MLX10803_06 Datasheet, PDF (7/25 Pages) List of Unclassifed Manufacturers – High power LED driver

IC specification MLX10803
High power LED driver
2. Application pins
Nr. Name
1 VREF
2 ROSC
3 IREF1
4 IREF2
5 RSENSE
6 GND
7 DRVGATE
8 VS/PWM
Function
Analogue input, setting of LED peak current
External resistor sets internal Oscillator frequency. Sets the average discharge time of the coil
External NTC resistor for temperature down regulation
External resistor sets the temperature breakpoint when the NTC resistor starts down regulation
External sense resistor pin for peak current detection
Ground
Pin driving the gate of the switching transistor
Supply Voltage / PWM signal
3. Absolute maximum ratings
Parameter
Symbol
Condition
Min Max
Unit
Power supply (VS/PWM)
vs
DC
-0.3 32
V
max. 2h
-0.3 36
V
Power supply, non operational function
vsmax
max 0.5s
36
80
V
max. 0.5s (Load dump)
Input current in protection circuitry on any pin iprot
In case of
-10
10
mA
maximum
supply ratings
Input voltage on RSENSE pin
virsense
normal
-0.3 11
operation
Input voltage on IREF1, IREF2, VREF pins vrefmax
without external -0.3 40
V
resistor
Input voltage on ROSC pin
Input voltage on DRVGATE pin
Input/output current on DRVGATE pin
Junction temperature
Lifetime
Dynamic
Storage temperature
Ambient temperature range
Thermal resistance junction to ambient
vroscmax
vdrvgatmax
idrgatemax
Tjunc
Tambient
rth
protected by
external 47k
resistor
normal
operation
idrvgatemax
current must
not be
exceeded
pulse mode
normal
operation.
max. 100h
normal
operation
SOIC8
-80
(0.5s)
-0.3
80
V
(0.5s)
Vdd+0.3 V
-0.3 22
V
500
mA
°C
-40
140
-40
150
-55
150
-40
125
°C
128.4 K/W
3901010803
Rev 024
Page 7/25
Data Sheet
7/DEC/06