LC709501F Datasheet, PDF (11/30 Pages) ON Semiconductor – Power Bank Controller

LC709501F
USB Support
This device allows 2 or 3 USB ports for Power Bank application.
The USB port functions will vary by writing of prepared
Firmware. The Firmware is distinguished by the Firmware
number which is called FW01, FW02, FW05, and FW06.
 FW01 (Planning)
Micro-B input, Type-A output 2-ch, Quick Charge 3.0
HVDCP, Boost auto start-up, External Boost-IC,
Portable device communication. Displays Power Bank battery
information on smartphones. USB 2.0 Full Speed Host
Controller.
 FW02 (Released)
Micro-B input, Type-A output 2-ch, Quick Charge 3.0
HVDCP, Boost auto start-up, External Boost-IC.
 FW05 (Released)
Type-C DRP, Type-A output, Quick Charge 3.0 HVDCP,
Boost auto start-up, External Boost-IC.
 FW06 (Planning)
Supports USB-PD
The Relationship between the Firmware and the USB port
functions is shown in Table 4 and Figures 6, 7, and 8. USB1+/
port of FW01/FW02 is a power sink. This port is an input for
Buck charge. And it contains functions of BC1.2 and divided
mode. USB2+/ port is a power source. This port is an output for
Boost charge. Portable device communication and Quick Charge
3.0 are only enabled in USB2+/ port. Another power source
that is Type-A (2) is boosted by an external Boost-IC. This
device runs the Boost-IC when it detects the plug insertion to
Type-A (2).
USB1+/- port of FW05 is fully TCPCI compliant. It is capable of
controlling BC1.2 as well up to external port control IC (for USB
Type-C implementations). The port can be dual-role, upward-
facing, or downward-facing.
The firmware can be downloaded from the homepage of ON
Semiconductor. Please refer to an application note for the writing
tool.
Buck charge mode: Built-in battery charging via USB.
Boost charge mode: Charging the device from built-in battery via USB.
Table 4 Firmware vs USB functions
Firmware
FW01
(Planning)
FW02
(Released)
FW05
(Released)
Ports
USB1+/USB1-
USB2+/USB2-

USB1+/USB1-
USB2+/USB2-

USB1+/USB1-
Buck
Charge







Boost
Charge










Note) Port control IC detects the Sink connection.
USB
Type-B
Type-A (1)
Type-A (2)
Type-B
Type-A (1)
Type-A (2)
Type-C
DRP
Type-A (2)
Portable device
Communication








Quick Charge
3.0 HVDCP







(Source mode)

Divided
Mode1-3







(Sink mode)

Boost auto
start-up







(Note)

external
Boost-IC








Figure 6: The function of FW01 & FW02
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