TL317Y [TI]
3-TERMINAL ADJUSTABLE REGULATORS; 三端可调稳压器
| 型号： | TL317Y |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 3-TERMINAL ADJUSTABLE REGULATORS |
| 文件： | 总7页 (文件大小：122K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TL317
3-TERMINAL ADJUSTABLE REGULATORS
SLVS004C – APRIL 1979 – REVISED JULY 1999
D PACKAGE
(TOP VIEW)
Output Voltage Range Adjustable From
1.2 V to 32 V When Used With an External
Resistor Divider
INPUT
OUTPUT
OUTPUT
NC
1
2
3
4
8
7
6
5
Output Current Capability of 100 mA
OUTPUT
OUTPUT
NC
Input Regulation Typically 0.01% Per
Input-Voltage Change
ADJUSTMENT
Output Regulation Typically 0.5%
Ripple Rejection Typically 80 dB
NC – No internal connection
OUTPUT terminals are all internally connected.
description
LP PACKAGE
(TOP VIEW)
The TL317 is an adjustable three-terminal
positive-voltage regulator capable of supplying
100 mA over an output-voltage range of 1.2 V to
32 V. It is exceptionally easy to use and requires
only two external resistors to set the output
voltage.
INPUT
OUTPUT
ADJUSTMENT
In addition to higher performance than fixed
regulators, this regulator offers full overload
protection available only in integrated circuits. Included on the chip are current-limiting and thermal-overload
protection. All overload-protection circuitry remains fully functional, even when ADJUSTMENT is disconnected.
Normally, no capacitors are needed unless the device is situated far from the input filter capacitors, in which
case an input bypass is needed. An optional output capacitor can be added to improve transient response.
ADJUSTMENT can be bypassed to achieve very high ripple rejection, which is difficult to achieve with standard
three-terminal regulators.
In addition to replacing fixed regulators, the TL317 regulator is useful in a wide variety of other applications.
Since the regulator is floating and sees only the input-to-output differential voltage, supplies of several hundred
volts can be regulated as long as the maximum input-to-output differential is not exceeded. Its primary
application is that of a programmable output regulator, but by connecting a fixed resistor between
ADJUSTMENT and OUTPUT, this device can be used as a precision current regulator. Supplies with electronic
shutdowncan be achieved by clamping ADJUSTMENT to ground, programming the output to 1.2 V, where most
loads draw little current.
The TL317C is characterized for operation over the virtual junction temperature range of 0°C to 125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
FORM
(Y)
SMALL
T
J
PLASTIC
(LP)
OUTLINE
(D)
0°C to 125°C
TL317CD
TL317CLP
TL317Y
The D and LP packages are available taped and reeled. Add
the suffix R to device type (e.g., TL317CDR). 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
TL317
3-TERMINAL ADJUSTABLE REGULATORS
SLVS004C – APRIL 1979 – REVISED JULY 1999
schematic
INPUT
310 Ω
310 Ω
190 Ω
251 Ω
5.6 kΩ
2.1 kΩ
360 Ω
200 kΩ
11.5 kΩ
1.4 Ω
124 Ω
30
pF
2.12 kΩ
30
pF
195 Ω
670 Ω
5.3 kΩ 5.7 kΩ 70 Ω
5.1 kΩ
10.8 kΩ
OUTPUT
ADJUSTMENT
40 Ω
NOTE A: All component values shown are nominal.
†
absolute maximum ratings over operating temperature range (unless otherwise noted)
Input-to-output differential voltage, V – V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
O
l
Operating free-air, T , case, or virtual-junction temperature range, T : TL317C . . . . . . . . . . . . 0°C to 150°C
A
J
Package thermal impedance, θ (see Notes 1 and 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
JA
LP package . . . . . . . . . . . . . . . . . . . . . . . . . . 156°C/W
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.
