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The HT4928S is a highly integrated mobile power
supply Management chip, built-in charge
management module, LED indicator Block, boost
discharge management module, and use small
SOP8 Package, the periphery can be composed
of very few components Powerful mobile power
solution.
Main features
◆ Highly integrated, few peripheral components; Highly integrated, few peripheral components;
◆ Highly integrated, few peripheral components; Built-in fixed 0.8A linear charging mode;
◆ Highly integrated, few peripheral components; turbulent / constant current / constant voltage
three-stage charging, constant voltage 4.20V
(typical), supporting charging of 0V battery;
◆ Highly integrated, few peripheral components; Built-in charging can automatically reduce the
charging current according to the temperature
rise. 130 degrees begins to decline, and the
minimum can be reduced to 0;
◆ Highly integrated, few peripheral components; The charging input has anti-backflow function,
no need for anti-reverse irrigation diode;
◆ Highly integrated, few peripheral components; Boost uses synchronous rectification circuit,
the efficiency is up to 91%, Low heat, fixed 5.1V
output, no external resistor required
◆ Highly integrated, few peripheral components; Output current 0.8A (typical value at 3.6V
battery), with Constant power output function,
complete overcurrent, short circuit protection
◆ Highly integrated, few peripheral components; Load insertion automatically starts boost, load
removal Automatic sleep
◆ Highly integrated, few peripheral components; Battery low voltage reminder function;
◆ Highly integrated, few peripheral components; Single/dual lamp charging and discharging
instructions;
◆ Highly integrated, few peripheral components; Common input/output port, intelligent
identification charging/discharging of electricity;
◆ Highly integrated, few peripheral components; 4KV ESD;
◆ Highly integrated, few peripheral components; Fixed switching frequency 1MHZ;
◆ Highly integrated, few peripheral components; Battery overcharge and over discharge
protection;
◆ Highly integrated, few peripheral components; SOP8 small package
Typical application
◆ Highly integrated, few peripheral components; Mobile power
◆ Highly integrated, few peripheral components; LED lighting system
◆ Highly integrated, few peripheral components; Toy
The BP3286J is a high-efficiency, high-PF LED driver chip that supports SCR dimming. Operating in inductor current critical continuous mode, it is suitable for Buck-Boost LED driver power supplies. The BP3286J integrates a 600V power switch and employs a patented gate drive and high-voltage power supply method, requiring very few external components to achieve excellent constant current characteristics, significantly reducing system cost and size. The BP3286J features multiple protection functions, including LED open-circuit protection (overvoltage protection), LED short-circuit protection, and chip temperature overheating regulation. The BP3286J is packaged in an SOP-8 package.
RZC7512It is dual channelUSBDedicated charging port (DCP)(BC1.2) controller. With automatic detection feature, it monitorsUSBThe MCU automatically
detects the data line voltage and automatically provides the correct voltage characteristics on the data line to provide compatible charging for the following
dedicated charging configurations:
1. Apple Divider DCP, requiringD+andD-Apply to the line2.7VVoltage
2. BC1.2 DCP, requiringD+Short circuit toD-line
3.China Telecom StandardYD/T 1591-2009Short-circuit mode requiresD+Short circuit toD-line
4. Samsung DCP,RequireD+Line andD-The voltage on the line is1.2V
The SD4947 is a DC-DC converter control chip for buck switching power supplies, driving external MOSFETs. The SD4947 features integrated high-voltage supply for fast startup, adaptive frequency reduction to further optimize conversion efficiency under light load conditions, and built-in frequency dithering to optimize EMI. The SD4947 also integrates various abnormal state protection functions, including: cycle-by-cycle peak current protection, VDD overvoltage protection, undervoltage protection, output overload protection, output overvoltage protection, and overtemperature protection.
Power Management (PMIC)/DC-DC Converters
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