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L99LD20 датащи(PDF) 46 Page - STMicroelectronics

номер детали L99LD20
подробное описание детали  High power LED driver for automotive applications
PDF  61 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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L99LD20 датащи(HTML) 46 Page - STMicroelectronics

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Electrical specifications
L99LD20
46/61
DS11366 Rev 3
tTONMAX_OFF
Buck off time after
detection of two
consecutive TON_MAX
operation
64
µs
tDELAY
Time delay before to switch
on Buckx (in limp home)
10
ms
tLOOP_DELAY_BUCK Buck loop delay
190
ns
tON_MIN_BUCK
Operative Buck converter
minimum on-time
400
ns
tON_MAX_BUCK
Operative Buck converter
maximum on-time
20
µs
tOFF_MIN_BUCK
Operative Buck converter
minimum off-time
500
ns
tOFF_MAX_BUCK
Operative Buck converter
maximum off-time
10
µs
ILx_Peak
Inductor Peak Current
Reference Range (see
Table 35 and figures 9 and
10)
Low ILx_PEAK current range;
High RDSON mode
0.179
0.849
A
High ILx_PEAK current range;
Low RDSON mode
0.362
1.695
VLED_RES
VLED input impedance
425
k
ADC_RES
ADC resolution
8
bits
ADC_CONV_TIME
VLED1 ADC refresh time
Full conversion of 8 bits
VS = 13.5 V
VSPI = 5 V
VLEDx = 10 V
3.6
µs
VLED2 ADC refresh time
ADC_FS
ADC full scale for VLED
measurement
52.5
V
ADC_INL
ADC Integral Non Linearity
-2
2
LSB
ADC_DNL
ADC Differential Non
Linearity
-2
2
LSB
Table 34. Buck converter power stage (continued)
Symbol
Parameter
Test conditions
Min
Typ
Max
Unit



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