ISL88042

Quadruple Voltage Monitor

Product Status: Mass Production

OVERVIEW

The ISL88042 is a Quadruple voltage-monitoring supervisor combining competitive reset threshold accuracy and low power consumption. This device combines popular functions such as Power-On Reset, Undervoltage Supply Supervision, reset signaling and Manual Reset. Monitoring four different supplies in a 8 Ld 2x3 TDFN package, the ISL88042 devices can help to lower system cost, reduce board space requirements, and increase the reliability of multi-voltage systems.

Low VDD detection circuitry protects the user's system from low voltage conditions, resetting the system when VDD or any of the other monitored power supply voltages fall below their respective minimum voltage thresholds. The reset signal remains asserted until all of these voltages return to proper operating levels and stabilize.

Two of the four voltage monitors have preset thresholds for either dual 3.3V or one each for one 5V and one 3.3V supplies. Users can adjust the threshold voltages of the third and fourth voltage monitors in order to meet specific system level requirements.

KEY FEATURES

  • Quadruple Voltage Monitoring
  • Fixed-Voltage Options Allow Precise Monitoring of +5.0V and +3.3V Power Supplies
  • Two Adjustable Voltage Inputs Monitor Voltages > 0.6V
  • 95ms Nominal Reset Pulse Width
  • Manual Reset Capability
  • Reset Signals Valid Down to VDD = 1V
  • Immune to Power-Supply Transients
  • Low 22µA Maximum Supply Current at 5V
  • Pb-Free (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL88042
Basic Information
生产状态
Mass Production
电压监控器数量
4
监控器电压最小值 (V)
3
监控器电压最大值 (V)
5
VMONITOR
Ch1 3.3V or 5V Ch2 3.3V Ch3-Ch4 Adj to 0.6V Ref
复位输出类型
Active Low
手动复位
Yes
TwinPin™ MR#/RST#
No
WDT
No
可调POR超时
No
特性
Two fixed and two adj. monitors
可调Vtrip
Yes
固定Vtrip
Yes
总线/输出接口
N/A
输入电压最小值 (V)
2
输入电压最大值 (V)
5.5
资质级别
Standard
CAN 采样
YES
温度范围
-40 to +85

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