7âSEGMENT DRIVERS WITH BUILTâIN DECODERS
(COMMON ANODE CAPABILITY, MAXIMUM 4âDIGIT CONTROL)
The TB62709N and TB62709F are multifunctional, compact, 7âsegment LED display drivers.
These ICs can directly drive 7âsegment displays and individual LEDs, and can control either a 4âdigit display with decimal points, or 32 individual LEDs.
These ICs can also be used with commonâanode displays. Their outputs are constant current, the ampere levels at which are set using an external resistor.
A synchronous serial port connects the IC to the CPU.
The different modes of control provided by this device including Duty Control Register Set, Digit Set, Decode Set and Standby Set, are all based on every 16âbit of serial data.
FEATURES
â Control circuit power supply voltage
: VDD = 4.5 to 5.5 V
â Digit output rating
: 17 V / â400 mA
â Decoder output rating
: 17 V / 50 mA
â Builtâin decoder
: Decodes the numerals 0 to 9, certain alphabetic
characters, and of course blanks code.
â Digit control function
: Can scan digit outputs DIGâ0 to DIGâ3 when connected
to the common anode pins of a 7âsegment display.
â Maximum transmission frequency
: fCLK = 15 MHz
â Decoder outputs (OUTâA to OUTâDp)
Output current can be set up to a 40mA maximum using an external resistor.
â Constant current tolerance (Ta = 25°C, VDD = 5.0 V)
: Variation between bits = ±7%, variation between devices
(including variation between bits) = ±15% at VCE ⥠0.7 V
â Package
: 24âpin SDIP (SDIP24âPâ300â1.78)
24âpin SSOP (SSOP24âPâ300â1.00)
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