8 Detailed Description

8.1 Overview

The TLV841 is a family of very small, accurate, nano-quiescent current voltage supervisors with fixed threshold

voltages. TLV841S features a separate SENSE pin for adjustable voltage threshold without losing accuracy,

TLV841C features a programable reset time delay using external capacitor, and TLV841M features an active-low

manual reset (MR). The TLV841 family provide ±0.5% typical monitor threshold accuracy with hysteresis and

glitch immunity.

The adjustable variant of TLV841S has an internal reference voltage of 0.505 V and can be used to accurately

monitor any voltage above 0.505 V within the recommended operating conditions. In addition to the adjustable

(see Table 12-2 for available options). TLV841 is available in a very small (0.73 mm x 0.73 mm) 4-pin BGA

package.

8.2 Functional Block Diagram

+

–

Reference

GND

SENSE

(TLV841S)

GND

VDD

RESET

LOGIC

TIMER

CT

(TLV841C)

Push-pull

(TLV841xxPx)

MR

(TLV841M)

VDD

VDD

(TLV841M,

TLV841C)

VDD

Fixed

ADJ

TLV841S

VDD

8.3 Feature Description

8.3.1 Input Voltage (VDD)

For TLV841C and TLV841M, the VDD pin is monitored by the internal comparator to indicate when VDD falls

below the fixed threshold voltage. For TLV841S, the SENSE pin is monitored by the internal comparator. VDD

also functions as the supply for the internal bandgap, internal regulator, state machine, buffers and other control

logic blocks. Good design practice involve placing a 0.1 μF to 1 μF bypass capacitor at VDD input for noisy

applications to ensure enough charge is available for the device to power up correctly.

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TLV841

SLVSFO5C – APRIL 2020 – REVISED JULY 2021

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