Rohm - BD71850 -Programmable Power Management IC (PMIC)

Rohm – BD71850 -Programmable Power Management IC (PMIC)

The BD71850MWV is a programmable Power Management IC (PMIC) for powering single-core, dual-core, and quad-core SoC’s such as NXP-i.MX 8M Nano. It is optimized for low BOM cost and compact solution footprint. It integrates 6 Buck regulators and 6 LDO’s to provide all the power rails required by the SoC and the commonly used peripherals. The ultra-small QFN package and pinout support low cost Type 3 (non-HDI) PCB. Programmable power sequencing and output voltages, flexible power state control for easier system design and supports a wide variety of processors and system implementations.

Features

6 Buck Regulators
- 2.0 MHz Switching Frequency (BUCK1, BUCK2, BUCK5, BUCK7, and BUCK8)
- 1.5MHz Switching Frequency. (BUCK6)
- Target Efficiency: 83% to 95%.
- Output Current & Voltage
  - BUCK1: 3.0 A, 0.7 V to 1.3 V/10 mV step, DVS BUCK2: 3.0 A, 0.7 V to 1.3 V/10 mV step, DVS
  - BUCK5: 3.0 A, 0.70 V to 1.35 V/8steps, DVS
  - BUCK6: 3.0 A, 2.6 V to 3.3 V/100 mV step
  - BUCK7: 1.5 A, 1.605 V to 1.995 V/8steps
  - BUCK8: 3.0 A, 0.8 V to 1.4 V/10 mV step
6ch Linear Regulators (6 LDOs)
- LDO1: 10 mA, 3.0 V to 3.3 V, 1.6 V to 1.9 V
- LDO2: 10 mA, 0.9 V, 0.8 V
- LDO3: 300 mA, 1.8 V to 3.3 V
- LDO4: 250 mA, 0.9 V to 1.8 V
- LDO5: 300 mA, 0.8 V to 3.3 V
- LDO6: 300 mA, 0.9 V to 1.8 V
Power Mux Switch
- 1.8V Input: 500 mΩ(Max)
- 3.3V Input: 500 mΩ(Max)
32.768 kHz Crystal Oscillator Driver
Power Button Detector
Protection and Monitoring: Soft Start, Power Rails Fault Detection, UVLO, OVP and TSD
OTP Configurable Power Sequencing
OTP and Software Programmable Output Voltage, Ramp rates
Hardware Signaling with SoC for Transition into or out of Low Power States
Interfaces:
- I2C: 100 kHz/400 kHz, 1 MHz
- Power-on Reset Output: POR_B, RTC_RESET_B
- Watchdog Reset Input: WDOG_B
- Power State Control:
  - PMIC_STBY_REQ, PMIC_ON_REQ, PWRON_B
  - Interrupt to SoC: IRQ_B
Type3 PCB Applicable