홈 배터리 관리 IC 배터리 충전기 IC
홈
배터리 관리 IC
배터리 충전기 IC

BQ24257

새 설계에 권장하지 않음

2A 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기

지금 주문
데이터시트
BQ24257은(는) 새 설계에 권장하지 않습니다
이 제품은 이전 설계를 지원하기 위해 계속 생산 중이지만 새로운 설계에 사용하는 것은 권장하지 않습니다. 다음 대안 중 하나를 고려하십시오.
open-in-new 대안 비교
비교 대상 장치와 유사한 기능
BQ25600 활성 WCSP에 전원 경로 및 OTG를 지원하는 I2C 1셀 3A 벅 배터리 충전기 This product is 3A, 1S I2C switching charger with OTG support and WCSP Package
BQ25601 활성 전원 경로 및 PSEL을 지원하는 I2C 1셀 3A 벅 배터리 충전기 This product is 3A, 1S I2C switching charger with OTG support and WQFN Package

BQ24257

새 설계에 권장하지 않음
데이터시트 지금 주문

제품 상세 정보

Number of series cells 1 Charge current (max) (A) 2 Vin (max) (V) 6.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface I2C, Standalone (RC-Settable) Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 2 Vin (max) (V) 6.5 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.44 Absolute max Vin (max) (V) 20 Control topology Switch-Mode Buck Control interface I2C, Standalone (RC-Settable) Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFF) 30 5.71999999999999912 mm² 2.2 x 2.5999999999999996 VQFN (RGE) 24 16 mm² 4 x 4
  • High-efficiency Switch-mode Charger with Integrated Current Sense Resistor
  • BC1.2 D+, D– Detection with Dead Battery Provision (DBP) Pin-to-Sync with External USB-PHI
  • USB Charging Compliant
  • Selectable Input Current Limit of 100 mA,
    150 mA, 500 mA, 900 mA. 1.5 A, and 2 A
  • Watchdog Timer with Disable Bit
  • Integrated 4.9-V, 50-mA LDO
  • Complete System Level Protection
    • Input UVLO, Input Overvoltage Protection (OVP), Battery OVP, Sleep Mode, VIN_DPM
    • Input Current Limit
    • Charge Current Limit
    • Thermal Regulation and Thermal Shutdown
    • Voltage Based, JEITA Compatible NTC Monitoring Input
    • Safety Timer
  • In Host Mode, Programmable VBATREG, ICHG, ILIM, VIN_DPM, VOVP and safety timer in host mode (after I2C Communication and Before Watchdog Timer Times Out)
  • In Standalone Mode, Resistor Programmable ICHG, ILIM, and VIN_DPM in Standalone Mode (before I2C Communication and After Watchdog Timer Times Out)
  • 20-V Maximum Input Voltage Rating
  • 10.5-V Maximum Operating Input Voltage
  • Low RDS(on) Integrated Sense Resistor for up to 2-A Charging Rate
  • Open Drain Status Outputs
  • Synchronous Fixed-frequency PWM Controller Operating at 3 MHz for Small Inductor Support
  • Robust Battery Detection Algorithm
  • Charge Time Optimizer for Improved Charge Times at any Given Charge Current
  • High-efficiency Switch-mode Charger with Integrated Current Sense Resistor
  • BC1.2 D+, D– Detection with Dead Battery Provision (DBP) Pin-to-Sync with External USB-PHI
  • USB Charging Compliant
  • Selectable Input Current Limit of 100 mA,
    150 mA, 500 mA, 900 mA. 1.5 A, and 2 A
  • Watchdog Timer with Disable Bit
  • Integrated 4.9-V, 50-mA LDO
  • Complete System Level Protection
    • Input UVLO, Input Overvoltage Protection (OVP), Battery OVP, Sleep Mode, VIN_DPM
    • Input Current Limit
    • Charge Current Limit
    • Thermal Regulation and Thermal Shutdown
    • Voltage Based, JEITA Compatible NTC Monitoring Input
    • Safety Timer
  • In Host Mode, Programmable VBATREG, ICHG, ILIM, VIN_DPM, VOVP and safety timer in host mode (after I2C Communication and Before Watchdog Timer Times Out)
  • In Standalone Mode, Resistor Programmable ICHG, ILIM, and VIN_DPM in Standalone Mode (before I2C Communication and After Watchdog Timer Times Out)
  • 20-V Maximum Input Voltage Rating
  • 10.5-V Maximum Operating Input Voltage
  • Low RDS(on) Integrated Sense Resistor for up to 2-A Charging Rate
  • Open Drain Status Outputs
  • Synchronous Fixed-frequency PWM Controller Operating at 3 MHz for Small Inductor Support
  • Robust Battery Detection Algorithm
  • Charge Time Optimizer for Improved Charge Times at any Given Charge Current

The bq2425x is a highly integrated single-cell Li-Ion battery charger with integrated current sense resistor targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that operates from either a USB port or AC wall adapter for a versatile solution. BC1.2 compatible D+, D- detection allows for recognition of CDP, DCP, SDP, and non-standard USB adapters. The use of an accessory dead battery provision (DBP) pin allows for the system to sync a dead battery state in order to enable or disable the BC1.2 detection in the event of an external USB-PHI.

