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1017
SAM4CP [DATASHEET]
43051E–ATPL–08/14
45.5
Embedded Analog Peripherals Characteristics
45.5.1 Core Voltage Regulator
Notes: 1.
Current needed to charge external bypass/decoupling capacitor network.
A ceramic capacitor must be connected between VDDIN and the closest GND pin of the device.
This decoupling capacitor is mandatory to reduce inrush current and to improve transient response and
noise rejection.
To ensure stability, an external output capacitor, C
OUT
must be connected between the VDDOUT and the
closest GND pin of the device. The ESR (Equivalent Series Resistance) of the capacitor must be in the
range of 0.01 to 10
Ω
.
Solid tantalum, and multilayer ceramic capacitors are all suitable as output capacitor. An additional 100nF
bypass capacitor between VDDOUT and the closest GND pin of the device helps decrease output noise and
improves the load transient response.
2.
3.
Table 45-10. Core Voltage Regulator Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
V
VDDIN
Supply Voltage Range (VDDIN)
2.5
3.3
3.6
V
V
VDDOUT
DC Output Voltage
Normal Mode
Standby Mode
—
1.2
0
—
V
I
LOAD
Maximum DC Output Current
V
VDDIN
> 2.5V T
J
= 100oC
—
—
120
mA
ACC
Output Voltage Total Accuracy
I
LOAD
= 0.8 mA to 120 mA
V
VDDIN
= 2.5V to 3.6V
T
J
= [-40oC to 100oC]
I
LOAD
= 0. See note
(1)
.
-5
—
5
%
I
INRUSH
Inrush current
—
—
400
mA
I
VDDIN
Current Consumption (VDDIN)
Normal Mode; I
Load
= 0 mA
Normal Mode; I
Load
= 120 mA
Standby Mode;
—
5
500
0.02
1
μ
A
C
IN
Input Decoupling Capacitor
(2)
1
—
—
μ
F
C
OUT
Output Capacitor
(3)
Capacitance
ESR
0.7
0.01
2.2
10
10
μ
F
Ω
t
ON
Turn on Time
C
OUT
= 2.2
μ
F, V
VDDOUT
reaches 1.2V
(+/- 3%)
—
500
—
μ
s
t
OFF
Turn off Time
C
OUT
= 2.2
μ
F
—
—
40
ms