MAX16821A Datasheet, PDF (6/25 Pages) Maxim Integrated Products – High-Power Synchronous HBLED Drivers with Rapid Current Pulsing

High-Power Synchronous HBLED
Drivers with Rapid Current Pulsing
Typical Operating Characteristics (continued)
(V_IN = 12V, V_DD = V_CC = 5V, T_A = +25°C, unless otherwise noted.)
LOW-SIDE DRIVER (DL) SINK
AND SOURCE CURRENT
MAX16821A toc07
C_LOAD = 22nF
V_IN = 12V
HIGH-SIDE DRIVER (DH) RISE TIME
MAX16821A toc08
V_IN = 12V
DH RISING
HIGH-SIDE DRIVER (DH) FALL TIME
MAX16821A toc09
C_LOAD = 22nF
V_IN = 12V
3A/div
2V/div
2V/div
100ns/div
LOW-SIDE DRIVER (DL) RISE TIME
MAX16821A toc10
C_LOAD = 22nF
V_IN = 12V
40ns/div
LOW-SIDE DRIVER (DL) FALL TIME
MAX16821A toc11
C_LOAD = 22nF
V_IN = 12V
40ns/div
10,000
FREQUENCY vs. R_T
V_IN = 12V
2V/div
2V/div
1000
40ns/div
FREQUENCY vs. TEMPERATURE
260
258 ^{VIN = 12V}
256
254
252
250
248
246
244
242
240
0
5 10 15 20 25 30 35
TEMPERATURE (°C)
40ns/div
100
30 70 110 150 190 230 270 310 350 390 430 470 510 550
R_T (kΩ)
SYNC, CLKOUT, AND DH WAVEFORMS
MAX16821A toc14
MODE = SGND
RT/SYNC
5V/div
0V
CLKOUT
5V/div
0V
DH
5V/div
0V
1µs/div
SYNC, CLKOUT, AND DL WAVEFORMS
MAX16821A toc15
MODE = V_CC
RT/SYNC
5V/div
0V
CLKOUT
5V/div
0V
DL
5V/div
0V
1µs/div
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