Product Summary

TL594CN is a pulse-width-modulation control circuit which provides the systems engineer with the flexibility to tailor the power-supply control circuits to a specific application. The TL594CN contains two error amplifiers, an internal oscillator (externally adjustable), a dead-time control (DTC) comparator, a pulse-steering flip-flop, a 5-V precision reference,undervoltage lockout control, and output control circuits. Two totem-pole outputs provide exceptional rise- and fall-time performance for power FET control. The outputs share a common source supply and common power ground terminals, which allow system designers to eliminate errors caused by high current-induced voltage drops and common-mode noise.The error amplifier has a common-mode voltage range of 0 V to VCC-2 V. The DTC comparator has a fixed offset that prevents overlap of the outputs during push-pull operation. A synchronous multiple supply operation can be achieved by connecting RT to the reference output and providing a sawtooth input to CT.

Parametrics

TL594CN absolute maximum ratings: (1)Supply voltage, VCC(see Note 1) 41 V; (2)Amplifier input voltage, VI: VCC + 0.3 V; (3)Collector voltage : 41 V; (4)Output current (each output), sink or source, IO: 250 mA; (5)Package thermal impedance, θJA(see Notes 2 and 3): 67°C/W; (6)Operating virtual junction temperature, TJ: 150°C; (7)Storage temperature range, Tstg:-65°C to 150 °C.

Features

TL594CN features: (1)Complete PWM Power-Control Function; (2)Totem-Pole Outputs for 200-mA Sink or Source Current; (3)Output Control Selects Parallel or Push-Pull Operation; (4)Internal Circuitry Prohibits Double Pulse at Either Output; (5)Variable Dead-Time Provides Control Over Total Range; (6)Internal Regulator Provides a Stable 5-V Reference Supply, Trimmed to 1% Tolerance; (7)On-Board Output Current-Limiting Protection; (8)Undervoltage Lockout for Low-VCC Conditions; (9)Separate Power and Signal Grounds.

Diagrams

TL594CN block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TL594CN
TL594CN

Texas Instruments

Voltage Mode PWM Controllers PWM Controller

Data Sheet

0-1: $0.47
1-25: $0.42
25-100: $0.33
100-250: $0.33
TL594CNSR
TL594CNSR

Texas Instruments

Voltage Mode PWM Controllers Control Circuit

Data Sheet

0-1400: $0.22
1400-2000: $0.20
2000-5000: $0.20
5000-10000: $0.19
TL594CNSRE4
TL594CNSRE4

Texas Instruments

Voltage Mode PWM Controllers Control Circuit

Data Sheet

0-1400: $0.22
1400-2000: $0.20
2000-5000: $0.20
5000-10000: $0.19
TL594CNSRG4
TL594CNSRG4

Texas Instruments

Voltage Mode PWM Controllers PWM Control Circuit

Data Sheet

0-1400: $0.22
1400-2000: $0.20
2000-5000: $0.20
5000-10000: $0.19
TL594CNG
TL594CNG

ON Semiconductor

Voltage Mode PWM Controllers 40kHz 200mA PWM w/48% Duty Cycle Max

Data Sheet

0-1: $0.47
1-25: $0.42
25-100: $0.29
100-500: $0.24
TL594CNE4
TL594CNE4

Texas Instruments

Voltage Mode PWM Controllers Control Circuit

Data Sheet

0-1: $0.52
1-25: $0.42
25-100: $0.37
100-250: $0.32