ZXSC400:Low Voltage DC-DC LED Drivers

Part NumberData SheetSPICE ModelTopologies (Buck)Topologies (Buck-Boost)Topologies (Boost)MinimumInput Voltage (V)MaximumInput Voltage (V)Maximum Output Voltage (V)LED Current (A)Switching Frequency (kHz)Efficiency (%)OperatingTemperatureRange (°C)QuiescentCurrentTyp (mA)
ZXSC400ZXSC400.pdf---Yes1.88Ext BJTExt BJT20094-40 to +850.22
Description

The ZXSC400 is a voltage mode boost converter in the SOT26 package. Its low feedback voltage allows the current in a chain of °Cs to be set and accurately monitored with a single resistor giving minimal losses. Its excellent load and line regulation means that for the full supply range from lithium-ion cells, the °C current will typically change by less than 1%. Using high efficiency Zetex switching transistors with ratings of 20V and higher allow many °Cs to be chained in series for the best °C current matching possible.

Application
  • White LED backlighting for colour LCD panels
  • General LED backlighting
  • High performance white LED flashlights
  • General LED driving from batteries
Features
  • 1.8V to 8V supply range
  • Typical output regulation of ±1%
  • Over 80% typical efficiency
  • 4.5μA typical shutdown current
  • Series connection for ultimate °C current matching
Ordering Information
  • ZXSC400E6TA
SOT26
ZXSC400.pdf ZXSC400
ZXTP2006E6 ZXTP2006E6
ZXTP2006E6 ZXTP2006E6