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TS3420CX6-RFG Datenblatt(PDF) 1 Page - Taiwan Semiconductor Company, Ltd

Teilenummer TS3420CX6-RFG
Bauteilbeschribung  2A, 1.25MHz Synchronous Buck Converter
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Hersteller  TSC [Taiwan Semiconductor Company, Ltd]
Direct Link  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

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TS3420
2A, 1.25MHz Synchronous Buck Converter
1/9
Version: A12
SOT-26
General Description
TS3420 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode
architecture. The device is available in an adjustable version. Supply current with no load is 200uA and drops to
<1uA in shutdown. The 2.8V to 5.5V input voltage range makes TS3420 ideally suited for single Li-Ion, two to
three AA battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in
portable systems. Switching frequency is internally set at 1.25MHz, allowing the use of small surface mount
inductors and capacitors. The internal synchronous switch increases efficiency and decreases need of an external
schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage.
Features
High Efficiency: Up to 96%
2.8V to 5.5V Input Voltage Range
Output Voltage from 0.6V to VIN
Short Circuit Protection (SCP)
Build in Soft-Start Function
1.25MHz Constant Frequency Operation
Up to 2A Output Current
No Schottky Diode Required in Application
≤1uA Shutdown Current
Current Mode Operation for Excellent Line and
Load Transient Response
Application
Cellular Phones
Digital Still Cameras
Portable Electronics
USB Devices
Pin Description
Name
Description
EN
Power-off pin
H:normal operation
L:Step-down operation stopped
GND
Ground pin
SW
Switch output pin. Connect external inductor
here. Minimize trace area at this pin to
reduce EMI.
VCC
IC power supply pin
FB
Output Feedback pin
Ordering Information
Part No.
Package
Packing
TS3420CX6 RFG
SOT-26
3Kpcs/ 7” Reel
Note: “G” denote for Halogen Free Product
Application Circuit
Pin Definition:
1. EN
2. Ground
3. Switching Output
4. Input
5. Ground
6. Feedback


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