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.
Features
http://onsemi.com
MARKING
DIAGRAMS
PDIP−16
N SUFFIX
CASE 648
1
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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
Pb−Free Packages are Available*
16
TL594CN
AWLYYWWG
1
16
SO−16
D SUFFIX
CASE 751B
1
TL594CDG
AWLYWW
1
16
MAXIMUM RATINGS
Rating
Power Supply Voltage
Collector Output Voltage
Collector Output Current
(Each Transistor) (Note 1)
Amplifier Input Voltage Range
Power Dissipation @ T
A
≤
45°C
Thermal Resistance
Junction−to−Ambient (PDIP)
Junction−to−Air (TSSOP)
Junction−to−Ambient (SOIC)
Operating Junction Temperature
Storage Temperature Range
Operating Ambient Temperature Range
TL594CD, CN, CDTB
Derating Ambient Temperature
Symbol
V
CC
V
C1
,
V
C2
I
C1
, I
C2
V
IR
P
D
R
qJA
80
140
135
T
J
T
stg
T
A
−40 to 85
T
A
45
°C
125
−55 to +125
°C
°C
°C
Value
42
42
500
−0.3 to +42
1000
Unit
V
V
mA
V
mW
°C/W
1
TSSOP−16
DTB SUFFIX
CASE 948F
1
TL59
4DTB
ALYWG
G
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
Noninv
Input 1
Inv
Input 2
Compen/PWN
Comp Input 3
Deadtime
Control 4
C
T
5
Oscillator
+
Error 1
Amp
−
+
2 Error
Amp
−
V
CC
≈
0.1 V
5.0 V
REF
Noninv
16 Input
Inv
15 Input
14 V
ref
Output
13 Control
12 V
CC
11 C2
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
1. Maximum thermal limits must be observed.
R
T
6
Q2
Ground 7
C1 8
Q1
10 E2
9 E1
(Top View)
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
©
Semiconductor Components Industries, LLC, 2005
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
1
November, 2005 − Rev. 5
Publication Order Number:
TL594/D
ONSEMI [ ON SEMICONDUCTOR ]
