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LM337 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. LM337
Description  THREE-TERMINAL ADJUSTABLE NEGATIVE VOLTAGE REGULATOR
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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LM337 Datasheet(HTML) 2 Page - ON Semiconductor

   
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LM337
2
MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input–Output Voltage Differential
VI–VO
40
Vdc
Power Dissipation
Case 221A
TA = +25°C
PD
Internally Limited
W
Thermal Resistance, Junction–to–Ambient
θJA
65
°C/W
Thermal Resistance, Junction–to–Case
θJC
5.0
°C/W
Case 936 (D2PAK)
TA = +25°C
PD
Internally Limited
W
Thermal Resistance, Junction–to–Ambient
θJA
70
°C/W
Thermal Resistance, Junction–to–Case
θJC
5.0
°C/W
Operating Junction Temperature Range
TJ
– 40 to +125
°C
Storage Temperature Range
Tstg
– 65 to +150
°C
ELECTRICAL CHARACTERISTICS (|VI–VO| = 5.0 V; IO = 0.5 A for T package; TJ = Tlow to Thigh [Note 1]; Imax and Pmax [Note 2].)
Characteristics
Figure
Symbol
Min
Typ
Max
Unit
Line Regulation (Note 3), TA = +25°C, 3.0 V ≤ |VI–VO| ≤ 40 V
1
Regline
0.01
0.04
%/V
Load Regulation (Note 3), TA = +25°C, 10 mA ≤ IO ≤ Imax
|VO| ≤ 5.0 V
|VO| ≥ 5.0 V
2
Regload
15
0.3
50
1.0
mV
% VO
Thermal Regulation, TA = +25°C (Note 6), 10 ms Pulse
Regtherm
0.003
0.04
% VO/W
Adjustment Pin Current
3
IAdj
65
100
µA
Adjustment Pin Current Change, 2.5 V
≤ |VI–VO| ≤ 40 V,
10 mA
≤ IL ≤ Imax, PD ≤ Pmax, TA = +25°C
1, 2
∆IAdj
2.0
5.0
µA
Reference Voltage, TA = +25°C, 3.0 V ≤ |VI–VO| ≤ 40 V,
10 mA
≤ IO ≤ Imax, PD ≤ Pmax, TJ = Tlow to Thigh
3
Vref
–1.213
–1.20
–1.250
–1.25
–1.287
–1.30
V
Line Regulation (Note 3), 3.0 V
≤ |VI–VO| ≤ 40 V
1
Regline
0.02
0.07
%/V
Load Regulation (Note 3), 10 mA
≤ IO ≤ Imax
|VO| ≤ 5.0 V
|VO| ≥ 5.0 V
2
Regload
20
0.3
70
1.5
mV
% VO
Temperature Stability (Tlow ≤ TJ ≤ Thigh)
3
TS
0.6
% VO
Minimum Load Current to Maintain Regulation
(|VI–VO| ≤ 10 V)
(|VI–VO| ≤ 40 V)
3
ILmin
1.5
2.5
6.0
10
mA
Maximum Output Current
|VI–VO| ≤ 15 V, PD ≤ Pmax, T Package
|VI–VO| ≤ 40 V, PD ≤ Pmax, TJ = +25°C, T Package
3
Imax
1.5
0.15
2.2
0.4
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 µF
4
RR
66
60
77
dB
Long–Term Stability, TJ = Thigh (Note 5), TA = +25°C for
Endpoint Measurements
3
S
0.3
1.0
%/1.0 k
Hrs.
Thermal Resistance Junction–to–Case, T Package
R
θJC
4.0
°C/W
NOTES: 1. Tlow to Thigh = 0° to +125°C, for LM337T, D2T.
Tlow to Thigh = – 40° to +125°C, for LM337BT, BD2T.
2. Imax = 1.5 A, Pmax = 20 W
3. Load and line regulation are specified at constant junction temperature. Change in VO because of heating effects is covered under the Thermal
Regulation specification. Pulse testing with a 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.
6. Power dissipation within an IC voltage regulator produces a temperature gradient on the die, affecting individual IC components on the die. These
effects can be minimized by proper integrated circuit design and layout techniques. Thermal Regulation is the effect of these temperature gradients
on the output voltage and is expressed in percentage of output change per watt of power change in a specified time.


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