Datasheet texas instruments bq24770
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Datasheets
ProductFolder Sample &Buy Support &Community Tools &Software TechnicalDocuments bq24725ASLUSAL0A – SEPTEMBER 2011 – REVISED AUGUST 2014 bq24725A 1-4 Cell Li+ Battery SMBus Charge Controller with N-Channel Power MOSFETSelector and Advanced Circuit Protection1 Features 3 Description The bq24725A is a high-efficiency, synchronousbattery charger, offering low component count forspace-constraint, multi-chemistry battery chargingapplications. 1 SMBus Host-Controlled NMOS-NMOSSynchronous Buck Converter with Programmable615kHz, 750kHz, and 885kHz SwitchingFrequenciesAutomatic N-channel MOSFET Selection ofSystem Power Source from Adapter or BatteryDriven by Internal Charge PumpsEnhanced Safety Features for Over VoltageProtection, Over Current Protection, Battery,Inductor and MOSFET Short Circuit ProtectionProgrammable Input Current, Charge Voltage,Charge Current Limits …
Application Notes
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How to Operate bq20z7x/8x/9x Fuel Gauge and bq24707/25/26 Chrgr w/o Host Cntrlr
PDF, 153 Кб, Файл опубликован: 31 авг 2011The bq24707/26/25 chargers and the bq20z7x/8x/9x gas gauges are both SBS-compliant integrated circuits. In this application report, both of these chargers and gas gauges are used together as a nonhost-control, battery charging system. An external regulator, TPS7A49xx, is added to the system to prevent shutting down the system during a deeply discharged state of the battery cells. It provides awa
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bq24707/25/26 Input Voltage DPM
PDF, 97 Кб, Файл опубликован: 26 янв 2011The bq24707/25/26 are high-efficiency synchronous battery chargers. They offer low component count for space-constrained, multichemistry, battery-charging applications. They feature real-time system control onthe ILIM pin to limit the charge current. In this application report, the ILIM pin is used to implement real-time, input-voltage, dynamic power management. It is used to reduce the charging
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How to Review a Multicell Switching Charger Schematic
PDF, 196 Кб, Файл опубликован: 21 сен 2011This application report provides a checklist for reviewing a switching charger schematic and explains each item in the list.
Datasheets
Sample &Buy ProductFolder Support &Community Tools &Software TechnicalDocuments bq24735SLUSAK9B – SEPTEMBER 2011 – REVISED APRIL 2015 bq24735 1-to 4-Cell Li+ Battery SMBus Charge Controller for Supporting TurboBoost Mode With N-Channel Power MOSFET Selector1 Features 2 Applications 1 Adapter and Battery Provide Power to SystemTogether to Support IntelВ CPU Turbo BoostModeSMBus Host-Controlled NMOS-NMOSSynchronous Buck Converter With Programmable615-, 750-, and 885-kHz Switching FrequenciesAutomatic N-Channel MOSFET Selection ofSystem Power Source From Adapter or BatteryDriven by Internal Charge PumpsEnhanced Safety Features for OvervoltageProtection, Overcurrent Protection, Battery,Inductor and MOSFET Short-Circuit ProtectionProgrammable Input Current, Charge Voltage,Charge Current Limits– В±0.5% Charge Voltage Accuracy up to 19.2 V …
Параметры
| Parameters / Models | BQ24715RGRR | BQ24715RGRT | HPA02277RGRR |
|---|---|---|---|
| Absolute Vin (safety rating)(Max)(, В | 28 | 28 | 28 |
| Battery Charge Voltage(Max), В | 14.5 | 14.5 | 14.5 |
| Battery Charge Voltage(Min), В | 4.096 | 4.096 | 4.096 |
| Cell Chemistry | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer |
| Charge Current(Max), A | 8 | 8 | 8 |
| Control Interface | SMBus | SMBus | SMBus |
| Control Topology | Switch-Mode Buck | Switch-Mode Buck | Switch-Mode Buck |
| Number of Series Cells | 2,3 | 2,3 | 2,3 |
| Operating Vin(Max), В | 24 | 24 | 24 |
| Operating Vin(Min), В | 6 | 6 | 6 |
| Package Group | VQFN | VQFN | VQFN |
| Package Size: mm2:W x L, PKG | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) |
| Special Features | Integrated LDO,Vin DPM (OK for Solar Power Source) | Integrated LDO,Vin DPM (OK for Solar Power Source) | Integrated LDO,Vin DPM (OK for Solar Power Source) |
| USB Feature | N/A | N/A | N/A |
Datasheets
