Precision Switchmode Pulse Width Modulation Control Circuit
TL594
The TL594 is a fixed frequency, pulse width modulation...
Precision Switchmode Pulse Width Modulation Control Circuit
TL594
The TL594 is a fixed frequency, pulse width modulation control circuit designed primarily for Switchmode power supply control.
Features
Complete Pulse Width Modulation Control Circuitry On−Chip Oscillator with Master or Slave Operation On−Chip Error Amplifiers On−Chip 5.0 V Reference, 1.5% Accuracy Adjustable Deadtime Control Uncommitted Output
Transistors Rated to 500 mA Source or Sink Output Control for Push−Pull or Single−Ended Operation Undervoltage Lockout These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant*
MAXIMUM RATINGS
Rating Power Supply Voltage Collector Output Voltage
Collector Output Current (Each
Transistor) (Note 1)
Symbol VCC
VC1, VC2
IC1, IC2
Value 42 42
500
Unit V V
mA
Amplifier Input Voltage Range
Power Dissipation @ TA ≤ 45°C
Thermal Resistance Junction−to−Ambient (PDIP) Junction−to−Air (TSSOP) Junction−to−Ambient (SOIC)
VIR PD RqJA
−0.3 to +42 1000
80 140 135
V mW °C/W
Operating Junction Temperature
Storage Temperature Range
Operating Ambient Temperature Range TL594CD, CN, CDTB
TJ
125
°C
Tstg −55 to +125 °C
TA
°C
−40 to 85
Derating Ambient Temperature
TA
45
°C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. Maximum thermal limits must be observed.
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