LP38856T-0.8/NOPB National Semiconductor, LP38856T-0.8/NOPB Datasheet

LP38856T-0.8/NOPB

Manufacturer Part Number

LP38856T-0.8/NOPB

Description

IC REG LDO 0.8V 3A TO220-5

Manufacturer

National Semiconductor

Series

PowerWise®r

Type

Voltage Regulatorr

Datasheet

1.LP38856T-0.8NOPB.pdf (5 pages)

Specifications of LP38856T-0.8/NOPB

Package / Case

TO-220-5 (Bent and Staggered Leads)

Mounting Type

Through Hole

Current - Output

Voltage - Output

0.8V

Voltage - Input

1.8 ~ 3 V

Operating Temperature

-40°C ~ 125°C

Regulator Topology

Positive Fixed

Voltage - Dropout (typical)

0.24V @ 3A

Number Of Regulators

Current, Output

3 A

Current, Supply

10 mA

Package Type

TO-220

Regulation, Line

0.04 %/V

Regulation, Load

0.2 %/A

Regulator Type

Linear, Low Dropout

Resistance, Thermal, Junction To Case

3 °C/W

Temperature, Operating, Range

-40 to +125 °C

Voltage, Dropout

240 mV

Voltage, Input

3 to 5.5 V

Voltage, Noise

150 μV

Voltage, Output

0.8 V

Voltage, Supply, Rejection Ratio

80 dB

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Limit (min)

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

Other names

*LP38856T-0.8/NOPB::LP38856T-0.8

Current page: 1 of 5
Download datasheet (206Kb)

LP38856

3A Fast-Response High-Accuracy LDO Linear Regulator

with Enable

General Description

The LP38856 is a high-current, fast-response regulator which

can maintain output voltage regulation with an extremely low

input to output voltage drop. Fabricated on a CMOS process,

the device operates from two input voltages: V

power for the internal bias and control circuits, as well as drive

for the gate of the N-MOS power transistor, while V

power to the load. The use of an external bias rail allows the

part to operate from ultra low V

ulators, the CMOS architecture consumes extremely low qui-

escent 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 LP38856 is

available in TO-220 and TO-263 5-Lead packages.

Dropout Voltage: 240 mV (typical) at 3A load current.

Low Ground Pin Current: 14 mA (typical) at 3A load current.

Shutdown Current: 1 µA (typical) I

Precision Output Voltage: ±1.0% for T

for 0°C

Typical Application Circuit

≤

+125°C, across all line and load conditions

voltages. Unlike bipolar reg-

IN(GND)

when EN pin is low.

= 25°C and ±2.0%

BIAS

provides

supplies

Features

■

Applications

■

Standard V

Wide V

Stable with 10 µF ceramic capacitors

Dropout voltage of 240 mV (typical) at 3A load current

Precision Output Voltage across all line and load

conditions:

— ±1.0% for T

— ±2.0% for 0°C

— ±3.0% for -40°C

Over-Temperature and Over-Current protection

Available in 5 lead TO-220 and TO-263 packages

Custom V

-40°C to +125°C Operating Temperature Range

ASIC Power Supplies In:

- Desktops, Notebooks, and Graphics Cards, Servers

- Gaming Set Top Boxes, Printers and Copiers

Server Core and I/O Supplies

DSP and FPGA Power Supplies

SMPS Post-Regulator

BIAS

OUT

Supply operating range of 3.0V to 5.5V

values between 0.8V and 1.2V are available

values of 0.8V and 1.2V

= 25°C

≤

+125°C

20131101

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LP38856T-0.8/NOPB Summary of contents

Page 1

LP38856 3A Fast-Response High-Accuracy LDO Linear Regulator with Enable General Description The LP38856 is a high-current, fast-response regulator which can maintain output voltage regulation with an extremely low input to output voltage drop. Fabricated on a CMOS process, the device ...

Page 2

... Ordering Information V * Order Number OUT LP38856S-0.8 0.8V LP38856SX-0.8 LP38856T-0.8 LP38856S-1.2 1.2V LP38856SX-1.2 LP38856T-1.2 * For custom V values between 0.8V and 1.2V please contact the National Semiconductor Sales Office. OUT Connection Diagrams TO-263, Top View Pin Descriptions Pin # Pin Symbol GND 4 OUT 5 BIAS ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Lead Temperature Soldering, 5 seconds ESD Rating Human Body Model (Note 2) Power Dissipation (Note 3) V Supply Voltage (Survival Supply Voltage (Survival) ...

Page 4

Symbol Parameter ENABLE Pin I ENABLE pin Current EN V Enable Voltage Threshold EN(ON) V Enable Voltage Hysteresis EN(HYS) t Turn-OFF Delay Time OFF t Turn-ON Delay Time ON AC Parameters PSRR Ripple Rejection for Voltage ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted TO220 5-lead, Molded, Stagger Bend Package (TO220-5) TO263 5-Lead, Molded, Surface Mount Package (TO263-5) NS Package Number T05D NS Package Number TS5B 12 ...

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