BQ25730系列介绍资料

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BQ25730

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具有电源路径和 USB-C® PD OTG 的 I²C 1-5 节电池 NVDC 降压/升压电池充电控制器

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The BQ25730 is a synchronous NVDC buck-boost battery charge controller to charge a 1- to 5-cell battery from a wide range of input sources including USB adapter, high voltage USB-C Power Delivery (PD) sources, and traditional adapters. It offers a low component count, high efficiency solution for space constrained, 1- to 5-cell battery charging applications. The Narrow VDC buck-boost architecture avoid direct power path from input source to system voltage which implements wide input voltage range and narrow system voltage range at same time. Narrow system voltage range is valuable for faster battery supplement and lower MOSFET rating for next stage converter.

Power path control through battery MOSFET implementing independent system voltage instant-on with no battery or depleted battery
400-kHz/800-kHz programmable switching frequency for high efficiency/high power density
Buck-boost narrow voltage DC (NVDC) charger for USB-C Power Delivery (PD) interface platform
- 3.5-V to 26-V input range to charge 1- to 5-cell battery
- Charge current up to 16.2 A/8.1 A with 128-mA/64-mA resolution based on 5-mΩ/10-mΩ sensing resistor
- Input current limit up to 10 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing resistor
- Support USB 2.0, USB 3.0, USB 3.1 and USB Power Delivery (PD)
- Input Current Optimizer (ICO) to extract max input power without overloading the adapter
- Seamless transition between buck, buck-boost, and boost operations
- Input current and voltage regulation (IINDPM and VINDPM) against source overload
TI patented switching frequency dithering pattern for EMI noise reduction
TI patented Pass Through Mode (PTM) for system power efficiency improvement and battery fast charging achieving 99% efficiency.
Input and battery current monitor through dedicated pins
Integrated 8-bit ADC to monitor voltage, current and power
Battery MOSFET ideal diode operation in supplement mode to support system when adapter is fully loaded
Power up USB port from battery (USB OTG)
- 3-V to 24-V OTG with 8-mV resolution
- Output current limit up to 12.7 A/6.35 A with 100-mA/50-mA resolution based on 5-mΩ/10-mΩ sensing resistor
I²C host control interface for flexible system configuration
High accuracy for the regulation and monitor
- ±0.5% Charge voltage regulation
- ±3% Charge current regulation
- ±2.5% Input current regulation
- ±2% Input/charge current monitor
Safety
- Thermal shutdown
- Input, system, battery overvoltage protection
- Input, MOSFET, inductor overcurrent protection
Package: 32-Pin 4.0 mm × 4.0 mm WQFN

Number of series cells	1, 2, 3, 4, 5
Charge current (max) (A)	16.2
Vin (max) (V)	26
Cell chemistry	Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4, NiCd, NiMH, SuperCap
Battery charge voltage (min) (V)	1.024
Battery charge voltage (max) (V)	23
Absolute max Vin (max) (V)	32
Control topology	Switch-Mode Buck-boost
Control interface	I2C
Features	IC thermal regulation, ICO (Input Current Optimization), IINDPM (Input current limit), Input OVP, Integrated ADC, Power Path, USB C/PD compatible, USB OTG integrated, VINDPM (Input voltage threshold to maximize adaptor power)
Vin (min) (V)	3.5
Rating	Catalog
Operating temperature range (°C)	-40 to 85

WQFN (RSN)

16 mm² 4 x 4

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BQ25730

具有电源路径和 USB-C® PD OTG 的 I²C 1-5 节电池 NVDC 降压/升压电池充电控制器

4000-306-326