TLC5951 Datasheet, PDF (6/46 Pages) Texas Instruments – 24-Channel, 12-Bit PWM LED Driver with 7-Bit Dot Correction and 3-Group, 8-Bit Global Brightness Control

TLC5951
SBVS127B – MARCH 2009 – REVISED DECEMBER 2009
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SWITCHING CHARACTERISTICS
At T_A = –40°C to +85°C, V_CC = 3 V to 5.5 V, C_L = 15 pF, R_L = 100 Ω, R_IREF = 1.2 kΩ, and V_LED = 5.0 V, unless otherwise
noted. Typical values are at T_A = +25°C and V_CC = 3.3 V.
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
t_R0
Rise time
t_R1
GSSOUT, DCSOUT
OUTR0-OUTR7, OUTG0-OUTG7, OUTB0-OUTB7,
with BCR/G/B = FFh and DCRn/Gn/Bn = 7Fh with DC high adjustment
range
6 15 ns
10 30 ns
t_F0
Fall time
t_F1
GSSOUT, DCSOUT
OUTR0-OUTR7, OUTG0-OUTG7, OUTB0-OUTB7,
with BCR/G/B = FFh and DCRn/Gn/Bn = 7Fh with DC high adjustment
range
6 15 ns
10 30 ns
t_D0
GSSCK↑ to GSSOUT, DCSCK↑ to DCSOUT
15 25 ns
t_D1
GSLAT↑ to GSSOUT
50 100 ns
t_D2
XBLNK↓ to OUTR0/G0/B0, OUTR4/G4/B4 off
20 40 ns
GSCKR/G/B↑ to OUTR0/G0/B0, OUTR4/G4/B4 on,
t_D3
with BCR/G/B = FFh and DCRn/Gn/Bn = 7Fh with DC high adjustment
5 18 40 ns
range
GSCKR/G/B↑ to OUTR1/G1/B1, OUTR5/G5/B5 on,
t_D4
with BCR/G/B = FFh and DCRn/Gn/Bn = 7Fh with DC high adjustment
20 42 73 ns
range
GSCKR/G/B↑ to OUTR2/G2/B2, OUTR6/G6/B6 on,
t_D5
Propagation delay
with BCR/G/B = FFh and DCRn/Gn/Bn = 7Fh with DC high adjustment
35 66 106 ns
range
GSCKR/G/B↑ to OUTR3/G3/B3, OUTR7/G7/B7 on,
t_D6
with BCR/G/B = FFh and DCRn/Gn/Bn = 7Fh with DC high adjustment
50 90 140 ns
range
t_D7
Internal latch pulse generation delay from DCSCK
3 5 7 ms
GSLAT↑ to I_OUTRn/Gn/Bn changing by dot correction control
t_D8
(control data are 0Ch → 72h or 72h → 0Ch with DC high adjustment
30 50 ns
range), BCR/G/B = FFh
GSLAT↑ to I_OUTRn/Gn/Bn changing by global brightness control
t_D9
(control data are 19h ≥ E6h or E6h ≥ 19h with DCRn/Gn/Bn = 7Fh with
100 300 ns
DC high adjustment range)
t_{OUT_ON} – T_GSCKR/G/B, GS_DATA = 001h, GSCKR/G/B = 33 MHz,
t_{ON_ERR}
Output on-time error⁽¹⁾ with BCR/G/B = FFh and DCRn/Gn/Bn = 7Fh with DC high adjustment
–15
range
5 ns
(1) Output on-time error (t_{ON_ERR}) is calculated by the formula t_{ON_ERR} (ns) = t_{OUT_ON} – T_GSCKR/G/B. t_{OUT_ON} indicates the actual on-time of
the constant current driver. T_GSCKR is the period of GSCKR, T_GSCKG is the period of GSCKG, and T_GSCKB is the period of GSCKB.
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