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PDF ( 数据手册 , 数据表 ) TC62D776CFNAG

零件编号 TC62D776CFNAG
描述 16-Channel Constant-Current LED Driver
制造商 Toshiba
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TC62D776CFNAG 数据手册, 描述, 功能
TC62D776CFNAG
TOSHIBA CDMOS Integrated Circuit Silicon Monolithic
TC62D776CFNAG
16-Channel Constant-Current LED Driver of the 3.3-V and 5-V Power Supply
The TC62D776CFNAG is a constant-current driver for LED and
LED display lighting applications.
The output current from each of the 16 outputs is programmable
via a single external resistor.
The TC62D776CFNAG contains a 16-channel shift register, a
16-channel latch, a 16-channel AND gate and a 16-channel
constant-current output.
Fabricated with a CMOS process, the TC62D776CFNAG allows
high-speed data transfer.
It operates with a 3.3- or 5-V power supply.
.
P-SSOP24-0409-0.64-001
Weight : 0.14g (typ.)
Features
Supply voltage
16-output built-in
: VDD = 3.0~5.5 V
Output current setup range
: IOUT = 1.5~90 mA
Constant current output accuracy (@ REXT = 1.2 kΩ, VOUT = 1.0 V, VDD = 3.3 V, 5.0 V)
: S rank; between outputs ± 1.5 % (max)
: S rank; between devices ± 1.5 % (max)
: N rank; between outputs ± 2.5 % (max)
: N rank; between devices ± 2.5 % (max)
Output voltage
: VOUT = 17 V (max)
I/O interface
: CMOS interfaces (Schmitt trigger input)
Data transfer frequency
: fSCK = 25 MHz (max)
Operation temperature range
: Topr = 40~85 °C
8-bit (256 steps) current correction function built-in.
1 bit (HC) by the MSB side: Selects the output current range.
7 bit by the LSB side: Output current is adjusted at 128 steps in the range of 11% to 45%. (In the case of HC=1)
Output current is adjusted at 128 steps in the range of 50% to 200%. (In the case of HC=0)
Thermal shutdown function (TSD) built-in.
Output error detection function built-in.
Auto-output error detection and manual-output error detection using commands
Output open detection function (OOD) and output short detection function (OSD) built-in.
Power-on-reset function built-in. (When the power supply is turned on, internal data is reset)
Stand-by function built-in. (IDD = 1μA at standby mode)
Output delay function built-in. (Output switching noise is reduced)
Package
: P-SSOP24-0409-0.64-001
For detailed part naming conventions, contact your local Toshiba sales representative or distributor.
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TC62D776CFNAG pdf, 数据表
TC62D776CFNAG
Output form of output opening/short detection result data
The result of output open/short detection is transferred to the 16-bit Shift Register in the format shown
below.
MSB
LSB
E15 E14 E13 E12 E11 E10 E9 E8 E7 E6 E5 E4 E3 E2 E1 E0
OUT15 OUT14 OUT13 OUT12 OUT11 OUT10 OUT9 OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 OUT0
Error code (when output open detection function is effective)
Judging in error detection
Error code
VOODVOUT
VOOD<VOUT
0
1
Condition of output terminal
Open
Normal
Error code (when output short detection function is effective)
Judging in error detection
Error code
VOSDVOUT
VOSD>VOUT
0
1
Condition of output terminal
short-circuit
Normal
Error code (when output open/short detection function is effective)
Judging in error detection
Error code
Condition of output terminal
VOODVOUT or VOSDVOUT 0 Open or short-circuit
VOOD<VOUT or VOSD>VOUT
1
Normal
*When both output error detection function is effective, Open and short-circuit are undistinguishable.
Basic input pattern of S0 commandWhen output opening/short detection is effective.
After the S0 command is loaded, the first SCK pulse (marked X above) is used to transfer an error detection
result to the 16-bit Shift Register. At this time, the TC62D776CFNAG ignores the SIN input.
8 2011-12-14







TC62D776CFNAG equivalent, schematic
TC62D776CFNAG
Thermal shutdown function (TSD)
If the internal temperature of the IC exceeds 150°C, the thermal shutdown (TSD) circuitry trips, turning off all
constant-current outputs. When the temperature drops below the TSD release threshold, the
TC62D776CFNAG restarts constant-current output.
Since TSD is not intended to protect the IC against permanent damage. it should not be employed actively to
monitor chip temperature.
Output delay function
In order to reduce di/dt caused by simultaneously switching outputs, the TC62D776CFNAG allows for delays
(tDLY (ON), tDLY (OFF)) between contiguous outputs.
Switching time difference between outputs are provided in order as follows;
OUT0 OUT15 OUT7 OUT8 OUT1OUT14 OUT6 OUT9 OUT2 OUT13
OUT5 OUT10 OUT3 OUT12 OUT4 OUT11
Power on reset function (POR)
The TC62D776CFNAG provides a power-on reset to reset all internal data in order to prevent malfunctions.
The POR circuitry works properly only when VDD rises from 0 V. To re-activate the POR circuitry, VDD must be
brought to less than 0.1 V. Internal data is guaranteed to be retained after VDD exceeds 3.0 V.
VDD=3.0V
VDD=2.8 V
VDD waveform
VDD voltage for guaranteed data
VDD voltage for end of reset
VDD=0.1 V
End of POR
VDD=0 V
POR working range Beyond POR working range
POR working range
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