LM120, LM320-N
SNVS756C –APRIL 1998–REVISED APRIL 2013
www.ti.com
LM320T-12 ELECTRICAL CHARACTERISTICS (continued)
Power Plastic Package
Order Numbers
LM320T-12
(TO-220)
Units
Design Output Current (ID)
1A
Device Dissipation (PD)
15W
(1)
Parameter
Conditions
TA = 25°C, CL = 1 μF, IL = 5 mA,
VIN = 17V, 10 Hz ≤ f ≤ 100 kHz
Min
Typ
Max
Output Noise Voltage
400
μV
Long Term Stability
Thermal Resistance
Junction to Case
24
mV
4
°C/W
°C/W
Junction to Ambient
50
ABSOLUTE MAXIMUM RATINGS−15 VOLT REGULATORS(1)(2)
Power Dissipation
Internally Limited
Input Voltage
LM120/LM320-N
−40V
−35V
LM320T
Input-Output Voltage Differential
Junction Temperatures
Storage Temperature Range
Lead Temperature
(Soldering, 10 sec.)
30V
(3)
−65°C to +150°C
300°C
(1) Refer to RETS120-15H drawing for LM120H-15 or RETS120-15K drawing for LM120K-15 military specifications.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3) This specification applies over −55°C ≤ TJ ≤ +150°C for the LM120 and 0°C ≤ TJ ≤ +125°C for the LM320-N.
LM120K-15 AND LM320K-15 ELECTRICAL CHARACTERISTICS
Metal Can Package
Order Numbers
LM120K-15
(TO-3)
LM320K-15
(TO-3)
Units
Design Output Current (ID)
Device Dissipation (PD)
1A
20W
(1)
Parameter
Output Voltage
Conditions
Min
Typ
Max
Min
Typ
Max
TJ = 25°C, VIN = 20V,
ILOAD = 5 mA
−15.3
−15
−14.7 −15.4
−15
−14.6
V
Line Regulation
TJ = 25°C, ILOAD = 5 mA,
5
10
5
20
−17
80
mV
VMIN ≤ VIN ≤ VMAX
Input Voltage
−35
−17
−35
V
Ripple Rejection
f = 120 Hz
56
80
30
56
80
30
dB
mV
Load Regulation,
(2)
TJ = 25°C, VIN = 20V,
5 mA ≤ ILOAD ≤ ID
80
Output Voltage,
(1)
17.5V ≤ VIN ≤ VMAX
5 mA ≤ ILOAD ≤ ID, P ≤ PD
MIN ≤ VIN ≤ VMAX
,
−15.5
−14.5 −15.6
−14.4
4
V
Quiescent Current
V
2
4
2
mA
(1) This specification applies over −55°C ≤ TJ ≤ +150°C for the LM120 and 0°C ≤ TJ ≤ +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 PD.
6
Submit Documentation Feedback
Copyright © 1998–2013, Texas Instruments Incorporated
Product Folder Links: LM120 LM320-N
TI [ TEXAS INSTRUMENTS ]
