System PMIC for Battery Powered Systems - BD71815AGW (New)

BD71815AGW is a single-chip power management IC for battery-powered portable devices. The IC integrates 5 buck converters, 8 LDOs, a boost driver for LED, and a 500mA single-cell linear charger. Also included is a Coulomb counter, a real-time clock (RTC), a 32 kHz crystal oscillator and a general-purpose output (GPO).
The IC’s buck converters supply power to the application processor as well as system peripherals such as DDR memory, wireless modules, and touch controllers. These regulators maintain high efficiency over a wide range of current loads by supporting both PFM and PWM modes. They also operate at a high switching frequency of 6MHz, which allows the use of smaller and cheaper inductors and capacitors. The regulator supplying the processor core also supports Dynamic Voltage Scaling (DVS).

Data Sheet

Support Documents
Layout & Schematic Data

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
BD71815AGW-E2 Active UCSP55M4C 2500 2500 Taping Yes
Vin1(Min.)[V] 3.5
Vin1(Max.)[V] 28.0
Channel(DCDC)[ch] 5
Channel(LDO)[ch] 8
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
    • 5 buck converters:
    • 3 general-purpose LDOs
    • LDO for DDR Reference Voltage (DVREF)
    • LDO for Secure Non-Volatile Storage (SNVS)
    • LDO for Low-Power State Retention (LPSR)
    • LDO for SD Card with dedicated enable terminal
    • LDO for SD Card Interface with dedicated terminal
      to dynamically change output voltage
    • White LED Boost Converter
    • Single-cell Linear LIB Charger with 30V OVP
    • Voltage Measurement for Thermistor
    • Embedded Coulomb Counter for Battery Fuel Gauging
    • Battery Monitoring and Alarm Output
    • Real Time Clock with 32.768kHz crystal oscillator
    • 1 GPO Open Drain or CMOS Output Selectable)
    • Power Control I/O
    • 1 LED Indicator
    • I2C interface
ROHM Semiconductor reserves the right to change the specifications at any time.
Technical Data
Application Note

Thermal Resistance