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| SM8130 Datasheet, PDF (5/6 Pages) Nippon Precision Circuits Inc – White LED Driver IC | |||
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SM8130 series
FUNCTIONAL DESCRIPTION
LED driving current is able to control by regulating CONT pin input voltage. The relation between VCONT and
ILED is ILED [A] = 0.04 Ã VCONT [V]. If CONT pin input voltage is over the limit value, the LED current lim-
iter turns on to keep ILED at a constant limit current. By the CONT input hysteresis, VCONT â ILED relation
has a discontinuity area at limiter turning off.
VCONT
0.75V
ILED control
voltage input
ILED
ILED current
30mA
Limiter on
ILED = VCONT 0.04 [A]
hys
5mA
TYPICAL APPLICATIONS
4.7µF
ENA
DC
2.7 to 4.6V
CONT
VCONT
VSS
IIN
VIN
VREF
AMP
OSC
Soft Start
Driver
MOS
Switch
Current
Limiter
Current
Control
C1M
C1P
1.0µF
VOUT
4.7µF
DIN1
DIN2
DIN3
ILED
VCONT
0.125V
0.250V
0.375V
0.500V
ILED/pcs
5mA/pcs
10mA/pcs
15mA/pcs
20mA/pcs
IIN
35mA
65mA
95mA
125mA
NIPPON PRECISION CIRCUITS INC.â5
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