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Description : 16 Character by 2 Line Alphanumeric LCD Assembly With Embedded Controller

[PACIFIC DISPLAY DEVICES]

GENERAL INFORMATION
Product Overview
• 16 Character x 2 line Alphanumeric Dot Matrix LCD Module
• LCD Controller: Embedded S6A0069 or equivalent alpha-numeric controller
• Multiplexing driving: 1/16 duty, 1/5 bias
• Operating Mode: Super Twisted Nematic (STN) technology
• LCD Module Service Life: 100,000 hours minimum

 

Part Name(s) : SM8134A SM8134AB
NPC
Nippon Precision Circuits
Description : White LED driver IC

OVERVIEW
The SM8134A is a charge pump type white LED driver. It can drive 1 to 4 backlight white LED connected in parallel and 1 flash white LED, making the device ideal for camera-equipped cellular phones. The charge pump switches between ×1 to ×1.5 boost mode in response to LED drive current requirements to extend battery life to the maximum. The boost switching occurs in response to the drive current of all the connected LED and thus supports variations in LED forward-bias voltage drop (VF). Each LED drive current is controlLED by a 5-channel LED drive current control circuit. The backlight LED drive current and ON/OFF control, and flash
LED drive current and ON/OFF control are all set by 3-wire serial interface data input. Also, an under voltage lockout (UVLO) circuit is built-in to prevent incorrect operation when the battery voltage drops.

FEATURES
■ Noise reduction due to charge pump boost circuit
■ Automatic charge pump switching to conserve power
■ Drives 1 to 4 backlight white LED (30mA/ch at maximum setting)
■ Drives a flash white LED (150mA at maximum setting)
■ Backlight and flash white LED brightness adjustment
■ 3-wire serial input interface for all setting and control
■ Under voltage lockout (UVLO) circuit built-in
■ Soft start circuit built-in
■ Thermal protection circuit built-in
■ Input voltage range
• No-load current (IOUT= 0mA): 2.7 to 4.6V
• Load current (IOUT= 80mA): 3.0 to 4.6V
• Load current (IOUT= 180mA): 3.3 to 4.6V
• Load current (IOUT= 200mA): 3.4 to 4.6V
■ Quiescent current
• Not-switching (×1.0 mode): 0.3mA (typ)
• Switching (×1.5 mode): 1.7mA (typ)
■ Standby current: 0.01µA (typ)
■ Operating frequency: 750kHz (typ)
■ Maximum backlight LED current: 30mA/ch
■ Maximum flash LED current: 150mA
■ All LED total maximum current: 200mA
■ Backlight LED current matching (ILED= 20mA) : ±3%
■ Flash LED current accuracy (ILED= 150mA) : ±6.7%
■ Packages: 16-pin QFN

APPLICATIONS
■ Cellular phone
■ Digital still camera
■ PDA
■ Portable games

NPC
Nippon Precision Circuits
Description : White LED driver IC

OVERVIEW
The SM8133B is a charge pump type white LED driver. It can drive 1 to 6 backlight white LED connected in parallel and 1 flash white LED. The output voltage circuit has a 3.0V LDO (Low Dropout Regulator), making the device ideal for camera-equipped cellular phones. The charge pump switches between ×1 to ×1.5 boost mode in response to LED drive current requirements to extend battery life to the maximum. The boost switching occurs in response to the drive current of all the connected LED and thus supports variations in LED for ward-bias voltage drop (VF). Each LED drive current is controlLED by a 7-channel LED drive current control circuit. The 6 backlight channels can be subdivided into 2 groups, with each group having independent dimming and lighting control. The backlight grouping, backlight LED drive current and ON/OFF control, flash
LED drive current and ON/OFF control, and LDO output ON/OFF control are all set by 3-wire serial interface data input. Also, the RESETB pin can be connected to the microcontroller supply for a system-wide shutdown function.