D
J
A
JA
J
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
recommended operating conditions
MIN
MAX
35
UNIT
V
Input-to-output voltage differential, V – V
I
O
Output current, I
2.5
0
100
125
mA
°C
O
Operating virtual-junction temperature, T
TL317C
J
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL317
3-TERMINAL ADJUSTABLE REGULATORS
SLVS004C – APRIL 1979 – REVISED JULY 1999
electrical characteristics over recommended operating virtual-junction temperature range (unless
otherwise noted)
TL317C
†
PARAMETER
UNIT
TEST CONDITIONS
MIN
TYP
0.01
0.02
65
MAX
0.02
0.05
T = 25°C
J
Input voltage regulation (see Note 3)
V – V = 5 V to 35 V
%V
I
O
I
= 2.5 mA to 100 mA
O
V
V
= 10 V,
= 10 V,
f = 120 Hz
O
Ripple regulation
dB
O
66
80
10-µF capacitor between ADJUSTMENT and ground
V = 5 V to 35 V,
V
V
≤ 5 V
≥ 5 V
25
5
mV
I
O
I
= 2.5 mA to 100 mA,
O
mV/V
T = 25°C
O
J
Output voltage regulation
V
V
≤ 5 V
≥ 5 V
50
10
mV
V = 5 V to 35 V,
O
I
I
O
= 2.5 mA to 100 mA
mV/V
mV/V
O
Output voltage change with temperature
Output voltage long-term drift
Output noise voltage
T = 0°C to 125°C
J
10
After 1000 hours at T = 125°C and V – V = 35 V
3
10 mV/V
J
I
O
f = 10 Hz to 10 kHz,
V – V = 35 V
T = 25°C
J
30
µV/V
Minimum output current to maintain regulation
Peak output current
1.5
200
50
2.5
mA
mA
µA
I
O
V – V ≤ 35 V
100
1.2
I
O
ADJUSTMENT current
100
5
Change in ADJUSTMENT current
V – V = 2.5 V to 35 V,
I
I
= 2.5 mA to 100 mA
= 2.5 mA to 100 mA,
0.2
µA
I
O
O
V – V = 5 V to 35 V,
I
O
O
Reference voltage (output to ADJUSTMENT)
1.25
1.3
V
P ≤ rated dissipation
†
Unless otherwise noted, these specifications apply for the following test conditions: V – V = 5 V and I = 40 mA. Pulse-testing techniques must
be used that maintain the junction temperature as close to the ambient temperature as possible. All characteristics are measured with a 0.1-µF
capacitor across the input and a 1-µF capacitor across the output.
I
O
O
NOTE 3: Input voltage regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
electrical characteristics over recommended operating conditions, T = 25°C (unless otherwise
J
noted)
TL317Y
†
PARAMETER
UNIT
TEST CONDITIONS
MIN
TYP
0.01
65
MAX
Input voltage regulation (see Note 3)
V – V = 5 V to 35 V
%V
I
O
V
= 10 V,
f = 120 Hz
O
O
Ripple regulation
dB
V
= 10 V,
80
10-µF capacitor between ADJUSTMENT and ground
V
V
≤ 5 V
≥ 5 V
25
5
mV
mV/V
µV/V
mA
O
Output voltage regulation
I
= 2.5 mA to 100 mA
O
O
Output noise voltage
f = 10 Hz to 10 kHz
V – V = 35 V
30
Minimum output current to maintain regulation
Peak output current
1.5
200
50
I
O
V – V ≤ 35 V
mA
I
O
ADJUSTMENT current
µA
Change in ADJUSTMENT current
V – V = 2.5 V to 35 V,
I
I
= 2.5 mA to 100 mA
= 2.5 mA to 100 mA,
0.2
µA
I
O
O
V – V = 5 V to 35 V,
I
O
O
Reference voltage (output to ADJUSTMENT)
1.25
V
P ≤ rated dissipation
†
Unless otherwise noted, these specifications apply for the following test conditions: V – V = 5 V and I = 40 mA. Pulse-testing techniques must
be used that maintain the junction temperature as close to the ambient temperature as possible. All characteristics are measured with a 0.1-µF
capacitor across the input and a 1-µF capacitor across the output.
