2

GND

3

4

RESET

MR

1

5

RESET

V

DD

2

GND

3

4

MR

WDI

1

5

RESET

V

DD

2

GND

3

4

RESET

WDI

1

5

RESET

V

DD

TPS3820-33-Q1, TPS3820-50-Q1, TPS3823-25-Q1

TPS3823-30-Q1, TPS3823-33-Q1, TPS3823-50-Q1, TPS3824-30-Q1, TPS3824-33-Q1

TPS3824-50-Q1, TPS3825-33-Q1, TPS3825-50-Q1, TPS3828-33-Q1, TPS3828-50-Q1

www.ti.com

SGLS143C – DECEMBER 2002 – REVISED DECEMBER 2015

5 Device Comparison Table

FIXED DELAY

DEVICE

RESET

RESET

WDI

MR

TIME

TPS3820-xx-Q1

Push-pull

X

X

25 ms

TPS3823-xx-Q1

Push-pull

X

X

200 ms

TPS3824-xx-Q1

Push-pull

X

200 ms

TPS3825-xx-Q1

Push-pull

Push-pull

X

200 ms

TPS3828-xx-Q1

Open-drain

X

X

200 ms

6 Pin Configuration and Functions

TPS3820-xx-Q1, TPS3823-xx-Q1, TPS3828-xx-Q1: DBV

TPS3824-xx-Q1: DBV PACKAGE

PACKAGE

5-Pin SOT-23

5-Pin SOT-23

Top View

Top View

TPS3825-xx-Q1: DBV PACKAGE

5-Pin SOT-23

Top View

Pin Functions

PIN

TPS3820

‑‑xx‑‑Q1,

I/O

DESCRIPTION

NAME

TPS3823

‑‑xx‑‑Q1,

TPS3824

‑‑xx‑‑Q1 TPS3825‑‑xx‑‑Q1

TPS3828

‑‑xx‑‑Q1

GND

2

2

2

—

Ground connection

Manual-reset input. Pull low to force a reset. RESET

remains low as long as MR is low and for the time-out

MR

3

—

4

I

period after MR goes high. Leave unconnected or

Active-high reset output. Either push-pull or open-drain

RESET

—

3

3

O

output stage.

Active-low reset output. Either push-pull or open-drain

RESET

1

1

1

O

output stage.

Supply voltage. Powers the device and monitors its own

5

5

5

I

voltage.

Watchdog timer input. If WDI remains high or low longer

than the time-out period, then reset is triggered. The

timer clears when reset is asserted or when WDI sees a

WDI

4

4

—

I

rising edge or a falling edge. If unused, the WDI

connection must be high impedance to prevent it from

causing a reset event.

Copyright © 2002–2015, Texas Instruments Incorporated

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Product Folder Links: TPS3820-33-Q1 TPS3820-50-Q1 TPS3823-25-Q1 TPS3823-30-Q1 TPS3823-33-Q1 TPS3823-

50-Q1 TPS3824-30-Q1 TPS3824-33-Q1 TPS3824-50-Q1 TPS3825-33-Q1 TPS3825-50-Q1 TPS3828-33-Q1

TPS3828-50-Q1