FEATURES
■ Noise reduction due to charge pump boost circuit
■ Automatic charge pump switching to conserve power
■ Drives 1 to 6 backlight white LED(30mA/ch at maximum setting)
■ Drives a flash white LED (150mA at maximum setting)
■ Backlight and flash white LED brightness adjustment
■ Group settings for 2-group backlight lighting control
■ 3-wire serial input interface for all setting and control
■ 3.0V output LDO circuit built-in
■ Shutdown function by RESETB pin
■ Soft start circuit built-in
■ Thermal protection circuit built-in
■ Input voltage range
• No-load current (IOUT= 0mA): 2.7 to 4.6V
• Load current (IOUT= 80mA): 3.0 to 4.6V
• Load current (IOUT= 200mA): 3.3 to 4.6V
■ Quiescent current
• LDO only: 0.3mA (typ)
• Not -switching (×1.0 mode): 0.5mA (typ)
• Switching (×1.5 mode): 2.5mA (typ)
■ Standby current: 0.01µA (typ)
■ Operating frequency: 750kHz (typ)
■ Backlight LED current: 30mA/ch (typ)
■ Flash LED current: 150mA (typ)
■ All LED total maximum current: 200mA (typ)
■ Backlight LED current matching (ILED= 30mA) : ±3%
■ Flash LED current accuracy (ILED= 150mA) : ±5%
■ LDO (Low Dropout Regulator) output voltage : 3.0V±2%
■ Packages:20-pin QFN WL-CSP (under development)

APPLICATIONS
■ Cellular phone
■ Digital still camera
■ PDA
■ Portable games

Part Name(s) : SSL6203TW SSL6203TW/1J
NXP
NXP Semiconductors.
Description : 120 V mains dimmable, 12 W linear LED driver

General description
The SSL6203TW is a monolithic high-voltage Integrated Circuit (IC) that can drive and dim three high-voltage LED strings directly from the rectified mains. The high level of integration gives a low-cost and low component count application, which is especially suitable for retrofit Solid-State Lighting (SSL).
The IC operates as a linear high-voltage current source. The string current in the LEDs can easily be adjusted. A patented LED drive scheme ensures optimal LED utilization.
The application can be dimmed. It also runs on a leading-edge phase cut dimmer with the integrated smart bleeder current.
To guarantee correct and proper operation, the SSL6203TW incorporates many protection features.
A thermally enhanced small outline package gets rid of the heat and makes integration of the whole application on the LED plate possible.

Features and benefits
High-voltage integration
■ Integrated 120 mA (120 V (AC) mains compatible) high-voltage current sources
■ Integrated bleeder high-voltage current source
■ Integrated low voltage supply regulator
■ Two high-voltage current sources per output for optimal heat balancing
■ Start up Junction Field Effect Transistor (JFET)
■ Integrated floating switches for improving LED utilization
■ Robust high-voltage IC with 330 V rating, compatible with 120 V (AC) mains voltage

Mains dimmable
■ Leading-edge dimmer compatible (phase-cut)
■ Adjustable bleeder current by a single resistor
■ Adjustable LED current by a single resistor or controlLED by a current source
■ Low dimmer inrush current stress due to the absence of an electrolytic capacitor on
   the rectified mains

LED current
■ For high-voltage LEDs
■ Adjustable LED current using a single resistor or controlLED by a current source
■ Adjustable LED current ripple using external capacitors
■ Drives three LED strings (typical string voltage ranges from approximately 43 V to
   50 V (120 V (AC) mains))
■ Overvoltage feedback for < 10 % line and load regulation
■ Two high-voltage current sources per output for optimal heat balancing
■ Patented LED drive scheme for optimal LED utilization (US 20130257282 A1)

Protections
■ UnderVoltage LockOut (UVLO)
■ Open LED protection on every LED string
■ Protected against shorted LEDs
■ OverTemperature Protection (OTP) on the high-voltage current sources

Thermal features
■ Reduced IC dissipation because of the presence of dual LED current outputs per
   string, enabling the application of external heat dissipation resistors
■ Thermally enhanced thin shrink small outline package ensuring the heat can be
   transported to the PCB easily
■ Optimized start-up current for instantaneous on-light output

Mains current
■ High power factor (> 0.9)
■ Total Harmonic Distortion (THD) according to the IEC61000-3-2 standard
■ No inrush current
■ No EMI filter

Cost
■ Low component count
■ No inductors
■ No mains electrolytic capacitor
■ No EMI filter

Form factor
■ Small form factor
■ No inductors
■ No EMI filter required as the SSL6203TW is a non-high-frequency switching converter
■ High integration level

Smart lighting
■ Setting the LED and BLEED pins to 0 V externally using a smart lighting system can
   switch off the IC.
■ Externally controlling the LED pin with a current source using a smart lighting system
   can dim the LEDs.

