ZXSC400
LED DRIVER BOOST CONVERTER
DESCRIPTION
The ZXSC400 is a voltage mode boost converter in the SOT23-6 package. It...
ZXSC400
LED DRIVER BOOST CONVERTER
DESCRIPTION
The ZXSC400 is a voltage mode boost converter in the SOT23-6 package. Its low feedback voltage allows the current in a chain of LEDs 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 LED current will typically change by less than 1%. Using high efficiency Zetex switching
transistors with ratings of 20V and higher allow many LEDs to be chained in series for the best LED current matching possible.
FEATURES
1.8V to 8V supply range Typical output regulation of Ϯ1% Over 80% typical efficiency 4.5A typical shutdown current Series connection for ultimate LED current matching
SOT23-6
APPLICATIONS
White LED backlighting for colour LCD panels General LED backlighting High performance white LED flashlights General LED driving from batteries
PINOUT
ORDERING INFORMATION
DEVICE
ZXSC400E6TA
REEL SIZE
7“
TAPE WIDTH
8mm
QUANTITY PER REEL
3000 units
VCC GND STDN
Top View
DRIVE VFB SENSE
DEVICE MARKING
C400
ISSUE 1 - JANUARY 2003 1
ZXSC400
ABSOLUTE MAXIMUM RATINGS
VCC DRIVE EOR STDN SENSE Operating Temp. Storage Temp. Power Dissipation -0.3V to -0.3V to -0.3V to -0.3V to -0.3V to -40°C to -55°C to 450mW +10V VCC + 0.3V VCC + 0.3V The lower of (+5.0V) or (VCC + 0.3V) The lower of (+5.0V) or (VCC + 0.3V) +85°C +125°C
ELECTRICAL CHARACTERISTICS Test Conditions VCC= 3V, T= -40°C to 85...