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PDF AP3031A Data sheet ( Hoja de datos )
| Número de pieza | AP3031A | |
| Descripción | WHITE LED STEP-UP CONVERTER | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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WHITE LED STEP-UP CONVERTER
General Description
Features
Data Sheet
AP3031A
The AP3031A is an inductor-based DC/DC boost con-
verter designed to drive LED arrays. 1.2A switching
current allows AP3031A to be used in series 10 LEDs
application typically.
A constant frequency 1MHz PWM control scheme is
employed in this IC, which means tiny external com-
ponents can be used. Specifically, 1mm tall 22µH
inductor and 0.47µF output capacitor for the typical
application is sufficient.
The over output voltage protection is equipped in
AP3031A, which protects the IC under open load con-
dition. The AP3031A includes UVLO, soft-start, cur-
rent limit and OTSD to protect the circuit.
· Fast 1MHz Switching Frequency
· Wide Input Voltage Range: 2.7V to 16V
· Low 200mV Feedback Voltage
· Output Over Voltage Protection:36V
· Cycle by Cycle Current Limit: 1.2A
· Built-in Soft-start
· Built-in Standby Mode to Achieve High Fre-
quency PWM Dimming
· Built-in Thermal Shutdown Function
· Under Voltage Lockout
Applications
The AP3031A is available in standard SOT-23-6 pack- · Digital Photo Frame
age. · GPS Receiver
· EPC
· PDVD
www.DataSheet4U.com
May 2009 Rev. 1. 1
SOT-23-6
Figure 1. Package Type of AP3031A
BCD Semiconductor Manufacturing Limited
1
1 page  
Data Sheet
WHITE LED STEP-UP CONVERTER
Electrical Characteristics
(VIN=5.0V, VCTRL =5.0V, TA=25oC, unless otherwise specified.)
AP3031A
Parameter
Operating Voltage
Symbol
VIN
Conditions
Min Typ Max
2.7 16
Feedback Voltage (Note 2)
VFB
IOUT=20mA, TA=-40oC to 85oC
188
200
212
FB Pin Bias Current
Quiescent Current
Shutdown Quiescent Current
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch VCE Saturation Voltage
Switch Leakage Current
CTRL Pin Voltage
CTRL Pin Bias Current
OVP Voltage
Soft-start Time
Standby Time
www.DataSheTehte4rUm.caol mShutdown
IFB
IQ
ISHDN
f
DMAX
ILIMIT
VCESAT
VCTRL
ICTRL
VOVP
tSS
tSTB
TOTSD
VFB=VIN, no switching
VCTRL=0V
D=60%
ISW=0.6A
VSW=35V
Active high
Active low
35 100
1.5 3.0 5.0
20 50 80
0.75 1
1.3
90 93
1.0 1.2
300
0.01 5
1.8
0.5
40 55 72
36
300
0.7
160
Note 2: The bold type specifications of full temperature range are guaranteed by design (GBD).
Unit
V
mV
nA
mA
µA
MHz
%
A
mV
µA
V
µA
V
µs
ms
oC
May 2009 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page 
BCD Semiconductor Manufacturing Limited
http://www.bcdsemi.com
www.DataSheet4U.com
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-
cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any
particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or
other rights nor the rights of others.
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| PDF Descargar | [ Datasheet AP3031A.PDF ] | |
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