LP38859 Series

3-A, low-VIN (1.15-V), high-accuracy, ultra-low-dropout voltage regulator

Catalog

3-A, low-VIN (1.15-V), high-accuracy, ultra-low-dropout voltage regulator

Part	Current - Quiescent (Iq)	Package Name	Protection Features	Control Features	Number of Regulators	Voltage Dropout (Max)	Package Leads	Current - Output	Current - Supply (Max)	Mounting Type	Operating Temperature (Max)	Operating Temperature (Min)	PSRR (Maximum)	PSRR (Minimum)	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Output Configuration	Output Type	Package / Case	Supplied Contents	Board Type	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Voltage - Output	Regulator Type	Utilized IC / Part	Channels per IC (Single)	Channels per IC (Type)	Channels per IC (Count)	Contents
Texas Instruments LP38859S-1.2	8.5 mA	D2PAK TO-263 (DDPAK-5)	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V	5 Leads	3 A	15 mA	Surface Mount	125 °C	-40 °C	80 dB	65 dB	5.5 V	1.2 V	Positive	Fixed
Texas Instruments LP38859T-1.2/NOPB	8.5 mA	TO-220-5	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V		3 A	15 mA	Through Hole	125 °C	-40 °C	80 dB	65 dB	5.5 V	1.2 V	Positive	Fixed	TO-220-5 Formed Leads
Texas Instruments LP38859SX-1.2/NOPB	8.5 mA	D2PAK TO-263 (DDPAK-5)	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V	5 Leads	3 A	15 mA	Surface Mount	125 °C	-40 °C	80 dB	65 dB	5.5 V	1.2 V	Positive	Fixed
Texas Instruments LP38859SX-1.2/NOPB	8.5 mA	D2PAK TO-263 (DDPAK-5)	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V	5 Leads	3 A	15 mA	Surface Mount	125 °C	-40 °C	80 dB	65 dB	5.5 V	1.2 V	Positive	Fixed
Texas Instruments LP38859S-1.2/NOPB	8.5 mA	D2PAK TO-263 (DDPAK-5)	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V	5 Leads	3 A	15 mA	Surface Mount	125 °C	-40 °C	80 dB	65 dB	5.5 V	1.2 V	Positive	Fixed
Texas Instruments LP38859T-0.8	8.5 mA	TO-220-5	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V		3 A	15 mA	Through Hole	125 °C	-40 °C	80 dB	65 dB	5.5 V	0.8 V	Positive	Fixed	TO-220-5 Formed Leads
Texas Instruments LP38859SX-1.2	8.5 mA	D2PAK TO-263 (DDPAK-5)	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V	5 Leads	3 A	15 mA	Surface Mount	125 °C	-40 °C	80 dB	65 dB	5.5 V	1.2 V	Positive	Fixed
Texas Instruments LP38859T-0.8/NOPB	8.5 mA	TO-220-5	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V		3 A	15 mA	Through Hole	125 °C	-40 °C	80 dB	65 dB	5.5 V	0.8 V	Positive	Fixed	TO-220-5 Formed Leads
Texas Instruments LP38859T-1.2	8.5 mA	TO-220-5	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	Soft Start	1	0.45 V		3 A	15 mA	Through Hole	125 °C	-40 °C	80 dB	65 dB	5.5 V	1.2 V	Positive	Fixed	TO-220-5 Formed Leads
Texas Instruments LP38859-1.2EVAL								3 A												Board(s)	Fully Populated	3 V	5.5 V	1.2 V	Positive Fixed	LP38859	1	Single	1	Board

Catalog

3-A, low-VIN (1.15-V), high-accuracy, ultra-low-dropout voltage regulator

Description

The LP38859 is a high-current, fast-response regulator which can maintain output voltage regulation with extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIASprovides voltage to drive the gate of the N-MOS power transistor, while VINis the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra-low VINvoltages. 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 this device makes it suitable for use in powering DSP microcontroller core voltages and switch-mode power-supply post-regulators. The LP38859 is available in 5-pin TO-220 and DDPAK/TO-263 packages. The LP38859 is a high-current, fast-response regulator which can maintain output voltage regulation with extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIASprovides voltage to drive the gate of the N-MOS power transistor, while VINis the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra-low VINvoltages. 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 this device makes it suitable for use in powering DSP microcontroller core voltages and switch-mode power-supply post-regulators. The LP38859 is available in 5-pin TO-220 and DDPAK/TO-263 packages.