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CC2420
SWRS041B Page 13 of 89
6.8 Voltage Regulator
Parameter Min. Typ. Max. Unit Condition / Note
General
Note that the internal voltage
regulator can only supply
CC2420 and no external circuitry.
Input Voltage
2.1 3.0 3.6 V On the VREG_IN pin
Output Voltage
1.7 1.8 1.9 V On the VREG_OUT pin
Quiescent current
13 20 29
A
No current drawn from the
VREG_OUT pin. Min and max
numbers include 2.1 through 3.6
V input voltage
Start-up time
0.3 0.6 ms
6.9 Battery Monitor
Parameter Min. Typ. Max. Unit Condition / Note
Current consumption
6 30 90
A
When enabled
Start-up time
100
s
Voltage regulator already enabled
Settling time
2
s
New toggle voltage programmed
Step size
50 mV
Hysteresis
10 mV
Absolute accuracy
-80 80 mV May be software calibrated for
known reference voltage
Relative accuracy
-50 50 mV
6.10 Power Supply
Parameter Min. Typ. Max. Unit Condition / Note
Current consumption in different
modes (see Figure 25, page 44)
Voltage regulator off (OFF)
Power Down mode (PD)
Idle mode (IDLE)
0.02
20
426
1
A
A
A
Current drawn from VREG_IN,
through voltage regulator
Voltage regulator off
Voltage regulator on
Including crystal oscillator and
voltage regulator
Current Consumption,
receive mode
18.8 mA