PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Complete PWM Power Control
3.6-V to 40-V Operation
Internal Undervoltage-Lockout Circuit
Internal Short-Circuit Protection
Oscillator Frequency . . . 20 kHz to 500 kHz
Variable Dead Time Provides Control Over
Total Range
±3% Tolerance on Reference Voltage
(TL5001A)
Available in Q-Temp Automotive
HighRel Automotive Applications
Configuration Control / Print Support
Qualification to Automotive Standards
Description
The TL5001 and TL5001A incorporate on a single
monolithic chip all the functions required for a
pulse-width-modulation (PWM) control circuit.
Designed primarily for power-supply control, the
TL5001/A contains an error amplifier, a regulator,
an oscillator, a PWM comparator with a
dead-time-control input, undervoltage lockout
(UVLO), short-circuit protection (SCP), and an open-collector output transistor. The TL5001A has a typical
reference voltage tolerance of ±3% compared to ±5% for the TL5001.
The error-amplifier common-mode voltage ranges from 0 V to 1.5 V. The noninverting input of the error amplifier
is connected to a 1-V reference. Dead-time control (DTC) can be set to provide 0% to 100% dead time by
connecting an external resistor between DTC and GND. The oscillator frequency is set by terminating RT with
an external resistor to GND. During low VCC conditions, the UVLO circuit turns the output off until VCC recovers
to its normal operating range.
The TL5001C and TL5001AC are characterized for operation from –20°C to 85°C. The TL5001I and TL5001AI
are characterized for operation from –40°C to 85°C. The TL5001Q and TL5001AQ are characterized for
operation from –40°C to 125°C. The TL5001M and TL5001AM are characterized for operation from –55°C to
125°C.
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