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BD71805MWV-E2 Datasheet(PDF) 1 Page - Rohm |
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BD71805MWV-E2 Datasheet(HTML) 1 Page - Rohm |
1 / 100 page ○Product structure:Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays . 1/96 TSZ02201-0Q4Q0AB00050-1-2 © 2015 ROHM Co., Ltd. All rights reserved. 27.Feb.2015 Rev.001 TSZ22111 ・14・001 www.rohm.com System PMIC for Battery Powered Systems BD71805MWV General Description The BD71805MWV is a single chip power management IC for battery-powered portable devices. It integrates 4 Bucks, 3 LDOs, 2A single-cell linear charger, OVP, Coulomb counter, RTC, 32 kHz crystal circuitry and 3 GPOs. Four highly efficient 2.5MHz step-down converters supply power to the application processor as well as system peripherals such as DDR memory, wireless modules, and touch controller. The regulator to the processor core supports DVS. The regulators maintain high efficiency over a wide range of current loads by supporting both PFM and PWM modes. High switching frequency allows the use of smaller and cheaper inductors and capacitors. Features 4 Buck Converters: - 1-2000mA Buck - 3-1000mA Bucks 3 LDOs (General purpose) - 3-300mA LDOs LDO for DDR Reference Voltage LDO for Secure Non-Volatile Storage (SNVS) Single-cell Linear LIB Charger with 30V-OVP - Selectable Charging Voltage : 3.72 to 4.34 V - Programmable Charge Current : 100 to 2000mA - DCIN Over Voltage Protection - Battery Over Voltage Protection - Support Battery Supplement Mode - Battery Short Circuit Detection Voltage Measurement for Thermistor - Bias Voltage Output for External Thermistor Embedded Coulomb Counter for Battery Fuel Gauging - 15- bit ΔΣ-ADC with External Current Sense Resistor (10 mΩ, ±1%) - 1-sec cycle, 28-bit Accumulation - Coulomb Count while Charging/Discharging Battery Monitoring and Alarm Output - Under Voltage Alarm while Discharging - Over Discharge Current Alarm - Over/Under Temperature Alarm - Programmable Thresholds and Time Durations - Automatic Low Voltage Mode (Battery Protection) 3.5V Detection : Interrupt to Processor to Ask User Plug-in 3.3V Detection : Interrupt to Processor to Indicate Battery Critically Low Condition Real Time Clock with 32.768kHz Crystal Oscillator - 32.768kHz Clock Output (Open Drain or CMOS Output Selectable) 3 GPOs (Open Drain or CMOS Output Selectable) Power Control I/O - Power On/Off Control Input - Standby Input for Switching ON / STANDBY Mode - Reset Input to Reset Hung PMIC - Power On Reset Output I2C Interface Applications E-Book Reader Portable Media Players Portable Navigation Devices Key Specifications Input Voltage Range (DCIN): 3.5V to 28V Input Voltage Range (VIN,VSYS): 3.3V to 5.5V Input Voltage Range (DVDD): 1.5V to 3.4V Off Current : 25 μA (Typ) [RTC+ Coulomb counter+ LDO_SNVS+ 32kOSC only] Operating temperature range: -40°C to +85°C Package W(Typ) D(Typ) H(Max) UQFN64MV8080 8.0mm x 8.0mm x 1.0mm Status of this document The English version of this document is formal specification. A customer may use this translation version only for a reference to help reading the formal version. If there are any differences in translation version of this document formal version takes priority. |
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