SC5014AMLTRT データシートの表示（PDF） - Semtech Corporation
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SC5014AMLTRT
Semtech Corporation
SC5014AMLTRT Datasheet PDF : 27 Pages
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LED String Current Matching vs. Temperature
Typical Characteristics (continued)
LED String Current Matching vs. Temperature
˄ˁˉ VCC=5V, 240mA/CH
˄ˁ˅
˃ˁˋ
˃ˁˇ
˃ˁ˃
ˀˇ˃
Switching
ˀ˅˃
˃
Frequency
˅˃
ˇ˃
vs.ˉ˃RFSETˋ˃
˄˃˃
Temperature (°C)
˧˸̀̃˸̅˴̇̈̅˸ʻкʼ
Switch˦̊in˼̇˶g˻˼́F˺ʳ˙r̅e˸̄q̈˸ú˶ěʳn̉̆cˁʳ˥y˙˦v˘s˧. RFSET
˅ˇ˃˃
˅˃˃˃
˄ˉ˃˃
˄˅˃˃
ˋ˃˃
ˇ˃˃
˃
˃
˄ˈ˃
ˆ˃˃
ˇˈ˃
ˉ˃˃
An˥a˙Rl˦oF˘Sg˧ETʻ˞(DKӨiΩmʼ )ming
LED String Current vs. Analog Dimming Control
Register (IDAC) Value
250
200
150
IO3+4
100
50
0
0
4
8
12
16
20
24
28
32
IDAC Register Value (in decimal format)
DEC
SC5014A
LED String Current vs. RISET
LED S˦t̊r˼̇i˶n˻˼́g˺ʳ˙C̅˸ṻr˸ŕe˶̌nʳ̉̆tˁʳ˥v˜˦s˘.˧ RISET
ˆ˃˃
˅ˈ˃
˅˃˃
˄ˈ˃
˄˃˃
ˈ˃ Current Accuracy vs. Temperature
˃
˃
˅˃
ˇ˃
ˉ˃
ˋ˃
˄˃˃
˄˅˃
˄ˇ˃
˥˜R˦˘I˧SʻE˞TӨ(Kʼ Ω)
LED String Current Accuracy vs Temperature
˜ˢˆʾˇ
˅ˇˋ VCC=5V, 240mA/CH
˅ˇˉ
˅ˇˇ
˅ˇ˅
˅ˇ˃
˅ˆˋ
˅ˆˉ
˅ˆˇ
ˀˇ˃
ˀ˅˃
˃
˅˃
ˇ˃
ˉ˃
T˧e˸m̀̃p˸̅e˴̇r̈̅a˸ʳtʻuкrʼe (°C)
ˋ˃
˄˃˃
PWPWMM DDiirmectm(1i0n0gHzL, i3n0KeHazr)ity
240mA/CH, 10S2P
100Hz
30KHz
100.00
10.00
100Hz
30KHz
1.00
0.10
0.01
0.01
0.10
1.00
10.00
100.00
LED PWM Dimming Duty Cycle(%)
Duty(%)
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