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PDF BD71805MWV Data sheet ( Hoja de datos )

Número de pieza BD71805MWV
Descripción System PMIC
Fabricantes ROHM Semiconductor 
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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
UQFN64MV8080
W(Typ) D(Typ) H(Max)
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.
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed for protection against radioactive rays
1/96
TSZ02201-0Q4Q0AB00050-1-2
27.Feb.2015 Rev.001

1 page




BD71805MWV pdf
BD71805MWV
Pin Configuration
RESETINB
PGND2
FB2
GND
PWRON
STANDBY
MSSEL
GPO1
GPO2
GPO3
VODVREF
DVREFIN
CPOUT
FB4
PGND4
LX4
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
32 PVIN1
31 PVIN1
30 VIN
29 VO3
28 VINL2
27 VO2
26 VO1
25 VINL1
24 INTB
23 POR
22 GNDT1
21 FB3
20 PGND3
19 PGND3
18 LX3
17 LX3
Figure 5. Pin Configuration (Top View)
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
5/96
TSZ02201-0Q4Q0AB00050-1-2
27.Feb.2015 Rev.001

5 Page





BD71805MWV arduino
BD71805MWV
Table 6. BD71805MWV Output Power Rails (continued)
BUCKx
#
ON[5:0]
STBY[5:0]
BUCK1
[V]
BUCK2
[V]
BUCK3
[V]
OFF[5:0]
43 10 1011
1.875
1.875
44 10 1100
1.900
1.900
45 10 1101
1.925
1.925
46 10 1110
1.950
1.950
47 10 1111
1.975
1.975
48 11 0000
2.000
2.000
49 11 0001
50 11 0010
51 11 0011
52 11 0100
53 11 0101
54 11 0110
55 11 0111
56 11 1000
57 11 1001
58 11 1010
59 11 1011
60 11 1100
61 11 1101
62 11 1110
63 11 1111
Voltage step
25mV
25mV
50mV
BUCK4
[V]
50mV
LDOx[5:
0]
10 1011
10 1100
10 1101
10 1110
10 1111
11 0000
11 0001
11 0010
11 0011
11 0100
11 0101
11 0110
11 0111
11 1000
11 1001
11 1010
11 1011
11 1100
11 1101
11 1110
11 1111
-
LDO1
[V]
2.950
3.000
3.050
3.100
3.150
3.200
3.250
3.300
50mV
LDO2
[V]
2.950
3.000
3.050
3.100
3.150
3.200
3.250
3.300
LDO3
[V]
2.950
3.000
3.050
3.100
3.150
3.200
3.250
3.300
50mV
50mV
Initial voltage of Master control mode
Initial voltage of Slave control mode
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111 15 001
11/96
TSZ02201-0Q4Q0AB00050-1-2
27.Feb.2015 Rev.001

11 Page







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