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PDF AP3030 Data sheet ( Hoja de datos )
| Número de pieza | AP3030 | |
| Descripción | WHITE LED STEP-UP CONVERTER | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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WHITE LED STEP-UP CONVERTER
General Description
Features
Data Sheet
AP3030
The AP3030 is an inductor-based DC/DC converter
designed to drive up to eight white LEDs in series or 2
rows of LEDs with 5 for each in parallel for backlight.
Only one feedback resistor is needed to control the
LED current and obtain required brightness.
A constant frequency 1.2MHz PWM control scheme is
employed in this IC, which means tiny external com-
ponents can be used. Specifically, 1mm tall inductor
and 0.22µF output capacitor for a typical application
are sufficient. Additionally, the schottky diode in boost
circuit is integrated on this chip. AP3030 also provides
a disable pin to ease its use for different systems.
The output over-voltage protection is implemented in
AP3030. When any LED is broken or in other abnor-
mal conditions, the output voltage will be clamped.
The AP3030 is available in standard SOT-23-6 and
TSOT-23-6 packages.
· Inherently Uniform LED Current
· High Efficiency up to 84%
· No Need for External Schottky Diode
· Output Over-Voltage Protection (OVP)
· Fixed 1.2MHz Switching Frequency
· Uses Tiny 1mm Tall Inductor
· Requires Only 0.22µF Output Capacitor
Applications
· Cellular Phones
· Digital Cameras
· LCD modules
· GPS Receivers
· PDAs, Handheld Computers
www.DataSheet4U.com
Oct. 2009 Rev. 1. 6
SOT-23-6
TSOT-23-6
Figure 1. Package Types of AP3030
BCD Semiconductor Manufacturing Limited
1
1 page  
WHITE LED STEP-UP CONVERTER
Electrical Characteristics
(VIN=3V, VCTRL =3V, TA=25oC, unless otherwise specified.)
Parameter
Minimum Operating Voltage
Maximum Operating Voltage
Feedback Voltage
FB Pin Bias Current
Quiescent Current
Shutdown Quiescent Current
Switch Frequency
Maximum Duty Cycle
Switch Current Limit (Note 2)
Switch VCE Saturation Voltage
Switch Leakage Current
CTRL Pin Voltage
Symbol
VIN(min)
Conditions
VIN(max)
VFB
IOUT=20mA, 4 LEDs,
TA=-40oC to 85oC
IFB
IQ
ISHDN
f
DMAX
ILIMIT
VCESAT
VCTRL
VFB=VIN, no switching
VCTRL=0V
D=40%
D=80%
ISW=250mA
VSW=5V
High
Low
CTRL Pin Bias Current
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OVP Voltage
Schottky Forward Drop
Schottky Leakage Current
Soft Start Time
Thermal Resistance
(Junction to Case)
ICTRL
VOV
VDROP
t
θJC
TA=85oC
TA=-40oC
ID=150mA
VR=23V
VR=27V
SOT-23-6
TSOT-23-6
Min Typ
2.5
188 200
35
1.5 2.5
2.0 3.2
0.9 1.2
90 93
550
550
360
0.01
1.8
40 55
50
75
30
0.7
0.1
300
60
60
Note 2: The switch current limit is related to duty cycle. Please refer to Figure 15 for detail.
Data Sheet
AP3030
Max Unit
V
16
212 mV
100 nA
3.2 mA
5.0 µA
1.5 MHz
%
mA
mV
5 µA
V
0.05
72
µA
V
V
4
µA
150
µS
oC/W
Oct. 2009 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
5
5 Page 
WHITE LED STEP-UP CONVERTER
Mechanical Dimensions
SOT-23-6
Data Sheet
AP3030
Unit: mm(inch)
2.820(0.111)
3.020(0.119)
0.300(0.012)
0.400(0.016)
6 54
Pin 1 Dot by Marking
12
3
0.950(0.037)TYP
www.DataSheet4U.com
1.800(0.071)
2.000(0.079)
0.300(0.012)
0.600(0.024)
0°
8°
0.200(0.008)
0.700(0.028)REF
0.000(0.000)
0.100(0.004)
0.100(0.004)
0.200(0.008)
0.900(0.035) 1.450(0.057)
1.300(0.051)
MAX
Oct. 2009 Rev. 1. 6
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AP3030.PDF ] | |
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