P/N + Description + Content Search

Description
The AL8807A is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 9 white HIGH brightness LEDs in series from a voltage source of 6V to 36V.

Features
• LED Driving Current up to 1A/1.3A
• Better than 5% Accuracy
• HIGH EFFICIENCY Up to 96%
• Optimally Controlled Switching Speeds
• Operating Input Voltage from 6V to 36V
• WIDE ANALOG Input RANGE for DIMMING Control (>10:1)
• Built-in Protection Features:
   ◾ Open-Circuit LED protection
   ◾ LED Chain Short Circuited
   ◾ Over-Temperature Protection
• MSOP-8EP and SOT25: Available in “Green” Molding Compound
   (No Br, Sb) with lead Free Finish/ RoHS Compliant
   ◾ Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
   ◾ Halogen and Antimony Free. “Green” Device (Note 3)

Applications
• General Illumination Lamps
• 12V Powered LED Lamps
• WIDE ANALOG DIMMING RANGE LED Lamps

Description
The AL8807B is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 9 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 36V. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The AL8807B switches at frequency up to 1MHz with controlled rise and fall times to reduce EMI. This alLOWs the use of small size external components, hence minimizing the PCB area needed.
Maximum output current of AL8807B is set via an external resistor connected between the VIN and SET input pins. DIMMING is achieved by applying a PWM signal at the CTRL input pin. An input voltage of 0.4V or LOWer at CTRL switches off the output MOSFET simplifying PWM DIMMING.

Features
● LED driving current up to 1.3A
● Better than 5% accuracy
● HIGH EFFICIENCY up to 96%
● Optimally controlled switching speeds
● Operating input voltage from 6V to 36V
● PWM input for DIMMING control
● Open-Circuit LED protection
● LED Chain Short Circuited
● Over-Temperature Protection
● MSOP-8EP Available in “Green” Molding Compound (No Br,
   Sb) with lead Free Finish/ RoHS Compliant
   ▪ Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
   ▪ Halogen and Antimony Free. “Green” Device (Note 3)

Applications
● MR16 lamps
● General illumination lamps
● 12V powered LED Lamps
● 24V powered LED Lamps

WIDE VIN 1A Synchronous BUCK Regulator

The ISL85410 is a 1A Synchronous BUCK regulator with an input RANGE of 3V to 36V. It provides an easy to use, HIGH EFFICIENCY LOW BOM count solution for a variety of applications.

Features
• WIDE input voltage RANGE 3V to 36V
• Synchronous Operation for HIGH EFFICIENCY
• No compensation required
• Integrated HIGH-side and LOW-side NMOS devices
• Selectable PFM or forced PWM mode at light loads
• Internal fixed (500kHz) or adjustable Switching frequency 300kHz to 2MHz
• Continuous output current up to 1A
• Internal or external Soft-start
• Minimal external components required
• Power-good and enable functions available.

Applications
• Industrial control
• Medical devices
• Portable instrumentation
• Distributed Power supplies
• Cloud Infrastructure

The AL8806 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 8 LEDs, depending on the forward voltage of the LEDs, in series from a voltage source of 6V to 36V. The AL8806 switches at frequencies up to 1MHz. This alLOWs the use of small size external components, hence minimizing the PCB area needed.

Maximum output current of AL8806 is set via an external resistor connected between the VIN and SET input pins. DIMMING is achieved by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or LOWer at CTRL switches off the output MOSFET simplifying PWM DIMMING.

ISL8033 is a dual integrated power controller rated for 3A per channel with a 1MHz step-down regulator that is ideal for any LOW power LOW-voltage applications. The ISL8033A offers 2.5MHz operation for smaller more compacted design. The channels are 180° out-of-phase for input RMS current and EMI reduction. It is optimized for generating LOW output voltages down to 0.8V each. The supply voltage RANGE is from 2.85V to 6V, alLOWing for the use of a single Li+ cell, three NiMH cells or a regulated 5V input. It has a guaranteed minimum output current of 3A each when ISET is connected to VDD. The output current of each output is
selectable by setting ISET pin.

Features
• Dual 3A HIGH EFFICIENCY Synchronous BUCK Regulator with up to 95% EFFICIENCY
• 2% Output Accuracy Over-Temperature/Load/Line
• Internal Digital Soft-Start - 1.5ms
• External Synchronization up to 6MHz (ISL8033)
• Internal Current Mode Compensation
• Peak Current Limiting and Hiccup Mode Short Circuit Protection
• Adjustable Peak Overload Current
• Negative Current Protection
• Pb-Free (RoHS Compliant)

Applications
• DC/DC POL Modules
• µC/µP, FPGA and DSP Power
• Plug-in DC/DC Modules for Routers and Switchers
• Test and Measurement Systems
• Li-ion Battery Power Devices
• Bar Code Readers

WIDE VIN 1A Synchronous BUCK Regulator

The ISL85410 is a 1A synchronous BUCK regulator with an input RANGE of 3V to 40V. It provides an easy to use, HIGH EFFICIENCY LOW BOM count solution for a variety of applications.

Features
• WIDE input voltage RANGE 3V to 40V
• Synchronous operation for HIGH EFFICIENCY
• No compensation required
• Integrated HIGH-side and LOW-side NMOS devices
• Selectable PFM or forced PWM mode at light loads
• Internal fixed (500kHz) or adjustable switching frequency 300kHz to 2MHz
• Continuous output current up to 1A
• Internal or external soft-start
• Minimal external components required
• Power-good and enable functions available

Applications
• Industrial control
• Medical devices
• Portable instrumentation
• Distributed power supplies
• Cloud infrastructure

Description
The ISL85033DUALEVAL1Z kit is intended for use by individuals with requirements for Point-of-Load applications sourcing from 4.5V to 28V. The ISL85033DUALEVAL1Z evaluation board is used to demonstrate the performance of the ISL85033 WIDE VIN dual standard BUCK regulator with 3A/3A output current converter.
The ISL85033 is offered in a 4mmx4mm 28 Ld TQFN package with 1mm maximum height. The complete converter occupies 6.25cm2 area.

