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