供应TI 开关电源芯片/TL494IDR 

宽工作温度范围，-40℃-85℃工作范围，工业级

Features 3 Description

The TL494 device incorporates all the functions 1• Complete PWM Power-Control Circuitry

required in the construction of a pulse-width•

Uncommitted Outputs for 200-mA Sink or modulation (PWM) control circuit on a single chip. Source Current Designed primarily for power-supply control, this

• Output Control Selects Single-Ended or device offers the flexibility to tailor the power-supply

Push-Pull Operation control circuitry to a specific application.

• Internal Circuitry Prohibits Double Pulse at The TL494 device contains two error amplifiers, an

Either Output on-chip adjustable oscillator, a dead-time control

• Internal Regulator Provides a Stable 5-V

Reference Supply With 5% Tolerance The error amplifiers exhibit a common-mode voltage

range from –0.3 V to VCC – 2 V. The dead-time • Circuit Architecture Allows Easy Synchronization control comparator has a fixed offset that provides

approximately 5% dead time. The on-chip oscillator 2 Applications can be bypassed by terminating RT to the reference• Power Supplies: AC/DC, Isolated,

With PFC, > 90 W The uncommitted output transistors provide either

common-emitter or emitter-follower output capability.

• Server PSUs The TL494 device provides for push-pull or single•

• Power Supplies: AC/DC, Isolated,

No PFC, < 90 W The TL494C device is characterized for operation

from 0°C to 70°C. The TL494I device is characterized

• Power: Telecom/Server AC/DC Supplies: for operation from –40°C to 85°C. Dual Controller: Analog

• Smoke Detectors Device Information(1)

• Solar Power Inverters PART NUMBER PACKAGE (PIN) BODY SIZE

SOIC (16) 9.90 mm × 3.91 mm

PDIP (16) 19.30 mm × 6.35 mm

TL494

SOP (16) 10.30 mm × 5.30 mm

TSSOP (16) 5.00 mm × 4.40 mm