YB1509 Datasheet: High-Power White LED Driver





YB1509 High-Power White LED Driver Datasheet

Part Number YB1509
Description High-Power White LED Driver
Manufacture YOBON TECHNOLOGIES
Total Page 7 Pages
PDF Download Download YB1509 Datasheet PDF

Features: www.DataSheet4U.com YB1509 High-Power W hite LED Driver Features „ 2V to 16V I nput Voltage „ 40V Maximum Output Volt age „ Drive up to 18 White LEDs „ Adj ustable Inductor Current „ 1µs Consta nt Off-time PFM Control „ 1KHz to 100K Hz PWM Dimming Control Description The YB1509 is a high-power boost converter . An adjustable current limit, wide ran ge of input voltage, and up to 40V of s witch voltage are designed to drive whi te LEDs back-lighting for large LCD pan el. It can drive up to 10 LEDs in serie s or 18 LEDs in parallel/series configu ration. The wide application VIN range makes YB1509 suitable for many types of battery applications such as Li-ions, Alkaline, or Sealed Lead Acid batteries . The adjustable inductor current optim izes the performance for different outp ut drive capability by an external resi stor. The LED current is set by a resis tor connected to FB pin. The On/Of duty with clock frequency from 1K to 100KHz at EN pin can control the LED brightness Applications „ PDA, Palmtop.

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YB1509
High-Power White LED Driver
Description
The YB1509 is a high-power boost
converter. An adjustable current limit, wide
range of input voltage, and up to 40V of
switch voltage are designed to drive white
LEDs back-lighting for large LCD panel. It
can drive up to 10 LEDs in series or 18
LEDs in parallel/series configuration.
The wide application VIN range makes
YB1509 suitable for many types of battery
applications such as Li-ions, Alkaline, or
Sealed Lead Acid batteries. The adjustable
inductor current optimizes the performance
for different output drive capability by an
external resistor.
The LED current is set by a resistor
connected to FB pin. The On/Of duty with
clock frequency from 1K to 100KHz at EN
pin can control the LED brightness
Features
„ 2V to 16V Input Voltage
„ 40V Maximum Output Voltage
„ Drive up to 18 White LEDs
„ Adjustable Inductor Current
„ 1µs Constant Off-time PFM Control
„ 1KHz to 100KHz PWM Dimming Control
Applications
„ PDA, Palmtops and Smart Phones
„ LCD Monitor
„ LCD TV
„ Portable DVD player
„ White LED backlighting
„ GPS navigation system
„ Handheld Game
Typical Application Circuit
VIN= 6 to14V
10uF
16V
10nF
6.3V
EN
Bypass
Iset
1K
VIN
YB1509
GND
22uH
SL12
4.7uF
35V
LX
BZV55-B 36
FB
2KOHM
Figure 1. Typical application circuit
YB1509 MRev.1.1
www.yobon.com.tw
RFB
60OHM
1

                    






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