Wireless handsets and
modems
PC cards
Portable media players
DSL
FIXED OUTPUT VOLTAGE
2008-07-09
SHENZHEN CYT OPTO-ELECTRONIC TECHNOLOGY CO.,LTD
1
www.szcyt.com




CYT

CYT3406 Datasheet Preview

CYT3406 Datasheet

Synchronous Buck DC/DC Converter

No Preview Available !

ADJUSTABLE OUTPUT VOLTAGE
CYT3406
Order Information
CYT3406- 1 2
Symbol
Description
Denotes Output voltage:
K:1.2V Output B : 1.5V Output; C : 1.8V Output;
G:3.3V Output A : Adjustable Output
Denotes Package Types: E: SOT-23-5
Pin Assignment
PIN NUMBER
SOT-23- 5
1
2
3
4
5
PIN NAME
EN
GND
SW
Vin
Vfb
FUNCTION
ON/OFF Control
(High Enable)
Ground
Switch Output
Input
Output
2008-07-09
SHENZHEN CYT OPTO-ELECTRONIC TECHNOLOGY CO.,LTD
2
www.szcyt.com


Part Number CYT3406
Description Synchronous Buck DC/DC Converter
Maker CYT
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CYT3406 Datasheet PDF






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