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BQ25628RYKR

Name: BQ25628RYKR
Rating: 4.7 (12 reviews)

IC CONTROLLED, 18-V MAX INPUT, 2

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規格

Part Status	Active
Battery Chemistry	Lithium Ion/Polymer
Number of Cells	1
Current - Charging	Constant - Programmable
Programmable Features	Current, Timer, Voltage
Fault Protection	Over Current, Over Temperature, Over-Under Voltage, Short Circuit
Charge Current - Max	2A
Battery Pack Voltage	4.8V (Max)
Voltage - Supply (Max)	18V
Interface	I2C
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package	18-PowerWFQFN
Supplier Device Package	18-WQFN-HR (3x2.5)
Packaging	Cut Tape (CT), Tape & Reel (TR)

概述

Description

The bq25628RYKR is TI’s single‑cell Li‑ion/Li‑polymer battery charger with integrated power‑path management and an I2C‑compatible control interface. It accepts USB power (5 V nominal) and charges a 1‑cell battery with a programmable charge current (via the I2C interface) and a 4.2 V constant‑voltage stage. It provides system power to the load through a power path, so the device can operate while the battery is charging. Key features typically include thermal regulation, safety protections (overcurrent/short‑circuit, overvoltage, and battery over/undervoltage protection), and battery temperature monitoring via an external thermistor. The RYKR suffix indicates the specific package and temperature grade. Applications include portable devices, wearables, and USB powered accessories. For exact electrical specs, pinout, and register map, consult TI’s datasheet and product page.

Features

Here are the key features of the TI bq25628RYKR:
- Single-cell Li-Ion/Li-Pol charger with high-efficiency integrated switching regulator.
- Input from 5V source (USB/external) with programmable input current limit.
- CC/CV charging with programmable charging current and termination.
- Power-path management to power the system load while charging (no battery starvation).
- Pre-charge/trickle charge for deeply discharged cells.
- Programmable charging voltage (typical options around 4.2V / 4.35V depending on battery).
- Battery protection and safety: overvoltage, overcurrent/short-circuit protection, thermal regulation.
- Battery temperature monitoring (NTC or internal) for safe charging.
- Status and fault indicators with an interface (I2C/SMBus) for control and monitoring.
- Small integrated solution suitable for compact devices (compact package).
Note: exact programmable ranges and package details vary by revision; consult the datasheet for precise electrical specs and register maps.

Package

VQFN-16 package (3 × 3 mm) with an exposed pad.

Pinout

- Pin count: 12 pins (12‑lead package, e.g., WQFN/QFN-12).
- Function: A single‑cell Li‑ion battery charger with integrated power‑path. It accepts a 5V input (VIN), charges the BAT pin, provides a SYS output for system load, and uses PROG to set the charge current (with ISET for current limit). Includes EN/CE for enable, TS for temperature sensing, GND, and other control/status pins.

Manufacturer

Manufacturer: Texas Instruments Incorporated (TI).
What kind of company: An American multinational semiconductor company that designs and manufactures analog and mixed-signal integrated circuits (power management, signal processing, embedded processing, etc.).

Application

BQ25628RYKR is a single-cell Li‑ion battery charger IC with USB input and power-path features, intended for compact portable products. Suitable application areas include wearables (smartwatches, fitness bands), handheld/portable consumer electronics, USB-powered accessories and power banks, battery-powered IoT sensors and gateways, and small medical/health devices requiring safe onboard charging.