LP38853 Series

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

Catalog

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

Part	Protection Features	Current - Output	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Current - Supply (Max) [Max]	Package / Case	Voltage - Output (Min/Fixed)	Voltage - Output (Max) [Max]	Control Features	Output Configuration	Current - Quiescent (Iq)	Voltage Dropout (Max) [Max]	Mounting Type	Supplier Device Package	Voltage - Input (Max) [Max]	PSRR [Min]	PSRR [Max]	Number of Regulators	Package / Case [y]	Package / Case [x]
Texas Instruments LP38853T-ADJ/NOPB	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	Adjustable	125 °C	-40 °C	9 mA	TO-220-7 Formed Leads	0.8 V	1.8 V	Enable Soft Start	Positive	300 µA	0.45 V	Through Hole	TO-220-7	5.5 V	70 dB	80 dB	1
Texas Instruments LP38853MR-ADJ	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	Adjustable	125 °C	-40 °C	9 mA	8-PowerSOIC	0.8 V	1.8 V	Enable Soft Start	Positive	300 µA	0.45 V	Surface Mount	8-SO PowerPad	5.5 V	70 dB	80 dB	1	3.9 mm	0.154 in
Texas Instruments LP38853SX-ADJ	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	Adjustable	125 °C	-40 °C	9 mA	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	0.8 V	1.8 V	Enable Soft Start	Positive	300 µA	0.45 V	Surface Mount	TO-263 (DDPAK-7)	5.5 V	70 dB	80 dB	1
Texas Instruments LP38853T-ADJ	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	Adjustable	125 °C	-40 °C	9 mA	TO-220-7 Formed Leads	0.8 V	1.8 V	Enable Soft Start	Positive	300 µA	0.45 V	Through Hole	TO-220-7	5.5 V	70 dB	80 dB	1
Texas Instruments LP38853SX-ADJ/NOPB	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	Adjustable	125 °C	-40 °C	9 mA	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	0.8 V	1.8 V	Enable Soft Start	Positive	300 µA	0.45 V	Surface Mount	TO-263 (DDPAK-7)	5.5 V	70 dB	80 dB	1
Texas Instruments LP38853S-ADJ/NOPB	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	Adjustable	125 °C	-40 °C	9 mA	D2PAK (7 Leads + Tab) TO-263-8 TO-263CA	0.8 V	1.8 V	Enable Soft Start	Positive	300 µA	0.45 V	Surface Mount	TO-263 (DDPAK-7)	5.5 V	70 dB	80 dB	1
Texas Instruments LP38853MR-ADJ/NOPB	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	Adjustable	125 °C	-40 °C	9 mA	8-PowerSOIC	0.8 V	1.8 V	Enable Soft Start	Positive	300 µA	0.45 V	Surface Mount	8-SO PowerPad	5.5 V	70 dB	80 dB	1	3.9 mm	0.154 in
Texas Instruments LP38853MRX-ADJ	Over Current Over Temperature Short Circuit Under Voltage Lockout (UVLO)	3 A	Adjustable	125 °C	-40 °C	9 mA	8-PowerSOIC	0.8 V	1.8 V	Enable Soft Start	Positive	300 µA	0.45 V	Surface Mount	8-SO PowerPad	5.5 V	70 dB	80 dB	1	3.9 mm	0.154 in

Catalog

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

Key Features

• Wide VBIASSupply Operating Range: 3 V to 5.5 VAdjustable VOUTRange: 0.8 V to 1.8 VDropout Voltage of 240 mV (Typical) at 3-A Load CurrentPrecision VADJAcross All Line and Load Conditions:±1.5% VADJfor TJ= 25°C±2% VADJfor 0°C ≤ TJ≤ +125°C±3% VADJfor –40°C ≤ TJ≤ +125°COvertemperature and Overcurrent ProtectionStable with 10-µF Ceramic Capacitors−40°C to +125°C Operating Junction Temperature RangeWide VBIASSupply Operating Range: 3 V to 5.5 VAdjustable VOUTRange: 0.8 V to 1.8 VDropout Voltage of 240 mV (Typical) at 3-A Load CurrentPrecision VADJAcross All Line and Load Conditions:±1.5% VADJfor TJ= 25°C±2% VADJfor 0°C ≤ TJ≤ +125°C±3% VADJfor –40°C ≤ TJ≤ +125°COvertemperature and Overcurrent ProtectionStable with 10-µF Ceramic Capacitors−40°C to +125°C Operating Junction Temperature Range

Description

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 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