MM5451 datasheet(4/9 Pages) MICREL

4 / 9 page

Micrel, Inc.

MM5450/5451

February 2006

M9999-021606

(408) 955-1690

Absolute Maximum Ratings

Voltage (any pin) ........................................VSS to VSS + 12V

Power Dissipation

+25°C........................................................................1W

+85°C.................................................................560mW

Junction Temperature (TJ) ....................................... +150°C

Storage Temperature (TS).........................–65°C to +150°C

Lead Temperature (soldering, 10sec.)..................... +300°C

Operating Ratings

Supply voltage (VDD – VSS).......................... +4.75V to +11V

Ambient Temperature Range (TA) ............. –40°C to +85°C

Electrical Characteristics

4.5V ≤ VDD ≤ 11V, VSS = 0V; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, unless otherwise noted.

Symbol

Parameter

Condition

Min

Typ

Max

Units

Power Supply Current

–25°C to +85°C, excluding output loads

–40°C to +85°C, excluding output loads

8.5

Data Input Voltage

logic-0 level, ±10 µA input bias

logic-1 level, 4.75V ≤ VDD ≤ 5.25V

VDD > 5.25V

–0.3

2.2

VDD –2

0.8

VDD

Brightness Control Input Current

Note 2

0.75

segment off, VOUT = 3.0V

µA

Output Sink Current

segment on, VOUT = 1.8V, Note 3

brightness input = 0µA

brightness input = 100µA

brightness input = 750µA

2.0

2.7

µA

Brightness Control Input Voltage

input current = 750 µA

3.0

4.3

Output Matching

Note 1

±20

Clock Input Frequency

Notes 5, 6

500

kHz

Clock Input High Time

Notes 5, 6

950

Clock Input Low Time

Notes 5, 6

950

tDS

Data Input Setup Time

300

tDH

Data Input Hold Setup Time

300

tDES

Data Enable Input Setup Time

100

Reset Pad Current

die

µA

Notes:

1. Output matching is calculated as the percent variation (IMAX + IMIN) / 2.

2. With a fixed resistor on the brightness input pin, some variation in brightness will occur among devices.

3. See Figures 7, 8 and 9 for recommended operating conditions and limits. Absolute maximum for each output should be limited to 40mA.

4. VOUT should be regulated by user. See Figures 8 and 9 for allowable VOUT vs. IOUT operation.

5. AC input waveform specification for test purpose: tR ≤ 200ns, tF ≤ 20ns, f = 500kHz, 50% ±10% duty cycle.

6. Clock input rise and fall times must not exceed 300ns.

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