TPS65510

ACTIVE

Low Power Battery Backup IC with Integrated Boost Converter

Product details

Rating Catalog Operating temperature range (°C) -35 to 85 Topology Buck Iout (max) (A) 1.2 Vin (min) (V) 2.65 Vin (max) (V) 5.5 Switching frequency (max) (kHz) 750 Features Overcurrent protection, Thermal shutdown, UVLO fixed Vout (min) (V) 1.2 Vout (max) (V) 12.5 Iq (typ) (µA) 250
Rating Catalog Operating temperature range (°C) -35 to 85 Topology Buck Iout (max) (A) 1.2 Vin (min) (V) 2.65 Vin (max) (V) 5.5 Switching frequency (max) (kHz) 750 Features Overcurrent protection, Thermal shutdown, UVLO fixed Vout (min) (V) 1.2 Vout (max) (V) 12.5 Iq (typ) (µA) 250
VQFN (RGT) 16 9 mm² 3 x 3
  • Power-Path Switch to Select Main Battery or Backup Battery for Real-Time Clock (RTC)
  • Integrated Boost DC/DC Converter
    • Modulation Select by Control Pin (PWMON), Pulse Frequency Modulation (PFM) or Pulse Width Modulation (PWM)
    • Fixed Switching Frequency (PWM, 750 kHz)
    • Peak Current Mode Control (PWM)
    • Low Power Consumption (PFM)
  • Four Integrated Low Dropout (LDO) Voltage Regulators for 1.2 V/1.8 V/3.3 V
  • Two Integrated Indicators
    • CS: Monitors the Voltage Level of Main Battery (VBAT) and Output voltage level of Boost Converter (VO_BT)
    • XRESET: Monitors the Output voltage Level of 3.3V LDO (VOUT)
  • 16-Pin QFN (3mm × 3mm) Package
  • Operating Temperature –35°C to 85°C
  • Protection
    • Overcurrent Protection (OCP)
    • Overvoltage Protection (OVP)
    • Thermal Shutdown (TSD)
    • Undervoltage Lockout (UVLO)
  • APPLICATIONS
    • Digital Still Cameras
    • Portable Systems With Backup Battery

PowerPAD Is a trademark of Texas Instruments.

  • Power-Path Switch to Select Main Battery or Backup Battery for Real-Time Clock (RTC)
  • Integrated Boost DC/DC Converter
    • Modulation Select by Control Pin (PWMON), Pulse Frequency Modulation (PFM) or Pulse Width Modulation (PWM)
    • Fixed Switching Frequency (PWM, 750 kHz)
    • Peak Current Mode Control (PWM)
    • Low Power Consumption (PFM)
  • Four Integrated Low Dropout (LDO) Voltage Regulators for 1.2 V/1.8 V/3.3 V
  • Two Integrated Indicators
    • CS: Monitors the Voltage Level of Main Battery (VBAT) and Output voltage level of Boost Converter (VO_BT)
    • XRESET: Monitors the Output voltage Level of 3.3V LDO (VOUT)
  • 16-Pin QFN (3mm × 3mm) Package
  • Operating Temperature –35°C to 85°C
  • Protection
    • Overcurrent Protection (OCP)
    • Overvoltage Protection (OVP)
    • Thermal Shutdown (TSD)
    • Undervoltage Lockout (UVLO)
  • APPLICATIONS
    • Digital Still Cameras
    • Portable Systems With Backup Battery

PowerPAD Is a trademark of Texas Instruments.

The TPS65510 offers a suitable solution for power switch to select the main battery or the backup battery.

This device automatically selects the power path. It depends on the voltage level of the VO_BT pin. When the main battery is removed, the power path of the VOUT pin is automatically changed from the output of 3.3-V low droppout (LDO) voltage regulator to the backup battery.

The backup battery is charged from the power path of the VRO pin (output of 3.3-V LDO) via an external diode and resistor. The input of the LDO voltage regulator comes from the internal boost converter.

The 1.2-V output LDO and 1.8-V output LDO voltage regulators have a enable pin, V_CTRL. If these outputs are not necessary, V_CTRL should be connected to AGND to save power consumption. The self-power consumption is less than 3 µA (maximum) using the backup battery.

This device has two indicators. One is CS, which monitors the voltage level of the VBAT pin and VO_BT pin. The other is XRESET, which monitors voltage level of the VOUT pin. These indicators should be connected to CPU/DSP to reset them.

This device reduces the total solution area and extends the lifetime of the backup battery.

The TPS65510 offers a suitable solution for power switch to select the main battery or the backup battery.

This device automatically selects the power path. It depends on the voltage level of the VO_BT pin. When the main battery is removed, the power path of the VOUT pin is automatically changed from the output of 3.3-V low droppout (LDO) voltage regulator to the backup battery.

The backup battery is charged from the power path of the VRO pin (output of 3.3-V LDO) via an external diode and resistor. The input of the LDO voltage regulator comes from the internal boost converter.

The 1.2-V output LDO and 1.8-V output LDO voltage regulators have a enable pin, V_CTRL. If these outputs are not necessary, V_CTRL should be connected to AGND to save power consumption. The self-power consumption is less than 3 µA (maximum) using the backup battery.

This device has two indicators. One is CS, which monitors the voltage level of the VBAT pin and VO_BT pin. The other is XRESET, which monitors voltage level of the VOUT pin. These indicators should be connected to CPU/DSP to reset them.

This device reduces the total solution area and extends the lifetime of the backup battery.

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* Data sheet Low-Power Battery Backup IC With Integrated BOOST Converter datasheet 16 Sep 2008
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024

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