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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 = +25C 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 +85C Storage Junction Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +150C Thermal Resistance, Junction-to-Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65C/W Thermal Resistance, Junction-to-Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5C/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 +150C (design value). Recommended Operating Conditions: (IO = 500mA, TA = +25C unless otherwise specified)
Parameter Operating Supply Voltage Range Symbol VIN Test Conditions Min 21.5 Typ - Max 29.5 Unit V
Electrical Characteristics: (VIN = 25.5V, IO = 500mA, TA = +25C unless otherwise specified)
Parameter 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 Minimum I/O Voltage Difference Peak Output Current Ripple Rejection Ratio Design Reference Data (Note 5) Output Short-Circuit Current Thermal Protection Operating Temperature Output Voltage Temperature Coefficient IO(Short) TJ(TH) a VIN = 30V, TJ = +25C, Shorted Load VIN = 25.5V TJ = +25 to +125C - - - 10 150 -40 - - - mA C ppm/C Symbol VOUT REGIN REGLOA DIBias(IN) IBias Irush VDIF(min) IO(Peak) RR Test Conditions TJ = +25C VIN = 25.5V to 29.5V, TJ = +25C VIN = 25.5V, IO = 0 to 1200mA, TJ = +25C VIN = 25.5V to 29.5V, TJ = +25C IO = 0mA VIN = 21.6V, IO = 0mA VIN = 21.6V, TJ = +25C IO = 500mA IO = 1200mA Min 23.28 - - - - - - - - 1.2 36 Typ 24.0 9.6 120 1 10 2.6 3 0.4 0.5 1.8 56 Max 24.72 96 480 10 50 5.0 5 0.6 1.0 2.4 - Unit V mV mV mA mA mA mA V V A dB
DIBias(LOA) IO = 0 to 1200mA, TJ = +25C
VIN = 25.5V, TJ = +25C, Note 4 VIN = 25.5V to 27.5V, IO = 100mA, f= 120Hz
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)
GND .147 (3.75) Dia Max .500 (12.7) Max
.250 (6.35) Max .500 (12.7) Min .070 (1.78) Max
VIN .100 (2.54)
VOUT GND

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