电压监督,3 引脚,为处理器,极低电源电流,重置监控

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概览

MAX809/NCV809 和 MAX810 是一款成本高效的系统监督电路,用于监控数字系统中的 VCC,必要时为宿主处理器提供重置信号。无需外部组件。重置输出通过重置电压阈值,在 VCC 下降 10 µsec 内驱动为有效。重置将在 VCC 上升至重置阈值以上之后一个超时时段内保持有效,该时段由工厂进行微调。MAX810 是有效高电平 RESET 输出,而 MAX809 为有效低电平 RESETbar 输出。两个器件均采用 SOT-23 和 SC-70 封装。MAX809/810 适用于抑制 VCCline 上的快速瞬变故障。0.5 µA (VCC = 3.3 V) 的低电源电流使得这些器件适用于电池供电应用。

  • Computers
  • Embedded Systems
  • Battery Powered Equipment
  • Critical Microprocessor Power Supply Monitoring
  • Body Electronic
  • Braking
  • Infotainment
  • Instrument Cluster
  • Nagivator
  • Occupant Comfort
  • Occupant Protection
  • Powertrain

  • Precision VCC Monitor for 1.5 V, 1.8V, 2.5 V, 3.0 V, 3.3 V and 5.0 V supplies
  • Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps
  • Four Guaranteed Minimum RESET Output Duration
    (1ms, 20ms, 100ms and 140ms)
  • RESET Output Guaranteed to VCC = 1.0 V
  • Low 1.0 µA Supply Current
  • VCC Transient Immunity
  • Small SOT-23 and SC-70 Package
  • No External Components
  • Wide Operating Temperature: -40°C to 105°C
  • NCV Version for Automotive

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CAD Models

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Voltages Monitored

VCC Max (V)

V(TO) Typ (V)

IQ Typ (µA)

Reset Active State

Reset Timer

Manual Reset

Watchdog Timer

Reference Price

NCV809SN293D2T1G

Active

CAD Model

Pb

A

H

P

SOT-23 (TO-236) 2.90x1.30x1.00, 1.90P

1

260

REEL

3000

Y

1

5.5

2.93

0.5

Low

Yes

No

No

$0.1359

More Details

NCV809STRG

Last Shipments

CAD Model

Pb

A

H

P

SOT-23 (TO-236) 2.90x1.30x1.00, 1.90P

1

260

REEL

3000

N

1

5.5

2.93

0.5

Low

Yes

No

No

Price N/A

More Details

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