Friday, September 25, 2015

MIP551 and MIP552 - Panasonic Semiconductors

MIP551 and MIP552 are good devices used in LED-lighting power control. Small size & high efficiency and most important worldwide input voltage (80 VAC to 280 VAC), and has dimmer control too.

ASSP for Power Supply - Intelligent Power Device

Typical LED peak current - MIP551 : 0.5 A and MIP552 : 1.0A; Over temperature protection for IPD (Auto-restart). Constant current control with simple LED drive circuit.

 IPD for LED-lighting MIP551 - EEM
IPD for LED-lighting MIP551/MIP552

MIP551/MIP552 - IPD (Intelligent Power Device) LED Lighting Driver 80 to 280 V - Output Freq is 44 kHz
  • MIP551 - 10 W Output Max
  • MIP552 - 30 W Output Max

Friday, September 18, 2015

LGR-5320 Series - Multifunction Data Loggers

The LGR-5320 Series are high-speed, stand-alone data loggers for analog and digital signals. Each module offers 16 analog inputs, 16 industrial digital inputs (up to 30 V), one single Form C relay (0.5 A) digital output for triggering/alarming, and four counter/encoder inputs. All inputs are sampled synchronously.

LGR-5320 Series - Multifunction Data Loggers

Stand-Alone, High-Speed, Multifunction Data Loggers.

LGR-5320 Series
Some Features
  • Up to 200 kS/s correlated sampling of all data
  • 16 analog inputs up to ±30 V
  • 16-bit resolution
  • 16 industrial digital inputs up to 30 V (500 V isolation available)
  • Single Form C relay digital output configurable for triggering/alarming
  • 4 counter inputs - conventional or quadrature available
  • 4 GB SD memory card included, supports up to 32 GB
  • Included DAQLog software
From - Measurement Computing

Wednesday, September 9, 2015

Constant LED Brightness and LDS8711

The LDS8711 is a fixed frequency current mode boost converter with internal rectifier and cycle-by- cycle switch current limit specifically designed to drive a string of up to 10 White LEDs.

Constant LED Brightness and LDS8711

Aa Switching Converter Chip with hardly any external components driving a HB LED chain. HB - High Brightness LED. This IC is from IXYS Power Devices.

High efficiency boost converter with the input voltage range from 2.7 to 5.5 V . Drives one LED string with 10 LEDs in series up to 32 mA.
  • 250 mV current sense voltage
  • No external Schottky Required
  • 0.7 MHz Switching Frequency
  • Efficiency greater than 83%
  • PWM LED Brightness Control
  • Low Shutdown Current (<1µA)
LED Current Setting - The maximum current value in the LED string may be factory preset in the range from 10 to 30mAin 0.125mA steps, or set by Smart OneWire interface in the range from 0.125to 32 mA.The average LED string current that determines LED brightness may be controlled applying PWM signal to the EN/PWM pin.