Applications
■ 120 V (AC) mains dimmable retrofit SSL lamps

Part Name(s) : L135 L250 L400
Gilway
Gilway Technical Lamp
Description : T-1 Mini-Max flashlight Lamps

T-1 Mini-Max flashlight Lamps

ON-Semiconductor
ON Semiconductor
Description : Buck-Boost Converter to Drive a Single LED from 1 Li-Ion or 3 Alkaline Batteries

Buck−Boost Converter to Drive a Single LED from 1 Li−Ion or 3 Alkaline Batteries

The NCP5030 is a fixed frequency PWM buck−boost converter optimized for constant current applications such as driving high−powered white LED. The buck−boost is implemented in an H−bridge topology and has an adaptive architecture where it operates in one of three modes: boost, buck−boost, or buck depending on the input and output voltage condition. This device has been designed with high−efficiency for use in portable applications and is capable of driving in DC up to 900 mA into a high power LED for flashlight / torch applications. To protect the device cycle−by−cycle current limiting and a thermal shutdown circuit have been incorporated as well as output over−voltage protection. The 700 kHz switching frequency allows the use of a low value 4.7 H and ceramic capacitors. The NCP5030 is housed in a low profile space efficient 3x4 mm thermally enhanced WDFN.

Features
• Efficiency: 87% at 500 mA and 3.3 V VIN
• Internal Synchronous Rectifier, No Schottky Diodes
• Adjustable Switching Limit Current to Optimize inductor size
• 0.3 A Shut−down Control with “True−Cut off”
• Input Voltage Range from 2.7 V to 5.5 V
• 200 mV Feedback Voltage
• Output Over−voltage and Thermal Shut Down Protection

Typical Applications
• Portable flashlight / Torch Lights

Part Name(s) : MIC2870 MIC2870YFT
Micrel
Micrel
Description : 1.5A Synchronous Boost Flash LED driver with I2C Interface

General Description
The MIC2870 is a high-current, high-efficiency flash LED driver for one or two high-brightness camera flash LEDs.
The LED driver current is generated by an integrated inductive boost converter with 2MHz switching frequency which allows the use of a very-small inductor and output capacitor. These features make the MIC2870 an ideal solution for high-resolution camera phone LED flashlight driver applications.

Features
• Up to 1.5A flash LED driving current
    − 2.7V to 5.0V input voltage range
• High-efficiency 2MHz VF adaptive boost driver
• Configurable 1 or 2 channel(s) WLED driver
LED driving current soft-start
• Control through I2C interface or external pins
• Flash inhibit function for GSM pulse synchronization
• True load disconnect
• Flash time-out protection
• 1µA shutdown current
• Available in 16-pin 2mm × 2mm TQFN package

Applications
• Camera phones/mobile handsets
• Cellular phones/smart phones
LED light for image capture/auto focus/white balance
• Handset video light (torch light)
• Digital cameras
• Portable applications

Description : 16-Channel × 50mA LED driver

DESCRIPTION
The LT®3754 is a 16-channel LED driver with a step-up DC/DC controller capable of driving up to 45V of LEDs. Eachchannelcontainsanaccuratecurrentsinkwith±2.8% currentmatching. Channelsfollowamasterprogrammable current to allow between 10mA to 50mA of LED current per string. Channels can be paralleLED for higher LED current. Output voltage adapts to variations in LED VF for optimum efficiency and open LED faults do not affect the operation of connected LED strings.

FEATURES
■ Up to 45V of LEDs × 50mA, 16-Channel LED driver
■ Wide Input Range : 6V to 40V (4.5V to 13V, VIN Connected to INTVCC)
■ ±2.8% LED Current Matching at 20mA (Typ ±0.7%)
■ Up to 3000:1 True Color PWM™ Dimming Range
■ Single Resistor Sets LED Current (10mA to 50mA)
LED Current Regulated Even for PVIN > VOUT
■ Output Adapts to LED VF for Optimum Efficiency
■ Fault Flag + Protection for Open LED Strings
■ Protection for LED Pin to VOUT Short
■ Parallel Channels for Higher LED Current
■ Programmable LED Current Derating vs Temperature
■ Accurate Undervoltage Lockout Threshold with Programmable Hysteresis
■ Programmable Frequency (100kHz to 1MHz)
■ Synchronizable to an External Clock

