TL780-12CKTE [TI]
POSITIVE-VOLTAGE REGULATORS; 正电压稳压器
| 型号： | TL780-12CKTE |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | POSITIVE-VOLTAGE REGULATORS |
| 文件： | 总8页 (文件大小：137K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TL780 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS055F – APRIL 1981 – REVISED DECEMBER 1999
±1% Output Tolerance at 25°C
Internal Short-Circuit Current Limiting
Pinout Identical to µA7800 Series
Improved Version of µA7800 Series
±2% Output Tolerance Over Full Operating
Range
Thermal Shutdown
description
Eachfixed-voltage precision regulator in the TL780 series is capable of supplying 1.5 A of load current. A unique
temperature-compensation technique, coupled with an internally trimmed band-gap reference, has resulted in
improved accuracy when compared to other three-terminal regulators. Advanced layout techniques provide
excellent line, load, and thermal regulation. The internal current-limiting and thermal-shutdown features make
the devices essentially immune to overload.
The TL780-xxC series regulators are characterized for operation over the virtual junction temperature range
of 0°C to 125°C.
KC PACKAGE
(TOP VIEW)
KTE PACKAGE
(TOP VIEW)
OUTPUT
COMMON
INPUT
OUTPUT
COMMON
INPUT
The COMMON terminal is in electrical
contact with the mounting base.
The COMMON terminal is in electrical
contact with the mounting base.
TO-220AB
O
C
I
O
C
I
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
FORM
(Y)
V
TYP
(V)
O
PLASTIC
FLANGE MOUNTED
T
J
HEAT-SINK MOUNTED
(KC)
(KTE)
5
TL780-05CKC
TL780-12CKC
TL780-15CKC
TL780-05CKTE
TL780-12CKTE
TL780-15CKTE
TL780-05Y
TL780-12Y
TL780-15Y
0°C to 125°C
12
15
The KTE package is available taped and reeled. Add the suffix R to the device type (e.g.,
TL780-05CKTER). Chip forms are tested at 25°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 1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL780 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS055F – APRIL 1981 – REVISED DECEMBER 1999
schematic
INPUT
OUTPUT
COMMON
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL780 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS055F – APRIL 1981 – REVISED DECEMBER 1999
†
absolute maximum ratings over operating temperature range (unless otherwise noted)
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
I
Package thermal impedance, θ (see Notes 1 and 2): KC package . . . . . . . . . . . . . . . . . . . . . . . . . . . 22°C/W
JA
KTE package . . . . . . . . . . . . . . . . . . . . . . . . . 23°C/W
Operating free-air, T ; case, T ; or virtual junction, T , temperature range . . . . . . . . . . . . . . . . . 0°C to 150°C
A
C
J
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
†
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. Maximum power dissipation is a function of T (max), θ , and T . The maximum allowable power dissipation at any allowable
J
JA
A
ambient temperature is P = (T (max) – T )/θ . Operating at the absolute maximum T of 150°C can impact reliability. Due to
D
J
A
JA
J
variations in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be
activated at power levels slightly above or below the rated dissipation.
