BQ24745RHDR - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

BQ24745RHDR
Manufacturer

TI
ChipWorker Part#

CW52132267
Category

Battery Management IC
Package

VQFN-28
Description

Battery Charge Management SMBus-Controlled Level 2 Multi-Chemistry Battery Charger With Input Current Detect Comparator Battery Charger Lead-Acid/Li-Ion/Li-Pol/NiCD/NiMH 128mA to 8064mA 1.024V to 19.2V 28Pin VQFN EP T/R
Documentation

Datasheet

BQ24745RHDR Global Supplier

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BQ24745RHDR Specifications

Attribute	Attribute Value

Part Number	BQ24745RHDR
Manufacturer	TI
ChipWorker Part#	CW52132267
Category	Battery Management IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	28 Pin
Case/Package	VQFN-28
Input Voltage (DC)	24.0 V
Output Voltage	1.024V ~ 19.2V
Switching Frequency	300 kHz
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	0 ℃
Supply Voltage	7 V
Supply Voltage (Max)	24 V
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Size-Height	0.95 mm
Operating Temperature	-40℃ ~ 125℃ (TJ)
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
ECCN Code	EAR99

Product Description

DESCRIPTION
The bq24745 is a high-efficiency, synchronous
battery charger with an integrated input-current
comparator, offering low component count for
space-constrained, multi-chemistry battery-charging
applications. SMBus input-current, charge-current,
and charge-voltage DACs allow very high regulation
accuracies that can be easily programmed by the
system power-management microcontroller using the
SMBus. The bq24745 charges two, three, or four
series Li+ cells, and is available in a 28-pin, 5x5 mm2
thin QFN package.
FEATURES
• NMOS-NMOS Synchronous Buck Converter with 300 kHz Frequency and >95% Efficiency
• 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
• High-Accuracy Voltage and Current Regulation
– ±0.5% Charge Voltage Accuracy
– ±3% Charge Current Accuracy
– ±3% Adapter Current Accuracy
– ±2% Input Current Sense Amp Accuracy
• Integration
– Input Current Comparator, With Adjustable Threshold and Hysteresis
– Internal Soft-Start
• Safety
– Input Overvoltage Protection (OVP)
– Dynamic Power Management (DPM)
• Up to 19.2 V Battery Voltage
• 6 V–24 V AC/DC-Adapter Operating Range
• Simplified SMBus Control
– Charge Voltage DAC (1.024 V–19.2 V)
– Charge Current DAC (128 mA–8.064 A)
– Adapter Current Limit DPM DAC (256mA–11.004 A)
• Status and Monitoring Outputs
– AC/DC Adapter Present with Adjustable Voltage Threshold
– Input Current Comparator, With Adjustable Threshold and Hysteresis
– Current Sense Amplifier for Current Drawn From Input Source
• Charge Any Battery Chemistry: Li+, NiCd,NiMH, Lead Acid, etc.
• Cells Pin Supports Two to Four Li-Ion Cells
• Charge Enable Pin
• < 10-µBattery Current with Adapter Removed
APPLICATIONS
• < 1 mA Input DCIN Current with Adapter Present and Charge Disabled
• 28-pin, 5x5-mm2 QFN Package
• Notebook and Ultra-Mobile Computers
• Portable Data-Capture Terminals
• Portable Printers
• Medical Diagnostics Equipment
• Battery Bay Chargers
• Battery Back-up Systems

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Delivery

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TNT

EMS

OCS

SF EXPRESS

Chipworker Certification

Ordering Information

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- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
- Income quality control (IQC), 800+ qualified distributors.
- Authorities test the chip to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray inspection
- XRF inspection
- Electrical testing
- Surface testing

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