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參數(shù)資料
| 型號(hào)： | SC620 |
| 廠商： | Semtech Corporation |
| 英文描述： | Octal LED Driver, General Purpose Current Sink with Serial Interface |
| 中文描述： | 八路LED驅(qū)動(dòng)器，通用吸電流的串行接口 |
| 文件頁數(shù)： | 8/16頁 |
| 文件大?。?/td> | 363K |
| 代理商： | SC620 |
(1) Default value is the register contents immediately following a
high transition at the enable pin.
SC620 Slave Address
Following a start condition, the bus master outputs the ad-
dress of the slave device. The 7 bit slave address for the
SC620 is 1110 000x. The eighth bit is the data direction
bit and also the least signi
fi
cant bit (LSB). 0xE0 is used for
a write operation, and 0xE1 is used for a read operation.
DEVICE ADDRESS
R/W
1
1
1
0
0
0
0
1/0
Dimming Control Register Description
The dimming control registers set the multiplier used to
determine the absolute current setting. Current setting for
each current sink is determined by multiplying the cur-
rent step size (as described in Table 1) by the decimal
multiplier in each dimming control register. For example,
if the current step size is set to 500
μ
A and the L1 Dim-
ming Control Register bits (L1_5 through L1_0) are set to
010100 (20 decimal), then the output current for ILED1
is set to 20 x 500
μ
A = 10mA. Note that the maximum
current setting occurs when the dimming control register
bits are set to 110010 (50 decimal) - any bit combination
larger than this one will default to the maximum setting.
Register Map
Address
D7
D6
D5
D4
D3
D2
D1
D0
Description
Default
(1)
00H
L8_EN
1 = on
0 = off
L7_EN
1 = on
0 = off
L6_EN
1 = on
0 = off
L5_EN
1 = on
0 = off
L4_EN
1 = on
0 = off
L3_EN
1 = on
0 = off
L2_EN
1 = on
0 = off
L1_EN
1 = on
0 = off
LED on/off control
00H
01H
X
X
L1_5
L1_4
L1_3
L1_2
L1_1
L1_0
LED1 dimming control
01H
02H
X
X
L2_5
L2_4
L2_3
L2_2
L2_1
L2_0
LED2 dimming control
01H
03H
X
X
L3_5
L3_4
L3_3
L3_2
L3_1
L3_0
LED3 dimming control
01H
04H
X
X
L4_5
L4_4
L4_3
L4_2
L4_1
L4_0
LED4 dimming control
01H
05H
X
X
L5_5
L5_4
L5_3
L5_2
L5_1
L5_0
LED5 dimming control
01H
06H
X
X
L6_5
L6_4
L6_3
L6_2
L6_1
L6_0
LED6 dimming control
01H
07H
X
X
L7_5
L7_4
L7_3
L7_2
L7_1
L7_0
LED7 dimming control
01H
08H
X
X
L8_5
L8_4
L8_3
L8_2
L8_1
L8_0
LED8 dimming control
01H
09H
X
X
X
X
G4
G3
G2
G1
gain register
08H
Table 1 - Gain Setting Values (default = 1000)
G4
G3
G2
G1
Current Step
Size (
μ
A)
31.25
62.5
93.75
125
156.25
187.5
218.75
250
281.25
312.5
343.75
375
406.25
437.5
468.75
500
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
8
2006 Semtech Corp.
www.semtech.com
POWER MANAGEMENT
SC620
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| SC620 RPL | 制造商:Schneider Electric 功能描述:REPAIR/REPLACE - Bulk |
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| SC620-DF | 制造商:Schneider Electric 功能描述:DEFECTIVE - Bulk |
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