LM337
MAXIMUM RATINGS
Rating
Input–Output Voltage Differential
Power Dissipation
Case 221A
TA = +25°C
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Case 936 (D2PAK)
TA = +25°C
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
Operating Junction Temperature Range
Storage Temperature Range
Symbol
VI–VO
Value
40
Unit
Vdc
PD
θ
JA
θ
JC
PD
θ
JA
θ
JC
TJ
Tstg
Internally Limited
65
5.0
Internally Limited
70
5.0
– 40 to +125
– 65 to +150
W
°C/W
°C/W
W
°C/W
°C/W
°C
°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
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
|VO|
≤
5.0 V
|VO|
≥
5.0 V
Thermal Regulation, TA = +25°C (Note 6), 10 ms Pulse
Adjustment Pin Current
Adjustment Pin Current Change, 2.5 V
≤
|VI–VO|
≤
40 V,
10 mA
≤
IL
≤
Imax, PD
≤
Pmax, TA = +25°C
Reference Voltage, TA = +25°C, 3.0 V
≤
|VI–VO|
≤
40 V,
10 mA
≤
IO
≤
Imax, PD
≤
Pmax, TJ = Tlow to Thigh
Line Regulation (Note 3), 3.0 V
≤
|VI–VO|
≤
40 V
Load Regulation (Note 3), 10 mA
≤
IO
≤
Imax
|VO|
≤
5.0 V
|VO|
≥
5.0 V
Temperature Stability (Tlow
≤
TJ
≤
Thigh)
Minimum Load Current to Maintain Regulation
(|VI–VO|
≤
10 V)
(|VI–VO|
≤
40 V)
Maximum Output Current
|VI–VO|
≤
15 V, PD
≤
Pmax, T Package
|VI–VO|
≤
40 V, PD
≤
Pmax, TJ = +25°C, T Package
RMS Noise, % of VO, TA = +25°C, 10 Hz
≤
f
≤
10 kHz
Ripple Rejection, VO = –10 V, f = 120 Hz (Note 4)
Without CAdj
CAdj = 10
µF
Long–Term Stability, TJ = Thigh (Note 5), TA = +25°C for
Endpoint Measurements
Thermal Resistance Junction–to–Case, T Package
4
3
1, 2
3
1
2
Figure
1
2
Symbol
Regline
Regload
–
–
Regtherm
IAdj
∆I
Adj
Vref
Regline
Regload
–
–
3
3
TS
ILmin
–
–
3
Imax
–
–
N
RR
–
66
3
S
R
θJC
–
–
60
77
0.3
4.0
–
–
1.0
–
%/1.0 k
Hrs.
°C/W
–
1.5
0.15
0.003
2.2
0.4
–
% VO
dB
1.5
2.5
6.0
10
A
–
20
0.3
0.6
70
1.5
–
mV
% VO
% VO
mA
–
–
–
–1.213
–1.20
–
15
0.3
0.003
65
2.0
–1.250
–1.25
0.02
50
1.0
0.04
100
5.0
–1.287
–1.30
0.07
mV
% VO
% VO/W
µA
µA
V
%/V
Min
–
Typ
0.01
Max
0.04
Unit
%/V
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.
2
MOTOROLA ANALOG IC DEVICE DATA
ONSEMI [ ON SEMICONDUCTOR ]
