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부품번호 | MM5451 기능 |
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기능 | LED Display Driver | ||
제조업체 | Microchip | ||
로고 | |||
전체 20 페이지수
MM5450/51
LED Display Driver
Features
• Continuous Brightness Control
• Serial Data Input
• No Load Signal Requirement
• Enable (MM5450 Only)
• Wide Power Supply Operation
• TTL Compatibility
• 34 or 35 Outputs, 15 mA Capability
• Alphanumeric Capability
Applications
• Industrial Control Indicator
• Relay Driver
• Digital Clock, Thermometer, Counter, Voltmeter
• Instrumentation Readouts
General Description
The MM5450 and MM5451 LED display drivers are
monolithic MOS IC’s fabricated in an N-Channel,
metal-gate process. The technology produces
low-threshold, enhancement-mode, and ion-implanted
depletion-mode devices.
A single pin controls the LED display brightness by
setting a reference current through a variable resistor
connected to the supply.
Block Diagram
BRIGHTNESS
CONTROL
OUT 34
VDD
20 24
OUT 1
18
19
35 OUTPUT BUFFERS
DATA ENABLE/OUT 35
(See Note 1)
SERIAL DATA
23
22
21
CLOCK
35 LATCHES
LOAD
35-BIT SHIFT
REGISTER
RESET
Note 1: Pin in Data Enable in MM5450
Pin in Output 25 in MM5451
RESET
(only available
1 in die form)
2016 Microchip Technology Inc.
DS20005651A-page 1
MM5450/51
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Voltage (Any Pin)................................................................................................................................... VSS to VSS + 12V
Power Dissipation (+25°C) ...........................................................................................................................................1W
Power Dissipation (+85°C) ...................................................................................................................................560 mW
Operating Ratings ‡
Supply Voltage (VDD – VSS) ..................................................................................................................... +4.75V to +11V
† Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice: The device is not guaranteed to function outside its operating ratings.
DS20005651A-page 4
2016 Microchip Technology Inc.
4페이지 MM5450/51
2.0 TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
110
100 VOUT = 1V
TA = 85°C
90
80
70 VOUT = 1.5V
60
VOUT = 2V
50
40
30
20
10
0
0 5 10 15 20 25 30 35
NUMBER OF SEGMENTS
FIGURE 2-1:
Output Current vs. Number
of Segments.
2.5
TA = 85°C
TJ = 150°C (MAX)
2.0
20 SEGM
1.5
1.0
0.5
0
0 4 8 12 16 20 24 28
ILED (mA)
FIGURE 2-2:
Output Voltage vs. LED
Current.
1.0
34 SEGMENTS
VOUT = 1V
15 mA/SEGMENT
0.8
0.6
SAFE OPERATING
AREA
0.4
0.2
0
0
FIGURE 2-3:
Temperature.
20 40 60 80 100
TEMPERATURE (°C)
Power Dissipation vs.
2016 Microchip Technology Inc.
DS20005651A-page 7
7페이지 | |||
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다운로드 | [ MM5451.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 |
MM5450 | LED Display Driver | Microchip |
MM5450 | LED Display Drivers | National |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |