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PDF AS1135 Data sheet ( Hoja de datos )
| Número de pieza | AS1135 | |
| Descripción | 13W/30W IEEE 802.3af/at PoE Powered Device | |
| Fabricantes | Akros Silicon | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AS1135 (archivo pdf) en la parte inferior de esta página. Total 29 Páginas | ||
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Datasheet
AS1135
13W/30W IEEE 802.3af/at
PoE Powered Device with Integrated
DC-DC Controller
Version 1.3
June 2009
1 page  
AS1135
PIN-OUT DIAGRAM
Paddle
Ground in
package
bottom
NC 1
VDD48O 2
NC 3
VDD48I 4
GND 5
AS1135
15 CS
14 CSS
13 COMP
12 FB
11 LVMODE
Top View
DATASHEET
Figure 2 - Pin-out Diagram
PIN ASSIGNMENTS
Table 1 - Pin Assignments
Pin I/O
Name
Description
1-
NC No Connect
2 P VDD48O Switched 48V supply output
3-
NC No Connect
4 P VDD48I 48 V positive bus pin, fed by the output of the external diode bridge. This bus requires the
connection of a detection signature capacitor and resistor. Refer to Detection Mode section.
5A
GND Must be connected to paddle ground (GND)
6A
GND Must be connected to paddle ground (GND)
7A
GND Must be connected to paddle ground (GND)
8O
VDD5 Internal 5 volts bus decoupling point
9 A RCURR Current limit pin. Connection to paddle ground sets the current limit to ILIM-AF (for 13W
applications). Open circuit sets the current limit to ILIM-AT (for 30W applications).
10 A RCLASS Classification resistor connection
11 A LVMODE Local Voltage Mode. When pulled high, LVMODE opens the internal FET switch and keeps the
DC-DC controller active. This is a current-mode input pin. It should be pulled to GND when not in
used.
12 A
FB DC-DC Controller feedback point
13 A
COMP DC-DC Controller error amplifier compensation network connection
14 A
CSS DC-DC Controller soft-start capacitor connection point
15 A
CS DC-DC Controller peak-current sense input (low side)
16 O
NDRV DC-DC Controller N-MOSFET gate drive
17 O
VBN DC-DC Controller low-side supply decoupling
18 I
FSEL Frequency Select. This pin sets the switching frequency of the DC-DC converter.
19 O ATDET IEEE® 802.3at PSE detect. High level output indicates availability of higher system power, either
via connection to a Type 2 PSE for pre-802.3at, or via a local power supply.
20 -
NC No Connect
Paddle P
Key: I = Input
GND Local analog ground. This is the negative output from the external diode bridge and is not
isolated from the line input.
O = Output A = Analog signal P = Power
Revision 1.3
5
5 Page 
AS1135
Figure 9 - 48V VDD Load Regulation vs. Temperature
0.4
0.38
0.36
0.34
0.32
0.3
0.28
0.26
0.24
0.22
0.2
-60 -40 -20 0 20 40 60 80 100 120
Ambient Temperature (Degrees C)
DATASHEET
Figure 11 - 48V VDD NDRV vs. Temperature
1.5
1.45
1.4
1.35
1.3
1.25
1.2
1.15
1.1
1.05
1
-60 -40 -20 0 20 40 60 80 100 120
Ambient Temperature (Degrees C)
Figure 10 - Inrush Current vs. Temperature
160
150
140
130
120
110
100
90
80
70
60
-60
-40 -20 0
20 40 60 80 100 120
Ambient Temperature (Degrees C)
Figure 12 - Comp Source vs. Temperature
-60
-65
-70
-75
-80
-85
-90
-95
-60
-40 -20 0 20 40 60 80 100
Ambient Temperature (Degrees C)
120
Revision 1.3
11
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet AS1135.PDF ] | |
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