Datasheet

LM120, LM320-N
SNVS756C –APRIL 1998–REVISED APRIL 2013 www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS−5 VOLT REGULATORS
(1)(2)(3)
Power Dissipation Internally Limited
Input Voltage −25V
Input-Output Voltage Differential 25V
Junction Temperatures
(4)
Storage Temperature Range −65°C to +150°C
Lead Temperature
(Soldering, 10 sec.) 300°C
Plastic 260°C
(1) Refer to RETS120-5H drawing for LM120H-5.0 or RETS120-5K drawing for LM120-5K military specifications.
(2) For −5V 3 amp regulators, see LM145 data sheet.
(3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(4) This specification applies over −55°C ≤ T
J
≤ +150°C for the LM120 and 0°C ≤ T
J
≤ +125°C for the LM320-N.
LM120K-5.0 AND LM320K-5.0 ELECTRICAL CHARACTERISTICS
(1)
Metal Can Package
Order Numbers
LM120K-5.0 LM320K-5.0
(TO-3) (TO-3)
Units
Design Output Current (I
D
) 1.5A
Device Dissipation (P
D
) 20W
Parameter Conditions
(2)
Min Typ Max Min Typ Max
Output Voltage T
J
= 25°C, V
IN
=10V, −5.1 −5 −4.9 −5.2 −5 −4.8 V
I
LOAD
= 5 mA
Line Regulation T
J
= 25°C, I
LOAD
= 5 mA, 10 25 10 40 mV
V
MIN
≤ V
IN
≤ V
MAX
Input Voltage −25 −7 −25 −7 V
Ripple Rejection f = 120 Hz 54 64 54 64 dB
Load Regulation, T
J
= 25°C, V
IN
= 10V, 50 75 60 100 mV
(3)
5 mA ≤ I
LOAD
≤ I
D
Output Voltage, −7.5V ≤ V
IN
≤ V
MAX
, −5.20 −4.80 −5.25 −4.75 V
(2)
5 mA ≤ I
LOAD
≤ I
D
, P ≤ P
D
Quiescent Current V
MIN
≤ V
IN
≤ V
MAX
1 2 1 2 mA
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, 150 150 μV
V
IN
= 10V, 10 Hz ≤ f ≤ 100 kHz
Long Term Stability 5 50 5 50 mV
Thermal Resistance
Junction to Case 3 3 °C/W
Junction to Ambient 35 35 °C/W
(1) For −5V 3 amp regulators, see LM145 data sheet.
(2) This specification applies over −55°C ≤ T
J
≤ +150°C for the LM120 and 0°C ≤ T
J
≤ +125°C for the LM320-N.
(3) 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
.
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