Voltage Regulator. NTE1956 Datasheet

NTE1956 Regulator. Datasheet pdf. Equivalent

Part NTE1956
Description Integrated Circuit Positive 3 Terminal Voltage Regulator
Feature NTE1956 Integrated Circuit Positive 3 Terminal Voltage Regulator, Low Dropout Voltage, 24V, 1A Descr.
Manufacture NTE
Datasheet
Download NTE1956 Datasheet



NTE1956
NTE1956
Integrated Circuit
Positive 3 Terminal Voltage Regulator,
Low Dropout Voltage, 24V, 1A
Description:
The NTE1956 is a positive voltage regulator in a TO220 type package with a low input/output voltage.
This device is suitable for low–voltage, battery–driven equipment, and home appliances and industrial
equipment with great fluctuation of the supply voltage.
Features:
D Minimum Input/Output Voltage Difference: 0.5V Typ
D On–Chip Overcurrent Limiter
D On–Chip Thermal Protection Circuit
D On–Chip Inrush Current Protection Circuit at the time of Input Voltage Start–Up
D On–Chip Input Short–Circuit Protection Circuit (When the Input Pin is Short–Circuited to the
Ground, the Circuit Between Pin1 and Pin3 is Shut Down to Prevent Current Flow)
Applications:
D Power Supply Equipment
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage (Note 1), VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V
Supply Current (Note 2), IIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4A
Power Dissipation (Note 3), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15W
Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +85°C
Storage Junction Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C/W
Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5°C/W
Note 1. At the application of VIN = 30V, the overvoltage protection may be operated by the ASO
protection circuit, leading to the output shut down.
Note 2. The current value does not exceed this criterion because of the on–chip current limiter.
Note 3. The internal circuit shuts off the output when TJ +150°C (design value).
Recommended Operating Conditions: (IO = 500mA, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Operating Supply Voltage Range
VIN
21.5 – 29.5 V



NTE1956
Electrical Characteristics: (VIN = 25.5V, IO = 500mA, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Output Voltage
Line Regulation
Load Regulation
Input Dependency of Bias Current
Load Dependency of Bias Current
Bias Current at No Load
Bias Current Before the
Regulation Starts
VOUT
REGIN
REGLOA
DIBias(IN)
DIBias(LOA)
IBias
Irush
TJ = +25°C
VIN = 25.5V to 29.5V, TJ = +25°C
VIN = 25.5V, IO = 0 to 1200mA,
TJ = +25°C
VIN = 25.5V to 29.5V, TJ = +25°C
IO = 0 to 1200mA, TJ = +25°C
IO = 0mA
VIN = 21.6V, IO = 0mA
23.28 24.0 24.72
9.6 96
120 480
V
mV
mV
1 10 mA
10 50 mA
2.6 5.0 mA
3 5 mA
Minimum I/O Voltage Difference
Peak Output Current
Ripple Rejection Ratio
VDIF(min)
IO(Peak)
RR
VIN = 21.6V,
TJ = +25°C
IO = 500mA
IO = 1200mA
VIN = 25.5V, TJ = +25°C, Note 4
VIN = 25.5V to 27.5V, IO = 100mA,
f= 120Hz
0.4 0.6
0.5 1.0
1.2 1.8 2.4
36 56
V
V
A
dB
Design Reference Data (Note 5)
Output ShortCircuit Current
Thermal Protection Operating
Temperature
IO(Short) VIN = 30V, TJ = +25°C, Shorted Load 10
TJ(TH) VIN = 25.5V
150
mA
°C
Output Voltage Temperature
Coefficient
a TJ = +25° to +125°C
– –40 ppm/°C
Note 4. This current exceeds PDmax because it is a parameter during abnormal (overcurrent) operation.
Note 5. The characteristice listed are theoretical values based on the IC design and are not guaranteed.
.420 (10.67)
Max
.110 (2.79)
.147
(3.75)
Dia
Max
GND
.500
(12.7)
Max
.070 (1.78) Max
VIN
.100 (2.54)
.250 (6.35)
Max
.500
(12.7)
Min
VOUT
GND







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