Not Recommended for New Designs bq24725www.ti.com SLUS702A – JULY 2010 – REVISED NOVEMBER 2010 2-4 Cell Li+ Battery SMBus Charge Controller with N-Channel Power MOSFET Selectorand Advanced Circuit ProtectionCheck for Samples: bq24725 FEATURES 1 APPLICATIONS Portable Notebook Computers, UMPC, UltraThin Notebook, and NetbookPersonal Digital AssistantHandheld TerminalIndustrial and Medical EquipmentPortable Equipment BTST REGN 20 19 18 17 16 ACN 1 15 LODRV ACP 2 14 GND CMSRC 3 13 SRP ACDRV 4 12 SRN ACOK 5 11 BATDRV bq24725 6 7 8 9 10 ILIM The bq24725 charges two, three or four series Li+cells, and is available in a 20-pin, 3.5 x 3.5 mm2 QFNpackage. SCL The bq24725 uses internal input current register orexternal ILIM pin to throttle down PWM modulation toreduce the charge current. HIDRV SMBus controlled input current, charge current, andcharge voltage DACs allow for high regulationaccuracies that can be programmed by the systempower management micro-controller. SDA The bq24725 uses two charge pumps to separatelydrive n-channel MOSFETs (ACFET, RBFET andBATFET) for automatic system power sourceselection. PHASE The bq24725 is a high-efficiency, synchronousbattery charger, offering low component count forspace-constraint, multi-chemistry battery chargingapplications. IOUT DESCRIPTION VCC SMBus Host-Controlled NMOS-NMOSSynchronous Buck Converter withProgrammable 615kHz, 750kHz, and 885kHz …
Параметры
| Parameters / Models | BQ24725ARGRR | BQ24725ARGRT | HPA01163RGRR |
|---|---|---|---|
| Absolute Vin (safety rating)(Max)(, В | 30 | 30 | 30 |
| Battery Charge Voltage(Max), В | 19.2 | 19.2 | 19.2 |
| Battery Charge Voltage(Min), В | 1.024 | 1.024 | 1.024 |
| Cell Chemistry | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer |
| Charge Current(Max), A | 8 | 8 | 8 |
| Control Interface | SMBus | SMBus | SMBus |
| Control Topology | Switch-Mode Buck | Switch-Mode Buck | Switch-Mode Buck |
| Number of Series Cells | 1,2,3,4 | 1,2,3,4 | 1,2,3,4 |
| Operating Vin(Max), В | 24 | 24 | 24 |
| Operating Vin(Min), В | 4.5 | 4.5 | 4.5 |
| Package Group | VQFN | VQFN | VQFN |
| Package Size: mm2:W x L, PKG | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) |
| Special Features | Integrated FET,Power Path | Integrated FET,Power Path | Integrated FET,Power Path |
| USB Feature | N/A | N/A | N/A |
Параметры
| Parameters / Models | BQ24770RUYR | BQ24770RUYT |
|---|---|---|
| Absolute Vin (safety rating)(Max)(, В | 30 | 30 |
| Battery Charge Voltage(Max), В | 19.2 | 19.2 |
| Battery Charge Voltage(Min), В | 1.024 | 1.024 |
| Cell Chemistry | Li-Ion/Li-Polymer,LiFePO4 | Li-Ion/Li-Polymer,LiFePO4 |
| Charge Current(Max), A | 8 | 8 |
| Control Interface | SMBus | SMBus |
| Control Topology | Switch-Mode Buck | Switch-Mode Buck |
| Number of Series Cells | 1,2,3,4 | 1,2,3,4 |
| Operating Vin(Max), В | 24 | 24 |
| Operating Vin(Min), В | 4.5 | 4.5 |
| Package Group | WQFN | WQFN |
| Package Size: mm2:W x L, PKG | 28WQFN: 16 mm2: 4 x 4(WQFN) | 28WQFN: 16 mm2: 4 x 4(WQFN) |
| Special Features | Power Path | Power Path |
| USB Feature | N/A | N/A |
Datasheets
Sample &Buy ProductFolder Support &Community Tools &Software TechnicalDocuments bq24715SLUSBD1B – MARCH 2013 – REVISED SEPTEMBER 2016 bq24715 2-3 Cell NVDC-1 Battery Charger Controllerwith Ultra-Fast Transient Response and High Light-Load Efficiency1 Features 3 Description The bq24715 is a NVDC-1 synchronous batterycharge controller with low quiescent current, high lightload efficiency for 2S or 3S Li-ion battery chargingapplications, offering low component count. 1 6-24V Input SMBus NVDC-1 2-3S BatteryCharger ControllerSystem Instant-on Operation with No Battery orDeeply Discharged BatteryUltra-Fast Transient Response of 100 ВµsUltra-Low Quiescent Current of 500 ВµA and HighPFM Light Load Efficiency 80% at 20mA load toMeet Energy Star and ErP Lot6Switching Frequency: 600kHz/800kHz/1MHzProgrammable System/Charge Voltage (16mV/step), Input/Charge Current (64 mA/step) withHigh Accuracy …
Параметры
| Parameters / Models | BQ24735RGRR | BQ24735RGRT | HPA02196RGRR |
|---|---|---|---|
| Absolute Vin (safety rating)(Max)(, В | 30 | 30 | 30 |
| Battery Charge Voltage(Max), В | 19.2 | 19.2 | 19.2 |
| Battery Charge Voltage(Min), В | 1.024 | 1.024 | 1.024 |
| Cell Chemistry | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer | Li-Ion/Li-Polymer |
| Charge Current(Max), A | 8 | 8 | 8 |
| Control Interface | SMBus | SMBus | SMBus |
| Control Topology | Switch-Mode Buck | Switch-Mode Buck | Switch-Mode Buck |
| Number of Series Cells | 1,2,3,4 | 1,2,3,4 | 1,2,3,4 |
| Operating Vin(Max), В | 24 | 24 | 24 |
| Operating Vin(Min), В | 4.5 | 4.5 | 4.5 |
| Package Group | VQFN | VQFN | VQFN |
| Package Size: mm2:W x L, PKG | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) | 20VQFN: 12 mm2: 3.5 x 3.5(VQFN) |
| Special Features | Integrated FET | Integrated FET | Integrated FET |
| USB Feature | N/A | N/A | N/A |
