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PDF AP3008 Data sheet ( Hoja de datos )
| Número de pieza | AP3008 | |
| Descripción | WHITE LED DRIVER | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AP3008 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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Data Sheet
WHITE LED DRIVER
General Description
Features
AP3008
The AP3008 is a 1.2MHz PWM boost switching regu-
lator designed for constant-current white LED driver
applications.
The AP3008 can drive a string of 2 to 3 white LEDs
from a 2.7V supply in series, ensuring uniform bright-
ness and eliminating several ballast resistors. The
AP3008 implements a constant frequency 1.2MHz
PWM control scheme. The high frequency PWM oper-
ation also saves board space by reducing external com-
ponent sizes. To improve efficiency, the feedback
voltage is set to 95mV, which reduces the power
dissipation in the current setting resistor.
· Inherently Uniform LED Current
· High Efficiency up to 84%
· Drives 2 to 3 LEDs from a 2.7V Supply
· 1.2MHz PWM Operation Frequency
· Requires Only 0.22µF Output Capacitor
· Shutdown Current: <1µA
· Built-in Output Over-Voltage Protection
· Under Voltage Lock Out (UVLO)
Applications
The AP3008 is equipped with OVP protection ability, · Digital Cameras
the SW pin monitors the output voltage and will turn · LCD modules
off the device if an over-voltage condition is present to · GPS Receivers
prevent damage from an open circuit condition.
· Cellular Phones
· PDAs, Handheld Computers
The AP3008 is available in SOT-23-5 package.
May 2013 Rev. 2. 0
SOT-23-5
Figure 1. Package Type of AP3008
BCD Semiconductor Manufacturing Limited
1
1 page  
WHITE LED DRIVER
Electrical Characteristics
(VIN=3V, VSHDN=3V, TA=25oC, unless otherwise specified.)
Parameter
Feedback Voltage
FB Pin Bias Current
Supply Current
Supply Current
Switch Frequency
Maximum Duty Cycle
Switch Current Limit
Switch VCESAT
Switch Leakage Current
SHDN Voltage
SHDN Pin Bias Current
OVP Voltage
Thermal Resistance
(Junction to Case)
Symbol
Conditions
VFB ISW=100mA, Duty Cycle=66%
Min
86
ICC VSHDN=VIN, VFB=VIN, No switching
IQ VSHDN=0V
f
DMAX
ILIM
VCESAT
VTH
VTL
Duty=15%
ISW=250mA
VSW=5V
High
Low
0.8
85
1.5
VOVP
θJC
Typ
95
45
1.9
0.1
1.2
90
320
350
0.01
50
29
86.10
Data Sheet
AP3008
Max
104
100
2.5
1.0
1.6
5
Unit
mV
nA
mA
µA
MHz
%
mA
mV
µA
V
0.4
µA
V
oC/W
May 2013 Rev. 2. 0
BCD Semiconductor Manufacturing Limited
5
5 Page 
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
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responsibility for use of any its products for
any liability arising out of the application or
any
use
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Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.
800 Yishan Road, Shanghai 200233, China
Tel: +86-021-2416-2266, Fax: +86-021-2416-2277
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- WaBfeCr FDabSemiconductor Manufacturing Limited
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11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AP3008.PDF ] | |
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