LM317M_14 datasheet(2/14 Pages) ONSEMI

No. de pieza	LM317M

Descripción Electrónicos	500 mA Adjustable Output Positive Voltage Regulator

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LM317M, NCV317MA, NCV317M

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MAXIMUM RATINGS (TA = 25°C, unless otherwise noted.)

Rating

Symbol

Value

Unit

Input−Output Voltage Differential

VI−VO

40

Vdc

Power Dissipation (Package Limitation) (Note 1)

Plastic Package, T Suffix, Case 221A

TA = 25°C

Thermal Resistance, Junction−to−Air

Thermal Resistance, Junction−to−Case

Plastic Package, DT Suffix, Case 369C

TA = 25°C

Thermal Resistance, Junction−to−Air

Thermal Resistance, Junction−to−Case

Plastic Package, ST Suffix, Case 318E

TA = 25°C

Thermal Resistance, Junction−to−Air

Thermal Resistance, Junction−to−Case

PD

qJA

qJC

PD

qJA

qJC

PD

qJA

qJC

Internally Limited

70

5.0

Internally Limited

92

5.0

Internally Limited

245

15

°C/W

Operating Junction Temperature Range

TJ

− 40 to +150

°C

Storage Temperature Range

Tstg

− 65 to +150

°C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. Figure 25 provides thermal resistance versus PC board pad size.

ELECTRICAL CHARACTERISTICS (VI − VO = 5.0 V; IO = 0.1 A, TJ = Tlow to Thigh (Note 2), unless otherwise noted.)

Characteristics

Figure

Symbol

LM317M/LM317MB/NCV317MB

Unit

Min

Typ

Max

Line Regulation (Note 3) (TA = 25°C, 3.0 V ≤ VI − VO ≤ 40 V)

3

Regline

−

0.01

0.04

%/V

Load Regulation (Note 3)

TA = 25°C, 10 mA ≤ IO ≤ 0.5 A

VO ≤ 5.0 V

VO ≥ 5.0 V

4

Regload

−

5.0

0.1

25

0.5

mV

% VO

Adjustment Pin Current

5

IAdj

−

50

100

mA

Adjustment Pin Current Change

2.5 V

≤ VI − VO ≤ 40 V, 10 mA ≤ IL ≤ 0.5 A, PD ≤ Pmax

3, 4

DIAdj

−

0.2

5.0

mA

Reference Voltage

3.0 V

≤ VI − VO ≤ 40 V, 10 mA ≤ IL ≤ 0.5 A, PD ≤ Pmax

5

Vref

1.20

1.25

1.30

V

Line Regulation 3.0 V

≤ VI−VO ≤ 40 V (Note 3)

3

Regline

−

0.02

0.07

%/V

Load Regulation 10 mA

≤ IO ≤ 0.5 A (Note 3)

VO ≤ 5.0 V

VO ≥ 5.0 V

4

Regload

−

20

0.3

70

1.5

mV

% VO

Temperature Stability (Tlow ≤ TJ ≤ Thigh)

5

TS

−

0.7

−

% VO

Minimum Load Current to Maintain Regulation (VI − VO = 40 V)

5

ILmin

−

3.5

10

mA

Maximum Output Current

VI − VO ≤ 15 V, PD ≤ Pmax

VI − VO = 40 V, PD ≤ Pmax, TA = 25°C

5

Imax

0.5

0.15

0.9

0.25

−

A

RMS Noise, % of VO (TA = 25°C, 10 Hz ≤ f ≤ 10 kHz)

−

N

−

0.003

−

% VO

Ripple Rejection, VO = 10 V, f = 120 Hz (Note 4)

Without CAdj

CAdj = 10 mF

6

RR

−

66

65

80

−

dB

Thermal Shutdown (Note 5)

−

180

−

°C

Long−Term Stability, TJ = Thigh (Note 6)

TA= 25°C for End−point Measurements

5

S

−

0.3

1.0

%/1.0

kHrs.

2. Tlow to Thigh = 0° to +125°C for LM317M

Tlow to Thigh = − 40° to +125°C for LM317MB, NCV317MB.

3. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account

separately. Pulse testing with low duty cycle is used.

4. CAdj, when used, is connected between the adjustment pin and ground.

5. Thermal characteristics are not subject to production test.

6. Since Long−Term Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average

stability from lot−to−lot.

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