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
Key Specifications
- Input Voltage Range (VSYS): 2.7 V to 5.5 V
- SNVS State Current: 30 μA(Typ)
- SUSPEND State Current: 115 μA(Typ)
- IDLE State Current: 125 μA(Typ)
- RUN State Current: 125 μA(Typ)
- Operating Temperature Range:-40°C to +85°C
Applications
- Streaming Media Boxes and Dongles
- AV Receivers and Wireless Sound Bars
- Industrial HMI, SBC, IPC and Panel Computer
