TL594 Datasheet, PDF (1/12 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUIT

Order this document by TL594/D
Precision Switchmode
Pulse Width Modulation
Control Circuit
The TL594 is a fixed frequency, pulse width modulation control circuit
designed primarily for Switchmode power supply control.
• 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
TL594
PRECISION SWITCHMODE
PULSE WIDTH MODULATION
CONTROL CIRCUIT
SEMICONDUCTOR
TECHNICAL DATA
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
N SUFFIX
PLASTIC PACKAGE
CASE 648
PIN CONNECTIONS
MAXIMUM RATINGS (Full operating ambient temperature range applies,
unless otherwise noted.)
Rating
Symbol
Value
Unit
Power Supply Voltage
Collector Output Voltage
Collector Output Current
(each transistor) (Note 1)
VCC
42
V
VC1,
42
V
VC2
IC1, IC2
500
mA
Amplifier Input Voltage Range
Power Dissipation @ TA ≤ 45°C
Thermal Resistance,
Junction–to–Ambient
VIR
PD
R_θJA
–0.3 to +42
1000
80
V
mW
°C/W
Operating Junction Temperature
TJ
Storage Temperature Range
Tstg
Operating Ambient Temperature Range TA
TL594ID, CN
TL594CD, IN
125
°C
–55 to +125
°C
°C
0 to +70
–25 to +85
Derating Ambient Temperature
TA
NOTES: 1. Maximum thermal limits must be observed.
45
°C
Noninv
Input
1
Inv
Input
2
+
Error
–Amp
1
Compen/PWN
Comp Input
3
Deadtime
Control
4
≈ 0.1 V
+
2
Error
Amp–
VCC
5.0 V
REF
16
Noninv
Input
15
Inv
Input
14 Vref
13
Output
Control
CT 5
RT 6
Ground 7
Oscillator
12 VCC
11 C2
Q2
10 E2
C1 8
Q1
9 E1
(Top View)
ORDERING INFORMATION
Device
TL594CD
TL594CN
TL594IN
Operating
Temperature Range
TA = 0° to +70°C
TA = – 25° to +85°C
Package
SO–16
Plastic
Plastic
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 0
1