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TB62778FNG Datasheet, PDF (1/23 Pages) Marktech Corporate – 8-Channel Constant-Current LED Driver of the 3.3-V and 5-V Power Supply Voltage Operation | |||
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TENTATIVE TB62778FNG
TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB62778FNG
8-Channel Constant-Current LED Driver of the 3.3-V and 5-V Power Supply Voltage
Operation
The TB62778FNG is comprised of constant-current drivers
designed for LEDs and LED panel displays.
The regulated current sources are designed to provide a constant
current, which is adjustable through one external resistor.
The TB62778FNG incorporates eight channels of shift registers,
latches, AND gates and constant-current outputs.
Fabricated using the Bi-CMOS process, the TB62778FNG
satisfies the system requirement of high-speed data transmission.
The TB62778FNG is RoHS.
Weight: 0.07 g (typ.)
Features
⢠Power supply voltages: VDD = 3.3 V/5 V
⢠Output drive capability and output count: 50 mA à 8 channels
⢠Constant-current output range: 5 to 40 mA
⢠Voltage applied to constant-current output terminals: 0.4 V (IOUT = 5 to 40 mA)
⢠Current adjustment (via 7-bit serial data): The MSB, or the HC bit, selects the output current range:
25% to 50% range when HC = 0 or 50% to 100% range when HC = 1
The six LSB bits are used to adjust the current in 64 steps within the selected range.
⢠Designed for common-anode LEDs
⢠Thermal shutdown (TSD)
⢠Power on reset (POR)
⢠Output-open detection (OOD) and output-short detection (OSD)
⢠Input signal voltage level: 3.3-V and 5-V CMOS interfaces (Schmitt trigger input)
⢠Maximum output voltage: 25V
⢠Serial data transfer rate: 25 MHz (max) @cascade connection
⢠Operating temperature range: Topr = â40 to 85°C
⢠Package: SSOP-P-225-0.65B
⢠Constant-current accuracy
Output Voltage
0.4 V to 4 V
Current accuracy Current Accuracy
Between Channels Between ICs
±3%
±6%
Output Current
15 mA
1
(Ver.0.0) 08-02-07
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