PAM2841 Datasheet PDF - Power Analog Micoelectronics
| Part Number | PAM2841 | |
| Description | 40V Precision WLED Driver | |
| Manufacturers | Power Analog Micoelectronics | |
| Logo |  |
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There is a preview and PAM2841 download ( pdf file ) link at the bottom of this page. Total 14 Pages | ||
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PAM2841
1.5A SW Current, 40V Precision WLED Driver
Features
n Capable of Driving 10 or more WLEDs
n Chip Enable with Soft-start
n Analog and PWM Dimming
n Peak Efficiency up to 90%
n Low Quiescent Current
n Fixed Frequency of 1MHz
n Over Current Protection
n Over Voltage Protection
n Thermal Protection
n UVLO
n Tiny Pb-Free Packages (RoHS
Compliant): MSOP-8 and DFN 2X2
Applications
n WLED Driver System
Description
The PAM2841 is a white LED driver, capable of
driving 10 or more WLEDs in series (depending on
forward voltage of the LEDs) with a range of input
voltages from 2.7V to 5.5V.
The PAM2841 features over current protection, over
voltage protection, under voltage lockout and over
temperature protection, which prevent the device
from damage.
LED dimming can be done by four methods as
described in the Application Information hereinafter.
Typical Application
VIN
C1
10μF
C2
1μF
www.DataSheet4U.com
C4
10nF
L1
22μH
D1(SS14)
PGND
SW
VIN OVP
PAM2841
ENA
FB
Comp
GND
R1
910kΩ
C3
1μF
R2
27kΩ
10 LEDs
R3
10Ω
D1(SS14)
VIN L1
22μH
C1
10μF
C2
1μF
PGND
SW
VIN OVP
PAM2841
ENA
FB
R1
910kΩ
C3
1μF
R2
27kΩ
C4
10nF
Comp
GND
R3
1.1Ω
3x9 LEDs
Power Analog Microelectronics,Inc
www.poweranalog.com
1
08/2008 Rev 1.3
|
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PAM2841
1.5A SW Current, 40V Precision WLED Driver
Typical Operating Characteristics
TA=25°C,V =DD 5V, unless otherwise noted.
1. Efficiency VS Input Voltage
I =LED 20mA, L=22µH
90%
85%
80%
75%
70%
65%
60%
55%
50%
2
3 45
Input Voltage(V)
6LED
8LED
10LED
12LED
6
95 %
90 %
85 %
80 %
75%
70%
65%
60%
0
2. Efficiency VS Load Current
6 LED, L=22µH
10 20 30 40
Output Current(mA)
VDD=5V
VDD=3.6V
50 60
3. Efficiency VS Input Voltage
I =LED 20mA, 10 LED
0.9
0.85
ww0w.8.DataSheet4U.com
0.75
0.7
0.65
0.6
2
L=4.7uH
L=10uH
L=22uH
L=33uH
L=47uH
3 45
Input Voltage(V)
6
4. LED Current VS Output Voltage
L=47µH
0.5
VDD=5V
VDD=3V
0.4
0.3
0.2
0.1
0
8 12 16 20 24 28 32 36
Output Voltage (V)
Power Analog Microelectronics,Inc
www.poweranalog.com
5
08/2008 Rev 1.3
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for PAM2841 electronic component. |
| Information | Total 14 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ PAM2841.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | Manufacturers |
| PAM2841 | The function is 40V PRECISION WLED DRIVER. |  Diodes |
| PAM2841 | The function is 40V Precision WLED Driver. | Power Analog Micoelectronics |
| PAM2842 | The function is HIGH POWER LED DRIVER. | Diodes |
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