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LED7707 데이터시트(PDF) 9 Page - STMicroelectronics

부품명 LED7707
상세설명  6-rows 85 mA LEDs driver with boost regulator for LCD panels backlight
PDF  48 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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LED7707 데이터시트(HTML) 9 Page - STMicroelectronics

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LED7707
Electrical characteristics
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Electrical characteristics
Table 6.
Electrical characteristics
(VIN = 12 V; TA = 0 °C to 85 °C and LDO5 connected to AVCC if not otherwise specified)
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Supply section
VLDO5
LDO output and IC supply
voltage
EN high
ILDO5 = 0 mA
4.4
5
5.5
V
VAVCC
IIN,Q
Operating quiescent current
RRILIM = 51 kΩ, RBILIM = 220 kΩ,
RSLOPE = 680 kΩ
DIM tied to SGND.
1mA
IIN,SHDN
Operating current in shutdown
EN low
20
30
μA
VUVLO,ON
LDO5 under voltage lock out
upper threshold
4.0
4.2
4.4
V
VUVLO,OFF
LDO5 under voltage lock out
lower threshold
3.7
3.8
3.9
LDO linear regulator
Line regulation
6 V
≤ V
IN ≤ 28 V, ILDO5 = 30 mA
25
mV
LDO dropout voltage
ILDO5 = 10 mA (-10 % drop)
80
120
LDO maximum output current
VLDO5 > VUVLO,ON
25
40
60
mA
VLDO5 < VUVLO,OFF
20
30
Boost section
tON,min
Minimum switching on-time
200
ns
fSW
Default switching frequency
FSW connected to AVCC
570
660
750
kHz
Adjustable switching frequency
250
1000
Minimum FSW sync frequency
220
mV
FSW sync input threshold
240
300
FSW sync input hysteresis
60
FSW sync input duty-cycle
FSW connected to AVCC
(Internal oscillator selected)
40
%
FSW sync min ON time
270
%
SYNC output duty-cycle
FSW connected to AVCC
(Internal oscillator selected)
34
40
%
SYNC output high level
ISYNC = 10 μA
VAVCC
-20V
mV
SYNC output low level
ISYNC = -10 μA
20
Power switch
KB
LX current coefficient
RBILIM = 300 kΩ
1E6
1.2E6
1.4E6
V
RDS(on)
Internal MOSFET on-resistance
280
500
m
Ω



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