深圳市云迪科技有限公司 （非本站正式会员）

The TPS40200 is a flexible non-synchronous
• Output Voltage (700 mV to 90% V controller with a built in 200-mA driver for P-channel
in)
FETs. The circuit operates with inputs up to 52 volts
• 200 mA Internal P-FET Driver
with a power-saving feature that turns off driver
• Voltage Feed-Forward Compensation
current once the external FET has been fully turned
• Undervoltage Lockout on. This feature extends the flexibility of the device,
allowing it to operate with an input voltage up to 52
• Programmable Fixed Frequency (35–500 kHz)
volts without dissipating excessive power. The circuit
Operation
operates with voltage-mode feedback and has
• Programmable Short Circuit Protection
feed-forward input-voltage compensation that
• Hiccup Overcurrent Fault Recovery responds instantly to input voltage change. The
integral 700-millivolt reference is trimmed to 2%,
• Programmable Closed Loop Soft Start
providing the means to accurately control low
• 700 mV 1% Reference Voltage
voltages. The TPS40200 is available in an 8 pin
• External Synchronization SOIC, and supports many of the features of more
complex controllers. Clock frequency, soft-start, and
• Small 8-Pin SOIC (D) Package
overcurrent limit are each easily programmed by a
single, external component. The part has
undervoltage lockout, and can be easily synchronized
• Industrial Control
to other controllers or a system clock to satisfy
• Distributed Power Systems sequencing and/or noise-reduction requirements.
• DSL/Cable Modems
Major sections in this data sheet include: