홈 전원 관리 멀티 채널 IC(PMIC)
홈
전원 관리
멀티 채널 IC(PMIC)

LP3921

활성

Boomer 오디오 증폭기가 통합된 배터리 충전기 관리 및 레귤레이터 유닛

지금 주문
데이터 시트

LP3921

활성
데이터 시트 지금 주문

제품 상세 정보

Regulated outputs (#) 7 Step-down DC/DC converter 0 Step-up DC/DC converter 0 LDO 7 Vin (min) (V) 3 Vin (max) (V) 5.5 Vout (min) (V) 1.5 Vout (max) (V) 3.3 Iout (max) (A) 0.3 Configurability Hardware configurable, Software configurable Features Comm control Rating Catalog Operating temperature range (°C) -40 to 85 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 2
Regulated outputs (#) 7 Step-down DC/DC converter 0 Step-up DC/DC converter 0 LDO 7 Vin (min) (V) 3 Vin (max) (V) 5.5 Vout (min) (V) 1.5 Vout (max) (V) 3.3 Iout (max) (A) 0.3 Configurability Hardware configurable, Software configurable Features Comm control Rating Catalog Operating temperature range (°C) -40 to 85 Step-down DC/DC controller 0 Step-up DC/DC controller 0 Iq (typ) (mA) 2
WQFN (RTV) 32 25 mm² 5 x 5
  • Charger
    • DC Adapter or USB Input
    • Thermally Regulated Charge Current
    • Under Voltage Lockout
    • 50 to 950 mA Programmable Charge Current
  • 3.0V to 5.5V Input Voltage Range
  • Thermal Shutdown
  • I2C-Compatible Interface for Controlling Charger, LDO Outputs and Enabling Audio Output
  • LDO's 7 Low-Noise LDO’s
    • 2 x 300 mA
    • 3 x 150 mA
    • 2 x 80 mA
    2% (typ.) Output Voltage Accuracy on LDO's
  • Audio
    • Fully Differential Amplification
    • Ability to Drive Capacitive Loads up to 100 pF
    • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Space-Efficient 32-pin 5 x 5 mm WQFN Package

All trademarks are the property of their respective owners.

  • Charger
    • DC Adapter or USB Input
    • Thermally Regulated Charge Current
    • Under Voltage Lockout
    • 50 to 950 mA Programmable Charge Current
  • 3.0V to 5.5V Input Voltage Range
  • Thermal Shutdown
  • I2C-Compatible Interface for Controlling Charger, LDO Outputs and Enabling Audio Output
  • LDO's 7 Low-Noise LDO’s
    • 2 x 300 mA
    • 3 x 150 mA
    • 2 x 80 mA
    2% (typ.) Output Voltage Accuracy on LDO's
  • Audio
    • Fully Differential Amplification
    • Ability to Drive Capacitive Loads up to 100 pF
    • No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
  • Space-Efficient 32-pin 5 x 5 mm WQFN Package

All trademarks are the property of their respective owners.

The LP3921 is a fully integrated charger and multi-regulator unit with a fully differential Boomer audio power amplifier designed for CDMA cellular phones. The LP3921 has a high-speed serial interface which allows for the integration and control of a Li-Ion battery charger, 7 low-noise low-dropout (LDO) voltage regulators and a Boomer audio amplifier.

The Li-Ion charger integrates a power FET, reverse current blocking diode, sense resistor with current monitor output, and requires only a few external components. Charging is thermally regulated to obtain the most efficient charging rate for a given ambient temperature.

LDO regulators provide high PSRR and low noise ideally suited for supplying power to both analog and digital loads.

The Boomer Audio Amplifier is capable of delivering 1.1 watts of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N). Boomer Audio Power Amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The Boomer Audio Amplifier does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption and part count is the primary requirement. The Boomer Audio Amplifier contains advanced pop & click circuitry which eliminates noises during turn-on and turn-off transitions.

The LP3921 is a fully integrated charger and multi-regulator unit with a fully differential Boomer audio power amplifier designed for CDMA cellular phones. The LP3921 has a high-speed serial interface which allows for the integration and control of a Li-Ion battery charger, 7 low-noise low-dropout (LDO) voltage regulators and a Boomer audio amplifier.

The Li-Ion charger integrates a power FET, reverse current blocking diode, sense resistor with current monitor output, and requires only a few external components. Charging is thermally regulated to obtain the most efficient charging rate for a given ambient temperature.

LDO regulators provide high PSRR and low noise ideally suited for supplying power to both analog and digital loads.

The Boomer Audio Amplifier is capable of delivering 1.1 watts of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N). Boomer Audio Power Amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The Boomer Audio Amplifier does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption and part count is the primary requirement. The Boomer Audio Amplifier contains advanced pop & click circuitry which eliminates noises during turn-on and turn-off transitions.
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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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1개 모두 보기
유형 직함 날짜
* Data sheet Battery Charger Management & Regulator Unit w/Integrated Boomer Audio Amplifier datasheet (Rev. A) 2013/05/03

설계 및 개발

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

패키지 핀 CAD 기호, 풋프린트 및 3D 모델
WQFN (RTV) 32 Ultra Librarian
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

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

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