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Part Name(s) : TS1520 TS1520CX5 TS1520CX5RF TSC
TSC Corporation
Description : STEP-UP DC-DC CONVERTER, WHITE LED DRIVER View

STEP-UP DC-DC CONVERTER, WHITE LED DRIVER

Part Name(s) : YB1508 YB1508P YOBON
YOBON TECHNOLOGIES,INC.
Description : STEP-UP DC-DC CONVERTER , WHITE LED DRIVER View

Description
The YB1508 is a STEP-UP DC-DC CONVERTER, acting as current source to drive up to 8 WHITE LEDs in series. Series connecting of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The light intensity of these LEDs is proportional to the current passing through them. Additional features include output over voltage protection to prevent device damage due to faulty LED or open circuit caused by abnormal conditions, and one-pin shutdown and multiple methods of dimming control.

Features
■ 2.7V to 9V input range
■ Adjustable output voltage up to 40V
■ Built in internal switch
■ Inherently matched LED current
■ Fixed frequency of 1MHz PWM operation
■ Open LED protection
■ Low profile 5-Lead SOT-23 package
■ High efficiency: over 80% at 3.6V input voltage
■ Drives up to 8 WHITE LEDs

Applications
■ LCD Display Module
■ OLED panel/sub-panel
WHITE LED Backlighting
■ Digital Camera
■ Cellular Phone
■ Portable Application

 

Part Name(s) : YB1506 YOBON
YOBON TECHNOLOGIES,INC.
Description : STEP-UP DC-DC CONVERTER , WHITE LED DRIVER View

Description
The YB1506 is a STEP-UP(Boost) DC-DC CONVERTER; operate as current source to drive up to 5 WHITE LEDs in series. Series connecting of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The light intensity of these LEDs is proportional to the current passing through them. The low off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space consideration applications for cellular phone backlighting or other hand held equipment.

Features
 Internal switch
 Adjustable output voltage up to 22V
 2.2V to 6.5V input range
 0.1uA shutdown current
 Small 5-Lead SOT-23 package
 High efficiency
 Drives 5 WHITE LEDs
 Over voltage protection
 
Applications
 LCD Display Module
 WHITE LED Backlighting
 PDAs
 Digital Cameras
 Portable Application
 Cellular Phone
 Electronic books

 

Part Name(s) : YB1510 YOBON
YOBON TECHNOLOGIES,INC.
Description : STEP-UP DC-DC CONVERTER, WHITE LED DRIVER View

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 in uniform brightness and 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 applications for cellular 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 and automotive (5V/12V) applications with higher conversion 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.

Features
■ 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

Applications
■ LCD Display Module
WHITE LED Backlighting
■ PDAs, GPS terminals
■ Digital Cameras
■ Cellular Phone
■ Electronic Books
■ Portable Applications


Part Name(s) : YB1520 YB1520ST25 YOBON
YOBON TECHNOLOGIES,INC.
Description : STEP-UP DC-DC CONVERTER, WHITE LED DRIVER View

Description
The YB1520 is a STEP-UP DC-DC CONVERTER; operates as current source to drive up to 18 WHITE LEDs in parallel/series configuration. Series connecting of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The light intensity of these LEDs is proportional to the current passing through them. The YB1520 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 applications for cellular phone backlighting or other hand held equipment.
The YB1520 can drive up to 18 WHITE LEDs from a 4.5V supply. The wide input voltage range from 2.7V to 7V is ideal for portable (5V) applications with higher conversion 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.
YB1520 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.

Features
■ Built-in Internal Switch
■ 2.7V to 7V Input Range
■ <1uA Shutdown Current
■ High Efficiency
■ Drives up to 3S2P to 3S6P WHITE LEDs (VIN at 3.5V to 5V)
■ Over Voltage Protection 30V
■ Small 5-Lead SOT-23 Package

Applications
■ LCD Display Module
WHITE LED Backlighting
■ PDAs, GPS terminals
■ Digital Cameras
■ Cellular Phone
■ Electronic Books
■ Portable Applications

Part Name(s) : YB1522 YB1522ST YB1522ST25 YOBON
YOBON TECHNOLOGIES,INC.
Description : STEP-UP DC-DC CONVERTER WHITE LED DRIVER View

Description
The YB1522 is a STEP-UP DC-DC CONVERTER; with wide input voltage range from 3V to 16V, which operates as current source to drive up to 3S7P to 3S10P (VIN at 3V to 5V). Series connecting of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The light intensity of these LEDs is proportional to the current passing through them. The YB1522 switches at a fixed frequency of ~930KHz, allowing the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space consideration applications.

Features
■ Built-in Internal Switch
■ 3V to 16V Input Range
■ <1uA Shutdown Current
■ High Efficiency
■ Internal Soft Start
■ Drives up to 3S7P to 3S10P WHITE LEDs(VIN at 3.5V to 5V)
■ Over Voltage Protection 30V
■ Small 5-Lead SOT-23 Package
■ Analog and PWM Dimming Control
■ 100mV Low Reference Voltage

Applications
■ 5” ~ 7” LCD Display Module
WHITE LED Backlighting
■ Car TV
■ Handheld and PDA
■ Electronic Books
■ Digital Photo Frame

 

Part Name(s) : BD9203EFV ROHM
ROHM Semiconductor
Description : WHITE LED DRIVER for LCD Backlights with STEP-UP DC/DC controller View

FEATURE
・ 6CH LED current DRIVER up to 150mA/CH built-in *2
・ Over voltage protection (OVP), Short circuit protection (SCP), LED open and short detection
STEP-UP DC/DC controller built-in
・ PWM and DC Dimming
・ Programmable timer latch and soft-start period by external capacitor
・ Over voltage protection (OVP), Short current protection (SCP), LED open and short detection 
・ Under voltage lock out (UVLO)
・ HTSSOP-B28 package

Part Name(s) : BD6583MUV ROHM
ROHM Semiconductor
Description : STEP-UP DC/DC CONVERTER for medium size LCD panel View

Features
High effciency PWM STEP-UP DC/DC CONVERTER(fsw = 1MHz)
High accuracy and good matching current DRIVER 6ch
Drive up to 12 in series x 6 strings in parallel = 72 WHITE LEDs( WHITE LED Vf = 3.5Vmax)

Part Name(s) : TK11840L-G TK11840LTL-G TK11840TL-G Toko
Toko America Inc
Description : STEP-UP DC-DC CONVERTER / WHITE LED DRIVER IC View

DESCRIPTION
The TK11840L-G is a STEP-UP DC-DC CONVERTER that drives an external NPN power transistor using a constant frequency PWM architecture. The IC works with a wide operating supply range (1.8V to 10V) and has an adjustable output. The IC timing oscillator operating frequency is programmable and
can be set up to 1MHz. It also incorporates a soft-start circuit and a short-circuit detection function of a timer-latch type.

FEATURES
„Operation from 1.8V to 10.0V supply
„Adjustable output voltage
„High speed adjustable OSC: up to 1MHz
„Incorporates a soft start circuit
„Incorporates a short circuit detection of a timer-latch
„Totem-pole type output in which drive current is adjustable using an switching resistor: pin 4
„1µA or less shutdown current
„Small package: SOT23L-8

 

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