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company blog about BQ25306RTER: 17V, 3.0A Highly-Integrated Standalone 1-2 Cell Buck Battery Charger

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Company BLOG
BQ25306RTER: 17V, 3.0A Highly-Integrated Standalone 1-2 Cell Buck Battery Charger
Latest company news about BQ25306RTER: 17V, 3.0A Highly-Integrated Standalone 1-2 Cell Buck Battery Charger

BQ25306RTER: 17V, 3.0A Highly-Integrated Standalone 1-2 Cell Buck Battery Charger

 

The BQ25306RTER is a highly-integrated standalone switch-mode battery charger for 1-cell and 2-cell Li-ion, Li-polymer, and LiFePO4 batteries. The BQ25306 supports 4.1-V to 17-V input voltage and 3-A fast charge current.The integrated current sensing topology of the device enables high charge efficiency and low BOM cost. The best-in-class 200-nA low quiescent current of the device conserves battery energy and maximizes the shelf time for portable devices. The BQ25306 is available in a 3x3 WQFN package for easy 2-layer layout and space limited applications.

 

The BQ25306RTER supports a 4.1-V to 17-V input to charge either single cell batteries or dual batteries in series with charge voltage from 3.4 V to 9.0 V programmable by resistor divider. The BQ25306provides up to 3-A continuous charge current to a single cell (1S) battery or dual cell batteries in series (2S). The device features fast charging for portable devices. Its input voltage regulation delivers maximum charging power to the battery from input source. The solution is highly integrated with an input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), and low-side switching FET (LSFET, Q3).

 

The STAT pin output reports charging status and fault conditions. When the input voltage is removed, the device automatically enters HiZ mode with very low leakage current from battery to the charger device. The BQ25306 is available in a 3 mm x 3 mm thin WQFN package.

latest company news about BQ25306RTER: 17V, 3.0A Highly-Integrated Standalone 1-2 Cell Buck Battery Charger  0

Specification Of BQ25306RTER

Number of series cells: 2
Charge current (max) (A): 3
Vin (max) (V): 17
Cell chemistry: Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4
Battery charge voltage (min) (V): 3.4
Battery charge voltage (max) (V): 9
Absolute max Vin (max) (V): 28
Control topology: Switch-Mode Buck
Control interface: Standalone (RC-Settable)
Features: BAT temp thermistor monitoring (hot/cold profile), IINDPM (Input current limit), Input OVP
Vin (min) (V): 4
Operating temperature range (°C): -40 to 85


Features Of BQ25306RTER

Standalone charger and easy to configure
High-efficiency, 1.2-MHz, synchronous switch-mode buck charger
- 92.5% charge efficiency at 2A from 5-V input for 1-cell battery
- 91.8% charge efficiency at 2A from 9-V input for 1-cell battery
- 95% charge efficiency at 2A from 12-V input for 2-cell battery
Single input to support USB input and high voltage adaptors
- Support 4.1-V - 17-V input voltage range with 28-V absolute maximum input voltage rating
- Input Voltage Dynamic Power Management (VINDPM) tracking battery voltage
High integration
- Integrated reverse blocking and synchronous switching MOSFET
- Internal input and charge current sense
- Internal loop compensation
- Integrated bootstrap diode
3.4-V to 9.0-V programmable charge voltage
3.0-A maximum fast charge current
200-nA low battery leakage current at 4.5-V VBAT
4.25-µA VBUS supply current in IC disable mode
Charge current thermal regulation at 120°C
Precharge current: 10% of fast charge current
Termination current: 10% of fast charge current
Charge accuracy
- ±0.5% charge voltage regulation
- ±10% charge current regulation
Safety
- Thermal regulation and thermal shutdown
- Input Under-Voltage Lockout (UVLO) and Over-Voltage Protection (OVP)
- Battery overcharge protection
- Safety timer for precharge and fast charge
- Charge disabled if battery feedback pin FB is open or short
- Cold/hot battery temperature protection
- Fault report on STAT pin
Available in WQFN 3x3-16 package

 

Pin Configuration And Functions Of BQ25306RTER

latest company news about BQ25306RTER: 17V, 3.0A Highly-Integrated Standalone 1-2 Cell Buck Battery Charger  1

 

Applications Of BQ25306RTER

• Wireless speaker
• Gaming
• Cradle charger
• Medical

 

The BQ25306RTER features lossless integrated current sensing to reduce power loss and BOM cost with minimized component count. It also integrates a bootstrap diode for the high-side gate drive and battery temperature monitor to simplify system design. The device initiates and completes a charging cycle without host control. The BQ25306 charge voltage and charge current are set by external resistors.

 

The BQ25306RTER charge voltage is programmed by an external resister divider and it charges the battery in three phases: pre-conditioning, constant current, and constant voltage. At the end of the charging cycle, the charger automatically terminates if the charge current is below the termination current threshold and the battery voltage is above the recharge threshold. When the battery voltage falls below the recharge threshold, the charger will automatically start another charging cycle. The charger provides various safety features for battery charging and system operations, including battery temperature monitoring based on negative temperature coefficient (NTC) thermistor, charge safety timer, input over-voltage and over-current protections, as well as battery over-voltage protection. Pin open and short protection is also built in to protect against the battery voltage feedback pin FB or feedback resistors accidently open or short. The thermal regulation regulates charge current to limit die temperature during high power operation or high ambient temperature conditions.

 

 

Simplified Application Of BQ25306RTER

latest company news about BQ25306RTER: 17V, 3.0A Highly-Integrated Standalone 1-2 Cell Buck Battery Charger  2

 

FAQ
Q. Are your products original?
A: Yes, all products are original, new original import is our purpose.
Q:Which Certificates do you have?
A:We are ISO 9001:2015 Certified Company and member of ERAI.
Q:Can you support small quantity order or sample?Is the sample free?
A:Yes,we support sample order and small order.Sample cost is different according to your order or project.
Q:How to ship my order? Is it safe?
A:We use express to ship,such as DHL,Fedex,UPS,TNT,EMS.We can also use your suggested forwarder.Products will be in good packing and ensure the safety and we are responsible to product damage to your order.
Q:What about the lead time?
A:We can ship stock parts within 5 working days.If without stock,we will confirm lead time for you based on your order quantity.

 

Pub Time : 2024-10-26 13:44:13 >> News list
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ShenZhen Mingjiada Electronics Co.,Ltd.

Contact Person: Mr. Sales Manager

Tel: 86-13410018555

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