Data Sheet

LM79XX
2
Absolute Maximum Ratings
Note:
1. Thermal resistance test board
Size: 76.2mm * 114.3mm * 1.6mm(1S0P)
JEDEC standard: JESD51-3, JESD51-7
2. Assume no ambient airflow
Electrical Characteristics (LM7905)
(V
I
= -10V, I
O
= 500mA, 0°C ≤T
J
≤ +125°C, C
I
=2.2μF, C
O
=1μF, unless otherwise specified.)
Note
3. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Value Unit
Input Voltage V
I
-35 V
Thermal Resistance Junction-Case (Note1) R
θJC
5
°C/W
Thermal Resistance Junction-Air (Note1, 2) R
θJA
65
Operating Temperature Range T
OPR
0 ~ +125 °C
Storage Temperature Range T
STG
-65 ~ +150 °C
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage V
O
T
J
= +25°C -4.8 -5.0 -5.2
V
I
O
= 5mA to 1A, P
O ≤
15W
V
I
= -7V to -20V
-4.75 -5.0 -5.25
Line Regulation (Note3) ΔV
O
T
J
= +25°C
V
I
= -7V to -25V - 35 100
mV
V
I
= -8V to -12V - 8 50
Load Regulation (Note3) ΔV
O
T
J
= +25°C
I
O
= 5mA to 1.5A
-10100
mV
T
J
=+25°C
I
O
= 250mA to 750mA
-350
Quiescent Current I
Q
T
J
=+25°C-36mA
Quiescent Current Change ΔI
Q
I
O
= 5mA to 1A - 0.05 0.5
mA
V
I
= -8V to -25V - 0.1 0.8
Temperature Coefficient of V
D
ΔVo/ΔTI
O
= 5mA - - 0.4 - mV/°C
Output Noise Voltage V
N
f = 10Hz to 100kHz
T
A
=+25°C
-40 - μV
Ripple Rejection RR
f = 120Hz
ΔV
I
= 10V
54 60 - dB
Dropout Voltage V
D
T
J
= +25°C
I
O
= 1A
-2 - V
Short Circuit Current I
SC
T
J
=+25°C, V
I
= -35V - 300 - mA
Peak Current I
PK
T
J
=+25°C-2.2-A