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BD8119FM-M
● Electrical Characteristics – Continued (unless otherwise specified, VCC=12V Ta=25 ℃ )
Technical Note
Parameter Symbol
Limits
Min Typ Max.
Unit
Conditions
[LED Output Block]
LED current
relative dispersion width
LED current
absolute dispersion width
ISET voltage
PWM minimum pulse width
PWM maximum duty
PWM frequency
VDAC gain
Open detection voltage
LED Short detection Voltage
LED Short Latch OFF Delay Time
PWM Latch OFF Delay Time
I LED1
I LED2
V ISET
Tmin
Dmax
f PWM
G VDAC
V OPEN
V SHORT
T SHORT
T PWM
-3
-5
1.96
25
-
-
-
0.2
4.4
70
70
-
-
2.0
-
-
-
25
0.3
4.7
100
100
+3
+5
2.04
-
100
20
-
0.4
5.0
130
130
%
%
V
μs
%
KHz
mA/V
V
V
ms
ms
I LED =50mA,
Δ I LED1 =(I LED I LED_AVG -1) × 100
I LED =50mA,
Δ I LED2 =(I LED 50mA-1) × 100
RISET 1=120k Ω
F PWM =150Hz, I LED =50mA
F PWM =150Hz, I LED =50mA
Duty=50%, I LED =50mA
V DAC =0 ～ 2V, R ISET =120k Ω
I LED =VDAC ÷ R ISET × Gain
V LED = Sweep down
V OVP = Sweep up
RT=100k Ω
RT=100k Ω
[Logic Inputs (EN, SYNC, PWM, LEDEN1, LEDEN2)]
Input HIGH voltage
Input LOW voltage
V INH
V INL
2.1
GND
-
-
5.5
0.8
V
V
Input current 1
Input current 2
I IN
I EN
20
15
35
25
50
35
μA
μA
V IN =5V
(SYNC, PWM, LEDEN1, LEDEN2)
V EN =5V (EN)
[FAIL Output (open drain) ]
FAIL LOW voltage
V OL
-
0.1
0.2
V
I OL =0.1mA
◎ This product is not designed for use in radioactive environments.
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
3/20
2011.08 - Rev.B
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