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부품번호 | L4962EH 기능 |
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기능 | 1.5A POWER SWITCHING REGULATOR | ||
제조업체 | STMicroelectronics | ||
로고 | |||
전체 16 페이지수
® L4962
1.5A POWER SWITCHING REGULATOR
1.5A OUTPUT CURRENT
5.1V TO 40V OUTPUT VOLTAGE RANGE
PRECISE (± 2%) ON-CHIP REFERENCE
HIGH SWITCHING FREQUENCY
VERY HIGH EFFICIENCY (UP TO 90%)
VERY FEW EXTERNAL COMPONENTS
SOFT START
INTERNAL LIMITING CURRENT
THERMAL SHUTDOWN
DESCRIPTION
The L4962 is a monolithic power switching regula-
tor delivering 1.5A at a voltage variable from 5V to
40V in step down configuration.
Features of the device include current limiting, soft
start, thermal protection and 0 to 100% duty cycle
for continuous operating mode.
POW ERDIP
(12 + 2 + 2)
HEPTAWATT
ORDERING NUMBERS : L4962/A (12 + 2 + 2 Powerdip)
L4962E/A (Heptawatt
Vertical)
L4962EH/A (Horizontal
Heptawatt)
The L4962 is mountedin a 16-leadPowerdipplastic
package and Heptawatt packageand requires very
few external components.
Efficient operation at switching frequencies up to
150KHz allows a reduction in the size and cost of
external filter components.
BLOCK DIAGRAM
June 2000
Pin X = Powerdip
Pin (X) = Heptawatt
1/16
L4962
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Conditions
DYNAMIC CHARACTERISTICS (cont’d)
f Switching frequency
∆ f Voltage stability of
∆ Vi switching frequency
Vi = 9V to 46V
∆ f Temperature stability of
∆ Tj switching frequency
Tj = 0°C to 125°C
fmax Maximum operating
switching frequency
Vo = Vref
Tsd Thermal shutdown
junction temperature
Io = 1A
DC CHARACTERISTICS
I7Q Quiescent drain current
-I2L Output leakage current
100% duty cycle
pins 2 and 14 open
0% duty cycle
0% duty cycle
Vi = 46V
SOFT START
I15SO Source current
I15SI Sink current
ERROR AMPLIFIER
V11H High level output voltage
V11L Low level output voltage
I11SI Sink output current
-I11SO Source output current
I10 Input bias current
Gv DC open loop gain
V10 = 4.7V
V10 = 5.3V
V10 = 5.3V
V10 = 4.7V
V10 = 5.2V
V11 = 1V to 3V
I11 = 100µA
I11 = 100µA
OSCILLATOR
-I14 Oscillator source current
Min. Typ. Max. Unit
85 100 115 KHz
0.5 %
1%
120 150
150
KHz
°C
30 40 mA
15 20 mA
1 mA
100 140 180
50 70 120
µA
µA
3.5
0.5
100 150
100 150
2 10
46 55
V
V
µA
µA
µA
dB
5 mA
4/16
4페이지 L4962
Figure 7. Quiescent drain Figure 8. Reference voltage
current vs. junction te m- (pin 10) vs. Vi rdip) vs. Vi
perature (100% duty cycle)
Figure 9. Reference voltage
(pin 10 ) vs. junction tem-
perature
Figure 10. Open loop fre- Figure 11. Switching fre-
quency and phase re- sponse quency vs. input voltage
of error amplifier
Figure 12. Switching fre-
quency vs. junction tem-
perature
Figure 13. Switching fre- Figure 14. Line transient Figure 15. Load transient
quency vs. R2 (see test circuit) response
response
7/16
7페이지 | |||
구 성 | 총 16 페이지수 | ||
다운로드 | [ L4962EH.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 |
L4962E | 1.5A POWER SWITCHING REGULATOR | STMicroelectronics |
L4962EH | 1.5A POWER SWITCHING REGULATOR | STMicroelectronics |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |