MIC2860_P Datasheet, PDF (3/12 Pages) Micrel Semiconductor – High Efficiency 2 Channel WLED Driver with PWM Control

Micrel Inc.
MIC2860-2P
Absolute Maximum Ratings⁽¹⁾
Main Input Voltage (V_IN) .................................. –0.3V to +6V
Enable Input Voltage (V_EN)................................ –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.................................................................... 2KV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)..................................... +3.0V to +5.5V
Enable Input Voltage (V_EN) .................................... 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
WLED Linear Drivers
V_IN = V_EN = 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⁽³⁾
Matching⁽⁴⁾
Conditions
Min.
27.18
Typ.
30.2
±0.5
Max.
33.22
±3
Drop-Out (V_D1,D2)
Where I_LED = 90% of LED current seen at
V_DROPNOM = 0.6V, 100% brightness level
52
125
Ground/Supply Bias Current
I_OUT = 30.2mA
0.7
1.5
Shutdown Current (current source leakage) V_EN = 0V
0.01
1
PWM Dimming
Enable Input Voltage (V_EN)
Logic Low
Logic High
0.4
1.4
Enable Input Current
V_EN ≥1.4
Current-Source Delay (50% levels)
Shutdown to On
Standby to On
On to Standby
Current-Source Transient Time (10%−90%)
T_RISE
T_FALL
On-to-Shutdown Time
V_EN = 0V
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. As determined by average current of all channels in use and all channels loaded.
4. The current through each LED meets the stated limits from the average current of all LEDs.
0.01
1
32
80
1.5
4
0.3
0.7
0.2
4
5.8
10
Units
mA
%
mV
mA
µA
V
V
µA
µs
µs
ms
September 2010
3
M9999-092710-A