LM2940-N Series

1-A, 26-V, high-PSRR, low-dropout voltage regulator

Catalog

1-A, 26-V, high-PSRR, low-dropout voltage regulator

Part	Operating Temperature [Min]	Operating Temperature [Max]	Number of Regulators	Protection Features	Current - Output	Voltage - Output (Min/Fixed)	Supplier Device Package	Voltage Dropout (Max) [Max]	Mounting Type	Voltage - Input (Max) [Max]	Current - Supply (Max) [Max]	Output Type	Output Configuration	PSRR	Current - Quiescent (Iq)	Package / Case
Texas Instruments LM2940CS-15	0 °C	125 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	15 V	TO-263 (DDPAK-3)	0.8 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	64 dB	10 mA	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA
Texas Instruments LM2940CS-5.0/NOPB	0 °C	125 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	5 V	TO-263 (DDPAK-3)	0.8 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	64 dB	10 mA	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA
Texas Instruments LM2940C-12 MWC	-40 °C	85 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	12 V	Wafersale	1 V	Surface Mount	26 V	60 mA	1.81 mOhm	Positive		15 mA	Die
Texas Instruments LM2940IMP-5.0	-40 °C	85 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	5 V	SOT-223-4	1 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	64 dB	10 mA	TO-261-4 TO-261AA
Texas Instruments LM2940IMP-12	-40 °C	85 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	12 V	SOT-223-4	1 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	66 dB	10 mA	TO-261-4 TO-261AA
Texas Instruments LM2940IMPX-8.0/NOPB	-40 °C	85 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	8 V	SOT-223-4	1 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	66 dB	10 mA	TO-261-4 TO-261AA
Texas Instruments LM2940S-5.0	-40 °C	125 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	5 V	TO-263 (DDPAK-3)	1 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	64 dB	10 mA	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA
Texas Instruments LM2940SX-10/NOPB	-40 °C	125 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	10 V	TO-263 (DDPAK-3)	1 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	63 dB	10 mA	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA
Texas Instruments LM2940CSX-9.0/NOPB	0 °C	125 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	9 V	TO-263 (DDPAK-3)	0.8 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	64 dB	10 mA	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA
Texas Instruments LM2940S-8.0/NOPB	-40 °C	125 °C	1	Over Current Over Temperature Reverse Polarity Short Circuit	1 A	8 V	TO-263 (DDPAK-3)	1 V	Surface Mount	26 V	15 mA	1.81 mOhm	Positive	66 dB	10 mA	D2PAK (3 Leads + Tab) TO-263-4 TO-263AA

Catalog

1-A, 26-V, high-PSRR, low-dropout voltage regulator

Key Features

• Input Voltage Range = 6 V to 26 VDropout Voltage Typically 0.5 V at IOUT= 1 AOutput Current in Excess of 1 AOutput Voltage Trimmed Before AssemblyReverse Battery ProtectionInternal Short Circuit Current LimitMirror Image Insertion ProtectionP+Product Enhancement TestedInput Voltage Range = 6 V to 26 VDropout Voltage Typically 0.5 V at IOUT= 1 AOutput Current in Excess of 1 AOutput Voltage Trimmed Before AssemblyReverse Battery ProtectionInternal Short Circuit Current LimitMirror Image Insertion ProtectionP+Product Enhancement Tested

Description

The LM2940-N and LM2940C positive voltage regulators feature the ability to source 1 A of output current with a dropout voltage of typically 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN− VOUT≤ 3 V). Designed also for vehicular applications, the LM2940-N and LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940-N and LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided. The LM2940-N and LM2940C positive voltage regulators feature the ability to source 1 A of output current with a dropout voltage of typically 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN− VOUT≤ 3 V). Designed also for vehicular applications, the LM2940-N and LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940-N and LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.