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Rohm Semiconductor Electronic Components Datasheet

BD71837MWV Datasheet

Power Management

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Datasheet
Power Management Integrated Circuit
BD71837MWV
General Description
BD71837MWV is a programmable Power Management
IC (PMIC) for powering single-core, dual-core, and
quad-core SoCs such as NXP-i.MX 8M. It is optimized
for low BOM cost and compact solution footprint. It
integrates 8 Buck regulators and 7 LDOs to provide all
the power rails required by the SoC and the commonly
used peripherals.
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.
Key Specifications
Input Voltage Range (VSYS):
SNVS State Current:
SUSPEND State Current:
IDLE State Current:
RUN State Current:
Operating Temperature Range:
2.7 V to 5.5 V
30 μA(Typ)
137 μA(Typ)
167 μA(Typ)
197 μA(Typ)
-40°C to +85°C
Applications
Streaming Media Boxes and Dongles
AV Receivers and Wireless Sound Bars
Industrial HMI, SBC, IPC and Panel Computer
Features
8 Buck Regulators
2.0 MHz Switching Frequency.
(BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK7,
and BUCK8).
1.5MHz Switching Frequency. (BUCK6)
Target Efficiency: 83% to 95%.
Output Current & Voltage.
BUCK1: 3.6 A, 0.7 V to 1.3 V/10 mV step, DVS
BUCK2: 4.0 A, 0.7 V to 1.3 V/10 mV step, DVS
BUCK3: 2.1 A, 0.7 V to 1.3 V/10 mV step, DVS
BUCK4: 1.0 A, 0.7 V to 1.3 V/10 mV step, DVS
BUCK5: 2.5 A, 0.70 V to 1.35 V/8steps
BUCK6: 3.0 A, 3.0 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
7ch Linear Regulators(7 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, 1.8 V to 3.3 V
LDO6: 300 mA, 0.9 V to 1.8 V
LDO7: 150 mA, 1.8 V to 3.3 V
Power Mux Switch
1.8V Input: 200 mΩ(Max)
3.3V Input: 280 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
Package
UQFN68CV8080
W(Typ) x D(Typ) x H(Max)
8.00mm x 8.00mm x 1.00mm
Product structure : Silicon monolithic integrated circuit. This product has no designed protection against radioactive rays
www.rohm.com
© 2018 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
1/127
TSZ02201-0Q1Q0A500480-1-2
05.Feb.2019 Rev.002


Rohm Semiconductor Electronic Components Datasheet

BD71837MWV Datasheet

Power Management

No Preview Available !

BD71837MWV
Contents
1. Introduction.....................................................................................................................................................................7
1.1. Terminology ............................................................................................................................................................7
1.2. System Power Map & Typical Application Circuit ......................................................................................................8
1.3. Pin Configuration .................................................................................................................................................. 10
1.4. Pin Description...................................................................................................................................................... 11
1.5. I/O Equivalence Circuit .......................................................................................................................................... 12
1.6. Power Rail ............................................................................................................................................................ 14
1.7. Register Map ........................................................................................................................................................ 15
1.8. ESD...................................................................................................................................................................... 17
2. Operating Conditions .................................................................................................................................................... 18
2.1. Absolute Maximum Ratings (Ta=25 ˚C).................................................................................................................. 18
2.2. Thermal Resistance .............................................................................................................................................. 18
2.3. Recommended Operating Conditions .................................................................................................................... 19
2.4. Current Consumption ............................................................................................................................................ 19
2.5. Power Reference and Detectors (UVLO)................................................................................................................ 20
3. Power State Control ...................................................................................................................................................... 21
3.1. Power Control Signals........................................................................................................................................... 21
3.1.1. PWRON_B ................................................................................................................................................... 22
3.1.2. PMIC_ON_REQ............................................................................................................................................ 22
3.1.3. PMIC_STBY_REQ........................................................................................................................................ 22
3.1.4. WDOG_B ..................................................................................................................................................... 22
3.1.5. RTC_RESET_B ............................................................................................................................................ 23
3.1.6. POR_B......................................................................................................................................................... 23
3.2. Power States ........................................................................................................................................................ 24
3.2.1. Power State Diagram .................................................................................................................................... 24
3.2.2. Power State Register .................................................................................................................................... 25
3.2.3. Power State Definition................................................................................................................................... 27
3.2.4. Power State Control Events........................................................................................................................... 28
3.2.4.1.
Reset Event .......................................................................................................................................... 28
3.2.4.2.
Emergency Shutdown Event.................................................................................................................. 30
3.2.5. Power State Transitions................................................................................................................................. 30
3.2.5.1.
OFF to READY ..................................................................................................................................... 30
3.2.5.2.
READY to SNVS................................................................................................................................... 31
3.2.5.3.
SNVS to RUN ....................................................................................................................................... 34
3.2.5.4.
RUN to IDLE......................................................................................................................................... 36
3.2.5.5.
IDLE to RUN......................................................................................................................................... 36
3.2.5.6.
RUN to SUSPEND ................................................................................................................................ 36
3.2.5.7.
SUSPEND to RUN ................................................................................................................................ 36
3.2.5.8.
IDLE to SUSPEND................................................................................................................................ 37
3.2.5.9.
Emergency Shutdown ........................................................................................................................... 37
3.2.5.10. VR Fault ............................................................................................................................................... 38
3.2.5.11. EMG to OFF ......................................................................................................................................... 42
3.2.5.12. EMG to READY .................................................................................................................................... 43
3.2.5.13. EMG_STAY Condition ........................................................................................................................... 44
3.2.5.14. Warm Reset.......................................................................................................................................... 44
3.2.5.15. PWROFF.............................................................................................................................................. 45
3.2.5.16. PWROFF to READY ............................................................................................................................. 47
3.2.5.17. PWROFF to SNVS................................................................................................................................ 47
3.2.5.18. PWRON_B Functionality ....................................................................................................................... 47
3.3. Power Sequence................................................................................................................................................... 49
3.3.1. Power ON Sequence..................................................................................................................................... 49
3.3.2. Power OFF Sequence................................................................................................................................... 51
3.3.3. RUN to IDLE................................................................................................................................................. 55
3.3.4. IDLE to RUN................................................................................................................................................. 56
3.3.5. RUN to SUSPEND........................................................................................................................................ 57
3.3.6. SUSPEND to RUN........................................................................................................................................ 58
3.3.7. IDLE to SUSPEND........................................................................................................................................ 59
3.3.8. Emergency Shutdown ................................................................................................................................... 60
3.3.9. Warm Reset.................................................................................................................................................. 61
3.3.10. Reset Source Indicators ................................................................................................................................ 62
4. I2C and Interrupt ........................................................................................................................................................... 63
4.1. I2C Bus Interface .................................................................................................................................................. 63
4.1.1. I2C Bus Interface Overview ........................................................................................................................... 63
4.1.2. I2C Bus Interface Electrical Characteristics .................................................................................................... 64
4.1.3. Device Addressing ........................................................................................................................................ 66
4.1.4. Write / Read Operation.................................................................................................................................. 67
4.2. Interrupt................................................................................................................................................................ 68
4.2.1. Interrupt Overview......................................................................................................................................... 68
5. Power Rails .................................................................................................................................................................. 71
www.rohm.com
© 2018 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 15 • 001
2/127
TSZ02201-0Q1Q0A500480-1-2
05.Feb.2019 Rev.002


Part Number BD71837MWV
Description Power Management
Maker ROHM
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