The bq25700A is a synchronous NVDC battery buck-boost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications.
The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the input source from being overloaded.
The bq25700A charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.
During power up, the charger sets converter to buck, boost or buck-boost configuration based on input source and battery conditions. The charger automatically transits among buck, boost and buck-boost configuration without host control.
In the absence of an input source, the bq25700A supports On-the-Go (OTG) function from 1- to 4-cell battery to generate 4.48 V to 20.8 V on VBUS. During OTG mode, the charger regulates output voltage and output current.
The bq25700A monitors adapter current, battery current and system power. The flexibly programmed PROCHOT output goes directly to CPU for throttle back when needed.
$0.00 - $6.08
Smaller than an Oreo, Faster than a Raspberry Pi
The NanoPI-NEO2 is a newly released super tiny ARM board by Friendly Elec. It uses Allwinner's 64-bit H5 quad-core SoC (ARM Cortex-A53). It has internal hexa-core Mail450 GPU, 512M DDR3 RAM. A Ubuntu Core and Armbian image files are ready for it.
The NanoPi NEO2 inherits NEO's form factor and has compatible interfaces and ports with NEO. In addition in such a small dimension it has Gbps Ethernet and one USB host port. These features make it especially suitable for applications that require high data throughput, speedy data transmission and high performance. Hobbyists and makers will just love it.
[no prices available]
The DRV832x family of devices are integrated gate drivers for three-phase applications. The devices provides three half-bridge gate drivers, each capable of driving high-side and low-side N-channel power MOSFETs. The DRV832x generates the proper gate drive voltages using an integrated charge pump for the high-side MOSFETs and a linear regulator for the low-side MOSFETs. The smart gate drive architecture supports up to 1-A source and 2-A sink peak gate drive current capability. The DRV832x can operate from a single power supply and supports a wide input supply range of 6 to 60-V for the gate driver and 4 to 60-V for the optional buck regulator.
The 6x, 3x, 1x, and independent input PWM modes allow for simple interfacing to controller circuits. Gate drive and device configuration settings are highly configurable through a SPI or hardware (H/W) interface. The DRV8323 and DRV8323R devices have three, integrated low-side shunt amplifiers that allow bidirectional current sensing on all three phases of the drive stage. The DRV8320R and DRV8323R devices integrate a 600-mA buck regulator.
A low-power sleep mode is provided to achieve low quiescent current draw by shutting down most of the internal circuitry. Internal protection functions are provided for undervoltage lockout, charge pump fault, MOSFET overcurrent, MOSFET short circuit, gate driver fault, and overtemperature. Fault conditions are indicated on the nFAULT pin with details through the device registers for SPI device variants.
$2.43 - $4.85