PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS052G – APRIL 1988 – REVISED JANUARY 2007
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ORDERING INFORMATION
(1)
T
A
PDIP – N
SOIC – D
0°C to 70°C
SOP – NS
TSSOP – PW
PDIP – N
SOIC – D
–40°C to 85°C
SOP – NS
TSSOP – PW
(1)
(2)
PACKAGE
(2)
Tube of 25
Tube of 40
Reel of 2500
Reel of 2000
Tube of 90
Reel of 2000
Tube of 25
Tube of 40
Reel of 2500
Reel of 2000
Tube of 90
Reel of 2000
ORDERABLE PART NUMBER
TL594CN
TL594CD
TL594CDR
TL594CNSR
TL594CPW
TL594CPWR
TL594IN
TL594ID
TL594IDR
TL594INSR
TL594IPW
TL594IPWR
TOP-SIDE MARKING
TL594CN
TL594C
TL594
T594
TL594IN
TL594I
TL594I
Z594
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
FUNCTION TABLE
INPUT
OUTPUT CTRL
V
I
= 0
V
I
= V
ref
OUTPUT FUNCTION
Single-ended or parallel output
Normal push-pull operation
FUNCTIONAL BLOCK DIAGRAM
OUTPUT CTRL
(see Function Table)
13
6
RT
5
CT
≈0.1
V
4
Oscillator
1D
DTC
Comparator
C1
8
9
C1
E1
DTC
Error Amplifier 1
IN+ 1
2
IN-
+
1
-
PWM
Comparator
Pulse-Steering
Flip-Flop
11
10
C2
E2
Error Amplifier 2
IN+
IN-
16
15
+
2
-
Undervoltage
Lockout
Control
12
V
CC
Reference
Regulator
14
FEEDBACK
3
0.7 mA
7
REF
GND
2
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