MLX10803_06 Datasheet, PDF (8/25 Pages) List of Unclassifed Manufacturers – High power LED driver

IC specification MLX10803
High power LED driver
4. Electrical characteristics
Following characteristics are valid
- for the full temperature range of Tambient = -40°C to +125°C,
- a supply range of 32V ≥ vs > 6V
unless other conditions noted.
With 6V ≥ vs > vporh analogue parameters can not be guaranteed.
Note: The correct operation of the MLX10803 as a switching mode power supply for voltages lower than the
nominal supply voltage is dependent on the forward bias voltage of the used LED.
The user must ensure that at low supply voltage the peak current threshold voltage on the RSENSE pin can
be reached in order to keep the switching principle working.
If several pins are charged with transients above VS/PWM and below GND, the sum of all substrate currents of the
influenced pins should not exceed 10mA for correct operation of the device.
Normal operating supply voltage is supposed to be 13.8V.
Parameter
Symbol
Maximum current during
80V load dump
Normal supply current at
highest DC voltage
Normal supply current
ihv
inomdch
inom
Conditions
Min
Global parameters
vs=80V
vs=32V
vs=13.8V
400
Limits
Typ
Max
10
2
700
Units
mA
mA
µA
IC settling time
IC settling time after
tsettle
10
power on reset
Oscillator related parameters
The min/max specification influences inversely all derived timings
Min oscillator frequency foscmin
For a selected
0.4
0.5
0.6
external resistor of
440kΩ and room
temperature
Max oscillator frequency foscmax
For a selected
4.0
5.0
6.0
external resistor of
40kΩ and room
temperature
µs
MHz
MHz
3901010803
Rev 024
Page 8/25
Data Sheet
7/DEC/06