APPLICATIONS
■ Automotive, Notebook and TV Monitor Backlighting

Description : 8-Channel × 100mA LED driver

DESCRIPTION
The LT®3760 is an 8-channel LED driver with a step-up DC/DC controller capable of driving up to 45V of LEDs. Each channel contains an accurate current sink with ±2% currentmatching. Channelsfollowamasterprogrammable current to allow between 20mA to 100mA of LED current per string. Channels can be paralleLED for higher LED current. Output voltage adapts to variations in LED VF for optimum efficiency and open LED faults do not affect the operation of connected LED strings.

FEATURES
■ Up to 45V of LEDs × 100mA, 8-Channel LED driver
■ Wide Input Range : 6V to 40V (4.5V to 13V, VIN Connected to INTVCC)
■ ±2% LED Current Matching at 40mA (Typ ±0.7%)
■ Up to 3000:1 True Color PWM™ Dimming Range
■ Single Resistor Sets LED Current (20mA to 100mA)
LED Current Regulated Even for PVIN > VOUT
■ Output Adapts to LED VF for Optimum Efficiency
■ Fault Flag + Protection for Open LED Strings
■ Protection for LED Pin to VOUT Short
■ Parallel Channels for Higher LED Current
■ Programmable LED Current Derating vs Temperature
■ Accurate Undervoltage Lockout Threshold with Programmable Hysteresis
■ Programmable Frequency (100kHz to 1MHz)
■ Synchronizable to an External Clock

APPLICATIONS
■ Automotive, Notebook and TV Monitor Backlighting

Description : Programmable, Four-String HB LED driver with Output-Voltage Optimization and Fault Detection

General Description
The MAX16826 high-brightness LED (HB LED) driver is designed for backlighting automotive LCD displays and other display applications such as industrial or desktop monitors and LCD televisions. The MAX16826 integrates a switching regulator controller, a 4-channel linear current sink driver, an analog-to-digital converter (ADC), and an I2C interface. The IC is designed to withstand automotive load dump transients up to 40V and can operate under cold crank conditions.
The MAX16826 contains a current-mode PWM switching regulator controller that regulates the output voltage to the LED array. The switching regulator section is configurable as a boost or SEPIC converter and its switching frequency is programmable from 100kHz to 1MHz.
The MAX16826 includes 4 channels of programmable, fault-protected, constant-current sink driver controllers that are able to drive all white, RGB, or RGB plus amber LED configurations. LED dimming control for each channel is implemented by direct PWM signals for each of the four linear current sinks. An internal ADC measures the drain voltage of the external driver transistors and the output of the switching regulator. These measurements are then made available through the I2C interface to an external microcontroller (μC) to enable output voltage optimization and fault monitoring of the LEDs.
The amplitude of the LED current in each linear current sink channel and the switch-mode regulator output voltage is programmed using the I2C interface. Additional features include: cycle-by-cycle current limit, shorted LED string protection, and overtemperature protection. The MAX16826 is available in a thermally enhanced, 5mm x 5mm, 32-pin thin QFN package and is specified over the automotive -40°C to +125°C temperature range.

Features
♦ External MOSFETs Allow Wide-Range LED
   Current with Multiple LEDs per String
♦ Individual PWM Dimming Inputs per String
♦ Very Wide Dimming Range
LED String Short and Open Protection
♦ Adjustable LED Current Rise/Fall Times Improve EMI Control
♦ Microcontroller Interface Using I2C Allows
   LED Voltage Monitoring and Optimization
   Using a 7-Bit Internal ADC
   LED Short and Open Detection
   Dynamic Adjustment of LED String Currents
   and Output Voltage
   Standby Mode
♦ Integrated Boost/SEPIC Controller
♦ External Switching Frequency Synchronization
♦ 4.75V to 24V Operating Voltage Range and Withstands 40V Load Dump
♦ Overvoltage and Overtemperature Protection

Applications
   LCD Backlighting:
      Automotive Infotainment Displays
      Automotive Cluster Displays
      Industrial and Desktop Monitors
      LCD TVs
   Automotive Lighting:
      Adaptive Front Lighting
      Low- and High-Beam Assemblies

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