SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
D Complete PWM Power-Control Circuitry
D Uncommitted Outputs for 200-mA Sink or
D, N, NS, OR PW PACKAGE
(TOP VIEW)
Source Current
1IN+
1
16
2IN+
1IN−
2
15
2IN−
FEEDBACK
3
14
REF
DTC
4
13
OUTPUT CTRL
CT
5
12
RT
6
11
VCC
C2
GND
7
10
E2
C1
8
9
E1
D Output Control Selects Single-Ended or
D
D
D
D
D
Push-Pull Operation
Internal Circuitry Prohibits Double Pulse at
Either Output
Variable Dead Time Provides Control Over
Total Range
Internal Regulator Provides a Stable 5-V
Reference Supply Trimmed to 1%
Circuit Architecture Allows Easy
Synchronization
Undervoltage Lockout for Low-VCC
Conditions
description/ordering information
The TL594 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control
circuit on a single chip. Designed primarily for power-supply control, this device offers the systems engineer the
flexibility to tailor the power-supply control circuitry to a specific application.
The TL594 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC)
comparator, a pulse-steering control flip-flop, a 5-V regulator with a precision of 1%, an undervoltage lockout
control circuit, and output control circuitry.
The error amplifiers have a common-mode voltage range of −0.3 V to VCC − 2 V. The DTC comparator has a
fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating
RT to the reference output and providing a sawtooth input to CT, or it can be used to drive the common circuitry
in synchronous multiple-rail power supplies.
The uncommitted output transistors provide either common-emitter or emitter-follower output capability. Each
device provides for push-pull or single-ended output operation, with selection by means of the output-control
function. The architecture of these devices prohibits the possibility of either output being pulsed twice during
push-pull operation. The undervoltage lockout control circuit locks the outputs off until the internal circuitry is
operational.
The TL594C is characterized for operation from 0°C to 70°C. The TL594I is characterized for operation from
−40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 2003, Texas Instruments Incorporated
!" #!$% &"'
&! #" #" (" " ") !"
&& *+' &! #", &" ""%+ %!&"
", %% #""'
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1
SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
description/ordering information (continued)
ORDERING INFORMATION
PDIP (N)
SOIC (D)
0°C to 70°C
SOP (NS)
TSSOP (PW)
PDIP (N)
SOIC (D)
−40°C to 85°C
ORDERABLE
PART NUMBER
PACKAGE†
TA
SOP (NS)
TSSOP (PW)
Tube of 25
TL594CN
Tube of 40
TL594CD
Reel of 2500
TL594CDR
Reel of 2000
TL594CNSR
Tube of 90
TL594CPW
Reel of 2000
TL594CPWR
Tube of 25
TL594IN
Tube of 40
TL594ID
Reel of 2500
TL594IDR
Reel of 2000
TL594INSR
Tube of 90
TL594IPW
Reel of 2000
TL594IPWR
TOP-SIDE
MARKING
TL594CN
TL594C
TL594
T594
TL594IN
TL594I
TL594I
Z594
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE
INPUT
2
OUTPUT
CTRL
OUTPUT FUNCTION
VI = 0
VI = Vref
Single-ended or parallel output
Normal push-pull operation
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SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
functional block diagram
OUTPUT CTRL
(see Function Table)
13
6
RT
5
CT
DTC
Oscillator
DTC
Comparator
≈0.1 V
4
9
PWM
Comparator
11
10
+
1
−
IN+
IN−
15
C2
E2
12
+
2
−
Reference
Regulator
VCC
Undervoltage
Lockout
Control
14
FEEDBACK
E1
Pulse-Steering
Flip-Flop
Error Amplifier 2
16
C1
C1
Error Amplifier 1
IN+ 1
2
IN−
8
1D
3
7
REF
GND
0.7 mA
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 V
Amplifier input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC + 0.3 V
Collector output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 V
Collector output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mA
Package thermal impedance, θJA (see Notes 2 and 3): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . 108°C/W
Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, except differential voltages, are with respect to the network ground terminal.
2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) − TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
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3
SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
recommended operating conditions
VCC
VI
Supply voltage
VO
Collector output voltage
Amplifier input voltage
MIN
MAX
7
40
V
−0.3
VCC−2
40
V
Collector output current (each transistor)
Current into feedback terminal
4
CT
Timing capacitor
RT
fosc
Timing resistor
TA
Operating free-air temperature
Oscillator frequency
TL594C
TL594I
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UNIT
V
200
mA
0.3
mA
0.47
10000
nF
1.8
500
kΩ
1
300
kHz
0
70
°C
−40
85
°C
SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
electrical characteristics over recommended operating conditions, VCC = 15 V,
(unless otherwise noted)
reference section
TEST CONDITIONS†
PARAMETER
Output voltage (REF)
Input regulation
IO = 1 mA,
VCC = 7 V to 40 V,
TA = 25°C
TA = 25°C
IO = 1 to 10 mA,
∆TA = MIN to MAX
TA = 25°C
TL594C, TL594I
MIN TYP‡
MAX
4.95
5
5.05
UNIT
V
2
25
14
35
mV
2
10
mV/V
Vref = 0
10
35
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values, except for parameter changes with temperature, are at TA = 25°C.
