MIC3205 Datasheet, PDF (4/23 Pages) Micrel Semiconductor – High-Brightness LED Driver Controller with Fixed-Frequency Hysteretic Control

Micrel, Inc.
MIC3205
Electrical Characteristics ⁽⁴⁾ (Continued)
V_IN = V_EN = V_DIM = 12V; C_VCC = 4.7µF; T_J = 25C; bold values indicate 40C  T_J  125C, unless noted.
Symbol
Parameter
Condition
Min. Typ.
Enable Input
EN_HI
EN_LO
I_EN
t_START
EN Logic Level High
EN Logic Level Low
EN Bias Current
Start-Up Time
V_EN = 12V
V_EN = 0V
From EN pin going high to DRV
going high
2.0
20
65
Dimming Input
DIM_HI
DIM_LO
I_DIM
t_DIM
DIM Logic Level High
DIM Logic Level Low
DIM Bias Current
DIM Delay Time
V_DIM = 12V
V_DIM = 0V
From DIM pin going high to DRV
going high
2.0
20
450
f_DIM
Maximum Dimming Frequency
% of switching frequency
2
External FET Driver
R_ON
DRV On-Resistance
Pull-Up, I_SOURCE = 10mA
Pull-Down, I_SINK = -10mA
4
1.5
t_DRV
DRV Transition Time
Rise Time, C_LOAD = 1000pF
Fall Time, C_LOAD = 1000pF
13
7
Thermal Protection
T_LIM
Overtemperature Shutdown
T_J Rising
160
T_LIMHYS
Overtemperature Shutdown Hysteresis
20
Notes:
1. Exceeding the absolute maximum rating can damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
5. See “Sense Voltage Hysteresis Range” in the “Application Information” section.
6. See “Frequency of Operation” in the “Application Information” section.
Max. Units
V
0.4
V
60
µA
1
µA
µs
V
0.4
V
50
µA
1
µA
ns
%
Ω
Ω
ns
ns
C
C
October 2012
4
M9999-102312-A