LM317LCDRG4 [TI]

100mA、35V 可调节线性稳压器 | D | 8 | 0 to 125;


型号：	LM317LCDRG4
厂家：	TEXAS INSTRUMENTS
描述：	100mA、35V 可调节线性稳压器 \| D \| 8 \| 0 to 125 电源电路线性稳压器IC
文件：	总12页 (文件大小：268K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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ꢂ ꢅꢆ ꢇꢈꢁ ꢉꢊꢋ ꢀ ꢋꢌꢍ ꢎꢏ ꢆꢋꢐꢀ ꢇ ꢈꢇꢑ ꢎ ꢀꢋꢆꢒ ꢈ

SLCS144 − JULY 2004

D OR PW PACKAGE

(TOP VIEW)

Output Voltage Range Adjustable From

1.2 V to 32 V When Used With an External

Resistor Divider

INPUT

Output Current Capability of 100 mA

OUTPUT

ADJUSTMENT

OUTPUT

Input Regulation Typically 0.01% Per

Input-Voltage Change

Output Regulation Typically 0.5%

Ripple Rejection Typically 80 dB

NC − No internal connection

OUTPUT terminals are all internally connected.

For Higher Output Current Requirements,

See LM317M (500 mA) and LM317 (1.5 A)

LP PACKAGE

(TOP VIEW)

description/ordering information

INPUT

The LM317L 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.

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 LM317L 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

shutdown can be achieved by clamping ADJUSTMENT to ground, programming the output to 1.2 V, where most

loads draw little current.

The LM317LC is characterized for operation over the virtual junction temperature range of 0°C to 125°C.

ORDERING INFORMATION

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

†

PACKAGE

Tube of 75

LM317LCD

SOIC (D)

L317LC

Reel of 2500

Bulk of 1000

Reel of 2000

Tube of 150

Reel of 2000

LM317LCDR

LM317LCLP

LM317LCLPR

LM317LCPW

LM317LCPWR

0°C to 125°C

TO-226 / TO-92 (LP)

TSSOP (PW)

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.

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.

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POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁ ꢂꢃ ꢄꢀ

ꢂꢅ ꢆ ꢇꢈ ꢁꢉ ꢊ ꢋ ꢀ ꢋ ꢌꢍ ꢎꢏ ꢆꢋꢐ ꢀꢇ ꢈꢇ ꢑ ꢎꢀꢋꢆꢒꢈ

SLCS144 − JULY 2004

schematic

INPUT

310 Ω

190 Ω

251 W

5.6 kΩ

2.1 kΩ

360 Ω

200 kΩ

11.5 kΩ

1.4 Ω

124 Ω

2.12 kΩ

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

Package thermal impedance, θ (see Notes 1 and 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W

LP package . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W

PW package . . . . . . . . . . . . . . . . . . . . . . . . . 149°C/W

Operating virtual junction temperature, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°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

ambient temperature is P = (T (max) − T )/θ . Operating at the absolute maximum T of 150°C can affect reliability.

2. The package thermal impedance is calculated in accordance with JESD 51-7.

recommended operating conditions

MIN

MAX

UNIT

V − V

Input-to-output voltage differential

Output current

2.5

100

125

°C

Operating virtual-junction temperature

LM317LC

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀꢁ ꢂ ꢃꢄ ꢀ

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SLCS144 − JULY 2004

electrical characteristics over recommended operating virtual-junction temperature range (unless

otherwise noted)

LM317LC

†

PARAMETER

UNIT

TEST CONDITIONS

MIN

TYP

0.01

0.02

MAX

0.02

0.05

T = 25°C

Input voltage regulation (see Note 3)

V − V = 5 V to 35 V

= 2.5 mA to 100 mA

= 10 V,

f = 120 Hz

Ripple regulation

10-µF capacitor between ADJUSTMENT and ground

V = 5 V to 35 V,

≤ 5 V

≥ 5 V

= 2.5 mA to 100 mA,

mV/V

T = 25°C

Output voltage regulation

≤ 5 V

≥ 5 V

V = 5 V to 35 V,

= 2.5 mA to 100 mA

mV/V

Output voltage change with temperature

Output voltage long-term drift

Output noise voltage

T = 0°C to 125°C

After 1000 hours at T = 125°C and V − V = 35 V

10 mV/V

f = 10 Hz to 10 kHz,

V − V = 35 V

T = 25°C

µV/V

Minimum output current to maintain regulation

Peak output current

1.5

200

2.5

µA

V − V ≤ 35 V

100

1.2

ADJUSTMENT current

100

Change in ADJUSTMENT current

V − V = 2.5 V to 35 V,

= 2.5 mA to 100 mA

= 2.5 mA to 100 mA,

0.2

µA

V − V = 5 V to 35 V,

Reference voltage (output to ADJUSTMENT)

1.25

1.3

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.

NOTE 3: Input voltage regulation is expressed here as the percentage change in output voltage per 1-V change at the input.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

ꢀ ꢁ ꢂꢃ ꢄꢀ

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SLCS144 − JULY 2004

APPLICATION INFORMATION

LM317L

Output

Adjustment

LM317L

Output

Input

(see Note B)

35 V

Input

(see Note A)

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 = 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}ǒ^{is calculated from the equation:}

V_O+ V_ref1 )

NOTE A: Output voltage is calculated from the equation:

where: V equals the difference between OUTPUT and

ref

R2 ) R3

ǒ_{1 )}

Ǔ_{* 10 V}

V_O+ V_ref

ADJUSTMENT voltages (≈1.25 V).

C. Use of an output capacitor improves transient response,

but is optional.