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions
MIN
7
MAX
25
UNIT
TL780-05C
TL780-12C
TL780-15C
Input voltage, V
14.5
17.5
30
V
I
30
Output current, I
1.5
125
A
O
Operating virtual junction temperature, T
0
°C
J
electrical characteristics at specified virtual junction temperature, V = 10 V, I = 500 mA (unless
I
O
otherwise noted)
TL780-05C
‡
PARAMETER
TEST CONDITIONS
= 5 mA to 1 A, P ≤ 15 W,
UNIT
T
J
MIN
4.95
4.9
TYP
MAX
5.05
5.1
5
25°C
5
I
O
I
Output voltage
V
V = 7 V to 20 V
0°C to 125°C
V = 7 V to 25 V
0.5
0.5
I
Input voltage regulation
Ripple rejection
25°C
mV
dB
V = 8 V to 12 V
5
I
V = 8 V to 18 V,
f = 120 Hz
0°C to 125°C
25°C
70
85
I
I
= 5 mA to 1.5 A
4
25
15
O
O
Output voltage regulation
mV
I
= 250 mA to 750 mA
1.5
Output resistance
f = 1 kHz
I = 5 mA
O
0°C to 125°C
0°C to 125°C
25°C
0.0035
0.25
75
W
mV/°C
µV
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
f = 10 Hz to 100 kHz
= 1 A
I
O
25°C
2
V
Input bias current
25°C
5
8
1.3
0.5
mA
V = 7 V to 25 V
0.7
I
Input bias-current change
0°C to 125°C
mA
I
O
= 5 mA to 1 A
0.003
750
2.2
Short-circuit output current
Peak output current
25°C
25°C
mA
A
‡
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.22-µF capacitor across the output.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL780 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS055F – APRIL 1981 – REVISED DECEMBER 1999
electrical characteristics at specified virtual junction temperature, V = 19 V, I = 500 mA (unless
I
O
otherwise noted)
TL780-12C
TYP
†
PARAMETER
TEST CONDITIONS
= 5 mA to 1 A, P ≤ 15 W,
UNIT
T
J
MIN
11.88
11.76
MAX
25°C
12 12.12
12.24
I
O
I
Output voltage
V
V = 14.5 V to 27 V
0°C to 125°C
V = 14.5 V to 30 V
1.2
1.2
12
12
I
Input voltage regulation
Ripple rejection
25°C
mV
dB
V = 16 V to 22 V
I
V = 15 V to 25 V,
I
f = 120 Hz
0°C to 125°C
25°C
65
80
I
I
= 5 mA to 1.5 A
6.5
60
36
O
Output voltage regulation
mV
= 250 mA to 750 mA
2.5
O
Output resistance
f = 1 kHz
I = 5 mA
O
0°C to 125°C
0°C to 125°C
25°C
0.0035
0.6
W
mV/°C
µV
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
f = 10 Hz to 100 kHz
= 1 A
180
2
I
O
25°C
V
Input bias current
25°C
5.5
8
1.3
0.5
mA
V = 14.5 V to 30 V
0.4
I
Input bias-current change
0°C to 125°C
mA
I
O
= 5 mA to 1 A
0.03
350
2.2
Short-circuit output current
Peak output current
25°C
25°C
mA
A
†
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.22-µF capacitor across the output.
electrical characteristics at specified virtual junction temperature, V = 23 V, I = 500 mA (unless
I
O
otherwise noted)
TL780-15C
TYP
†
PARAMETER
TEST CONDITIONS
= 5 mA to 1 A,
P ≤ 15 W,
UNIT
T
J
MIN
14.85
14.7
MAX
I
25°C
15 15.15
15.3
O
I
Output voltage
V
V = 17.5 V to 30 V
0°C to 125°C
V = 17.5 V to 30 V
1.5
1.5
15
15
I
Input voltage regulation
Ripple rejection
25°C
mV
dB
V = 20 V to 26 V
I
V = 18.5 V to 28.5 V, f = 120 Hz
I
0°C to 125°C
25°C
60
75
I
I
= 5 mA to 1.5 A
7
75
45
O
Output voltage regulation
mV
= 250 mA to 750 mA
2.5
O
Output resistance
f = 1 kHz
I = 5 mA
O
0°C to 125°C
0°C to 125°C
25°C
0.0035
0.62
225
2
W
mV/°C
µV
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
f = 10 Hz to 100 kHz
= 1 A
I
O
25°C
V
Input bias current
25°C
5.5
8
1.3
0.5
mA
V = 17.5 V to 30 V
0.4
I
Input bias-current change
0°C to 125°C
mA
I
O
= 5 mA to 1 A
0.02
230
2.2
Short-circuit output current
Peak output current
25°C
25°C
mA
A
†
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.22-µF capacitor across the output.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL780 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS055F – APRIL 1981 – REVISED DECEMBER 1999
electrical characteristics, V = 10 V, I = 500 mA, T = 25°C (unless otherwise noted)
I
O
J
TL780-05Y
†
PARAMETER
UNIT
V
TEST CONDITIONS
MIN
TYP
5
MAX
Output voltage
I
O
= 5 mA to 1 A,
P ≤ 15 W
V = 7 V to 25 V
0.5
0.5
4
I
Input voltage regulation
mV
V = 8 V to 12 V
I
I
= 5 mA to 1.5 A
O
O
Output voltage regulation
mV
I
= 250 mA to 750 mA
1.5
75
2
Output noise voltage
Dropout voltage
f = 10 Hz to 100 kHz
= 1 A
µV
V
I
O
Input bias current
5
mA
mA
A
Short-circuit output current
Peak output current
750
2.2
†
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.22-µF capacitor across the output.
