Switch Mode Charger Li-Ion Pack 4.5mA 12.6V to 16.8V 40-Pin VQFN EP T/R, BQ24730RGFT, Texas Instruments

The bq24730 is a high efficiency synchronous battery pack charger with high level of integration for portable applications. This device implements a high performance analog front-end thatinterfaces to the system power management micro-controller through a hardware interface. The dynamic power management (DPM) function modifies the charge current depending on system load conditions, avoiding ac adapter overload. High accuracycurrent sense amplifiers enable accurate measurement of either the charge current or the ac adapter current, allowing termination of nonsmart packs and monitoring of overall system power.The input current sense amplifier can be enabled with no adapterto sense battery discharge current. Integrated features such as charger soft start, charge overcurrent protection, and IC temperature monitoring provide a second level of protection, in addition to pack and system protection functions.

High Efficiency:

NMOS-NMOS Synchronous Buck Converter With Fixed 300 kHz Frequency
Enhanced 6-V Drive Supply Voltage and 99.5% Max Duty Cycle

High Voltage and Current Regulation Accuracy (0°C-85°C):

0.4% Charge Voltage Regulation Accuracy
4% Charge Current Regulation Accuracy
4% Adapter Current Regulation Accuracy Dynamic Power Management (DPM)

3-Cell or 4-Cell Li-Ion Battery Voltage Select

Programmable Battery Charge Current, and AC Adapter Current via Resistor

2% Accurate Current Sense Amplifiers for Both Input Current and Charge Current (0°C-125°C)

Input Current Sense Amplifier Can Be Enabled with No Adapter to Sense Battery Discharge Current

Regulates Charge Current Down to 0-V Battery Voltage

AC Adapter Operating Range 8 V-24 V

Internal Soft Start

Status Indicators:

AC Adapter Present
Low Battery Indicator
DPM Regulation Loop Active Indicator

Reverse Battery to Adapter Discharge Protection

Battery/Adapter to System Power Selector Function

Charge Overcurrent Protection

Available in 40-Pin 5x7mm QFN Package

APPLICATIONS

Portable Notebook Computers
Portable DVD Players
Webpads, PC Tablets

Характеристики

Battery_type	Li-Ion Packs
Operating_supply_voltage	0 to 24 V
Supplier_package	VQFN EP
Specifications	http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=BQ24730&&fileType=pdf
Schedule_b	8542390000
Product_dimensions	7 x 5 x 0.88 mm
Pin_count	40
Output_voltage	12.6 to 16.8 V
Output_current	4.5 mA
Operating_temperature	-40 to 85 °C
Бренд	Texas Instruments
Msl_level	3
Mounting	Surface Mount
Max_processing_temp	260
Lead_finish	Gold
Kind	Switch Mode Charger
Htsn	8542390001
Eccn	EAR99
Country_of_origin	United States

SKU: BQ24730RGFT

Description