§ Duration of the short circuit should not exceed one second.
50
mA
Output regulation
Output-voltage change with temperature
Short-circuit output current§
mV
amplifier section (see Figure 1)
PARAMETER
TL594C, TL594I
MIN TYP‡
MAX
TEST CONDITIONS
Input offset voltage, error amplifier
FEEDBACK = 2.5 V
Input offset current
Input bias current
Common-mode input voltage range,
error amplifier
VCC = 7 V to 40 V
Open-loop voltage amplification, error
amplifier
∆VO = 3 V,
RL = 2 kΩ,
Unity-gain bandwidth
VO = 0.5 V to 3.5 V,
RL = 2 kΩ
Common-mode rejection ratio, error
amplifier
VCC = 40 V,
TA = 25°C
VID = −15 mV to −5 V,
VID = 15 mV to 5 V,
UNIT
2
10
FEEDBACK = 2.5 V
25
250
nA
FEEDBACK = 2.5 V
0.2
1
µA
0.3
to
VCC−2
70
V
95
dB
800
kHz
65
80
dB
FEEDBACK = 0.5 V
0.3
0.7
mA
Output source current, FEEDBACK
FEEDBACK = 3.5 V
‡ All typical values, except for parameter changes with temperature, are at TA = 25°C.
−2
Output sink current, FEEDBACK
VO = 0.5 V to 3.5 V
mV
mA
oscillator section, CT = 0.01 µF, RT = 12 kΩ (see Figure 2)
PARAMETER
TEST CONDITIONS†
TL594C, TL594I
TYP‡
MAX
MIN
Frequency
Standard deviation of frequency¶
All values of VCC, CT, RT, and TA constant
Frequency change with voltage
VCC = 7 V to 40 V,
∆TA = MIN to MAX
Frequency change with temperature#
TA = 25°C
UNIT
10
kHz
100
Hz/kHz
1
Hz/kHz
50
Hz/kHz
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values, except for parameter changes with temperature, are at TA = 25°C.
¶ Standard deviation is a measure of the statistical distribution about the mean, as derived from the formula:
Ǹ
N
ȍ (xn * X)2
n+1
N*1
# Temperature coefficient of timing capacitor and timing resistor is not taken into account.
s +
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SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
electrical characteristics over recommended operating free-air temperature range, VCC = 15 V,
(unless otherwise noted) (continued)
dead-time control section (see Figure 2)
PARAMETER
TEST CONDITIONS
Input bias current
VI = 0 to 5.25 V
DTC = 0 V
Maximum duty cycle, each output
TL594C, TL594I
MIN TYP†
MAX
−2
−10
Maximum duty cycle
3
3.3
µA
0.45
Zero duty cycle
Input threshold voltage
UNIT
0
V
† All typical values, except for parameter changes with temperature, are at TA = 25°C.
output section
PARAMETER
TEST CONDITIONS
TL594C, TL594I
TYP†
MAX
MIN
VC = 40 V, VE = 0 V, VCC = 40 V
DTC and OUTPUT CTRL = 0 V,
VC = 15 V,
VE = 0 V,
VCC = 1 to 3 V
Collector off-state current
Emitter off-state current
Common emitter
Collector-emitter saturation voltage
Emitter follower
2
100
4
200
VCC = VC = 40 V,
VE = 0,
VE = 0
IC = 200 mA
1.1
−100
1.3
VC = 15 V,
VI = Vref
IE = −200 mA
1.5
2.5
Output control input current
† All typical values, except for parameter changes with temperature, are at TA = 25°C.
3.5
UNIT
µA
µA
V
mA
pwm comparator section (see Figure 2)
PARAMETER
TEST CONDITIONS
Input threshold voltage, FEEDBACK
Zero duty cycle
Input sink current, FEEDBACK
FEEDBACK = 0.5 V
TL594C, TL594I
TYP†
MAX
MIN
4
0.3
4.5
0.7
UNIT
V
mA
† All typical values, except for parameter changes with temperature, are at TA = 25°C.
undervoltage lockout section (see Figure 2)
TEST CONDITIONS‡
PARAMETER
TL594C, TL594I
MIN
TA = 25°C
∆TA = MIN to MAX
Threshold voltage
MAX
6
3.5
6.9
Hysteresis§
100
‡ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
§ Hysteresis is the difference between the positive-going input threshold voltage and the negative-going input threshold voltage.
PARAMETER
Standby supply current
TEST CONDITIONS
RT at Vref,
All other inputs and outputs open
VCC = 15 V
VCC = 40 V
Average supply current
DTC = 2 V,
See Figure 2
† All typical values, except for parameter changes with temperature, are at TA = 25°C.
6
POST OFFICE BOX 655303
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UNIT
mV
TL594C, TL594I
TYP†
MAX
MIN
9
15
11
18
12.4
V
UNIT
mA
mA
SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
electrical characteristics over recommended operating free-air temperature range, VCC = 15 V,
(unless otherwise noted) (continued)
switching characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
Output-voltage rise time
Common-emitter configuration (see Figure 3)
Output-voltage fall time
Output-voltage rise time
Emitter-follower configuration (see Figure 4)
Output-voltage fall time
TL594C, TL594I
MAX
TYP†
UNIT
100
200
ns
MIN
30
100
ns
200
400
ns
45
100
ns
† All typical values, except for parameter changes with temperature, are at TA = 25°C.
