Datasheet

LM120, LM320-N
www.ti.com SNVS756C –APRIL 1998–REVISED APRIL 2013
LM120K-15 AND LM320K-15 ELECTRICAL CHARACTERISTICS (continued)
Metal Can Package
Order Numbers
LM120K-15 LM320K-15
(TO-3) (TO-3)
Units
Design Output Current (I
D
) 1A
Device Dissipation (P
D
) 20W
Parameter Conditions
(1)
Min Typ Max Min Typ Max
Quiescent Current T
J
= 25°C
Change V
MIN
≤ V
IN
≤ V
MAX
0.1 0.4 0.1 0.4 mA
5 mA ≤ I
LOAD
≤ I
D
0.1 0.4 0.1 0.4 mA
Output Noise Voltage T
A
= 25°C, C
L
= 1 μF, I
L
= 5 mA, 400 400 μV
V
IN
= 20V, 10 Hz ≤ f ≤ 100 kHz
Long Term Stability 15 150 15 150 mV
Thermal Resistance
Junction to Case 3 3 °C/W
Junction to Ambient 35 35 °C/W
LM120H-15 ELECTRICAL CHARACTERISTICS
Metal Can Package
Order Numbers
LM120H-15
(TO)
Units
Design Output Current (I
D
) 0.2A
Device Dissipation (P
D
) 2W
Parameter Conditions
(1)
Min Typ Max
Output Voltage T
J
= 25°C, V
IN
= 20V, −15.3 −15 −14.7 V
I
LOAD
= 5 mA
Line Regulation T
J
= 25°C, I
LOAD
= 5 mA, 5 10 mV
V
MIN
≤ V
IN
≤ V
MAX
Input Voltage −35 −17 V
Ripple Rejection f = 120 Hz 56 80 dB
Load Regulation, T
J
= 25°C, V
IN
= 20V, 10 25 mV
(2)
5 mA ≤ I
LOAD
≤ I
D
Output Voltage, 17.5V ≤ V
IN
≤ V
MAX
, −15.5 −14.5 V
(1)
5 mA ≤ I
LOAD
≤ I
D
, P ≤ P
D
Quiescent Current V
MIN
≤ V
IN
≤ V
MAX
2 4 mA
Quiescent Current T
J
= 25°C
Change V
MIN
≤ V
IN
≤ V
MAX
0.05 0.4 mA
5 mA ≤ I
LOAD
≤ I
D
0.03 0.4 mA
Output Noise Voltage T
A
= 25°C, C
L
= 1 μF, I
L
= 5 mA, 400 μV
V
IN
= 20V, 10 Hz ≤ f ≤ 100 kHz
Long Term Stability 15 150 mV
Thermal Resistance
Junction to Case
(3)
°C/W
Junction to Ambient
(3)
°C/W
(1) This specification applies over −55°C ≤ T
J
≤ +150°C for the LM120 and 0°C ≤ T
J
≤ +125°C for the LM320-N.
(2) Regulation is measured at constant junction temperature. Changes in output voltage due to heating effects must be taken into account
separately. To ensure constant junction temperature, low duty cycle, pulse testing is used. The LM120/LM320-N series does have low
thermal feedback, improving line and load regulation. On all other tests, even though power dissipation is internally limited, electrical
specifications apply only up to P
D
.
(3) Thermal resistance of typically 85°C/W (in 400 linear feet/min air flow), 224°C/W (in static air) junction to ambient, of typically 21°C/W
junction to case.
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