Key Features
• WIDE Input Voltage RANGE from 4.5V to 28V
• Adjustable Output Voltage with Continuous Output Current up to 3A
• Current Mode Control
• Adjustable Switching Frequency from 300kHz to 2MHz
• Independent Power-Good Detection
• Selectable In-Phase or Out-of-Phase PWMs Switching Operation
• Independent, Sequential, Ratiometric or Absolute Tracking Between Outputs
• Internal 2ms Soft-start Time
• Overcurrent and Hiccup Mode Short Circuit Protection, Thermal Overload Protection, UVLO
• Boot Undervoltage Detection
• Channels are Out-of-phase, Reducing Voltage Ripple and Component Size

DESCRIPTION
The PT6911 is ideally suited for AC/DC BUCK LED drivers. Since the PT6911 includes an 8V-450V linear regulator which alLOWs it to work from a WIDE RANGE of input voltages without the need for an external LOW voltage supply. Besides, the PT6911 operates in hysteretic control mode, the controller achieves good output current regulation without the need for any loop compensation. The PT6911 delivers constant current within HIGH accuracy to a WIDE variety and number of series connected LEDs.
The PT6911 includes PWM DIMMING and linear DIMMING functions. The PWM DIMMING input can accept an external control signal with a duty cycle of 0~100% and a frequency between 100Hz and a few KHz. Output current to LED string can be programmed to any value between 0 to its maximum value by PWM DIMMING. Also, a 0~1.2V linear DIMMING input can be used for linear DIMMING of the LED current.

FEATURES
• 8V to 450V input RANGE
• Hysteretic controller
• HIGH accuracy output current
• LOW stand-by power dissipation
• Soft start
• PWM LOW-frequency DIMMING and linear DIMMING

APPLICATIONS
• AC/DC LED driver
• Backlight LED driver
• Constant-Current driver

3A LOW Quiescent Current 1MHz HIGH EFFICIENCY Synchronous BUCK Regulator

The ISL8013 is a HIGH EFFICIENCY, monolithic, synchronous step-down DC/DC converter that can deliver up to 3A continuous output current from a 2.7V to 5.5V input supply. It uses a current control architecture to deliver very LOW duty cycle operation at HIGH frequency with fast transient response and excellent loop stability.

Features
• HIGH EFFICIENCY Synchronous BUCK Regulator with up to 97% EFFICIENCY
• Power-Good (PG) Output with a 1ms Delay
• 2.7V to 5.5V Supply Voltage
• 3% Output Accuracy Over-Temperature/Load/Line
• 3A Output Current
• Start-up with Pre-Biased Output
• Internal Soft-Start - 1ms
• Soft-Stop Output Discharge During Disabled
• 35µA Quiescent Supply Current in PFM Mode
• Selectable Forced PWM Mode and PFM Mode
• External Synchronization up to 4MHz
• Less than 1µA Logic Controlled Shutdown Current
• 100% Maximum Duty Cycle
• Internal Current Mode Compensation
• Peak Current Limiting and Hiccup Mode Short Circuit Protection
• Over-Temperature Protection
• Small 16 Ld 4mmx4mm QFN
• Pb-Free (RoHS Compliant)

Applications
• DC/DC POL Modules
• µC/µP, FPGA and DSP Power
• Plug-in DC/DC Modules for Routers and Switchers
• Portable Instruments
• Test and Measurement Systems
• Li-ion Battery Powered Devices
• Small Form Factor (SFP) Modules
• Bar Code Readers

3A LOW Quiescent Current 1MHz HIGH EFFICIENCY Synchronous BUCK Regulator

The ISL8013A is a HIGH EFFICIENCY, monolithic, synchronous step-down DC/DC converter that can deliver up to 3A continuous output current from a 2.8V to 5.5V input supply. It uses a current control architecture to deliver very LOW duty cycle operation at HIGH frequency with fast transient response and excellent loop stability.

Features
• HIGH EFFICIENCY Synchronous BUCK Regulator with up to 97% EFFICIENCY
• Power-Good (PG) Output with a 1ms Delay
• 2.8V to 5.5V Supply Voltage
• 3% Output Accuracy Over-Temperature/Load/Line
• 3A Output Current
• Start-Up with Pre-Biased Output
• Internal Soft-Start - 1ms
• Soft-Stop Output Discharge During Disabled
• 35µA Quiescent Supply Current in PFM Mode
• Selectable Forced PWM Mode and PFM Mode
• External Synchronization up to 4MHz
• Less than 1µA Logic Controlled Shutdown Current
• 100% Maximum Duty Cycle
• Internal Current Mode Compensation
• Peak Current Limiting and Hiccup Mode Short Circuit Protection
• Over-Temperature Protection
• Small 16 Ld 4mmx4mm QFN
• Pb-Free (RoHS Compliant)

Applications*(see page 16)
• DC/DC POL Modules
• µC/µP, FPGA and DSP Power
• Plug-in DC/DC Modules for Routers and Switchers
• Portable Instruments
• Test and Measurement Systems
• Li-ion Battery Powered Devices
• Small Form Factor (SFP) Modules
• Bar Code Readers