MAX16999 데이터 시트보기 (PDF) - Maxim Integrated

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MAX16999

Ultra-Low Output Voltage, Low-Quiescent-Current Linear Regulator for High-Temperature Applications

Maxim Integrated 

MAX16999

Ultra-Low Output Voltage, Low-Quiescent-Current

Linear Regulator for High-Temperature Applications

General Description

The MAX16999 linear regulator operates from a 2.5V to

5.5V input voltage and delivers 100mA continuous load

current with a low quiescent current typically around

13μA. The output voltage is preset to internally trimmed

voltages in the 0.5V to 3.3V range (see the Selector

Guide). An active-low, open-drain reset output remains

low for a programmable timeout delay after the output

voltage reaches regulation. The reset timeout is pro-

grammed by an external capacitor connected to CRES.

This device also features logic-controlled shutdown, and

short-circuit and thermal-overload protection. The typical

applications are multimedia, telematics, and motor control

microcontrollers (μCs) with always-on requirements. The

MAX16999 is used as a parallel, lowquiescent supply to

power the core or interrupt section of μCs during sleep

mode. It can also be used to supply a timer or memory

during μC shutoff. The adjustable POR delay assists with

power-supply sequencing.

Applications

●● Industrial

●● SDRAM Power Supplies

●● Keep-Alive Timers

●● Handheld/Portable Devices

Typical Operating Circuit

Features

●● Preset 0.5V to 3.3V Output Voltage Range

●● Up to 100mA Output Current at TA = +125°C

●● 13μA Quiescent Current

●● Logic-Controlled Enable

●● Adjustable POR Delay Flag

●● Short to GND Protection on Reset Timer

●● Used in Parallel with High-Current Supply of Equal

Voltages

●● Thermal-Overload and Short-Circuit Protection

●● Tiny 8-Pin μMAX® Package with Exposed Pad

Ordering Information

PART*

MAX16999AUA_ _+

TEMP RANGE

-40°C to +125°C

PIN-PACKAGE

8 µMAX-EP**

*Insert the desired two-digit suffix (see the Selector Guide) into

the blanks to complete the part number. Contact the factory for

other output voltages or other package options.

+Denotes a lead(Pb)-free/RoHS-compliant package.

**EP = Exposed pad.

Selector Guide appears at end of data sheet.

Pin Configuration

INPUT

2.5V TO 5.5V

CIN

1µF

ON

OFF

IN

OUT

MAX16999

EN

CRES

RESET

EP GND

OUTPUT

0.5V TO 3.3V

COUT

4.7µF

LOGIC

SUPPLY

CCRES

15nF

TO CONTROLLER

TOP VIEW

OUT 1 +

OUT 2

CRES 3

MAX16999

RESET 4

*

µMAX

8 IN

7 IN

6 EN

5 GND

*EXPOSED PAD

μMAX is a registered trademark of Maxim Integrated Products,

Inc.

19-4114; Rev 2; 2/15

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