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PAM2842 bảng dữ liệu(PDF) 6 Page - Power Analog Micoelectronics

tên linh kiện PAM2842
Giải thích chi tiết về linh kiện  High Power LED Driver
PDF  17 Pages
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nhà sản xuất  PAM [Power Analog Micoelectronics]
Trang chủ  http://www.poweranalog.com
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PAM2842 bảng dữ liệu(HTML) 6 Page - Power Analog Micoelectronics

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Electrical Characteristic
V =V =24V, 1Wx10 LEDs, T =25°C, unless otherwise noted
EN
DD
A
.
6
,
Power Analog Microelectronics Inc
PAM2842
High Power LED Driver
www.poweranalog.com
PARAMETER
Conditions
Min
Typ
Max
Units
Input Voltage Range
5.5
40
V
ENA=high (no switching)
1
2
mA
ENA =high (1M switching frequency)
6
mA
ENA =high (500k switching frequency)
3
mA
ENA =high (200k switching frequency)
1.6
mA
Quiescent Current
ENA =low
5
10
μA
Feedback Voltage, Low Side
VFB=VSENSE+ -AGND, VSENSE-=AGND
95
100
105
mV
Feedback Voltage, High Side
VFB=VSENSE+ -VSENSE-
95
100
105
mV
LED Current Line Regulation
IO=350mA
0.02
%/V
LED Current Load Regulation
1.0
%
LDO Stage
VDD_5V
No switching
4.5
5
5.5
V
VDD_5V current_limit
No switching
14
74
90
mA
VDD_5V UVLO Threshold
No switching
3.7
4.0
4.3
V
VDD_5V UVLO Hysteresis
No switching
200
mV
VDD_DR
No switching
4.5
5
5.5
V
VDD_DR current_limit
No switching
14
50
90
mA
VDD_DR UVLO Threshold
No switching
3.7
4.0
4.3
V
VDD_DR UVLO Hysteresis
No switching
200
mV
Switch Stage
Switch Rdson
VDD_5V=5V
0.1
Ω
Switch Current Limit
3.5
A
Switch Leakage Current
50
μA
RT Voltage
R
RT=71kΩ
1.1
1.2
1.3
V
RRT=30kΩ
800k
1M
1.2M
Hz
RRT=71kΩ
400
500
600
kHz
Switching Frequency*
RRT=180kΩ
160
200
240
kHz
F
SW=1MHz
10
%
FSW=500kHz
5
%
Min Duty Cycle
FSW=200kHz
2.5
%
Low Side Sense
95
%
MaxDutyCycle
High Side Sense
100
%
Vc Source Current
Feedback voltage=0
30
μA
Vc Sink Current
Feedback voltage=0
30
μA
09/2008 Rev 1.1
* Switching Frequency
()
12
10
24
12
SW
RT
F
Rk
=
´+
, reference value



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