Battery pack with protection & gauge
Lansheng Technology Limited
Integrated Circuits distributor for over 10 years
Charge/discharge power stage
The charge/discharge power stage is used to protect the battery pack from abnormalities such as over voltage, over current charging/discharging, over temperature and external short-circuit. This can be implemented by using two low voltage FETs, which are controlled by the AFE.
Products
N-channel MOSFETs
CSD18514Q5A—40-V, N channel NexFET? power MOSFET, single SON 5 mm x 6 mm, 4.9 mOhm
CSD13381F4—12-V, N channel NexFET? power MOSFET, single LGA 1 mm x 0.6mm, 180 mOhm, gate ESD protection
CSD19536KTT—100-V, N channel NexFET? power MOSFET, single D2PAK, 2.4 mOhm
Battery protectors
BQ77216—Voltage and temperature protection for 3-s to 16-s cell Li-ion batteries with internal delay timer
BQ7718—Family 2-5S Overvoltage Protector with Internal Delay Timer
BQ77915—3-series to 5-series stackable ultra-low-power primary protector with autonomous cell balancing
BQ2947—Lithium-ion protection for accurate cell-by-cell voltage monitoring
BQ76200—High-side n-channel FET driver
Auxiliary power supply
The auxiliary power supply sub-system in battery pack consists of LDO for powering the various sub-systems present inside the battery pack.
Products
Linear & low-dropout (LDO) regulators
TLV709—150-mA 30-V low-dropout (LDO) linear regulator with 3.2-μA supply current
TPS7B83-Q1—Automotive 150-mA, 40-V, low-dropout (LDO) linear regulator with fast transient response
TPS709—150-mA, 30-V, ultra-low-IQ, low-dropout voltage regulator with reverse current protection and enable
TPS7B82-Q1—Automotive 300-mA, off-battery (40-V), ultra-low-IQ LDO with enable in AEC-Q100 Grade-0 and Grade-1
Buck converters (integrated switch)
LM5164—6-V to 100-V input, 1-A synchronous buck DC-DC converter with ultra-low IQ
TPS629206—3-V to 17-V, 0.6-A, low-IQ, synchronous buck converter in SOT-583 package
Monitoring/protection/cell-balancing
This sub-system is responsible for monitoring and protecting the battery pack. The data that is monitored includes individual cell voltages and pack temperature. It also implements active/passive cell balancing of each battery cell inside the battery pack.
Products
Battery protectors
BQ77216—Voltage and temperature protection for 3-s to 16-s cell Li-ion batteries with internal delay timer
BQ7718—Family 2-5S Overvoltage Protector with Internal Delay Timer
BQ77915—3-series to 5-series stackable ultra-low-power primary protector with autonomous cell balancing
BQ2947—Lithium-ion protection for accurate cell-by-cell voltage monitoring
BQ76200—High-side n-channel FET driver
Analog current-sense amplifiers
INA181-Q1—AEC-Q100, 26V, bi-directional, 350kHz current sense amplifier
General-purpose op amps
LM358B—Dual, 36-V, 1.2-MHz, 3-mV offset voltage operational amplifier with -40°C to 85°C operation
LM2902B—Quad 36-V 1.2-MHz operational amplifier
LM324B—Quad, 36-V, 1.2-MHz 3-mV offset voltage operational amplifier
Battery management control unit
The Battery Management controller subsystem implements the State of Charge (SoC) and State of Health (SoH) monitoring of the battery pack for status monitoring and indication purposes.It also consist of a MCU, which can communicate and configure the battery analog front end.Additionally, it also implements an externally exposed communication interface outside of the battery-pack for status monitoring and indication purposes.
Products
Battery fuel gauges
BQ40Z80—2-s to 6-s battery pack manager with Impedance Track? gas gauging
BQ27Z561-R2—Impedance track battery gas gauge solution for 1-series cell li-ion battery packs
BQ34Z100-R2—Multichemistry Impedance Track? stand-alone fuel gauge
BQ40Z50-R2—1-4 series Li-ion battery pack manager supporting Turbo Mode 2.0
BQ28Z620— Battery fuel gauge with integrated protector for 1-series to 2 series packs with 1.2-V I/O
BQ78350-R1A—CEDV li-ion gas gauge and battery management controller
MSP430 microcontrollers
MSP430G2553—16 MHz MCU with 16KB Flash, 512B SRAM, comparator, UART/SPI/I2C, timer
MSP430G2955—16 MHz MCU with 56KB Flash, 2KB SRAM, 10-bit ADC, comparator, UART/SPI/I2C, timer
MSP430FR2155—24 MHz MCU with 32KB FRAM, 4KB SRAM, comparator, 12-bit ADC, UART/SPI/I2C, timer
ESD protection diodes
TPD2E007—Dual 10-pF, ±13-V, ±8-kV ESD protection diode for AC Signal Data Interfaces
TPD1E10B06—12-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package
Lansheng Technology Limited, which is a spot stock distributor of many well-known brands, we have price advantage of the first-hand spot channel, and have technical supports.
Our main brands: STMicroelectronics, Toshiba, Microchip, Vishay, Marvell, ON Semiconductor, AOS, DIODES, Murata, Samsung, Hyundai/Hynix, Xilinx, Micron, Infinone, Texas Instruments, ADI, Maxim Integrated, NXP, etc
To learn more about our products, services, and capabilities, please visit our website at https://www.lanshengic.com