200mA, Automotive, Ultra-Low

Quiescent Current, Linear Regulator

10 _____________________________________________________________________________________

Pin Description

Typical Operating Characteristics (continued)

ENABLE STARTUP RESPONSE

MAX16910 toc21

5V

0A

0V

3.3V

40Fs/div

ENABLE STARTUP RESPONSE

MAX16910 toc22

5V

0A

0V

0V

3.3V

175mA

40Fs/div

LOAD-DUMP TRANSIENT RESPONSE

MAX16910 toc23

14V

42V

100ms/div

(AC-COUPLED)

100mV/div

PIN

NAME

FUNCTION

1

IN

Regulator Input. Bypass IN to GND with a 1FF (min) low-ESR ceramic capacitor.

2

ENABLE

Active-High Enable Input. Force ENABLE high (or connect to IN) to turn the regulator on. Pull

ENABLE low (or leave unconnected) to place the device in a low-power shutdown mode. ENABLE

is internally pulled down to GND through a 0.65FA current sink.

3

SET

Feedback Network Selector. Connect SET to GND when operating the MAX16910 in fixed output-

voltage mode (3.3V or 5V) using the internal feedback network. Connect SET to IN or any voltage

higher than 2.4V when an external feedback network (resistive divider) is used, operating the

MAX16910 in adjustable output-voltage mode.

4

RESET

Active-Low, Open-Drain Reset Output. RESET asserts low when OUT is below the reset threshold,

and remains low for the duration of the reset timeout period after the reset conditions end. RESET

also asserts low when ENABLE is low and during thermal shutdown.

5

TIMEOUT

Reset-Timeout-Period Adjust Input. Internal capacitance produces a 60Fs default delay when

TIMEOUT is left unconnected. Connect a capacitor from TIMEOUT to GND to set a longer timeout

period than default.

6

SETOV

Regulated Output-Voltage Selector. Connect SETOV to OUT for a 5V fixed output, or connect

SETOV to GND for a 3.3V fixed output. SETOV becomes the feedback path when using an exter-

nal resistive divider for an adjustable output.

7

GND

Ground

8

OUT

Regulator Output. Bypass OUT to GND with a minimum of 4.7FF. Use a low-ESR, ceramic capaci-

tor (X7R, X5R) for optimal performance. The SETOV input controls the output voltage when in fixed

+3.3V or fixed +5V output-voltage mode. Using an external resistive divider between OUT and

SETOV sets adjustable output voltage from +1.5V to +11V.

—

EP

Exposed Pad. EP is internally connected to GND. Connect EP to the ground plane to provide a

low thermal-resistance path from the thermal junction to the PCB. Do not use EP as the only elec-

trical connection to GND.