yb1510 YOBON TECHNOLOGIES,INC., yb1510 Datasheet
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yb1510
Manufacturer Part Number
yb1510
Description
Step-up Dc-dc Converter,white Driver
Manufacturer
YOBON TECHNOLOGIES,INC.
Datasheet
1.YB1510.pdf
(1 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
YB1510
Manufacturer:
YOBON
Quantity:
20 000
Description
The YB1510 is a step-up DC-DC converter;
operates as current source to drive up to 7
white LEDs in series. Series connecting of
the LEDs provides identical LED currents
resulting
eliminating the need for ballast resistors.
The light intensity of these LEDs is
proportional to the current passing through
them. The YB1510 switches at a fixed
frequency of 700KHz, allowing the use of
tiny, low profile inductors and capacitors to
minimize footprint and cost in space
consideration
phone backlighting or other hand held
equipment.
The YB1510 can drive up to 7 white LEDs
from a single Li-Ion battery. The wide input
voltage range from 2.7V to 16V is ideal for
portable
applications
efficiency. To control LED brightness, the
LED current can be pulsed by applying a
PWM (pulse width modulated) signal with a
frequency range of 100Hz to 50KHz to the
CTRL pin.
YB1510 has integrated Over Voltage
Protection that prevents damage to the
device in case of a high impedance output
due to faulty LED or open circuit caused by
abnormal conditions.
Typical Application Circuit
YB1510 MRev.0.4
Figure 1: Typical Application Circuit
in
and
with
uniform
applications
automotive
higher
brightness
for
WWW.yobon.com.tw
conversion
Step-up DC-DC Converter,White LED Driver
(5V/12V)
cellular
and
Features
Applications
Built-in internal switch
Adjustable output voltage up to 35V
2.7V to 16V input range
<1uA shutdown current
High efficiency
Drives up to 7 white LEDs
Over voltage protection
Small 5-Lead SOT-23 package
LCD Display Module
White LED Backlighting
PDAs, GPS terminals
Digital Cameras
Cellular Phone
Electronic Books
Portable Applications
Preliminary YB1510
85
80
75
70
65
60
55
0
5
LED CURRENT (mA)
EFFICIENCY
Vin=4.2V
10
Vin=3.6V
15
1
20