MM5450BV TR Micrel Inc, MM5450BV TR Datasheet

IC DRIVER DISPLAY LED 44PLCC

MM5450BV TR

Manufacturer Part Number
MM5450BV TR
Description
IC DRIVER DISPLAY LED 44PLCC
Manufacturer
Micrel Inc
Datasheet

Specifications of MM5450BV TR

Display Type
LED
Interface
Serial
Current - Supply
10mA
Voltage - Supply
4.75 V ~ 11 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
44-LCC (J-Lead)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Configuration
-
Digits Or Characters
-
Other names
MM5450BVTR
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.
Applications
• Industrial control indicator
• Relay driver
• Digital clock, thermometer, counter, voltmeter
• Instrumentation readouts
____________________________________________________________________________________________________________
Block Diagram
SuperSwitcher and Super ßeta PNP are trademarks of Micrel, Inc.
February 2006
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
BRIGHTNESS
DATA ENABLE/OUT 35
CONTROL
SERIAL DATA
(See Note 1)
CLOCK
19
23
22
21
Note 1: Pin 23 is Data Enable in MM5450
Pin 23 is Output 35 in MM5451
VDD
20
Figure 1.
OUT 34
35 OUTPUT BUFFERS
24
35-BIT SHIFT
35 LATCHES
REGISTER
Features
• Continuous brightness control
• Serial data input
• No load signal requirement
• Enable (on MM5450)
• Wide power supply operation
• TTL compatibility
• 34 or 35 outputs, 15mA capability
• Alphanumeric capability
Ordering Information
Standard
MM5450BN
MM5451BN
MM5450BV
MM5451BV
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Part Number
OUT 1
18
RESET
Pb-Free
MM5450YN
MM5451YN
MM5450YV
MM5451YV
LOAD
LED Display Driver
MM5450/5451
1
–40°C to+85°C
–40°C to+85°C
–40°C to+85°C
–40°C to+85°C
Temp. Range
RESET
(only available
in die form)
Junction
(408) 955-1690
M9999-021606
40-pin PDIP
40-pin PDIP
44-pin PLCC
44-pin PLCC
Package

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MM5450BV TR Summary of contents

Page 1

... DATA ENABLE/OUT 35 (See Note 1) SERIAL DATA CLOCK SuperSwitcher and Super ßeta PNP are trademarks of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( February 2006 Features • Continuous brightness control • Serial data input • ...

Page 2

Micrel, Inc. Connection Diagram: Die Connection Diagram: Dual-in-line Package OUTPUT BIT 17 2 OUTPUT BIT 16 3 OUTPUT BIT 15 4 OUTPUT BIT 14 5 OUTPUT BIT 13 6 OUTPUT BIT 12 7 OUTPUT BIT 11 8 ...

Page 3

Micrel, Inc. Connection Diagram: Plastic Leaded Chip Carrier February 2006 OUTPUT BIT 13 7 OUTPUT BIT 12 8 OUTPUT BIT 11 9 OUTPUT BIT 10 10 OUTPUT BIT ...

Page 4

Micrel, Inc. Absolute Maximum Ratings Voltage (any pin) ........................................V Power Dissipation +25°C........................................................................1W +85°C.................................................................560mW Junction Temperature (T ) ....................................... +150°C J Storage Temperature (T ).........................–65°C to +150°C S Lead Temperature (soldering, 10sec.) ..................... +300°C Electrical Characteristics 4.5V ≤ V ≤ 11V, ...

Page 5

Micrel, Inc. Functional Description The MM5450 and MM5451 were designed to drive either 4- or 5-digit alphanumeric LED displays with the added benefit of requiring minimal interface with the display or data source. Data is transferred serially via 2 signals; ...

Page 6

Micrel, Inc. February 2006 Figure 5. Figure 6. Input Data Format 6 MM5450/5451 M9999-021606 (408) 955-1690 ...

Page 7

Micrel, Inc. Typical Performance Characteristics Figure 7. Typical Applications 7V RAW DC LM317 > 240 – 5k LM324 + Figure 10. Typical Application of Constant Current Brightness Control February 2006 Figure ...

Page 8

Micrel, Inc. Typical Applications 3.0V LED DATA IN February 2006 LED DISPLAY MM5450 DISPLAY DRIVER ...

Page 9

Micrel, Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. ...

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