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PDF BD71815AGW Data sheet ( Hoja de datos )
| Número de pieza | BD71815AGW | |
| Descripción | System PMIC | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
System PMIC for
Battery Powered Systems
BD71815AGW
General Description
BD71815AGW is a single-chip power management IC
for battery-powered portable devices. The IC integrates
5 buck converters, 8 LDOs, a boost driver for LED, and
a 500mA single-cell linear charger. Also included is a
Coulomb counter, a real-time clock (RTC), a 32 kHz
crystal oscillator and a general-purpose output (GPO).
The IC’s buck converters supply power to the application
processor as well as system peripherals such as DDR
memory, wireless modules, and touch controllers. These
regulators maintain high efficiency over a wide range of
current loads by supporting both PFM and PWM modes.
They also operate at a high switching frequency of
6MHz, which allows the use of smaller and cheaper
inductors and capacitors. The regulator supplying the
processor core also supports Dynamic Voltage Scaling
(DVS).
Features
5 buck converters:
- 3 1000mA buck converters
- 1 800mA buck converter
- 1 500mA buck converter
3 general-purpose LDOs
- 2 100mA LDOs
- 1 50mA LDO
LDO for DDR Reference Voltage (DVREF)
LDO for Secure Non-Volatile Storage (SNVS)
LDO for Low-Power State Retention (LPSR)
LDO for SD Card with dedicated enable terminal
LDO for SD Card Interface with dedicated terminal
to dynamically change output voltage
White LED Boost Converter
-25mA LED Boost Converter
Single-cell Linear LIB Charger with 30V OVP
-Selectable charging voltage: 3.72 to 4.34 V
-Programmable charge current: 100 to 500mA
-Support for up to 2000mA charge current using
external MOSFET
-DCIN over voltage protection
-Battery over voltage protection
-Battery Supplement Mode support
-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% or 30mΩ, ±1%)
-1-sec cycle, 28-bit accumulation
-Coulomb count while charging/discharging
Battery Monitoring and Alarm Output
-Under Voltage Alarm while discharging
-Over Current Alarm
-Over/Under Temperature Alarm
-Programmable thresholds and time durations
Real Time Clock with 32.768kHz crystal oscillator
-32.768kHz clock output
(Open Drain or CMOS Output Selectable)
1 GPO (Open Drain or CMOS Output Selectable)
Power Control I/O
-Power On/Off control input
-Standby Input for switching RUN/SUSPEND State
-Reset Input to reset hung PMIC
-Power On Reset output
1 LED Indicator
-Indicate charger status
I2C interface
Applications
E-Book reader
Media players with smart devices, wearables
Portable Navigation Devices with Home POS,
Human Machine Interfaces
Key Specifications
Input Voltage Range (DCIN):
3.5V to 28V
Input Voltage Range (VIN, VSYS): 2.9V to 5.5V
Input Voltage Range (DVDD):
1.5V to 3.4V
Off Current:
20 μA (Typ)
[RTC+ Coulomb counter+ LDO_SNVS only]
Operating temperature range: -40°C to +85°C
Package
UCSP55M4C
W(Typ) x D(Typ) x H(Max)
4.0mm x 4.0mm x 0.62mm
D71815A
(Unit :mm)
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
1/103
TSZ02201-0Q4Q0AB00610-1-2
5.Oct.2016 Rev.001
1 page  
BD71815AGW
Pin Configuration
BOTTOM VIEW
J
H
G
F
E
D
C
B
A
GND
HX6
PVIN3
LX3
PGND3
SNVSC
PGND4
LX4
GND
LX6 FB6 PVIN6 FB3 SDA VODVREF FB4 VO4 PVIN4
PGND5
PGND6
VO6
DVDD
SCL
LDO4
VEN
DVREFIN
VO5
VINL2
LX5
GND
RESET
INB
GND
GND
GND
INTB
GND PGND2
PVIN5
FB5 STANDBY GND
GND
GND
POR
FB2
LX2
XOUT
GPO1
WDOGB
GND GND VO3 VO2 PVIN2
XIN
PWRON
CLK32K
OUT
LDO5
VSEL
BATTP
TS
CHGLED
VO1
VINL1
DCIN
READY
VIN
PGATE
CHGGND
BATTM
VOLPSR
FB1
PGND1
DCIN
DCIN
VSYS
VSYS
VBAT
CHGREF
PVIN1
LX1 PGND1
123456789
Figure 3. Pin Configuration (Bottom View)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/103
TSZ02201-0Q4Q0AB00610-1-2
5.Oct.2016 Rev.001
5 Page 
BD71815AGW
2. Power ON/OFF Sequence
VBAT
VSYS
SNVS
3.6V
3.2V
3.6V
2.35V
3.0V
C32KOUT
Power State SHUTDOWN
PWRON
COIN
over 100ms
SNVS
Pull up to SNVS
RUN
(ARM=1GHz mode)
LPSR
(for LowPowerStateRetention)
LDO1
(for NVCC_GPIO2)
BUCK1
(for ARM)
BUCK2
(for SOC)
BUCK3
(for VDDA_1P8, VDDA_1P8)
LDO2
(for NVCC_3P3)
BUCK4
(for NVCC_DRAM)
DVREF
(for DDR VREF)
BUCK5
(for Periphral)
LDO5
(for eMMC)
LDO3
(for VDDA_USB1/2_3P3)
LDO4
(for SD card)
POR
(Pull up to LPSR)
READY
(Pull up to DVDD)
Up to 0.25ms
0.24ms 1.8V
0.49ms
3.3V
0.73ms
1.1V
0.98ms
1.0V
1.22ms
1.8V
1.46ms
3.3V
1.71ms
1.2V
1.94ms
0.6V
2.20ms
3.3V
2.44ms
3.3V
3.3V
3.91ms
3.91ms
SNVS
2.9V
COIN
2.2V
SHUTDOWN
BUCK2 is turned off after BUCK4 is turned off.
Figure 5. Power ON/OFF Sequence
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/103
TSZ02201-0Q4Q0AB00610-1-2
5.Oct.2016 Rev.001
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet BD71815AGW.PDF ] | |
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