MAX8631XETI 查看數據表（PDF） - Maxim Integrated
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MAX8631XETI Datasheet PDF : 15 Pages
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1x/1.5x/2x White LED Charge Pump with Two
LDOs in 4mm x 4mm Thin QFN
Typical Operating Characteristics (continued)
(VIN = VEN_ = 3.6V, Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
INDIVIDUAL FLASH LED CURRENT
vs. RSETF
1000
100
10
1
1
10
100
RSETF (kΩ)
OPERATING WAVEFORMS (1x MODE)
MAX8631X toc14
VOUT
50mV/div
AC-COUPLED
VIN
IIN
4 MAIN LEDS AT 20mA EACH
400ns/div
20mV/div
AC-COUPLED
2mA/div
AC-COUPLED
OPERATING WAVEFORMS (1.5x MODE)
MAX8631X toc15
VOUT
50mV/div
AC-COUPLED
OPERATING WAVEFORMS (2x MODE)
MAX8631X toc16
VOUT
50mV/div
AC-COUPLED
VIN
IIN
4 MAIN LEDS AT 20mA EACH
400ns/div
20mV/div
AC-COUPLED
2mA/div
AC-COUPLED
VIN
20mV/div
AC-COUPLED
4 MAIN LEDS AT 20mA EACH,
FLASH AT 400mA TOTAL
IIN
2mA/div
AC-COUPLED
400ns/div
VENM_
IOUT
STARTUP AND SHUTDOWN
MAIN LED RESPONSE
MAX8631X toc17
4 MAIN LEDS AT 20mA EACH
5V/div
0V
100mA/div
0A
VOUT
5V/div
0V
1ms/div
STARTUP AND SHUTDOWN
FLASH LED RESPONSE
MAX8631X toc18
5V/div
VENF
0V
4 MAIN LEDS AT 20mA EACH,
400mA TOTAL FLASH
500mA/div
IIN
0A
500mA/div
IOUT
0A
5V/div
VOUT
0V
1ms/div
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