100kW

OUT

HYST

SET1

HYST

SET0

1.4V to 3.6V

V

S

GND

SOH

Temperature

Sensor

Hysteresis

Logic

Trip Point

Logic

DS

ADC

8

TMP303

SBOS486I – JULY 2009 – REVISED DECEMBER 2018

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8 Detailed Description

8.1 Overview

The TMP303 devices are temperature switches used in battery-powered applications that require accurate

monitoring of a very specific temperature range from 0°C to 60°C (TMP303A), 0°C to 55°C (TMP303B), –20°C to

60°C (TMP303C), –15°C to 125°C (TMP303D), 0°C to 70°C (TMP303E), 0°C to 80°C (TMP303F) or 0°C to 90°C

(TMP303G). This functionality is accomplished through the preset trip window and two hysteresis bits, HYSTSET0

and HYSTSET1. The preset trip window temperature thresholds are configured at the factory; for other trip points,

contact a TI representative. Table 1 summarizes the bit setting versus hysteresis temperature window.

Table 1. Bit Setting vs Hysteresis Window

HYSTSET1

HYSTSET0

HYSTERESIS

GND

GND

1°C

GND

VS

2°C

VS

GND

5°C

VS

VS

10°C

8.2 Functional Block Diagram