TS3410 Datasheet, PDF (1/7 Pages) Taiwan Semiconductor Company, Ltd – 1A / 1.5MHz Synchronous Buck Converter

TS3410
1A / 1.5MHz Synchronous Buck Converter
SOT-25
Pin Definition:
1. EN
2. Ground
3. Switching Output
4. Input
5. Feedback
General Description
TS3410 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 350uA and drops to <1uA
in shutdown. The 2.5V to 6.5V input voltage range makes TS3410 ideally suited for single Li-Ion, two to four AA
battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable
systems. PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications.
Switching frequency is internally set at 1.5MHz, 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%
● 2.5V to 6.5V Input Voltage Range
● Short Circuit Protection (SCP)
● 1.5MHz Constant Frequency Operation
● Low Dropout Operation: 100% Duty Cycle
● 0.6V Reference Allows Low Output Voltages
● 1A Output Current at V_IN=3V & V_OUT=1.8V
● Low Quiescent Current: 350uA
● No Schottky Diode Required in Application
● ≤1uA Shutdown Current
● Current Mode Operation for Excellent Line and Load
Transient Response
Ordering Information
Part No.
TS3410CX5 RF
Package
SOT-25
Packing
3Kpcs/ 7” Reel
Application
● Cellular Phones
● Digital Still Cameras
● Portable Electronics
● USB Devices
Pin Description
Name
EN
GND
SW
VCC
FB
Description
Power-off pin
Hjnormal operation
LjStep-down operation stopped
(All circuits deactivated)
Ground pin
Switch output pin. Connect external inductor
here. Minimize trace area at this pin to
reduce EMI.
IC power supply pin
Output Feedback pin
Application Circuit
1/7
Version: A08