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