BQ25628RYKR
ActiveI²C-CONTROLLED, 18-V MAX INPUT 2-A SINGLE-CELL BATTERY CHARGER WITH BOOST MODE AND ADC
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BQ25628RYKR
ActiveI²C-CONTROLLED, 18-V MAX INPUT 2-A SINGLE-CELL BATTERY CHARGER WITH BOOST MODE AND ADC
Technical Specifications
Parameters and characteristics for this part
| Specification | BQ25628RYKR |
|---|---|
| Battery Chemistry | Lithium Ion/Polymer |
| Charge Current - Max [Max] | 2 A |
| Current - Charging | Constant - Programmable |
| Fault Protection | Over Temperature, Short Circuit, Over Current, Over-Under Voltage |
| Interface | I2C |
| Mounting Type | Surface Mount |
| Number of Cells | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 18-PowerWFQFN |
| Programmable Features | Current, Timer, Voltage |
| Supplier Device Package | 18-WQFN-HR |
| Supplier Device Package [x] | 3 |
| Supplier Device Package [y] | 2.5 |
| Voltage - Supply (Max) [Max] | 18 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 | $ 3.12 | |
| 10 | $ 2.80 | |||
| 25 | $ 2.65 | |||
| 100 | $ 2.29 | |||
| 250 | $ 2.17 | |||
| 500 | $ 1.95 | |||
| 1000 | $ 1.65 | |||
| Digi-Reel® | 1 | $ 3.12 | ||
| 10 | $ 2.80 | |||
| 25 | $ 2.65 | |||
| 100 | $ 2.29 | |||
| 250 | $ 2.17 | |||
| 500 | $ 1.95 | |||
| 1000 | $ 1.65 | |||
| Tape & Reel (TR) | 3000 | $ 1.44 | ||
| 6000 | $ 1.38 | |||
| Texas Instruments | LARGE T&R | 1 | $ 2.16 | |
| 100 | $ 1.89 | |||
| 250 | $ 1.33 | |||
| 1000 | $ 1.07 | |||
BQ25628 Series
I²C-controlled, 18-V max input 2-A single-cell battery charger with boost mode and ADC
| Part | Supplier Device Package [x] | Supplier Device Package | Supplier Device Package [y] | Battery Chemistry | Charge Current - Max [Max] | Interface | Voltage - Supply (Max) [Max] | Fault Protection | Current - Charging | Package / Case | Mounting Type | Programmable Features | Number of Cells | Operating Temperature [Max] | Operating Temperature [Min] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25628RYKR | 3 | 18-WQFN-HR | 2.5 | Lithium Ion/Polymer | 2 A | I2C | 18 V | Over Current, Over Temperature, Over-Under Voltage, Short Circuit | Constant - Programmable | 18-PowerWFQFN | Surface Mount | Current, Timer, Voltage | 1 | 85 °C | -40 °C |
Description
General part information
BQ25628 Series
The BQ25628 and BQ25629 are highly-integrated 2A switch-mode battery charge management and system power path management devices for single cell Li-ion and Li-polymer batteries. The solution is highly integrated with built-in current sensing, loop compensation, input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. The device uses narrow VDC power path management, regulating the system slightly above the battery voltage without dropping below a configurable minimum system voltage. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time, extends battery life during discharging phase, and the ultra-low 0.15µA ship mode current extends battery shelf life. The I2C serial interface with charging and system settings makes BQ25628 and BQ25629 truly flexible solutions.
The BQ25628 has the ILIM pin to set the default input current limit and TS_BIAS pin for controlled thermistor bias. The BQ25629 supports a wide range of input sources, including standard USB host port and USB charging port. The device is compliant with USB 2.0 and USB 3.0 power specifications for input current and voltage regulation and meets the USB On-the-Go (OTG) operation power rating specification up to 2.0A.
The power path management regulates the system slightly above battery voltage but does not drop below the programmable minimum system voltage. With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or input voltage limit is reached, the power path management automatically reduces the charge current. As the system load continues to increase, the battery starts to discharge until the system power requirement is met. This supplement mode prevents overloading the input source.