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.