MAX5986A MAXIM [Maxim Integrated Products], MAX5986A Datasheet - Page 8

• Manufacturer Part Number: MAX5986A
• Description: IEEE 802.3af-Compliant, High-Efficiency, Class 1,Powered Devices with Integrated DC-DC Converter
• Manufacturer: MAXIM [Maxim Integrated Products]

(T
A
Powered Device with Integrated DC-DC Converter
= +25°C, unless otherwise noted.)
28
24
20
18
12
IEEE 802.3af-Compliant, High-Efficiency, Class 1,
8
10
20
LED CURRENT vs. R
DC-DC CONVERTER STARTUP
30
����������������������������������������������������������������� Maxim Integrated Products 8
5V LOAD TRANSIENT
40
R
SL
(0% TO 50%)
(kI)
I
100µs/div
OUT
50
2ms/div
= 0A
60
SL
70
MAX5986A toc11
MAX5986A toc13
80
V
AC-COUPLED
50mV/div
I
500mA /div
0A
V
1V/div
V
OUT
OUT
OUT
GND
25
20
15
10
Typical Operating Characteristics (continued)
5
0
LED CURRENT vs. LED VOLTAGE
R
R
SL
SL
1.75
= 30.2kI
= 60.4kI
LED VOLTAGE (V)
3.50
MAX5986A/MAX5987A
5.25
7.00
DC-DC CONVERTER STARTUP
5V LOAD TRANSIENT
(50% TO 100%)
R
100
OUT
95
90
85
80
75
70
65
60
55
50
100µs/div
2ms/div
= 6.67I
0
EFFICIENCY vs. LOAD CURRENT
100
200 300
V
WAD
LOAD CURRENT (mA)
MAX5986A toc12
MAX5986A toc14
(V
= 12V
OUT
AUX CONNECTED TO V
400 500
= 5V)
V
AC-COUPLED
50mV/div
I
500mA/div
0A
OUT
V
1V/div
V
OUT
V
V
OUT
GND
DD
DD
= 48V
= 57V
600
700
OUT
800