DD313-4 Datasheet, PDF (5/15 Pages) Silicon Touch Technology Inc. – LED open circuit detection

DD313-4
Electrical Characteristics
At Vcc = 4.5 to 40 V, TA = -40C to 85C. Typical values at Vcc = 24 V and TA = 25C, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN TYP MAX
Driver Characteristic
Leakage output current
IOL IOUT = 40V, driver off
0.36
Constant current error
(device-to-device)
IOL1
IOUT, 100% PWM duty, VOUT = 1.0 V, REXT
= 33  (~ 20 mA)
3
Line regulation
Load regulation
IOL2
IOL3
IOUT, 100% PWM duty, VOUT =1.0 V, REXT =
33  (~ 20 mA)
IOUT, 100% PWM duty, VOUT = 1.0 ~ 10V,
REXT = 33  (~ 20 mA)
0.01
0.01
Temperature drift
IOL4 Junction temperature < 125C
-5
5
Current Sensing
Current sensing voltage VSENSE
650
Regulated Supply
PSRR
VPSRR DC to 1MHz (VCC = 24 V), IOUT = 20mA
-64
PSRR
VPSRR DC to 1MHz (VCC = 36 V), IOUT = 20mA
-64
Turn on time
tON
500
Temperature Sensor
Thermal alarm threshold TALM Junction temperature (TJ)
100 115 130
Thermal shutdown
threshold
TSHD Junction temperature (TJ)
150 165 175
Thermal error hysteresis THYS Junction temperature (TJ)
5
10
20
Pull-high resistor
PWM Function
RPH
Connected between internal supply (4.4 V)
and PWM IN pin
4.0
LED Open Detection
LED open detection
VLO
0.3
threshold
Pull-high resistor
Open drain current
ALARM Function
RPH
Connected between internal supply (4.4 V)
and ALARM OUT pin
90
IOD
Vout = 0.4 V
2.3
Supply Current
100% PWM duty, REXT = 33  (~ 20 mA)
1.1
Supply current
ICC 100% PWM duty, R_EXT = 13  (~ 50 mA)
1.1
100% PWM duty, REXT = 6.5  (~ 100 mA)
1.1
UNIT
µA
%
%/V
%/V
%
mV
dB
(A/V)
µs
C
C
C
KΩ
V
KΩ
mA
mA
40V Adjustable Current Sink Linear LED Driver
Version:PRE.002
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