LD2980ABM30TR Datasheet LD2980CM18TR, LD2980CM33TR, LD2980ABM50TR | P1-P3

This is information on a product in full production.

November 2013 DocID6280 Rev 18 1/22

LD2980

Ultra low drop voltage regulators compatible

with low ESR output capacitors

Datasheet

production data

Features

• Stable with low ESR ceramic capacitors

• Ultra low dropout voltage (0.12 V typ. at 50 mA

load, 7 mV typ. at 1 mA load)

• Very low quiescent current (80 μA typ. at no

load in on mode; max 1 μA in off mode)

• Guaranteed output current up to 50 mA

• Logic-controlled electronic shutdown

• Output voltage of 1.8; 3.0; 3.3; 5.0 V

• Internal current and thermal limit

• ± 0.5% Tolerance output voltage available (A

version)

• Output low noise voltage 160 μVRMS

• Temperature range: -40 to 125 °C

• Smallest package SOT23-5L

• Fast dynamic response to line and load

changes

Description

The low drop voltage and the ultra low quiescent

current make them suitable for low noise, low

power applications and in battery powered

systems. The quiescent current in sleep mode is

less than 1 μA when the INHIBIT pin is pulled low.

A shutdown logic control function is available on

pin n° 3 (TTL compatible). This means that when

the device is used as local regulator, it is possible

to put a part of the board in standby, decreasing

the total power consumption. The LD2980 is

designed to work with low ESR ceramic

capacitors. Typical applications are cellular

phone, laptop computer, personal digital assistant

(PDA), personal stereo, camcorder and camera.

SOT23-5L

Table 1. Device summary

Part numbers

AB version C version Output voltage

LD2980CM18TR 1.8 V

LD2980ABM30TR 3.0 V

LD2980ABM33TR LD2980CM33TR 3.3 V

LD2980ABM50TR LD2980CM50TR 5.0 V

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Contents LD2980

2/22 DocID6280 Rev 18

Contents

1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7 Application notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.1 External capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.2 Input capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.3 Output capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.4 Important . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.5 Inhibit input operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.6 Reverse current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

9 Packaging mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

DocID6280 Rev 18 3/22

LD2980 Diagram

1 Diagram

Figure 1. Schematic diagram

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P22

LD2980ABM30TR

Mfr. #:

Buy LD2980ABM30TR

Manufacturer:

STMicroelectronics

Description:

LDO Voltage Regulators 3.0V 50mA Positive

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LD2980ABM30TR

LD2980ABM30TR

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