MIC3223 Datasheet, PDF (4/24 Pages) Micrel Semiconductor – High Power Boost LED Driver with Integrated FET

Micrel, Inc.
MIC3223
Symbol
Parameter
Condition
Min Typ Max Units
DIM_IN =1µs C_{DIM_OUT} = 1.25nF
0.7
DIM MIN Minimum Dimming Pulse
DIM_OUT measured from 4V rising to 2.5
falling
0.5
1.3
µs
1.5
µs
DIM_OUT pull up resistance
R_DO
DIM_OUT Resistance High
I_{DIM_OUT} = +2mA
70
Ω
Dim Out pull down resistance
R_DO
DIM_OUT Resistance Low
I_{DIM_OUT} = -2mA
F_SW
Oscillator Frequency
R_SS
Soft Start Resistance
T_SD
Over Temperature Threshold
Shutdown
Temperature rising
Hysteresis
40
Ω
0.7
1
1.3 MHz
30
46
62
kΩ
165
°C
10
°C
Notes
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
Test Circuit
January 2010
4
M9999-011510-A