electrical characteristics, V = 19 V, I = 500 mA, T = 25°C (unless otherwise noted)
I
O
J
TL780-12Y
TYP MAX
†
PARAMETER
UNIT
V
TEST CONDITIONS
MIN
Output voltage
I
O
= 5 mA to 1 A,
P ≤ 15 W
12
1.2
1.2
6.5
2.5
180
2
V = 14.5 V to 30 V
I
Input voltage regulation
mV
V = 16 V to 22 V
I
I
= 5 mA to 1.5 A
O
O
Output voltage regulation
mV
I
= 250 mA to 750 mA
Output noise voltage
Dropout voltage
f = 10 Hz to 100 kHz
= 1 A
µV
V
I
O
Input bias current
5.5
350
2.2
mA
mA
A
Short-circuit output current
Peak output current
†
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.22-µF capacitor across the output.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL780 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS055F – APRIL 1981 – REVISED DECEMBER 1999
electrical characteristics, V = 23 V, I = 500 mA, T = 25°C (unless otherwise noted)
I
O
J
TL780-15Y
TYP
15
†
PARAMETER
UNIT
V
TEST CONDITIONS
MIN
MAX
Output voltage
I
O
= 5 mA to 1 A,
P ≤ 15 W
V = 17.5 V to 30 V
1.5
I
Input voltage regulation
mV
V = 20 V to 26 V
I
1.5
I
= 5 mA to 1.5 A
7
O
O
Output voltage regulation
mV
I
= 250 mA to 750 mA
2.5
Output resistance
Output noise voltage
Dropout voltage
f = 1 kHz
0.0035
225
2
W
µV
V
f = 10 Hz to 100 kHz
I
O
= 1 A
Input bias current
5.5
mA
mA
A
Short-circuit output current
Peak output current
230
2.2
†
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.22-µF capacitor across the output.
PARAMETER MEASUREMENT INFORMATION
OUTPUT
(see Note C)
INPUT
TL780
C
I
O
C1 = 0.33 µF
C2 = 0.22 µF
(see Note A)
(see Note B)
NOTES: A. C1 is required when the regulator is far from the power-supply filter.
B. C2 is not required for stability; however, transient response is improved.
C. Permanent damage can occur when OUTPUT is pulled below ground.
Figure 1. Test Circuit
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL780 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS055F – APRIL 1981 – REVISED DECEMBER 1999
APPLICATION INFORMATION
INPUT
TL780-xx
R1
V
O
(Reg)
C1
0.33 µF
In
TL780-xx
+
–
GND
OUTPUT
Out
I
L
V
I
I
O
COMMON
–V
O
I
O
= (V /R1) + I Bias Current
O O
Figure 2. Positive Regulator in Negative
Configuration (V Must Float)
Figure 3. Current Regulator
I
operation with a load common to a voltage of opposite polarity
In many cases, a regulator powers a load that is not connected to ground but, instead, is connected to a voltage
source of opposite polarity (e.g., operational amplifiers, level-shifting circuits, etc.). In these cases, a clamp
diode should be connected to the regulator output as shown in Figure 4. This protects the regulator from output
polarity reversals during startup and short-circuit operation.
TL780-xx
V
I
V
O
1N4001
or
Equivalent
–V
O
Figure 4. Output Polarity-Reversal-Protection Circuit
reverse-bias protection
Occasionally, the input voltage to the regulator can collapse faster than the output voltage. This, for example,
could occur when the input supply is crowbarred during an output overvoltage condition. If the output voltage
is greater than approximately 7 V, the emitter-base junction of the series pass element (internal or external)
could break down and be damaged. To prevent this, a diode shunt can be employed, as shown in Figure 5.
TL780-xx
V
I
V
O
Figure 5. Reverse-Bias-Protection Circuit
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
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BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
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intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1999, Texas Instruments Incorporated
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