1FEATURES

• Controlled Baseline

– One Assembly/Test Site, One Fabrication

Site

• Extended Temperature Performance of –55°C

to 125°C

• Enhanced Diminishing Manufacturing Sources

(DMS) Support

• Enhanced Product-Change Notification

• Qualification Pedigree (1)

• Input Voltage Range 4.5 V to 52 V

• Output Voltage (700 mV to 87% Vin)

• 200-mA Internal P-Channel FET Driver

(1) Component qualification in accordance with JEDEC and

industry standards to ensure reliable operation over an

extended temperature range. This includes, but is not limited

to, Highly Accelerated Stress Test (HAST) or biased 85/85,

temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound

life. Such qualification testing should not be viewed as

justifying use of this component beyond specified

performance and environmental limits.

• Voltage Feed-Forward Compensation

• Undervoltage Lockout

• Programmable Fixed-Frequency (35 kHz to 500

kHz) Operation

• Programmable Short-Circuit Protection

• Hiccup Overcurrent Fault Recovery

• Programmable Closed-Loop Soft Start

• 700-mV 1% Reference Voltage

• External Synchronization

• Small 8-Pin Small-Outline Integrated Circuit

(SOIC) (D) Package

APPLICATIONS

• Industrial Control

• Distributed Power Systems

• DSL/Cable Modems

• Scanners

• Telecom

DESCRIPTION

The TPS40200 is a flexible nonsynchronous controller with a built-in 200-mA driver for P-channel FETs. The

circuit operates with inputs up to 52 V, with a power-saving feature that turns off driver current once the external

FET has been fully turned on. This feature extends the flexibility of the device, allowing it to operate with an input

voltage up to 52 V, without dissipating excessive power. The circuit operates with voltage-mode feedback and

has feed-forward input-voltage compensation that responds instantly to input-voltage change. The integral 700-

mV reference is trimmed to 2%, providing the means to accurately control low voltages. The TPS40200 is

available in an 8-pin SOIC, and supports many of the features of more complex controllers. Clock frequency, soft

start, and overcurrent limit each are easily programmed by a single, external component. The part has

undervoltage lockout, and can be easily synchronized to other controllers or a system clock to satisfy sequencing

and/or noise-reduction requirements.