The bq24257 has two modes of operation: 1) I2C mode, and 2) Standalone mode. In I2C mode, the host can adjust the charge parameters and monitor the status of the charger operation. In Standalone mode, the external resistor sets the input current limit, charge current limit, and the input DPM level. This mode also serves as the default settings when a DCP adapter is present. The bq24257 enters host mode while the I2C registers are accessed and the watchdog timer has not expired (if enabled).

For all available packages, see the orderable addendum at the end of the datasheet.

All trademarks are the property of their respective owners.

The bq24258 has only one mode of operation which is the Standalone. In this mode, the external resistor sets the input current limit, charge current limit, and the input DPM level. This mode also serves as the default settings when a DCP adapter is present. The EN1, EN2, and EN3 pin are available in the bq24258 spin to support USB 3.0 compliance.

The battery is charged in four phases: trickle charge, pre-charge, constant current and constant voltage. In all charge phases, an internal control loop monitors the device junction temperature and reduces the charge current if the internal temperature threshold is exceeded. Additionally, a voltage-based, JEITA compatible battery pack thermistor monitoring input (TS) is included that monitors battery temperature for safe charging.

The bq2425x is a highly integrated single-cell Li-Ion battery charger with integrated current sense resistor targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that operates from either a USB port or AC wall adapter for a versatile solution. BC1.2 compatible D+, D- detection allows for recognition of CDP, DCP, SDP, and non-standard USB adapters. The use of an accessory dead battery provision (DBP) pin allows for the system to sync a dead battery state in order to enable or disable the BC1.2 detection in the event of an external USB-PHI.

The bq24257 has two modes of operation: 1) I2C mode, and 2) Standalone mode. In I2C mode, the host can adjust the charge parameters and monitor the status of the charger operation. In Standalone mode, the external resistor sets the input current limit, charge current limit, and the input DPM level. This mode also serves as the default settings when a DCP adapter is present. The bq24257 enters host mode while the I2C registers are accessed and the watchdog timer has not expired (if enabled).

For all available packages, see the orderable addendum at the end of the datasheet.

All trademarks are the property of their respective owners.

The bq24258 has only one mode of operation which is the Standalone. In this mode, the external resistor sets the input current limit, charge current limit, and the input DPM level. This mode also serves as the default settings when a DCP adapter is present. The EN1, EN2, and EN3 pin are available in the bq24258 spin to support USB 3.0 compliance.

The battery is charged in four phases: trickle charge, pre-charge, constant current and constant voltage. In all charge phases, an internal control loop monitors the device junction temperature and reduces the charge current if the internal temperature threshold is exceeded. Additionally, a voltage-based, JEITA compatible battery pack thermistor monitoring input (TS) is included that monitors battery temperature for safe charging.
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기술 문서

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모두 보기6
유형 직함 날짜
* Data sheet bq24257, bq24258 2-A Single Input I2C, Standalone Switch-Mode Li-Ion/LiFePO4 Battery Charger with Integrated Current-Sense Resistor datasheet (Rev. C) PDF | HTML 2013/08/30
Analog Design Journal Battery-charging considerations for high-power portable devices 2014/04/11
Application note Building your own Battery Simulator 2013/10/14
Application note Using bq2425x’s DPM Feature for Solar Panel Applications 2013/07/31
Application note Selecting the Best bq2425x Single Cell I2C, Standalone Switch-Mode Battery Charg 2013/06/17
User guide bq24257EVM-150, Single-Cell Li-Ion Switch-Mode Charger (Rev. A) 2013/04/03

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

드라이버 또는 라이브러리

BQ24257SW-LINUX — BQ2425x용 Linux 드라이버

The Linux driver supports the BQ2425x switch-mode Li-ion battery charger. The Linux driver supports communication through the I2C bus and interfaces with the power supply sub-system.

 

Linux mainline status

Available in Linux mainline: Yes
Available through git.ti.com: N/A 

Linux source files

The files (...)

옵션 보기
지원 소프트웨어

SLUC435 — bq24250EVM Software

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
배터리 충전기 IC
BQ24250 — SYSOFF 모드 1uA 및 TS 비활성화 기능을 갖춘 1셀, 2A, I2C 제어 벅 배터리 충전기 BQ24251 — 2A 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기 BQ24257 — 2A 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기
하드웨어 개발
평가 보드
BQ24250EVM-150 — BQ24250EVM-150 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기 평가 모듈 BQ24251EVM-150 — BQ24251EVM-150 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기 평가 모듈
다운로드
계산 툴

SLUC436 — Thermal TS bq2425x Calculator Tool

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
배터리 충전기 IC
BQ24250 — SYSOFF 모드 1uA 및 TS 비활성화 기능을 갖춘 1셀, 2A, I2C 제어 벅 배터리 충전기 BQ24251 — 2A 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기 BQ24257 — 2A 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기
하드웨어 개발
평가 보드
BQ24250EVM-150 — BQ24250EVM-150 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기 평가 모듈 BQ24251EVM-150 — BQ24251EVM-150 단일 입력 I2C/독립형 스위치 모드 리튬 이온 배터리 충전기 평가 모듈
다운로드
패키지 핀 다운로드
DSBGA (YFF) 30 옵션 보기
VQFN (RGE) 24 옵션 보기
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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포럼 주제 모두 보기(영문)

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