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부품번호 | BL8529 기능 |
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기능 | 3A 1.5MHz 5.5V Synchronous Buck Converter | ||
제조업체 | SHANGHAI BELLING | ||
로고 | |||
BL8529
3A 1.5MHz 5.5V Synchronous Buck Converter
DESCRIPTION
The BL8529 is a high efficiency synchronous, buck
DC/DC converter. Its input voltage range is from
2.6V to 6V and provides an adjustable regulated
output voltage from 0.8V to 5.5V while delivering
up to 3A of output current.
The internal synchronous switches increase
efficiency and eliminate the need for an external
Schottky diode. The switching frequency is set by
an external resistor or can be synchronized to an
external clock. The 100% duty cycle provides low
dropout operation extending battery life in
portable systems.
The BL8529 is operated in PFM/PWM auto-switch
mode which enhance the efficiency at light-load.
The BL8529 is available in the DFN2x2-8L and
DFN3x3-10L package
FEATURES
• Adjustable Output Voltage, Vfb=0.8V
• Maximum output current is 3A
• Range of operation input voltage: Max 6V
• Standby current: 0.5mA (typ.)
• Line regulation: 0.1%/V (typ.)
• Load regulation: 10mV (typ.)
• High efficiency, up to 96%
• Environment Temperature: -20°C~85°C
APPLICATIONS
• Power Management for 3G modem
• 3W LED driver from Li-ion battery
• LCD Monitor and LCD TV
• DVD Decode Board
• ADSL Modem
• Post Regulators for Switching Supplies
TYPICAL APPLICATION
BL8529
PIN OUT & MARKING
1.EN_
8. COMP
2. GND
7. FB
3. LX 6. VDD
4. PGND
5. PVDD
DFN2x2-8L
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TYPICAL PERFORMANCE CHARACTERISTICS cont’
BL8529
Power On & Soft Start
Load Transient Response
CH1: Input Voltage
CH2: Output Voltage
CH3: Switching Wave
CH4: Inductor Current
CH2: Output Ripple
CH1: Load Current
DETAILED DESCRIPTION
BL8529 is a 3A synchronous buck, with frequency adjusted by Ren_. It can achieve conversion efficiency up to 95%. It
also support 100% duty cycle which will maximize the battery usage. Only a inductor and a few R & C need for peripheral.
The PCB size can be very small
Please note that EN_ pin has to be pull high if one wants to shutdown the chip. And release it (with a Ren_ connected to
GND) to have it work. One can also switch off BL8529 by connect enable signal with at least 1mA driving capability to
VDD pin (pin 6 of DFN2x2 and pin 8 of DFN3x3 package).
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다운로드 | [ BL8529.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
BL8521 | 3A Synchronous Buck Converter | SHANGHAI BELLING |
BL8523 | PWM/PFM Step-down DC-DC Controller | SHANGHAI BELLING |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |