MIC2860_D Datasheet, PDF (3/12 Pages) Micrel Semiconductor – High Efficiency 2 Channel WLED Driver with Single Wire Digital Control

Micrel Inc.
MIC2860-2D
Absolute Maximum Ratings⁽¹⁾
Main Input Voltage (V_IN) ................................... -0.3V to +6V
Enable Input Voltage (V_SC).................................-0.3V to V_IN
LED Driver Voltage (V_{D1, D2}) ..............................-0.3V to V_IN
Power Dissipation .....................................Internally Limited
Lead Temperature (soldering, 10sec.)....................... 260°C
Storage Temperature (T_s) ..........................-65°C to +150°C
ESD Rating⁽³⁾................................................. ESD Sensitive
Operating Ratings⁽²⁾
Supply Voltage (V_IN)..................................... +3.0V to +5.5V
Enable Input Voltage (V_SC) .................................... 0V to V_IN
LED Driver Voltage (V_{D1, D2}) .................................. 0V to V_IN
Junction Temperature (T_J) ........................ –40°C to +125°C
Junction Thermal Resistance
SC-70 (θ_JA).....................................................256 °C /W
SOT-23 (θ_JA) ..................................................177 °C /W
Electrical Characteristics
V_IN = V_SC = 3.6V, C_IN = 1µF, R_SET = 9.53kΩ; V_{D1, D2} = 0.6V; T_J = 25°C, bold values indicate –40°C ≤ T_J ≤ 85°C; unless
noted.
Parameter
Current Accuracy⁽⁴⁾
Matching⁽⁵⁾
Conditions
Min
27.18
Drop-out (V_{D1, D2})
Where I_LED = 90% of LED current seen at
V_DROPNOM = 0.6V, 100% brightness level
Ground/Supply Bias Current
I_OUT = 30.2mA
Shutdown Current
(current source leakage)
V_SC = 0V > 500µs
Digital Dimming
V_SC Input Voltage
Logic Low
Logic High
1.4
V_SC Enable Input Current
V_SC = 1.2V
t_SHUTDOWN
t_{PROG_HIGH}, t_{PROG_LOW}
Time SC pin is low to put into shutdown
Time for valid SC edge; Ignored if outside limit range
0.3
t_{START_UP}
Delay from SC is high to start up
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. As determined by average current of all channels in use and all channels loaded.
5. The current through each LED meets the stated limits from the average current of all LEDs.
Typ
30.2
±0.5
52
0.7
0.01
0.01
100
33
Max
33.22
±3
125
1.5
1
Units
mA
%
mV
mA
µA
0.4
V
V
1
µA
500
µs
75
µs
µs
July 2010
3
M9999-072010-A