User manual

Atmel AVR32924: UC3-L0 XPLAINED Hardware User’s Guide [APPLICATION NOTE]
32156C−AVR−06/2013
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Power M anagem ent . SchDoc
476/ 4/ 2013 5: 16: 53 PM
UC3- L0 XPLAI NED
ATM EL Nor way
Vest r e Rost en 79
N- 7075 TI LLER
NO RW A Y
PAG E: o f
TI TLE:
Docum ent num ber :
Rev ision: 4
Da t e :
*
*
*
GND
VCC_P3 V3
VCC_P5 V0
3.3V linear regulator with input range from - 4.4V - 18V
GND
GND
VCC_P3 V3
VI N
3
VO UT
2
GND
1
VO UT_ PAD
4
NCP1117L PST33T3G
U300
CPU Po wer Supply M easurem ent Header
VCC_ M CU_ P3 V3
Place on J300 pin1- 2
SNT- 100- BK- G
JS300
1
2
J300
HEADER 1x 2
VCC_ P5 V 0
VCC_P3 V3
10u
+
C301
10u
C300
This r egulat or can handle up t o 18V input voltage and maxim um 1. 0A
load cur r ent , wit h a maxim um volt ag e dr op of 1. 4V. The out put voltage
is 3. 3V ± 2%. The maxim um quiescent cur r ent is 700µA. NO TE! ! t hat
worst -case out put volt age may dr op down t o 3. 0V wit h 4. 4V input
volt age.
USB 2. 0 Input volt ag e specificat ion:
4. 4V - 5. 25V, nominal 5. 0V
NO TE! ! ESR on out put capacit or should be lar ger than
20mOhm to maint ain st able r egulat ion. Hig her values on t he
out put c apacit or will a ls o im p r o v e lo o p s t ab ilit y a n d giv e bet t er
t r ansient r es ponse which r educes out put noise.