Specification	LP3856ES-ADJ/NOPB

Control Features	Enable
Current - Output	3 A
Current - Quiescent (Iq)	4 mA
Current - Supply (Max) [Max]	10 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	TO-263-6, TO-263BA, D2PAK (5 Leads + Tab)
Protection Features	Over Temperature, Over Current, Short Circuit
PSRR [Max]	73 dB
PSRR [Min]	57 dB
Supplier Device Package	TO-263 (DDPAK-5)
Voltage - Input (Max) [Max]	7 V
Voltage - Output (Max) [Max]	6.5 V
Voltage - Output (Min/Fixed)	1.23 V
Voltage Dropout (Max) [Max]	0.6 V

LP3856-ADJ Series

3-A, 7-V, adjustable ultra-low-dropout voltage regulator with enable

Part	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Min/Fixed)	PSRR [Max]	PSRR [Min]	Voltage Dropout (Max) [Max]	Mounting Type	Package / Case	Output Type	Current - Supply (Max) [Max]	Protection Features	Control Features	Number of Regulators	Supplier Device Package	Voltage - Input (Max) [Max]	Current - Output	Output Configuration	Current - Quiescent (Iq)	Voltage - Output (Max) [Max]	Output Type
Texas Instruments LP3856ESX-1.8/NOPB	125 °C	-40 °C	1.8 V	73 dB	57 dB	0.6 V	Surface Mount	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm	10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-263 (DDPAK-5)	7 V	3 A	Positive	4 mA
Texas Instruments LP3856ET-5.0	125 °C	-40 °C	5 V	73 dB	57 dB	0.6 V	Through Hole	TO-220-5 Formed Leads	1.81 mOhm	10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-220-5	7 V	3 A	Positive	4 mA
Texas Instruments LP3856ET-5.0/NOPB	125 °C	-40 °C	5 V	73 dB	57 dB	0.6 V	Through Hole	TO-220-5 Formed Leads	1.81 mOhm	10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-220-5	7 V	3 A	Positive	4 mA
Texas Instruments LP3856ES-5.0	125 °C	-40 °C	5 V	73 dB	57 dB	0.6 V	Surface Mount	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm	10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-263 (DDPAK-5)	7 V	3 A	Positive	4 mA
Texas Instruments LP3856ET-3.3/NOPB	125 °C	-40 °C	3.3 V	73 dB	57 dB	0.6 V	Through Hole	TO-220-5 Formed Leads	1.81 mOhm	10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-220-5	7 V	3 A	Positive	4 mA
Texas Instruments LP3856ESX-2.5	125 °C	-40 °C	2.5 V	73 dB	57 dB	0.6 V	Surface Mount	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm	10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-263 (DDPAK-5)	7 V	3 A	Positive	4 mA
Texas Instruments LP3856ES-ADJ/NOPB	125 °C	-40 °C	1.23 V	73 dB	57 dB	0.6 V	Surface Mount	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA		10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-263 (DDPAK-5)	7 V	3 A	Positive	4 mA	6.5 V	Adjustable
Texas Instruments LP3856ESX-3.3	125 °C	-40 °C	3.3 V	73 dB	57 dB	0.6 V	Surface Mount	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	1.81 mOhm	10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-263 (DDPAK-5)	7 V	3 A	Positive	4 mA
Texas Instruments LP3856ET-1.8/NOPB	125 °C	-40 °C	1.8 V	73 dB	57 dB	0.6 V	Through Hole	TO-220-5 Formed Leads	1.81 mOhm	10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-220-5	7 V	3 A	Positive	4 mA
Texas Instruments LP3856ET-ADJ/NOPB	125 °C	-40 °C	1.23 V	73 dB	57 dB	0.6 V	Through Hole	TO-220-5 Formed Leads		10 mA	Over Current Over Temperature Short Circuit	Enable	1	TO-220-5	7 V	3 A	Positive	4 mA	6.5 V	Adjustable

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 8.88
		10	$ 8.03
		45	$ 7.65
		135	$ 6.64
		270	$ 6.35
		540	$ 5.79
		1035	$ 5.04
Newark	Each	1	$ 10.70
		10	$ 10.21
		25	$ 9.90
		90	$ 9.38
		135	$ 9.05
		270	$ 8.67
		540	$ 8.52
Texas Instruments	TUBE	1	$ 6.80
		100	$ 5.54
		250	$ 4.36
		1000	$ 3.70

Description

General part information

LP3856-ADJ Series

The LP3856-ADJ fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. The LP3856-ADJ is developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3856-ADJ to operate under extremely low dropout conditions.

Dropout Voltage:Ultra low dropout voltage; typically 39mV at 300mA load current and 390mV at 3A load current.

Ground Pin Current:Typically 4mA at 3A load current.

Documents

Technical documentation and resources

LP3856-ADJ 3A Fast Response Ultra Low Dropout Linear Regulators datasheet (Rev. E)

Data sheet