TS2507

0.5A / 330KHz PWM Buck Controller

1/9

Version: A07

SOP-8

General Description

The TS2507 integrates Pulse-Width-Modulation (PWM) control circuit into a single chip. These devise include a

reference voltage source, oscillation circuit, error amplifier and etc. TS2507 provides low-ripple power, high efficiency,

and excellent transient characteristics. The PWM control circuit is able to very the duty ratio linearly form 0 up to

100%. This controller also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at

startup. An enable function, an over current protect function and short circuit protect function are built inside, and

when OCP or SCP happens, the operation frequency will be reduced. Also, an internal compensation block is built in

to minimum external component count. With the addition of an external P-channel Power MOS, a coil, capacitors, and

a diode connected externally, these components can function as step-down switching regulators. They serve as ideal

power supply units for portable devices when coupled with the SOP-8, providing such outstanding features as low

current consumption. Since this converter can accommodate an input

Ordering Information

Part No.

Package

Packing

TS2507CS RL

SOP-8

2.5Kpcs / 13” Reel

Features

●

Input Voltage: 3.6V~24V

●

Output Voltage: 0.8V~Vcc

●

Duty Ratio: 0%~100% PWM Control

●

Oscillation Frequency: 330kHz typ.

●

Soft-Start (SS), Current Limit (CL), Enable Function

●

Thermal Shutdown Function

●

Short Circuit Protect (SCP)

●

External SW P-Channel MOSFET

●

Low ESR Output Capacitor Application

●

SOP-8 Pb-Free Package

Application

●

Simple High-efficiency Step down Regulator

●

On-Card Switching Regulators

Absolute Maximum Rating

Parameter

Symbol

Rating

Unit

VSS - 0.3 to VSS + 26

V

Feedback Pin Voltage

VSS - 0.3 to VCC

V

ON/OFF Pin Voltage

VSS - 0.3 to VCC + 0.3

V

Switch Pin Voltage

VSS - 0.3 to VCC + 0.3

V

Power Dissipation

Internally limited

mW

Storage Temperature Range

-40 to +150

℃

Operating Temperature Range

-20 to +125

℃

Operating Supply Voltage

+3.6 to +24

V

Thermal Resistance from Junction to case

40

℃

/W

Thermal Resistance from Junction to ambient

120

℃

/W

Pin Definition:

1. EN

5. FB

2. Comp

6. Vss

3. Ocset

7. LX

4. Vcc

5. Gate