High-Voltage, Micropower, Single/Dual Linear

Regulators with Supervisory Functions

10

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Pin Description

Typical Operating Characteristics (continued)

LOAD-TRANSIENT RESPONSE

MAX6791-96toc21

OUT1

AC-COUPLED

100mA/div

1mA

500mV/div

1ms/div

MAX6792

OUT1 = 5V

µF

LOAD-TRANSIENT RESPONSE

MAX6791-96toc22

OUT1

AC-COUPLED

100mA/div

20mA

500mV/div

1ms/div

MAX6792

OUT1 = 5V

µF

PIN

MAX6791/

MAX6792

MAX6793/

MAX6794

MAX6795/

MAX6796

NAME

FUNCTION

1, 2

1, 2

—

OUT1

Regulator 1 Output. Fixed (+1.8V, +2.5V, +3.3V, or +5V) or adjustable (+1.8V to

+11V). OUT1 = 150mA (max). Connect a 10µF (min) capacitor from OUT1 to GND.

33

—

SET1

Feedback Input for Setting the OUT1 Voltage. Connect SET1 to GND to select the

preset output voltage. Connect to an external resistive divider for adjustable

output operation.

44

4

PFO

Active-Low, Open-Drain, Power-Fail Comparator Output. PFO asserts low

when PFI is below the internal 1.231V threshold. PFO deasserts when PFI is

above the internal 1.231V threshold.

55

5

CSWT

Watchdog Timeout Period Adjust Input. Connect CSWT to OUT1/OUT for the

internally fixed watchdog timeout period. For adjustable watchdog timeout period,

connect a capacitor from CSWT to GND. Connect CSWT to GND to disable the

watchdog. See the Selecting Watchdog Timeout Period section for more details.

66

6

CSRT

Reset Timeout Period Adjust Input. Connect CSRT to OUT1/OUT for the

internally fixed timeout period. For adjustable timeout, connect a capacitor

from CSRT to GND. See the Reset Output section for more details.

77

7

GND

Ground

88

8

RESET

Active-Low Reset Output. RESET remains low while OUT1/OUT is below the reset

threshold. RESET remains low for the duration of the reset timeout period after the

reset conditions end. RESET is available in push-pull and open-drain options.