MAX8722C Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX8722C Datasheet PDF : 21 Pages
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Low-Cost CCFL Backlight Controller
Typical Operating Characteristics
(Circuit of Figure 1. VBATT = 12V, VCC = VDD, VSHDN = 5.4V, TA = +25°C, unless otherwise noted.)
LOW INPUT-VOLTAGE
OPERATION (VBATT = 8V)
MAX8722C toc01
0V A
HIGH INPUT-VOLTAGE
OPERATION (VBATT = 20V)
MAX8722C toc02
0V A
LINE TRANSIENT RESPONSE
MAX8722C toc03
0V A
0V B
0V B
0V B
C
0V
D
0V
10μs/div
A: VIFB, 2V/div
B: VVFB, 2V/div
C: VLX1, 10V/div
D: VLX2, 10V/div
C
0V
D
0V
10μs/div
A: VIFB, 2V/div
B: VVFB, 2V/div
C: VLX1, 10V/div
D: VLX2, 10V/div
20μs/div
A: VVFB, 2V/div
B: VIFB, 2V/div
C: VLX1, 10V/div
D: VBATT, 10V/div
C
0V
20V
10V D
0V
LINE TRANSIENT RESPONSE
MAX8722C toc04
0V A
0V B
20μs/div
A: VVFB, 2V/div
B: VIFB, 2V/div
C: VLX1, 10V/div
D: VBATT, 10V/div
C
0V
20V
10V D
0V
MINIMUM BRIGHTNESS STARTUP
WAVEFORM (VCNTL = 0)
MAX8722C toc05
A
0V
B
0V
0V
C
2ms/div
A: VIFB, 2V/div
B: VVFB, 2V/div
C: DPWM, 5V/div
MINIMUM BRIGHTNESS
DPWM OPERATION (VCNTL = 0)
MAX8722C toc06
0V A
0V B
2ms/div
A: VIFB, 1V/div
B: VVFB, 2V/div
C: DPWM, 5V/div
0V C
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