전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)

LM2831

활성

고주파 1.5A 부하 - 스텝 다운 DC-DC 레귤레이터

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TPS628502 활성 SOT583 패키지의 2.7V~6V, 2A 조정 가능 주파수 스텝다운 컨버터 This product has higher efficiency, lower EMI and a smaller solution size.

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 3 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 550 Switching frequency (max) (kHz) 3000 Features Enable, Light Load Efficiency, Light load efficiency Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.5 Iq (typ) (µA) 2800 Duty cycle (max) (%) 94
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 3 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 550 Switching frequency (max) (kHz) 3000 Features Enable, Light Load Efficiency, Light load efficiency Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.5 Iq (typ) (µA) 2800 Duty cycle (max) (%) 94
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 WSON (NGG) 6 9 mm² 3 x 3
  • Space-Saving SOT-23 Package
  • Input Voltage Range of 3 V to 5.5 V
  • Output Voltage Range of 0.6 V to 4.5 V
  • 1.5-A Output Current
  • High Switching Frequencie
    • 1.6 MHz (LM2831X)
    • 0.55 MHz (LM2831Y)
    • 3 MHz (LM2831Z)
  • 130-mΩ PMOS Switch
  • 0.6-V, 2% Internal Voltage Reference
  • Internal Soft Start
  • Current Mode, PWM Operation
  • Thermal Shutdown
  • Overvoltage Protection
  • Space-Saving SOT-23 Package
  • Input Voltage Range of 3 V to 5.5 V
  • Output Voltage Range of 0.6 V to 4.5 V
  • 1.5-A Output Current
  • High Switching Frequencie
    • 1.6 MHz (LM2831X)
    • 0.55 MHz (LM2831Y)
    • 3 MHz (LM2831Z)
  • 130-mΩ PMOS Switch
  • 0.6-V, 2% Internal Voltage Reference
  • Internal Soft Start
  • Current Mode, PWM Operation
  • Thermal Shutdown
  • Overvoltage Protection

The LM2831 regulator is a monolithic, high-frequency, PWM step-down DC-DC converter in a 5-pin SOT-23 and a 6-Pin WSON package. The LM2831 provides all the active functions to provide local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2831 is easy to use. The ability to drive 1.5-A loads with an internal 130-mΩ PMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30 ns, thus supporting exceptionally high frequency conversion over the entire 3 V to 5.5 V input operating range, down to the minimum output voltage of 0.6 V. Switching frequency is internally set to 550 kHz, 1.6 MHz, or 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is high, efficiencies of up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2831 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

The LM2831 regulator is a monolithic, high-frequency, PWM step-down DC-DC converter in a 5-pin SOT-23 and a 6-Pin WSON package. The LM2831 provides all the active functions to provide local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2831 is easy to use. The ability to drive 1.5-A loads with an internal 130-mΩ PMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30 ns, thus supporting exceptionally high frequency conversion over the entire 3 V to 5.5 V input operating range, down to the minimum output voltage of 0.6 V. Switching frequency is internally set to 550 kHz, 1.6 MHz, or 3 MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is high, efficiencies of up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LM2831 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

다운로드 스크립트와 함께 비디오 보기 동영상

관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
LM2830 활성 고주파 1A 스텝다운 DC/DC 컨버터 Lower Iout (1 A).
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LM2832 활성 고주파 2.0A 부하 - 스텝다운 DC-DC 레귤레이터 Higher Iout (2 A) and available in 8-Pin eMSOP-PowerPAD package.

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
2개 모두 보기
유형 직함 날짜
* Data sheet LM2831 High-Frequency 1.5-A Load — Step-Down DC-DC Regulator datasheet (Rev. D) PDF | HTML 2015/09/30
EVM User's guide AN-1550 LM2831X 6-Pin LLP Demo Board (Rev. A) 2013/04/25

설계 및 개발

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

시뮬레이션 모델

LM2831X PSpice Transient Model

SNVM187.ZIP (192 KB) - PSpice Model
시뮬레이션 모델

LM2831X Unencrypted PSpice Transient Model

SNVM853.ZIP (2 KB) - PSpice Model
시뮬레이션 모델

LM2831Y PSpice Transient Model

SNVM188.ZIP (192 KB) - PSpice Model
시뮬레이션 모델

LM2831Y Unencrypted PSpice Transient Model

SNVM852.ZIP (2 KB) - PSpice Model
시뮬레이션 모델

LM2831Z PSpice Transient Model

SNVM189.ZIP (189 KB) - PSpice Model
시뮬레이션 모델

LM2831Z Unencrypted PSpice Transient Model

SNVM851.ZIP (2 KB) - PSpice Model
패키지 CAD 기호, 풋프린트 및 3D 모델
SOT-23 (DBV) 5 Ultra Librarian
WSON (NGG) 6 Ultra Librarian

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

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

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

동영상