Texas Instruments Archives - Page 44 of 128

Description

The PCA9548A has eight bidirectional translating switches that can be controlled via the I2C bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable control register.

Features

1. 1-of-8 Bidirectional Translating Switches
2. I2C Bus and SMBus Compatible
3. Active-Low Reset Input
4. Three Hardware Address Pins for Use of up to Eight PCA9548A Devices on the I2C Bus
5. Channel Selection Via I2C Bus
6. Power-Up with All Switch Channels Deselected

Applications

1. Servers
2. Routers (Telecom Switching Equipment)
3. Factory Automation
4. Products With I2C Slave Address Conflicts

Other data sheets are available within the file: PCA9548A, PCA9548ADB, PCA9548ADBG4, PCA9548ADBR

This is one of the Controller types.

Part Number: BQ24725A, Marking : BQ25A

Description

1-4 Cell Li+ Battery SMBus Charge Controller

Package: 20-pin 3.5 × 3.5 mm² VQFN Type

Manufacturer: Texas Instruments

See the preview image and the PDF file for more information.

Image

Description

The bq24725A ( Marking : BQ25A ) is a high-efficiency, synchronous battery charger, offering low component count for space-constraint, multi-chemistry battery charging applications.

The bq24725A utilizes two charge pumps to separately drive n-channel MOSFETs (ACFET, RBFET and BATFET) for automatic system power source selection.

SMBus controlled input current, charge current, and charge voltage DACs allow for very high regulation accuracies that can be easily programmed by the system power management micro-controller.

The bq24725A uses internal input current register or external ILIM pin to throttle down PWM modulation to reduce the charge current.

BQ25A Pinout

Features

1. SMBus Host-Controlled NMOS-NMOS Synchronous Buck Converter with Programmable 615kHz, 750kHz, and 885kHz Switching Frequencies

2. Automatic N-channel MOSFET Selection of System Power Source from Adapter or Battery Driven by Internal Charge Pumps

3. Enhanced Safety Features for Over Voltage Protection, Over Current Protection, Battery, Inductor and MOSFET Short Circuit Protection

BQ25A Marking Information

Official Homepage: https://www.ti.com/product/BQ24725A

Texas Instruments

PCA9548APW Datasheet – 8-Channel, I2C Switch With Reset

Description

PCA9548APW Datasheet PDF Download

BQ25A Datasheet – Battery SMBus Charge Controller – TI

Description

BQ25A Datasheet

Related articles across the web