TPS3897ADRYR
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Texas Instruments TPS3897ADRYR

Manufacturer No:
TPS3897ADRYR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC SUPERVISOR 1 CHANNEL 6SON
Delivery:
Payment:
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Product Introduction

Overview

The TPS3897ADRYR from Texas Instruments is a single-channel, adjustable voltage monitor designed for monitoring supply voltages greater than 500 mV. This device is part of the TPS389x family, known for its ultra-small package and high accuracy. The TPS3897ADRYR features an adjustable threshold voltage, capacitor-adjustable delay time, and a low quiescent current, making it suitable for a variety of applications requiring precise voltage monitoring.

Key Specifications

Parameter Minimum Typical Maximum Unit
Supply Voltage Range (VCC) 1.7 - 6.5 V
Positive-Going Input Threshold Voltage (VIT+) 0.495 0.5 0.505 V
Hysteresis Voltage (Vhys) - 5 - mV
Quiescent Current (ICC) 6 - 12 µA
CT Pin Charge Current (I(CT)) 260 310 360 nA
CT Pin Comparator Threshold Voltage (V(CT)) 1.18 1.238 1.299 V
CT Pin Pulldown Resistance (R(CT)) 200 - - Ω
Low-Level Input Voltage (ENABLE pin) (VIL) 0.4 - - V
High-Level Input Voltage (ENABLE pin) (VIH) - - 1.4 V
Undervoltage Lockout (UVLO) 1.3 - 1.7 V
Low-Level Output Voltage (VOL) 0.3 - - V
High-Level Output Voltage (VOH) - - 0.8VCC V
Open-Drain Output Leakage Current (Ilkg(OD)) - - 300 nA
Temperature Range -40 - 125 °C

Key Features

  • Adjustable Threshold Voltage: Down to 500 mV with a 0.25% typical threshold accuracy over temperature.
  • Capacitor-Adjustable Delay Time: Allows for user-adjustable delay times using external capacitors.
  • Low Quiescent Current: Typical 6 µA, making it power-efficient.
  • External Enable Input: Enables or disables the output based on the ENABLE pin state.
  • Open-Drain and Push-Pull Output Options: The TPS3897ADRYR features an open-drain output that can be pulled up to 18 V independent of VCC.
  • Temperature Range: Operates from -40°C to 125°C.
  • Pin-for-Pin Compatible: Compatible with MAX6895/6/7/8 devices.

Applications

  • Voltage Monitoring: Monitors supply voltages to ensure they are above the minimum operating voltage for proper device operation.
  • Voltage Sequencing: Can be used to implement voltage rail sequencing by enabling downstream voltage rails once the monitored voltage is above the threshold.
  • Multiple Supply Monitoring: Multiple TPS3897ADRYR devices can be used to monitor multiple supply rails with a single output signal.
  • DSP, CPU, FPGA, and ASIC Systems: Ensures proper operation of these devices by monitoring their supply voltages.

Q & A

  1. What is the supply voltage range for the TPS3897ADRYR?

    The supply voltage range is from 1.7 V to 6.5 V.

  2. What is the typical quiescent current of the TPS3897ADRYR?

    The typical quiescent current is 6 µA.

  3. How is the delay time adjusted in the TPS3897ADRYR?

    The delay time is adjusted using an external capacitor connected to the CT pin.

  4. What are the output options for the TPS3897ADRYR?

    The device features an open-drain output that can be pulled up to 18 V independent of VCC.

  5. What is the temperature range for the TPS3897ADRYR?

    The device operates from -40°C to 125°C.

  6. Is the TPS3897ADRYR pin-for-pin compatible with other devices?

    Yes, it is pin-for-pin compatible with MAX6895/6/7/8 devices.

  7. How can multiple supply rails be monitored using the TPS3897ADRYR?

    Multiple devices can be used to monitor multiple supply rails with a single output signal using wired-OR logic.

  8. What is the purpose of the ENABLE pin on the TPS3897ADRYR?

    The ENABLE pin is used to enable or disable the output based on its state.

  9. What is the hysteresis voltage for the TPS3897ADRYR?

    The hysteresis voltage is 5 mV.

  10. How does the TPS3897ADRYR handle undervoltage lockout?

    The device deasserts the output when VCC falls below the UVLO threshold of 1.3 V to 1.7 V.

Product Attributes

Type:Simple Reset/Power-On Reset
Number of Voltages Monitored:1
Voltage - Threshold:Adjustable/Selectable
Output:Open Drain or Open Collector
Reset:Active High
Reset Timeout:Adjustable/Selectable
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Surface Mount
Package / Case:6-UFDFN
Supplier Device Package:6-SON (1.45x1)
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Similar Products

Part Number TPS3897ADRYR TPS3897PDRYR TPS3897ADRYT TPS3898ADRYR TPS3895ADRYR TPS3896ADRYR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active Active
Type Simple Reset/Power-On Reset Simple Reset/Power-On Reset Simple Reset/Power-On Reset Simple Reset/Power-On Reset Simple Reset/Power-On Reset Simple Reset/Power-On Reset
Number of Voltages Monitored 1 1 1 1 1 1
Voltage - Threshold Adjustable/Selectable Adjustable/Selectable Adjustable/Selectable Adjustable/Selectable Adjustable/Selectable Adjustable/Selectable
Output Open Drain or Open Collector Open Drain or Open Collector Open Drain or Open Collector Open Drain or Open Collector Push-Pull, Totem Pole Push-Pull, Totem Pole
Reset Active High Active High Active High Active Low Active High Active Low
Reset Timeout Adjustable/Selectable Adjustable/Selectable Adjustable/Selectable Adjustable/Selectable Adjustable/Selectable Adjustable/Selectable
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 6-UFDFN 6-UFDFN 6-UFDFN 6-UFDFN 6-UFDFN 6-UFDFN
Supplier Device Package 6-SON (1.45x1) 6-SON (1.45x1) 6-SON (1.45x1) 6-SON (1.45x1) 6-SON (1.45x1) 6-SON (1.45x1)

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