BQ24250C系列介绍资料

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BQ24250C

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SYSOFF 模式下具有 1uA 静态电流、I2C 控制型单节 2A 降压型电池充电器

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The bq24250C is a highly integrated single-cell Li-Ion battery charger and system power-path management device targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that operates from either a USB port or AC wall adapter for a versatile solution.

High-efficiency Switch-mode Charger with Separate Power Path
Start up System from Deeply Discharged or Missing Battery
USB Charging Compliant
- Selectable Input Current Limit of 100 mA, 500 mA, 900 mA,
  1.5 A, and 2 A
In Host Mode (After I²C Communication Starts and Before
Watchdog Timer Times Out)
- Programmable Battery Charge Voltage, V_BATREG
- Programmable Charge Current (I_CHG)
- Programmable Input Current Limit (I_LIM)
- Programmable Input Voltage Based Dynamic Power
  Management threshold, (V_{IN_DPM})
- Programmable Input Overvoltage Protection Threshold
  (V_OVP)
- Programmable Safety Timer
Resistor Programmable Defaults for:
- I_CHG up to 2 A with Current Monitoring Output
  (ISET)
- I_LIM up to 2 A with Current Monitoring Output (ILIM)
- V_{IN_DPM} (VDPM)
Watchdog Timer Disable Bit
Integrated 4.9 V, 50 mA LDO
Complete System Level Protection
- Input UVLO, Input Over-voltage Protection (OVP),
  Battery OVP, Sleep Mode, VIN_DPM
- Input Current Limit
- Charge Current Limit
- Thermal Regulation
- Thermal Shutdown
- Voltage Based NTC Monitoring Input
- Safety Timer
20 V Maximum Input Voltage Rating
10.5 V Maximum Operating Input Voltage
Low R_DS(on) Integrated Power FETs for up to 2 A
Charging Rate
Open Drain Status Outputs
Synchronous Fixed-frequency PWM Controller Operating at
3MHz for Small Inductor Support
Robust Battery Detection Algorithm
Charge Time Optimizer for improved charge times at any given
charge current
2.4 × 2.0 mm 30-ball WCSP Packages

Number of series cells	1
Charge current (max) (A)	2
Vin (max) (V)	10.5
Cell chemistry	Li-Ion/Li-Polymer
Battery charge voltage (min) (V)	3.5
Battery charge voltage (max) (V)	4.44
Absolute max Vin (max) (V)	20
Control topology	Switch-Mode Buck
Control interface	I2C, Standalone (RC-Settable)
Features	BAT temp thermistor monitoring (JEITA profile), BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Integrated LDO, Power Path
Vin (min) (V)	4.35
Rating	Catalog
Operating temperature range (°C)	-40 to 85

DSBGA (YFF)

5.71999999999999912 mm² 2.2 x 2.5999999999999996

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BQ24250C

SYSOFF 模式下具有 1uA 静态电流、I2C 控制型单节 2A 降压型电池充电器

4000-306-326