POEPHYTEREV-E National Semiconductor, POEPHYTEREV-E Datasheet - Page 64

• Manufacturer Part Number: POEPHYTEREV-E
• Description: BOARD EVAL LM5072, DP83848I
• Manufacturer: National Semiconductor
• Series: PHYTER®r

Specifications of POEPHYTEREV-E

• Main Purpose: Special Purpose DC/DC, Power Over Ethernet
• Outputs And Type: 1, Isolated
• Power - Output: 24W
• Voltage - Output: 3.3V
• Current - Output: 7.3A
• Voltage - Input: 39 ~ 57V
• Regulator Topology: Flyback
• Frequency - Switching: 250kHz
• Board Type: Fully Populated
• Utilized Ic / Part: DP83848, LM5072
• Lead Free Status / RoHS Status: Not applicable / Not applicable

www.national.com
8.2 AC Specs
8.2.1 Power Up Timing
T2.1.1
T2.1.2
T2.1.3
Dual Function Pins
Become Enabled As Outputs
Parameter
Latch-In of Hardware
Configuration Pins
RESET_N
Hardware
X1 clock
Post Power Up Stabilization
time prior to MDC preamble for
register accesses
Hardware Configuration Latch-
in Time from power up
Hardware Configuration pins
transition to output drivers
MDC
Vcc
Description
MDIO is pulled high for 32-bit serial man-
agement initialization
X1 Clock must be stable for a min. of
167ms at power up.
Hardware Configuration Pins are de-
scribed in the Pin Description section
X1 Clock must be stable for a min. of
167ms at power up.
T2.1.2
T2.1.1
64
Notes
input
T2.1.3
output
Min
167
167
32 clocks
Typ
50
Max
Units
ms
ms
ns