LP38853T-ADJ/NOPB

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Texas Instruments

3-A, LOW-VIN (1.04-V), ADJUSTABLE ULTRA-LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

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LP38853T-ADJ/NOPB

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Texas Instruments

3-A, LOW-VIN (1.04-V), ADJUSTABLE ULTRA-LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

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Description Specifications Series Pricing CAD Documents

Description

General part information

LP38853 Series

The LP38853 is a high-current, fast-response regulator that 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 NMOS power transistor; VINis the input voltage which supplies power to the load. The use of an external bias rail allows the device 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 NMOS 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 and microcontroller core voltages, and switch-mode power-supply post regulators. Dropout Voltage: 240 mV (typical) at 3-A load current Low Ground Pin Current: 10 mA (typical) at 3-A load currentSoft Start: Programmable soft-start time

Technical Specifications

Parameters and characteristics for this part

Specification	LP38853T-ADJ/NOPB

Control Features	Soft Start, Enable
Current - Output	3 A
Current - Quiescent (Iq)	300 µA
Current - Supply (Max)	9 mA
Mounting Type	Through Hole
Number of Regulators	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	TO-220-7 Formed Leads
Package Name	TO-220-7
Protection Features	Under Voltage Lockout (UVLO), Over Temperature, Over Current, Short Circuit
PSRR (Maximum)	80 dB
PSRR (Minimum)	70 dB
Voltage - Input (Max)	5.5 V
Voltage - Output (Max)	1.8 V
Voltage - Output (Min/Fixed)	0.8 V
Voltage Dropout (Max)	0.45 V

LP38853 Series

3-A, low-VIN (1.04-V), adjustable ultra-low-dropout voltage regulator with enable

Part	Current - Supply (Max)	PSRR (Maximum)	PSRR (Minimum)	Voltage - Input (Max)	Output Configuration	Number of Regulators	Package Name	Voltage Dropout (Max)	Current - Quiescent (Iq)	Voltage - Output (Max)	Package Leads	Protection Features	Current - Output	Operating Temperature (Max)	Operating Temperature (Min)	Mounting Type	Output Type	Control Features	Voltage - Output (Min/Fixed)	Package / Case	Package Width	Package Length	Supplied Contents	Board Type	Regulator Type	Utilized IC / Part	Contents	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Channels per IC (Single)	Channels per IC (Type)	Channels per IC (Count)	Voltage - Output
Texas Instruments LP38853S-ADJ	9 mA	80 dB	70 dB	5.5 V	Positive	1	D2PAK TO-263 (DDPAK-7)	0.45 V	300 µA	1.8 V	7 Leads	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Surface Mount	Adjustable	Enable Soft Start	0.8 V
Texas Instruments LP38853T-ADJ/NOPB	9 mA	80 dB	70 dB	5.5 V	Positive	1	TO-220-7	0.45 V	300 µA	1.8 V		Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Through Hole	Adjustable	Enable Soft Start	0.8 V	TO-220-7 Formed Leads
Texas Instruments LP38853MR-ADJ	9 mA	80 dB	70 dB	5.5 V	Positive	1	8-PowerSOIC 8-SO PowerPad	0.45 V	300 µA	1.8 V		Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Surface Mount	Adjustable	Enable Soft Start	0.8 V		3.9 mm	0.154 in
Texas Instruments LP38853SX-ADJ	9 mA	80 dB	70 dB	5.5 V	Positive	1	D2PAK TO-263 (DDPAK-7)	0.45 V	300 µA	1.8 V	7 Leads	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Surface Mount	Adjustable	Enable Soft Start	0.8 V
Texas Instruments LP38853T-ADJ	9 mA	80 dB	70 dB	5.5 V	Positive	1	TO-220-7	0.45 V	300 µA	1.8 V		Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Through Hole	Adjustable	Enable Soft Start	0.8 V	TO-220-7 Formed Leads
Texas Instruments LP38853SX-ADJ/NOPB	9 mA	80 dB	70 dB	5.5 V	Positive	1	D2PAK TO-263 (DDPAK-7)	0.45 V	300 µA	1.8 V	7 Leads	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Surface Mount	Adjustable	Enable Soft Start	0.8 V
Texas Instruments LP38853S-ADJ/NOPB	9 mA	80 dB	70 dB	5.5 V	Positive	1	D2PAK TO-263 (DDPAK-7)	0.45 V	300 µA	1.8 V	7 Leads	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Surface Mount	Adjustable	Enable Soft Start	0.8 V
Texas Instruments LP38853MRX-ADJ/NOPB	9 mA	80 dB	70 dB	5.5 V	Positive	1	8-PowerSOIC 8-SO PowerPad	0.45 V	300 µA	1.8 V		Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Surface Mount	Adjustable	Enable Soft Start	0.8 V		3.9 mm	0.154 in
Texas Instruments LP38853MR-ADJ/NOPB	9 mA	80 dB	70 dB	5.5 V	Positive	1	8-PowerSOIC 8-SO PowerPad	0.45 V	300 µA	1.8 V		Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	125 °C	-40 °C	Surface Mount	Adjustable	Enable Soft Start	0.8 V		3.9 mm	0.154 in
Texas Instruments LP38853EVAL													3 A										Board(s)	Fully Populated	Positive Adjustable	LP38853	Board	3 V	5.5 V	1	Single	1	1.2 V