TLC5947_17 Datasheet, PDF (7/33 Pages) Texas Instruments – 24-Channel, 12-Bit PWM LED Driver With Internal Oscillator

www.ti.com
TLC5947
SBVS114B – JULY 2008 – REVISED JANUARY 2015
6.7 Switching Characteristics
At V_CC = 3.0 V to 5.5 V, T_A = –40°C to 85°C, C_L = 15 pF, R_L = 150 Ω, R_IREF = 1.6 kΩ, and V_LED = 5.5 V. Typical values at V_CC
= 3.3 V and T_A = 25°C, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
t_R0
t_R1
t_F0
t_F1
f_OSC
Rise time
Fall time
Internal oscillator
frequency
SOUT
OUTn
SOUT
OUTn
10
15 ns
15
40 ns
10
15 ns
100
300 ns
2.4
4
5.6 MHz
t_D0
SCLK↓ to SOUT
t_D1
BLANK↑ to OUT0 sink current off
t_D2
Propagation delay time OUT0 current on to OUT1/5/9/13/17/21 current on
t_D3
OUT0 current on to OUT2/6/10/14/18/22 current on
t_D4
OUT0 current on to OUT3/7/11/15/19/23 current on
15
25 ns
20
40 ns
15
24
33 ns
30
48
66 ns
45
72
99 ns
T_WH0, T_WL0, T_WH1:
V_CC
INPUT⁽¹⁾ 50%
T_WH
T_WL
GND
T_SU0, T_SU1, T_SU2, T_H0, T_H1:
CLOCK
INPUT^{(1) 50%}
T_SU
T_H
DATA/CONTROL
INPUT^{(1) 50%}
(1) Input pulse rise and fall time is 1 ns to 3 ns.
Figure 1. Input Timing
V_CC
GND
V_CC
GND
Copyright © 2008–2015, Texas Instruments Incorporated
Product Folder Links: TLC5947
Submit Documentation Feedback
7