파트넘버.co.kr 317LB 데이터시트 PDF


317LB 반도체 회로 부품 판매점

LM317LB



ON Semiconductor 로고
ON Semiconductor
317LB 데이터시트, 핀배열, 회로
ON Semiconductort
100 mA Adjustable Output,
Positive Voltage Regulator
The LM317L is an adjustable 3–terminal positive voltage regulator
capable of supplying in excess of 100 mA over an output voltage range
of 1.2 V to 37 V. This voltage regulator is exceptionally easy to use
and requires only two external resistors to set the output voltage.
Further, it employs internal current limiting, thermal shutdown and
safe area compensation, making them essentially blow–out proof.
The LM317L serves a wide variety of applications including local,
on card regulation. This device can also be used to make a
programmable output regulator, or by connecting a fixed resistor
between the adjustment and output, the LM317L can be used as a
precision current regulator.
Output Current in Excess of 100 mA
Output Adjustable Between 1.2 V and 37 V
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe–Area Compensation
Floating Operation for High Voltage Applications
Standard 3–Lead Transistor Package
Eliminates Stocking Many Fixed Voltages
Simplified Application
Vin
Cin*
0.1µF
LM317L
IAdj
Adjust
R2
Vout
R1
240
+ CO**
1.0µF
www.DataSheet4U.com
LM317L
LOW CURRENT
THREE–TERMINAL
ADJUSTABLE POSITIVE
VOLTAGE REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
Z SUFFIX
PLASTIC PACKAGE
CASE 29
Pin 1. Adjust
2. Vout
3. Vin
1
2
3
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SOP–8*)
8
1
Pin 1. Vin
2. Vout
3. Vout
4. Adjust
5. N.C.
6. Vout
7. Vout
8. N.C.
*SOP–8 is an internally modified SO–8 package.
Pins 2, 3, 6 and 7 are electrically common to the
die attach flag. This internal lead frame modifi-
cation decreases package thermal resistance
and increases power dissipation capability
when appropriately mounted on a printed circuit
board. SOP–8 conforms to all external dimen-
sions of the standard SO–8 package.
ă* Cin is required if regulator is located an appreciable
** distance from power supply filter.
** CO is not needed for stability, however,
** it does improve transient response.
ǒ ǓVout + 1.25āVā
1
)
R2
R1
) IAdjāāR2
Since IAdj is controlled to less than 100 µA, the error
associated with this term is negligible in most applications.
ORDERING INFORMATION
Operating
Device Temperature Range
Package
LM317LD
LM317LZ
TJ = 0° to +125°C
SOP–8
Plastic
LM317LBD
LM317LBZ TJ = –40° to +125°C
SOP–8
Plastic
© Semiconductor Components Industries, LLC, 2002
January, 2002 – Rev. 3
1
Publication Order Number:
LM317L/D


317LB 데이터시트, 핀배열, 회로
MAXIMUM RATINGS
Rating
Input–Output Voltage Differential
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
LM317L
www.DataSheet4U.com
Symbol
VI–VO
PD
TJ
Tstg
Value
40
Internally Limited
–40 to +125
–65 to +150
Unit
Vdc
W
°C
°C
ELECTRICAL CHARACTERISTICS (VI–VO = 5.0 V; IO = 40 mA; TJ = Tlow to Thigh [Note 1]; Imax and Pmax [Note 2];
unless otherwise noted.)
LM317L, LB
Characteristics
Figure Symbol Min Typ Max Unit
Line Regulation (Note 3)
TA = 25°C, 3.0 V VI – VO 40 V
Load Regulation (Note 3), TA = 25°C
10 mA IO Imax – LM317L
VO 5.0 V
VO 5.0 V
Adjustment Pin Current
Adjustment Pin Current Change
2.5 V VI – VO 40 V, PD Pmax
10 mA IO Imax – LM317L
Reference Voltage
3.0 V VI – VO 40 V, PD Pmax
10 mA IO Imax – LM317L
Line Regulation (Note 3)
3.0 V VI – VO 40 V
1
Regline
– 0.01 0.04 %/V
2 Regload
– 5.0 25 mV
– 0.1 0.5 % VO
3 IAdj – 50 100 µA
1, 2 IAdj – 0.2 5.0 µA
3
Vref
1.20 1.25 1.30
V
1
Regline
– 0.02 0.07 %/V
Load Regulation (Note 3)
10 mA IO Imax – LM317L
VO 5.0 V
VO 5.0 V
Temperature Stability (Tlow TJ Thigh)
Minimum Load Current to Maintain Regulation (VI – VO = 40 V)
Maximum Output Current
VI – VO 6.25 V, PD Pmax, Z Package
VI – VO 40 V, PD Pmax, TA = 25°C, Z Package
RMS Noise, % of VO
TA = 25°C, 10 Hz f 10 kHz
2 Regload
– 20 70 mV
– 0.3 1.5 % VO
3 TS – 0.7 – % VO
3
ILmin
– 3.5 10 mA
3 Imax
mA
100 200
– 20 –
N – 0.003 – % VO
Ripple Rejection (Note 4)
VO = 1.2 V, f = 120 Hz
CAdj = 10 µF, VO = 10.0 V
Long Term Stability, TJ = Thigh (Note 5)
TA = 25°C for Endpoint Measurements
Thermal Resistance, Junction–to–Case
Z Package
4 RR
dB
60 80
– 80 –
3 S – 0.3 1.0 %/1.0 k
Hrs.
RθJC
– 83 – °C/W
Thermal Resistance, Junction–to–Air
Z Package
RθJA
– 160 – °C/W
NOTES: 1. Tlow to Thigh = 0° to +125°C for LM317L
–40° to +125°C for LM317LB
2. Imax = 100 mA Pmax = 625 mW
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. 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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