PARAMETER MEASUREMENT INFORMATION
Amplifier Under Test
+
VI
FEEDBACK
−
+
Vref
−
Other Amplifier
Figure 1. Amplifier-Characteristics Test Circuit
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7
SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
PARAMETER MEASUREMENT INFORMATION
VCC = 15 V
150 Ω
2W
12
VCC
4
Test
Inputs
3
12 kΩ
6
5
8
C1
DTC
TL594
11
C2
RT
CT
Output 1
9
E1
FEEDBACK
150 Ω
2W
Output 2
10
E2
0.01 µF
1
IN+
IN−
16 IN+
15 IN−
2
Error
Amplifiers
13 OUTPUT
CTRL
14
REF
GND
7
50 kΩ
TEST CIRCUIT
VCC
Voltage
at C1
0V
VCC
Voltage
at C2
0V
Voltage
at CT
Threshold Voltage
DTC Input
0V
Threshold Voltage
Feedback
Input
0.7 V
Duty Cycle
MAX
0%
VOLTAGE WAVEFORMS
Figure 2. Operational Test Circuit and Waveforms
8
POST OFFICE BOX 655303
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0%
SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
PARAMETER MEASUREMENT INFORMATION
15 V
tf
68 Ω
2W
Each Output
Circuit
Output
tr
90%
90%
CL = 15 pF
(includes probe and
jig capacitance)
10%
10%
TEST CIRCUIT
OUTPUT-VOLTAGE WAVEFORM
Figure 3. Common-Emitter Configuration
15 V
Each Output
Circuit
90%
90%
Output
10%
10%
68 Ω
2W
CL = 15 pF
(includes probe and
jig capacitance)
TEST CIRCUIT
tr
tf
OUTPUT-VOLTAGE WAVEFORM
Figure 4. Emitter-Follower Configuration
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SLVS052F − APRIL 1988 − REVISED NOVEMBER 2003
TYPICAL CHARACTERISTICS
OSCILLATOR FREQUENCY AND
FREQUENCY VARIATION †
vs
TIMING RESISTANCE
100 k
VCC = 15 V
TA = 25°C
40 k
Oscillator Frequency − Hz
−2%
0.001 µF
−1%
10 k
4k
0.01 µF
0%
0.1 µF
1k
400
†
Df = 1%
100
CT = 1 µF
40
10
1k
4k
10 k
40 k 100 k
RT − Timing Resistance − Ω
400 k
1M
† Frequency variation (∆f) is the change in oscillator frequency that occurs over the full temperature range.
Figure 5
AMPLIFIER VOLTAGE AMPLIFICATION
vs
FREQUENCY
100
VCC = 15 V
∆VO = 3 V
TA = 25°C
90
Voltage Amplification − dB
80
70
60
50
40
30
20
10
0
1
10
100
1k
10 k
100 k
f − Frequency − Hz
Figure 6
10
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1M
PACKAGE OPTION ADDENDUM
www.ti.com
4-Mar-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
TL594CD
ACTIVE
SOIC
D
16
40
Pb-Free
(RoHS)
CU NIPDAU
Level-2-250C-1 YEAR
TL594CDR
ACTIVE
SOIC
D
16
2500
Pb-Free
(RoHS)
CU NIPDAU
Level-2-250C-1 YEAR
TL594CN
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
Level-NC-NC-NC
TL594CNSR
ACTIVE
SO
NS
16
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
TL594CPW
ACTIVE
TSSOP
PW
16
90
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
TL594CPWR
ACTIVE
TSSOP
PW
16
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
TL594ID
ACTIVE
SOIC
D
16
40
Pb-Free
(RoHS)
CU NIPDAU
Level-2-250C-1 YEAR
TL594IDR
ACTIVE
SOIC
D
16
2500
Pb-Free
(RoHS)
CU NIPDAU
Level-2-250C-1 YEAR
TL594IN
ACTIVE
PDIP
N
16
25
Pb-Free
(RoHS)
CU NIPDAU
Level-NC-NC-NC
TL594INSR
ACTIVE
SO
NS
16
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-2-260C-1 YEAR/
Level-1-235C-UNLIM
TL594IPW
ACTIVE
TSSOP
PW
16
90
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
TL594IPWR
ACTIVE
TSSOP
PW
16
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
Lead/Ball Finish
MSL Peak Temp (3)
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
0,65
14
0,10 M
8
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
1
7
0°– 8°
A
0,75
0,50
Seating Plane
0,15
0,05
1,20 MAX
PINS **
0,10
8
14
16
20
24
28
A MAX
3,10
5,10
5,10
6,60
7,90
9,80
A MIN
2,90
4,90
4,90
6,40
7,70
9,60
DIM
4040064/F 01/97
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0,15.
Falls within JEDEC MO-153
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