TLC5929 Datasheet, PDF (5/36 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with 7-Bit Global Brightness Control, Power-Save Mode

TLC5929
www.ti.com
SBVS159 – APRIL 2011
ELECTRICAL CHARACTERISTICS (continued)
At V_CC = 3 V to 5.5 V and T_A = –40°C to +85°C. Typical values at V_CC = 3.3 V and T_A = +25°C, unless otherwise noted.
TLC5929
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
ΔI_OLC2
ΔI_OLC3
T_TEF
T_HYS
T_PTW
Line regulation⁽⁴⁾
Load regulation⁽⁵⁾
Thermal error flag threshold
Thermal error flag hysteresis
Pre-thermal warning threshold
All OUTn = on, V_OUTn = V_OUTfix = 0.8 V, BC = 7Fh,
R_IREF = 1.6 kΩ
All OUTn = on, V_OUTn = 0.8 V to 3 V, V_OUTfix = 0.8 V,
BC = 7Fh, R_IREF = 1.6 kΩ
Junction temperature⁽⁶⁾
Junction temperature⁽⁶⁾
Junction temperature⁽⁶⁾
±0.1
±0.5
150
165
5
10
125
138
±1
%/V
±3
%/V
180
°C
20
°C
150
°C
(4) Line regulation is calculated by the formula:
(%) = 100 ^{(IOLC(n) at VCC = 5.5 V) - (IOLC(n) at VCC = 3.0 V)}
D
´
2.5 ´ (I_OLC(n) at V_CC = 3.0 V)
Where 2.5 is the difference between the maximum and minimum V_CC voltage.
(5) Load regulation is calculated by the equation:
(%) = 100 ^{(IOLC(n) at VOUTn = 3 V) - (IOLC(n) at VOUTn = 0.8 V)}
D
´
2.2 ´ (I_OLC(n) at V_OUTn = 0.8 V)
Where 2.2 is the difference between the maximum and minimum V_CC voltage.
(6) Not tested; specified by design.
SWITCHING CHARACTERISTICS (See Figure 1, Figure 2, and Figure 5 through Figure 7)
At V_CC = 3 V to 5.5 V, T_A = –40°C to +85°C, C_L = 15 pF, R_L = 82 Ω, R_IREF = 1.3 kΩ, and V_LED = 5.0 V.
Typical values at V_CC = 3.3 V and T_A = +25°C, unless otherwise noted.
TLC5929
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
t_R0
Rise time
t_R1
t_F0
Fall time
t_F1
t_D0
t_D1
SOUT
OUTn, BC = 7Fh, T_A = +25°C
SOUT
OUTn, BC = 7Fh, T_A = +25°C
SCLK↑ to SOUT↑↓
LAT↑ or BLANK↑↓ to OUT0 sink current on/off,
BC = 7Fh
3
10
23
60
3
10
31
60
15
25
35
65
t_D2
Propagation delay
OUTn on/off to OUTn + 1 on/off, BC = 7Fh
t_D3
LAT↑ to power-save mode by data writing for all output
off
3
11
300
t_D4
SCLK↑ to normal mode operation
20
t_{ON_ERR}
Output on-time error⁽¹⁾
Output on/off data = all '1', BLANK low pulse = 40 ns, BC
= 7Fh
–30
20
f_OSC
Internal oscillator
frequency
12
20
28
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
MHz
(1) Output on-time error (t_{ON_ERR}) is calculated by the formula: t_{ON_ERR} (ns) = t_{OUT_ON} – 40 ns. t_OUTON is the actual on-time of OUTn.
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