Low Duty LCD Segment Drivers for Automotive applications - BU91530KVT-M

BU91530KVT-M is a 1/5, 1/4, 1/3duty or Static general-purpose LCD driver that can be used for automotive applications and can drive up to 445 LCD Segments. This product can support VA LCD displays, which has better optical performance with higher LCD voltage driving and higher frame frequency driving.It can support operating temperature of up to +105C and can control up to 9 general-purpose outputs / PWM output ports for LED backlighting and LED button illumination realizing less flicker by various frequency setting function. It can also support a key scan function that detects a maximum of 30 keys inputs to reduce PCB wiring and to minimize microcontroller size and cost. It can support LCD contrast adjustment by its EVR function and TTL compatible input interface is also available, these are well-suited for wide-voltage range of MCUs.

Part NumberStatusPackageUnit QuantityMinimum Package QuantityPacking TypeRoHS
BU91530KVT-ME2ActiveTQFP100V500500TapingYes

BU91530KVT-M Data Sheet

Specifications
GradeAutomotive
Segment Element445
Duty1/5, 1/4, 1/3, Static
Bias1/3, 1/2
Elements of MUX 1:190
Elements of MUX 1:3270
Elements of MUX 1:4360
Elements of MUX 1:5445
Interface [line serial]3wire+KEYOUT
Interface Voltage (Min.)[V]2.7
Interface Voltage (Max.)[V]6.0
Max GPO [port]9
Max KEYSCAN [Key]30
TTL input SupportYes
LCD Driving WaveformLine/Frame
Operating Temperature (Min.)[°C]-40
Operating Temperature (Max.)[°C]105
Technical Documents
Features
  • 1/5, 1/4, 1/3duty or Static setting selectable
    1/5duty driving: Max 445 segments
    1/4duty driving: Max 360 segments
    1/3duty driving: Max 270 segments
    Static driving: Max 90 segments
  • 1/3 or 1/2 bias setting selectable
  • Support wide range of operation voltage from 2.7V to 6.0V,
    which can support TN LCD and VA LCD display.
  • Integrated LCD voltage driving circuit
  • Integrated oscillation circuit for LCD frame frequency
  • Line or Frame inversion driving selectable
  • Integrated 9ch general purpose outputs/ PWM outputs (SEG selectable)
  • Support 256 step PWM function to realize backlight/ button LED illumination
  • Support LCD frame frequency from 49Hz to 391Hz, total 16setting
  • Support PWM frequency from 146Hz to 2.34KHz, total 16setting
  • Support 3 wire serial interface + KEYOUT
  • Support TTL level input to connect 3.3V MCU directly
  • Support Max 30 key input detection (SEG selectable)
  • Integrated EVR function to adjust LCD contrast
  • Integrated voltage detected type power on reset circuit
  • No external components required
  • Low power consumption design
  • Support up to +105°C operation,
    qualified AEC-Q100 Grade2
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BU91530KVT-M BU91530KVT-M
BU9795BGUW BU9795BGUW
BU91R63CH-M3BW BU91R63CH-M3BW
BU91797MUF-M BU91797MUF-M
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Application Note BA12004BF
Part Explanation BA12004BF