|
|
|
부품번호 | B3843 기능 |
|
|
기능 | (B3842 - B3845) Current Mode PWM Controller | ||
제조업체 | BL | ||
로고 | |||
www.DataSheet4U.com
Bay Linear
Inspire the Linear Power
Current Mode PWM Controller
B3842/43/44/45A&A1
Description
The Bay Linear B3842/43/44/45 are fixed frequency current-
mode PWM controller. These devices are designed for Off-
Line and DC-to-DC converter applications with minimum
external components. The B3842 family Feature a trimmed
oscillator for precise duty cycle control, a temperature
compensated reference, high gain error amplifier, current
sensing comparator, and a high current totempole output.
Ideally suited for driving a power N-Channel MOSFET’s. It is
low when is on off stage. Protection circuitry includes built in
under-voltage lockout and current limiting.
Major differences between members of these series are the
UVLO thresholds and maximum duty-cycle ranges. Typical
UVLO thresholds of 16V (on) and 10V (off) on the B3842 and
B3844 devices make them ideally suited to off-line
applications. These corresponding typical thresholds for the
B3842 and B3845 devcies are 8.4V (on) and 7.6V (off). The
B3842 and B3843 devcies can operate to duty cycles
approaching 100%. A duty-Cycle range of 0 to 50% is
obtained by the B3844 and B3845 by the addition of an
internal toggle flip-flop, which blanks the output off every
other clock cycle. It id available in 8 pin DIP and SOIC
packages.
Features
• Low Start-Up and Operating Current
• Maximum Duty Cycle
• Operating Frequency Up to 500KHz
• Under voltage Lockout with Hysteresis
• Available in 8 pin SOIC
• Similar to industry Standard UC3842
Applications
• Switching Power Supply
• Monitor
Pin Connection
8-Pin Surface Mount
COMP
1
8 REF
NC 2
7 VCC
ISENSE
RT/CT
36
45
Top View
OUTPUT
GND
Ordering Information
Devices
B384X(Z)M
B384X(Z)P
Z=A ON Semi
Package
Temp.
SO-8
0 °C to 70 °C
8-DIP
0 °C to 70 °C
Z=A1 Fairchild & Samsung
Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
Figure 1: Error Amp Configuration
B384X
Figure 2: Under-Voltage Lockout
3842 3843
Figure 3: Current Sense Circuit
Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
4페이지 B384X
Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
7페이지 | |||
구 성 | 총 10 페이지수 | ||
다운로드 | [ B3843.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
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 |
B3841 | SAW Components | EPCOS |
B3842 | (B3842 - B3845) Current Mode PWM Controller | BL |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |