BQ24185YFFT
ActiveFULLY INTEGRATED SWITCH-MODE ONE-CELL LI-ION CHARGER WITH FULL USB COMPLIANCE
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BQ24185YFFT
ActiveFULLY INTEGRATED SWITCH-MODE ONE-CELL LI-ION CHARGER WITH FULL USB COMPLIANCE
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Technical Specifications
Parameters and characteristics for this part
| Specification | BQ24185YFFT |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Battery Pack Voltage | 4.44 V |
| Charge Current - Max | 1.5 A |
| Current - Charging | Constant - Programmable |
| Fault Protection | Over Voltage, Over Temperature |
| Interface | I2C |
| Mounting Type | Surface Mount |
| Number of Cells | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -30 °C |
| Package / Case | DSBGA, 25-UFBGA |
| Programmable Features | Timer |
| Supplier Device Package | 25-DSBGA |
| Voltage - Supply (Max) [Max] | 16 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 6.30 | |
| 10 | $ 5.69 | |||
| 25 | $ 5.42 | |||
| 100 | $ 4.71 | |||
| Digi-Reel® | 1 | $ 6.30 | ||
| 10 | $ 5.69 | |||
| 25 | $ 5.42 | |||
| 100 | $ 4.71 | |||
| Tape & Reel (TR) | 250 | $ 3.27 | ||
| Texas Instruments | SMALL T&R | 1 | $ 5.29 | |
| 100 | $ 4.64 | |||
| 250 | $ 3.25 | |||
| 1000 | $ 2.62 | |||
Description
General part information
BQ24185 Series
The bq24185 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters is programmable using an I2C compatible interface. The bq24185 integrates a synchronous PWM controller, power MOSFETs, input current sensing and overvoltage protection, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
The bq24185 charges the battery in three phases: conditioning, constant current and constant voltage. Charge current is programmable using the I2C interface. Additionally, the input current can be limited to a host programmable threshold to maintain maximum charge current from current-limited sources, such as USB ports. Charge is terminated based on user-selectable minimum current level. A software watchdog provides a safety backup for I2C interface while a safety timer prevents overcharging the battery. During normal operation, bq24185 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and automatically enters sleep mode or high impedance mode when the input supply is removed. The charge status is reported to the host using the I2C interface. During the charging process, the bq24185 monitors its junction temperature (TJ) and reduces the charge current if TJincreases to 125°C. To support USB OTG peripherals, the bq24185 contains boost circuitry that supplies VVBUSat 5.05V at up to 300mA by boosting the battery voltage. The bq24185 is available in 25-pin WCSP package.
The bq24185 is a compact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters is programmable using an I2C compatible interface. The bq24185 integrates a synchronous PWM controller, power MOSFETs, input current sensing and overvoltage protection, high-accuracy current and voltage regulation, and charge termination, into a small WCSP package.
Documents
Technical documentation and resources