TS2509
3A / 500KHz PWM Buck Converter
1/9 Version: B09
General Description
TS2509 is step-down switching regulator with PWM control and with build in internal PMOS. TS2509 provides low-
ripple power, high efficiency, and excellent transient characteristics. The PWM control circuit can be duty ratio linearly
form 0 up to 100%. This converter also contains an error amplifier circuit as well as a soft-start circuit that prevents
overshoot at startup.
An enable, over current protect and short circuit protect functions are built inside. When OCP or SCP activated, the
operation frequency will be reduced. The internal compensation block is built in to minimum external components and
internal PMOS is complete 3A step down switching regulator ideally for portable devices with outstanding features as
low current consumption.
Features
● Input Voltage: 3.6V~23V
● Output Voltage: 0.8V~Vcc
● Duty Ratio: 0%~100% PWM Control
● Oscillation Frequency: 500kHz typ.
● Soft-Start (SS), Current Limit (CL), Enable Function
● Thermal Shutdown Function
● Short Circuit Protect (SCP)
● Internal SW P-Channel MOSFET
● Low ESR output capacitor (MLCC application)
Application
● Simple High-efficiency Step down Regulator
● On-Card Switching Regulators
Absolute Maximum Rating
Storage Temperature Range
Operating Temperature Range
Thermal Resistance from Junction to case
Thermal Resistance from Junction to ambient
