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TLC5957 Datasheet, PDF (5/25 Pages) Texas Instruments – TLC5957 48-Channel, 16-Bit ES-PWM LED Driver with Pre-Charge FET, LED OPEN Detection and Caterpillar Cancelling
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7.3 Recommended Operating Conditions
At TA = –40°C to 85°C, unless otherwise noted.
DC CHARACTERISTICS VCC = 3 V to 5.5 V
VCC
Supply voltage
VO
Voltage applied to output
VIH
High level input voltage
VIL
Low level input voltage
IOH
High level output current
IOL
Low level output current
IOLC
Constant output sink current
TA
Operating free air temperature
TJ
Operation junction temperature
AC CHARACTERISTICS, VCC = 3 V to 5.5 V
FCLK(SCLK) Data shift clock frequency
FCLK(GCLK) Grayscale control clock frequency
OUTx0 to OUTx15, x = R, G, B
SIN, SCLK, LAT, GCLK
SIN, SCLK, LAT, GCLK
SOUT
SOUT
OUTx0 to OUTx15, x = R, G, B, 3V ≤ VCC ≤ 4V
OUTx0 to OUTx15, x = R, G, B, 4V < VCC ≤ 5.5V
SCLK
GCLK
TLC5957
SLVSCQ4 – OCTOBER 2014
MIN
NOM
MAX UNIT
3
0.7×VCC
GND
–40
–40
5.5
V
10
V
VCC
V
0.3×VCC
V
–2 mA
2 mA
20
mA
25
85 °C
125 °C
33 MHz
33 MHz
7.4 Thermal Information
THERMAL METRIC(1)
RθJA
RθJC(top)
RθJB
ψJT
ψJB
RθJC(bot)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
TLC5957
RTQ (56 PINS)
27.4
13.6
5.5
0.2
5.5
0.8
UNIT
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
7.5 Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VOH
VOL
VLOD0
VLOD1
VLOD2
VLOD3
VIREF
IIN
ICC0
ICC1
ICC2
ICC3
ICC4
Output voltage
High
Low
LED open detection threshold
Reference voltage output
Input current (SIN, SCLK, LAT, GCLK)
Supply current (VCC)
IOH = –2mA at SOUT
IOL = 2mA at SOUT
LODVTH = 00b
LODVTH = 01b
LODVTH = 10b
LODVTH = 11b
RIREF = 5.97kΩ　(1mA target), BC = 0h, CCR/G/B = 80h
VIN = VCC or GND
SIN/SCLK/LAT/GSCLK = GND, GSn = 0000h, BC = 4h, CCR/G/B = 120h,
VOUTn = 0.6V, RIREF = OPEN, VCC = 4V
SIN/SCLK/LAT/GSCK = GND, GSn = 0000h, BC = 4h, CCR/G/B = 120h,
VOUTn = 0.6V, RIREF = 7.5kΩ (Io = 10mA target) , VCC = 4V
SIN/SCLK/LAT = GND, GCLK = 33MHz, TSU3 = 200ns, XREFRESH = 0,
GSn = FFFFh, BC = 4h, CCR/G/B = 120h, VOUTn = 0.6V,
RIREF = 7.5kΩ (Io = 10mA target) , VCC = 4V
SIN/SCLK/LAT = GND, GCLK = 33MHz, TSU3 = 200ns, XREFRESH = 0,
GSn = FFFFh, BC = 7h, CCR/G/B = 1D2h, VOUTn = 0.6V,
RIREF = 7.5kΩ (Io = 25mA target) , VCC = 4V
In power save mode
MIN
VCC-0.4
0.05
0.15
0.3
0.45
1.184
–1
TYP
0.09
0.19
0.35
0.49
1.209
8
MAX
VCC
0.4
0.15
0.25
0.4
0.55
1.234
1
UNIT
V
V
V
V
V
V
V
µA
10
11
13
20
26 mA
22
28
0.9
1.5
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