
 Bay Linear, Inc    
2478 Armstrong Street, Livermore, CA 94550   Tel: (925) 989-7144, Fax: (925) 940-9556               www.baylinear.com
LM79LXX 
Absolute Maximum Rating 
Parameter 
Input Voltage 
Operating Free-Air, Case, Virtual 
Junction Temp. 
Storage Temperature Range 
Lead temperature 1.6 mm from case 
for sec. 
Electrical Characteristics (LM79L05) 
(V
I
=10V, I
O
=40mA, 0
°
C 
≤
T
J
≤
125 
°
C, C
I
 = 0.33
μ
F, C
O
 = 0.1
μ
F, unless otherwise specified. (Note 1) 
Parameter 
Symbol 
Conditions 
Output Voltage 
V
O 
T
J 
= 25 
°
C
V
I
 = -7V to -20V  T
J 
= 25 
°
C
Line Regulation 
V
O 
V
I
 = -7V to -20V  T
J 
= 25 
°
C
I
O 
= 1mA to 100mA, 25 
°
C
Load Regulation 
V
O
I
O 
= 1mA to 40mA, 25 
°
C
Ripple Rejection 
RR 
V
I 
= -8V to -18V, f=120Hz 
Output Noise Voltage 
V
N 
F= 10Hz to 100Hz  T
J 
= 25 
°
C
Dropout Voltage 
V
D 
T
J 
= 25 
°
C
Quiescent Current 
T
J 
= 25 
°
C
V
I
 = -8V to -20V,  T
J 
= 25 
°
C
Quiescent Current 
Change 
I
O
 = 1mA to 40mA,  T
J 
= 25 
°
C
Electrical Characteristics (LM79L12) 
(V
I
=10V, I
O
=40mA, 0
°
C 
≤
T
J
≤
125 
°
C, C
I
 = 0.33
μ
F, C
O
 = 0.1
μ
F, unless otherwise specified. (Note 1) 
Parameter 
Symbol 
Conditions 
Output Voltage 
V
O 
T
J 
= 25 
°
C
V
I
 =-14.5V to -27V  T
J 
= 25 
°
C
Line Regulation 
V
O 
V
I
 =- 14.5V to -27V  T
J 
= 25 
°
C
I
O 
= 1mA to 100mA, 25 
°
C
Load Regulation 
V
O
I
O 
= 1mA to 40mA, 25 
°
C
Ripple Rejection 
RR 
V
I 
= -16V to -27V, f=120Hz 
Output Noise Voltage 
V
N 
F= 10Hz to 100Hz TJ
= 25 
°
C
Dropout Voltage 
V
D 
T
J 
= 25 
°
C
Quiescent Current 
T
J 
= 25 
°
C
V
I
 = -16V to -27V,  T
J 
= 25 
°
C
Quiescent Current 
Change 
I
O
 = 1mA to 40mA,  T
J 
= 25 
°
C
LM79L05 
-30 
0 to 150 
LM78L12…LM78L18 
-35 
0 to 150 
LM78L24 
-40 
0 to 150 
Unit 
V 
°
C 
-65 to 150 
260 
-65 to 150 
260 
-65 to 150 
260 
MIN 
-4.8 
TYP 
-5.0 
15 
MAX 
-5.2 
150 
100 
60 
30 
6mA 
1.5 
0.1 
UNIT 
V 
mV 
20 
10 
49 
46 
1.7 
mV 
41 
dB 
μ
V 
V 
mA 
mA 
I
Q 
MIN 
-11.50 
TYP 
-12 
50 
40 
24 
15 
42 
80 
1.7 
MAX 
-12.5 
250 
200 
100 
50 
6.5mA 
1.5 
0.1 
UNIT 
V 
mV 
mV 
37 
dB 
μ
V 
V 
mA 
mA 
I
Q