LP38843S-1.5

Obsolete

Texas Instruments

IC REG LIN 1.5V 3A DDPAK/TO263-5

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LP38843S-1.5

Obsolete

Texas Instruments

IC REG LIN 1.5V 3A DDPAK/TO263-5

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Description Specifications Series Pricing CAD Documents

Description

General part information

LP38843 Series

The LP38843 is a high-current, fast-response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low Vin voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in TO-220 and DDPAK/TO-263 packages.

Dropout Voltage:210 mV (typ) at 3A load current.

Technical Specifications

Parameters and characteristics for this part

Specification	LP38843S-1.5

Control Features	Enable
Current - Output	3 A
Current - Quiescent (Iq)	30 µA
Current - Supply (Max)	40 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Fixed
Package Leads	5 Leads
Package Name	D2PAK, TO-263 (DDPAK-5)
Protection Features	Over Current, Short Circuit, Over Temperature
PSRR (Maximum)	80 dB
PSRR (Minimum)	65 dB
Voltage - Input (Max)	5.5 V
Voltage - Output (Min/Fixed)	1.5 V
Voltage Dropout (Max)	0.5 V

LP38843 Series

3-A, low-VIN (1.01-V), ultra-low-dropout voltage regulator with enable

Part	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Mounting Type	Package / Case	Current - Supply (Max)	Number of Regulators	Protection Features	Current - Quiescent (Iq)	Current - Output	Control Features	Output Configuration	Output Type	Voltage Dropout (Max)	Package Name	PSRR (Maximum)	PSRR (Minimum)	Operating Temperature (Max)	Operating Temperature (Min)	Package Leads
Texas Instruments LP38843T-1.2/NOPB	5.5 V	1.2 V	Through Hole	TO-220-5	40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	TO-220-5	80 dB	65 dB	125 °C	-40 °C
Texas Instruments LP38843T-1.5/NOPB	5.5 V	1.5 V	Through Hole	TO-220-5	40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	TO-220-5	80 dB	65 dB	125 °C	-40 °C
Texas Instruments LP38843S-1.2	5.5 V	1.2 V	Surface Mount		40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	D2PAK TO-263 (DDPAK-5)	80 dB	65 dB	125 °C	-40 °C	5 Leads
Texas Instruments LP38843T-0.8/NOPB	5.5 V	0.8 V	Through Hole	TO-220-5	40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	TO-220-5	80 dB	65 dB	125 °C	-40 °C
Texas Instruments LP38843SX-1.5/NOPB	5.5 V	1.5 V	Surface Mount		40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	D2PAK TO-263 (DDPAK-5)	80 dB	65 dB	125 °C	-40 °C	5 Leads
Texas Instruments LP38843S-1.2/NOPB	5.5 V	1.2 V	Surface Mount		40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	D2PAK TO-263 (DDPAK-5)	80 dB	65 dB	125 °C	-40 °C	5 Leads
Texas Instruments LP38843T-1.5	5.5 V	1.5 V	Through Hole	TO-220-5	40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	TO-220-5	80 dB	65 dB	125 °C	-40 °C
Texas Instruments LP38843T-0.8	5.5 V	0.8 V	Through Hole	TO-220-5	40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	TO-220-5	80 dB	65 dB	125 °C	-40 °C
Texas Instruments LP38843SX-1.2/NOPB	5.5 V	1.2 V	Surface Mount		40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	D2PAK TO-263 (DDPAK-5)	80 dB	65 dB	125 °C	-40 °C	5 Leads
Texas Instruments LP38843S-1.5	5.5 V	1.5 V	Surface Mount		40 mA	1	Over Current Over Temperature Short Circuit	30 µA	3 A	Enable	Positive	Fixed	0.5 V	D2PAK TO-263 (DDPAK-5)	80 dB	65 dB	125 °C	-40 °C	5 Leads

Pricing

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CAD

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