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부품번호 | 34063 기능 |
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기능 | monolithic control circuit containing the primary functions required | ||
제조업체 | Estek Electronics | ||
로고 | |||
전체 7 페이지수
34063
Description
The MC34063A Series is a monolithic control circuit containing the primary functions required for DC-to-DC converters.
These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator
with an active current limit circuit, driver and high current output switch. This series was specifically designed to be
incwowrpwo.drataesdheinetS4ute.cpo-mDown and Step-Up and Voltage-Inverting applications with a minimum number of external
components.
Features
• Operation from 3.0 V to 40 V Input
• Low Standby Current
• Current Limiting
• Output Switch Current to 1.5 A
• Output Voltage Adjustable
• Frequency Operation to 100 kHz
• Precision 2% Reference
Plastic Package
Pin Connections
Internal Block Digram
Driver 8
Collector
Ipk 7
Sense
VCC
Comparator
Inverting
Input
6
5
SQ
R
1 Switch
Collector
Q2
Q1
Ipk
Oscillator
CT
Comparator
100
1.25 V
Reference
2 Switch
Emitter
3 Timing
Capacitor
4 Gnd
BEIJING ESTEK ELECTRONICS CO.,LTD
1
Typical Applications Circuit
www.datasheet4u.com
34063
Figure 1. Step-Up Converte .r
Note: R to 0 for constant Vin
Figure 2a. External NPN Switch.
Figure 2b. External NPN Saturated Switch.
Figure 2. External Current Boost Connections for I eak Greater than
P 1.5 .A
BEIJING ESTEK ELECTRONICS CO.,LTD
4
4페이지 34063
Design Formula Table
Calculation
ton/toff
www.datasheet4u.com
Step-Up
+out −
V inV
−
(min)
Vsat
inV
(ton+toff)max
CT
lpk(switch)
RSC
L(min)
CO
1
f4.0 x 10-5 ton
2
tI
(max)
on
+ 1
0.3/lpk(switch)
V −in sat
I Vpk ( switch)
×ton
(max)
9 I out ton
Vripple( pp )
Step-Down
+ VF
−V −in (min)
sat
V Vout
1
f4.0x10-5 ton
2I out (max)
0.3/lpk(switch)
Vin
(min)
I
pk
V sat
( switch
)
Vout
−
× on (max)
I pk ( switch )
+
(
t
8Vripple
(
pp
t
)
)
Voltage-Inverting
out + VF
V
in
+ Vsat
V1
fmin
4.0 x 10-5
2I
ont
+ 1
0.3/lpk(switch)
VinI(mpkin()switcVh)sat
−
t on(max)
tI
9
Vripple( pp )
TERMS AND DEFINITIONS
Vsat - Saturation voltage of the output switch.
VF - Forward voltage drop of the output rectifier.
The following power supply characteristics must be chosen:
R
Vout = .1 2 5 11R+
Vin - Nominal input voltage.
Vout -
Desired output voltage,
Iout - Desired output current.
fmin - Minimum desired output switching frequency at the selected values of Vin and IO.
Vripple(p-p) –Desired peack-to-peack output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its
equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the
line and load regulation.
Ordering Information
O RDERING NUM BER
34063A
P ACK AGE
SOP-8 /DIP-8
M ARKING
MC34063A
Address :
6A06--6A07
Rm 6A07,Changyin Office Building ,No.88,Yong Ding Road,Hai Dian District ,Beijing
Postalcode:100039
Tel: 86-010-58895780 / 81 / 82 / 83 / 84 Fax : 010-58895793
Http://www.estek.com.cn
Email:[email protected]
REV No:01-060810
BEIJING ESTEK ELECTRONICS CO.,LTD
7
7페이지 | |||
구 성 | 총 7 페이지수 | ||
다운로드 | [ 34063.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 |
3406 | Diode ( Rectifier ) | American Microsemiconductor |
34063 | monolithic control circuit containing the primary functions required | Estek Electronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |