PAM2803 Datasheet PDF - Power Analog Micoelectronics
| Part Number | PAM2803 | |
| Description | 3W High Power White LED Driver | |
| Manufacturers | Power Analog Micoelectronics | |
| Logo |  |
|
|
There is a preview and PAM2803 download ( pdf file ) link at the bottom of this page. Total 8 Pages | ||
Preview 1 page No Preview Available !
PAM2803
3W High Power White LED Driver
Features
General Description
n LED Power Efficiency: up to 90%
n Current Accuracy:±5%(V =IN 3.6V to 1.8V
@VF=3.7V)
n Low Start-Up Voltage: 0.9V(I =LED 270mA)
n Low Hold Voltage:0.75V(ILED=200mA)
n 1MHz Switching Frequency
n Uses small, Low Profile External Components
n Low RDS(ON) : 100mΩ (TYP.)
n Open LED Protection
n Over Temperature Protection
n Low Profile SOT-23-6 Package
n Pb-Free Package
Applications
n White LED Torch (Flashlight)
n White LED Camera Flash
n DSC(Digital Still Camera)Flash
n Cellular Camera Phone Flash
n PDA Camera Flash
n Camcorder Torch(Flashlight) Lamp
The PAM2803 is a set-up DC-DC converter that
delivers a regulated output current. The device
switches at a 1.0MHz constant frequency,
allowing for the use of small value external
inductor and ceramic capacitors.
The PAM2803 is targeted to be used for driving
loads up to 1A from a two-cell alkaline battery. The
LED current can be programmed by the external
current sense resistor, Rs, connected between the
feedback pin (FB) and ground. A low 95mV
feedback voltage reduces the power loss in the Rs
for better efficiency. With its internal 2A, 100mΩ
NMOS switch, the device can provide high
efficiency even at heavy load. During the
shutdown mode, the feedback resistor Rs and the
load are completely disconnected and the current
consumption is reduced to less than 1uA.
The PAM2803 is available in the 6-lead SOT-23-6
package.
Typical Application
2.2uH
1
SW
6 VIN VOUT 5
www.DataSheet4CUIN.com
PAM2803
VIN
10uF
SHDN FB
OFF ON 4
GND
2
3
I =LED 750mA, RS=0.127Ω
3W
WLED
CO
RS 10uF
Block Diagram
95mV
Reference
+
A1
-
FB
VOUT VIN
Comparator
-
Rc A2
+
Cc
PWM Logic
And Driver
Σ
Ramp
Generator
SW
+
-
SHDN Shutdown
And
Soft-start
1.0MHz
Oscillator
GND
Power Analog Microelectronics,Inc
www.poweranalog.com
1
08/2007
|
| |
 
PAM2803
3W High Power White LED Driver
Typical Performance Characteristics (continued)
5. Switching Waveform
6. Start-Up Waveform
SW
VO
AC
Coupling
IL
7. Overvoltage Protection
SHDN
VO
IL
www.DataSheet4U.com
Power Analog Microelectronics,Inc
www.poweranalog.com
5
08/2007
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for PAM2803 electronic component. |
| Information | Total 8 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ PAM2803.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | Manufacturers |
| PAM2800 | The function is HIGH POWER WHITE LED DRIVER. |  Diodes |
| PAM2800 | The function is High Power White LED Driver. | Power Analog Micoelectronics |
| PAM2801 | The function is 1W High Power White LED Driver. | Power Analog Micoelectronics |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
PAM2
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||