UNISONIC TECHNOLOGIES CO., LTD

TL5001

LINEAR INTEGRATED CIRCUIT

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Copyright © 2005 Unisonic Technologies Co., Ltd

QW-R103-016,B

PULSE-WIDTH-MODULATION

CONTROL CIRCUITS

DESCRIPTION

The UTC TL5001 incorporates on a single monolithic chip all the

functions required for a pulse width modulation (PWM) control circuit.

Designed primarily for power-supply control, It 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 error-amplifier common-mode voltage ranges from 0V to 1.5V.

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.

FEATURES

*Complete PWM power control

*3.6-V to 40-V operation

*Internal under voltage-lockout circuit

*Internal short-circuit protection

*Oscillator frequency : 20kHz to 500kHz

*Variable dead timer provides control over total range

DIP-8

SOP-8

*Pb-free plating product number: TL5001L

ORDERING INFORMATION

Ordering Number

Normal

Lead Free Plating

Package

Packing

TL5001-D08-T

TL5001L-D08-T

DIP-8

Tube

TL5001-S08-R

TL5001L-S08-R

SOP-8

Tape Reel

TL5001-S08-T

TL5001L-S08-T

SOP-8

Tube

TL5001L-D08-R

(1)Packing Type

(2)Package Type

(3)Lead Plating

(1) R: Tape Reel, T: Tube

(2) D08: DIP-8, S08: SOP-8

(3) L: Lead Free Plating, Blank: Pb/Sn