MAX6730, MAX6731, MAX6732, MAX6733, MAX6734, MAX6735 독립적인 워치독 출력을 갖는 단일/듀얼/트리플 전압 µP 감시 회로

데이터 시트

전체 데이터 시트 (PDF, 204kB)
English

제품 설명

The MAX6730–MAX6735 single-/dual-/triple-voltage microprocessor (µP) supervisors feature a watchdog timer and manual reset capability. The MAX6730–MAX6735 offer factory-set reset thresholds for monitoring voltages from +0.9V to +5V and an adjustable reset input for monitoring voltages down to +0.63V. The combination of these features significantly improves system reliability and accuracy when compared to separate ICs or discrete components.

The active-low reset output asserts and remains asserted for the reset timeout period after all the monitored voltages exceed their respective thresholds. Multiple factory-set reset threshold combinations reduce the number of external components required. The MAX6730/MAX6731 monitor a single fixed voltage, the MAX6732/MAX6733 monitor two fixed voltages, and the MAX6734/MAX6735 monitor two fixed voltages and one adjustable voltage. All devices are offered with six minimum reset timeout periods ranging from 1.1ms to 1120ms.

The MAX6730–MAX6735 feature a watchdog timer with an independent watchdog output. The watchdog timer prevents system lockup during code execution errors. A watchdog startup delay of 54s after reset asserts allows system initialization during power-up. The watchdog operates in normal mode with a 1.68s delay after initialization. The MAX6730/MAX6732/MAX6734 provide an active-low, open-drain watchdog output. The MAX6731/MAX6733/MAX6735 provide an active-low, push-pull watchdog output.

Other features include a manual reset input (MAX6730/MAX6731/MAX6734/MAX6735) and push-pull reset output (MAX6731/MAX6733/MAX6735) or open-drain reset output (MAX6730/MAX6732/MAX6734). The MAX6730-MAX6733 are offered in a tiny SOT23-6 package. The MAX6734/MAX6735 are offered in a space-saving SOT23-8 package. All devices are fully specified over the extended -40°C to +85°C temperature range.

주요기능

애플리케이션/용도

V_CC1 (Primary Supply) Reset Threshold Voltages from +1.575V to +4.63V
V_CC2 (Secondary Supply) Reset Threshold Voltages from +0.79V to +3.08V
Adjustable RSTIN Threshold for Monitoring Voltages Down to +0.63V (MAX6734/MAX6735 Only)
Six Reset Timeout Options
Watchdog Timer with Independent Watchdog Output
- 35s (min) Initial Watchdog Startup Period
- 1.12s (min) Normal Watchdog Timeout Period
Manual Reset Input (MAX6730/MAX6731/MAX6734/MAX6735)
Guaranteed Reset Valid down to V_CC1 or V_CC2 = +0.8V
Push-Pull active-low RESET or Open-Drain active-low RESET Output
Immune to Short V_CC Transients
Low Supply Current: 14µA (typ) at +3.6V
Small 6-Pin and 8-Pin SOT23 Packages

	컴퓨터/서버
	산업용 장비
	다중전압 시스템
	휴대용 배터리로 동작하는 기기
	프린터 및 팩스
	셋톱 박스
	텔레콤/네트워킹 장비

Key Specifications: Supervisors (1 Monitored Voltage)

Part Number

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Watchdog Timeout

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

Active Low

min

@ +25°C

max

See Notes

MAX6730

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

Open Drain

1ms to 15ms

15ms to 85ms

85ms to 300ms

>1s

Extended Setup Period

Input (WDI)

Input/Output (WDI/WDO)

1s to 2s

>2s

Manual Reset

2.5

$1.31 @1k

MAX6731

Push-Pull

$1.31 @1k

모두 보기Supervisors (1 Monitored Voltage) (274)

Key Specifications: Supervisors (2 Monitored Voltages)

Part Number

Interface

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Watchdog Timeout

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

Active Low

min

@ +25°C

max

See Notes

MAX6732

Factory Fixed

0 to 1.2

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

Open Drain

1ms to 15ms

15ms to 85ms

85ms to 300ms

>1s

Extended Setup Period

Input (WDI)

Input/Output (WDI/WDO)

1s to 2s

>2s

2.5

MAX6733

Push-Pull

모두 보기Supervisors (2 Monitored Voltages) (84)

Key Specifications: Supervisors (3 Monitored Voltages)

Part Number

Interface

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Watchdog Timeout

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

Active Low

min

@ +25°C

max

See Notes

MAX6734

Factory Fixed

R/C Adjustable

0 to 1.2

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

Open Drain

1ms to 15ms

15ms to 85ms

85ms to 300ms

>1s

Extended Setup Period

Input (WDI)

Input/Output (WDI/WDO)

1s to 2s

>2s

Adjustable Reset Input

Manual Reset

2.5

$1.79 @1k

MAX6735

Push-Pull

$1.79 @1k

모두 보기Supervisors (3 Monitored Voltages) (32)

주문 정보

참고:

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*일부 패키지는 크기 편차(variation)를 가지며 이 값은 도면 상에 제시되어 있습니다. “패키지 코드/편차”는 해당 제품이 사용하고 있는 편차를 보여줍니다. 부품번호 suffix에 "+", "#", "-"는 RoHS 준수 상태를 나타냅니다. 패키지 도면에 suffix 문자는 다를 수 있습니다.

MAX6730

무료 샘플

구매

상태

패키지:	타입 핀 풋프린트
	도면 코드/편차 *

온도

RoHS/Lead-Free?
재료 분석

MAX6730UTSD2+T

구매 가능