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

LM317L

Input

Output

(see Note A)

†

1N4002

R1 =

470 Ω

Adjustment

C1 =

0.1 µF

−

R2 =

10 kΩ

C3 = 1 µF

−

C2 = 10 µF

LM317L

Input Output

Adjustment

1.25

I_limit

†

D1 discharges C2 if output is shorted to ground.

NOTE A: Use of an output capacitor improves transient response, but is

optional.

Figure 3. Regulator Circuit

With Improved Ripple Rejection

Figure 4. Precision Current-Limiter Circuit

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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SLCS144 − JULY 2004

APPLICATION INFORMATION

R2 = 1.5 kΩ

R1 = 470 Ω

LM317L

= 15 V

Input

Output

Adjustment

Input Output

LM317L

Adjustment

R1 =

470 Ω

1N4002

LM317L

Input

Output

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

LM317L

Input

Output

Adjustment

240 Ω

LM317L

1.1 kΩ

24 Ω

CHG

Input

Output

Adjustment

V_BE

R +

I_CHG

V−

Figure 7. 50-mA Constant-Current

Battery-Charger Circuit

Figure 8. Current-Limited 6-V Charger

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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SLCS144 − JULY 2004

APPLICATION INFORMATION

TIP73

2N2905

500 Ω

5 kΩ

LM317L

Input Output

Adjustment

22 Ω

120 Ω

1N4002

10 µF

†

47 µF

5 kΩ

‡

10 µF

†

‡

Minimum load current is 30 mA.

Optional capacitor improves ripple rejection.

Figure 9. High-Current Adjustable Regulator

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PACKAGE OPTION ADDENDUM

www.ti.com

25-Feb-2005

PACKAGING INFORMATION

Orderable Device

LM317LCD

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SOIC

Pb-Free

(RoHS)

CU NIPDAU Level-2-260C-1 YEAR/

Level-1-235C-UNLIM

LM317LCDR

SOIC

2500

Pb-Free

(RoHS)

CU NIPDAU Level-2-260C-1 YEAR/

Level-1-235C-UNLIM

LM317LCLP

LM317LCLPR

LM317LCPW

ACTIVE

TO-92

TSSOP

1000

2000

150

None

CU SNPB

Level-NC-NC-NC

Pb-Free

(RoHS)

CU NIPDAU Level-1-250C-UNLIM

LM317LCPWR

ACTIVE

TSSOP

2000

Pb-Free

(RoHS)

CU NIPDAU Level-1-250C-UNLIM

⁽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

MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001

LP (O-PBCY-W3)

PLASTIC CYLINDRICAL PACKAGE

0.205 (5,21)

0.175 (4,44)

0.165 (4,19)

0.125 (3,17)

DIA

0.210 (5,34)

0.170 (4,32)

Seating

Plane

0.157 (4,00) MAX

0.050 (1,27)

0.500 (12,70) MIN

0.022 (0,56)

0.016 (0,41)

0.014 (0,35)

0.104 (2,65)

FORMED LEAD OPTION

STRAIGHT LEAD OPTION

0.135 (3,43) MIN

0.105 (2,67)

0.095 (2,41)

0.055 (1,40)

0.045 (1,14)

0.105 (2,67)

0.080 (2,03)

0.105 (2,67)

0.080 (2,03)

4040001-2/C 10/01

NOTES: A. All linear dimensions are in inches (millimeters).

B. This drawing is subject to change without notice.

C. Lead dimensions are not controlled within this area

D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92)

E. Shipping Method:

Straight lead option available in bulk pack only.

Formed lead option available in tape & reel or ammo pack.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MECHANICAL DATA

MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001

LP (O-PBCY-W3)

PLASTIC CYLINDRICAL PACKAGE

0.539 (13,70)

0.460 (11,70)

1.260 (32,00)

0.905 (23,00)

0.650 (16,50)

0.610 (15,50)

0.020 (0,50) MIN

0.098 (2,50)

0.384 (9,75)

0.335 (8,50)

0.748 (19,00)

0.217 (5,50)

0.748 (19,00)

0.689 (17,50)

0.433 (11,00)

0.335 (8,50)

0.114 (2,90)

0.094 (2,40)

0.114 (2,90)

0.094 (2,40)

0.169 (4,30)

0.146 (3,70)

DIA

0.266 (6,75)

0.234 (5,95)

0.512 (13,00)

0.488 (12,40)

TAPE & REEL

4040001-3/C 10/01

NOTES: A. All linear dimensions are in inches (millimeters).

B. This drawing is subject to change without notice.

C. Tape and Reel information for the Format Lead Option package.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

MECHANICAL DATA

MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999

PW (R-PDSO-G**)

PLASTIC SMALL-OUTLINE PACKAGE

14 PINS SHOWN

0,30

0,19

0,10

0,65

0,15 NOM

4,50

4,30

6,60

6,20

Gage Plane

0,25

0°–8°

0,75

0,50

Seating Plane

0,10

0,15

0,05

1,20 MAX

PINS **

DIM

3,10

2,90

5,10

4,90

5,10

4,90

6,60

6,40

7,90

9,80

9,60

A MAX

A MIN

7,70

4040064/F 01/97

NOTES: A. All linear dimensions are in millimeters.

B. This drawing is subject to change without notice.

C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.

D. Falls within JEDEC MO-153

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,

enhancements, improvements, and other changes to its products and services at any time and to discontinue

any product or service without notice. Customers should obtain the latest relevant information before placing

orders and should verify that such information is current and complete. All products are sold subject to TI’s terms

and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI

deems necessary to support this warranty. Except where mandated by government requirements, testing of all

parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for

their products and applications using TI components. To minimize the risks associated with customer products

and applications, customers should provide adequate design and operating safeguards.

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Mailing Address:

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Post Office Box 655303 Dallas, Texas 75265

LM317LCDRG4 [TI]

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