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| EZ80L925048MOD Datasheet, PDF (27/38 Pages) Zilog, Inc. – eZ80L92 Module is a compact, high-performance Ethernet module | |||
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eZ80L925048MOD
eZ80L92 Module Product Specification
21
Power Supply
The eZ80L92 Module requires a regulated external 3.3 VDC/0.5A power supply.
You may use a Low Dropout Regulator (LDO) to get 3.3 V from 5 V or use the fol-
lowing switcher circuit to generate 3.3 V from unregulated 10-28V power supply.
Power connections follow these conventional descriptions:
Connection
Power
Ground
Circuit
VCC
GND
Device
VDD
VSS
Figure 8 offers two typical power supply examples.
10â28V
V IN
GND
Switcher 10â28V â 3.3V
C1
C2
1000uF
U1
LM2575S-ADJ
1
VIN
FB
OVOUT
4
2
N
/
GO
NF
100n
DF
35
L1
330uH/1A
D1
1A/30V
To Module
R1
5k6
1%
R2
3k3
1%
VDD
3.3V
C3
470uF/6.3V
Low ESR
GND
4-6V
VCC
GND
LDO 5V â 3.3V
U1
LM3940
VI
G VO
N
D
C1
100n
VDD
3.3V
C3 Low ESR
470uF/6.3V
GND
Figure 8. Power Supply Examples
PS017005-0903
PRELIMINARY
Onboard Component Description
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