Electronic Component New and Original Integrated Circuit

Prod Model:	TL494CDR

Product Description

We, Zhuhai Yukming Technology Co., Ltd. are a one-stop cupply chain for integrated circuit (IC), capacitor, resistor, diode, LED, relay and connector etc for PCB assembly. We have our own reliable sources after setting up the head office in Shenzhen and developing the branch in Zhuhai, and we can completely guarantee the products of original.

Come to us, and we will try the best to support you by controlling our cost as possible as we can. 
 

Lead time	Stock in Hong Kong, Shenzhen and Zhuhai, timely delivery.
Guarantee	100% original assembled new ; 30 days warranty
Payment	Hang Seng Bank (Hong Kong), Paypal,
Shipment	DHL ,TNT ,FEDEX, UPS or any other express as you require

PULSE-WIDTH-MODULATION CONTROL CIRCUITS
FEATURES
Complete PWM Power-Control Circuitry
• Uncommitted Outputs for 200-mA Sink or
Source Current
• Output Control Selects Single-Ended or
Push-Pull Operation
• Internal Circuitry Prohibits Double Pulse at
Either Output
• Variable Dead Time Provides Control Over
Total Range
• Internal Regulator Provides a Stable 5-V
Reference Supply With 5% Tolerance
• Circuit Architecture Allows Easy
Synchronization
 
DESCRIPTION
The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control
circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the
power-supply control circuitry to a specific application.
The TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator,
a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.
The error amplifiers exhibit a common-mode voltage range from -0.3 V to VCC - 2 V. The dead-time control
comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed
by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common
circuits in synchronous multiple-rail power supplies.
The uncommitted output transistors provide either common-emitter or emitter-follower output capability. The
TL494 provides for push-pull or single-ended output operation, which can be selected through the output-control
function. The architecture of this device prohibits the possibility of either output being pulsed twice during
push-pull operation.
The TL494C is characterized for operation from 0°C to 70°C. The TL494I is characterized for operation from
-40°C to 85°C.