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PM6600 Datasheet(PDF) 12 Page - STMicroelectronics

Part # PM6600
Description  6-row 32 mA LED driver with boost regulator for LCD panel backlight
PDF  43 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM6600 Datasheet(HTML) 12 Page - STMicroelectronics

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Typical operating characteristics
PM6600
12/43
5
Typical operating characteristics
All the measures are done with a standard PM6600EVAL demoboard and a standard
WLED6021NB demoboard, with the components listed in the EVAL_KIT document.
The measures are done with this working conditions, unless specified:
●
Vin = 12 V
●
Vout = 6 rows x 10 WLEDs = 34 V (typ)
●
Iout = 20 mA each row
●
fsw = 660 kHz (nominal switching frequency, with FSW .. AVCC)
●
Vrow1 to Vrow6 = {0.697, 0.75, 0.818, 0.696, 0.822, 0.363} V
Figure 3.
Efficiency vs
DIM duty cycle @ fDIM = 200 Hz
Figure 4.
Efficiency vs
DIM duty cycle @ fDIM = 500 Hz
Figure 5.
Efficiency vs
DIM duty cycle @ fDIM = 1 kHz
Figure 6.
Efficiency vs
DIM duty cycle @ fDIM = 5 kHz
0
10
20
30
40
50
60
70
80
90
100
0
2040
6080
100
DIM duty cycle [%]
Vin = 6V
Vin = 12V
Vin = 18V
Vin = 24V
0
10
20
30
40
50
60
70
80
90
100
020
40
60
80
100
DIM duty cycle [%]
Vin = 6V
Vin = 12V
Vin = 18V
Vin = 24V
0
10
20
30
40
50
60
70
80
90
100
0
2040
6080
100
DIM duty cycle [%]
Vin = 6V
Vin = 12V
Vin = 18V
Vin = 24V
0
10
20
30
40
50
60
70
80
90
100
0
2040
6080
100
DIM duty cycle [%]
Vin = 6V
Vin = 12V
Vin = 18V
Vin = 24V



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