I
O
O
NOTE 3: Input voltage regulation is expressed here as the percentage change in output voltage per 1-V change at the input.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL317
3-TERMINAL ADJUSTABLE REGULATORS
SLVS004C – APRIL 1979 – REVISED JULY 1999
APPLICATION INFORMATION
TL317
Output
Adjustment
V
O
V
I
TL317
Output
Input
(see Note B)
V
O
35 V
Input
(see Note A)
R1
470 Ω
Adjustment
R1 = 120 Ω
C1 = 0.1 µF
C2 = 1 µF
(see Note A)
(see Note C)
–10 V
C1 = 0.1 µF
R2
R2 = 3 kΩ
R3 =
820 Ω
1N4002
NOTES: A. Use of an input bypass capacitor is recommended if
regulator is far from the filter capacitors.
B. Output voltage is calculated from the equation:
R2
VO
Vref 1
R1
NOTE A: Output voltage is calculated from the equation:
R2 R3
where: V equals the difference between OUTPUT and
ref
VO
Vref
1
10 V
ADJUSTMENT voltages (≈1.25 V).
C. Use of an output capacitor improves transient response
but is optional.
R1
where: V equals the difference between OUTPUT
and ADJUSTMENT voltages (≈1.25 V).
ref
Figure 1. Adjustable Voltage Regulator
Figure 2. 0-V to 30-V Regulator Circuit
TL317
V
O
V
Input
Output
I
(see Note A)
†
D1
1N4002
R1 =
470 Ω
Adjustment
C1 =
0.1 µF
+
–
R2 =
10 kΩ
C3 = 1 µF
+
–
C2 = 10 µF
TL317
1.25
Ilimit
V
I
Input
Output
†
D1 discharges C2 if output is shorted to ground.
R1
R1
NOTE A: Use of an output capacitor improves transient response but is
optional.
Adjustment
Figure 3. Regulator Circuit
Figure 4. Precision Current-Limiter Circuit
With Improved Ripple Rejection
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL317
3-TERMINAL ADJUSTABLE REGULATORS
SLVS004C – APRIL 1979 – REVISED JULY 1999
APPLICATION INFORMATION
R2 = 1.5 kΩ
R1 = 470 Ω
TL317
V
= 15 V
V
I
Input
Output
O
Adjustment
Input Output
TL317
Adjustment
R1 =
470 Ω
V
I
1N4002
TL317
Input
Output
V
O
R3 = 50 kΩ
Adjustment
R3 =
240 Ω
C1 = 0.1 µF
C2 = 1 µF
R2 = 5.1 kΩ
R4 =
2 kΩ
2N2905
Output
Adjust
C1 = 25 µF
Figure 5. Tracking Preregulator Circuit
Figure 6. Slow Turnon 15-V Regulator Circuit
TL317
V
I
Input
Output
Adjustment
240 Ω
TL317
1.1 kΩ
24 Ω
I
CHG
V
I
Input
Output
Adjustment
VBE
R
V
BE
ICHG
V–
Figure 7. 50-mA Constant-Current
Battery Charger Circuit
Figure 8. Current-Limited 6-V Charger
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL317
3-TERMINAL ADJUSTABLE REGULATORS
SLVS004C – APRIL 1979 – REVISED JULY 1999
APPLICATION INFORMATION
TIP73
2N2905
500 Ω
V
I
5 kΩ
TL317
Output
Adjustment
22 Ω
Input
V
O
120 Ω
1N4002
10 µF
†
47 µF
R
L
5 kΩ
‡
10 µF
†
‡
Minimum load current is 30 mA.
Optional capacitor improves ripple rejection
Figure 9. High-Current Adjustable Regulator
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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pertaining to warranty, patent infringement, and limitation of liability.
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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.
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DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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Copyright 1999, Texas Instruments Incorporated
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