LP3470A

ACTIVE

Ultra-low-power active-low reset IC with programmable delay and 1% reset threshold

Product details

Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.63, 2.75, 2.93, 3.08, 3.65, 4, 4.38, 4.63 Features Manual reset capable, Negative Voltage Monitoring, Reset time delay, Undervoltage monitor only, Wide input voltage Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.0003 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 0.9 Supply voltage (max) (V) 10 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
Number of supplies monitored 1 Threshold voltage 1 (typ) (V) 2.63, 2.75, 2.93, 3.08, 3.65, 4, 4.38, 4.63 Features Manual reset capable, Negative Voltage Monitoring, Reset time delay, Undervoltage monitor only, Wide input voltage Reset threshold accuracy (%) 1.5 Iq (typ) (mA) 0.0003 Output driver type/reset output Active-low, Open-drain Supply voltage (min) (V) 0.9 Supply voltage (max) (V) 10 Rating Catalog Watchdog timer WDI (s) None Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Pin-to-pin compatible with LP3470
  • 5-Pin SOT-23 package
  • Open-drain RESET output
  • Programmable reset time-out period using an external capacitor
  • Immune to short VCC transients
  • ±1% Reset threshold accuracy (typical)
  • Ultra-low quiescent current (0.3 µA typical)
  • RESET valid down to VCC = 0.95 V
  • Pin-to-pin compatible with LP3470
  • 5-Pin SOT-23 package
  • Open-drain RESET output
  • Programmable reset time-out period using an external capacitor
  • Immune to short VCC transients
  • ±1% Reset threshold accuracy (typical)
  • Ultra-low quiescent current (0.3 µA typical)
  • RESET valid down to VCC = 0.95 V

The LP3470A device is a micropower voltage supervisory circuit designed to monitor voltages within 1% of reset threshold overtemperature and is pin-to-pin compatible with existing TI device LP3470. The LP3470A device provides accurate, nano-power voltage monitoring with programmable delay.

The LP3470A asserts a reset signal whenever the VCC supply voltage falls below a reset threshold. The reset time-out period is adjustable using an external capacitor. Reset remains asserted for an interval (programmed by an external capacitor) after VCC has risen above the threshold voltage plus hysteresis.

For information on available reset threshold voltage options, see Mechanical, Packaging, and Orderable Information.

The LP3470A device is a micropower voltage supervisory circuit designed to monitor voltages within 1% of reset threshold overtemperature and is pin-to-pin compatible with existing TI device LP3470. The LP3470A device provides accurate, nano-power voltage monitoring with programmable delay.

The LP3470A asserts a reset signal whenever the VCC supply voltage falls below a reset threshold. The reset time-out period is adjustable using an external capacitor. Reset remains asserted for an interval (programmed by an external capacitor) after VCC has risen above the threshold voltage plus hysteresis.

For information on available reset threshold voltage options, see Mechanical, Packaging, and Orderable Information.

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Technical documentation

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Type Title Date
* Data sheet LP3470A Ultra Low Power Voltage Supervisor With Programmable Delay and 1% Reset Threshold datasheet (Rev. C) PDF | HTML 08 May 2020
Application brief Migrating Designs to LP3470A Low Iq Voltage Supervisor for Improved Power Supply (Rev. A) 16 Apr 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019

Design & development

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Simulation model

LP3470A263 Unencrypted PSPICE Model

SNVMBU0.ZIP (56 KB) - PSpice Model
Simulation model

LP3470A275 Unencrypted PSpice Model

SNVMBU1.ZIP (55 KB) - PSpice Model
Simulation model

LP3470A293 Unencrypted PSpice Model

SNVMBU2.ZIP (52 KB) - PSpice Model
Simulation model

LP3470A308 Unencrypted PSpice Model

SNVMBU3.ZIP (54 KB) - PSpice Model
Simulation model

LP3470A365 Unencrypted PSpice Model

SNVMBU4.ZIP (53 KB) - PSpice Model
Simulation model

LP3470A400 Unencrypted PSpice Model

SNVMBU5.ZIP (53 KB) - PSpice Model
Simulation model

LP3470A438 Unencrypted PSpice Model

SNVMBU6.ZIP (54 KB) - PSpice Model
Simulation model

LP3470A463 Unencrypted PSpice Model

SNVMBU7.ZIP (54 KB) - PSpice Model
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SOT-23 (DBV) 5 Ultra Librarian

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