Datasheet

MGC3130
DS40001667C-page 18 Advance Information  2012-2013 Microchip Technology Inc.
4.2.4.4 MGC3130 Power Profile
The MGC3130 power profile is illustrated in Figure 4-6.
FIGURE 4-6: MGC3130 POWER PROFILE
MGC3130 current consumption for the different
operation modes are summarized in Table 4 - 1.
The Processing mode current consumption depends
on the number of active Rx channels, N
RxChannels
, and
can be determined by Equation 4-1.
EQUATION 4-1: PROCESSING MODE
CURRENT
CONSUMPTION
The Self Wake-up mode current consumption depends
on the Approach Detection feature configuration:
Approach Scan and Calibration Scan repetition period.
Changing these parameters results in different current
consumption values.
Figure 4-7 and Figure 4-8 describe the Self Wake-up
mode current consumption according to the Approach
Scan and Calibration Scan period change.
Wake-up IRQ from host
or I²C
TM
start detected
Approach detected
No user interaction
(Time-out)
t
I
I
DS
(1)
=9µA
I
PEAK
(1)
= 20mA
I
SW1
(1)
= 200µA
Deep Sleep Self Wake-up Self Wake-upProcessing
I PEAK : Processing mode with 5 Rx Channels
I
SW1 : Self Wake-up with 150 ms Approach Scan and 10s Calibration Scan
I
SW2 : Self Wake-up with 150 ms Approach Scan and without Calibration Scan
I
DS : Deep Sleep
(1) These are preliminary values @ 3.3V, typical
I
SW2
(1)
= 110µA
TABLE 4-1: CURRENT CONSUMPTION OVERVIEW
Mode Current Consumption Conditions
Processing mode 20 mA V
DD = 3.3V
5 Rx Channels activated
Self Wake-up mode 110 µA V
DD = 3.3V
No Calibration Scan
Approach Scan each 150 ms
200 µA VDD = 3.3V
Calibration Scan each 10s
Approach Scan each 150 ms
Deep Sleep mode 9 µA VDD = 3.3V
I
peak
10 N
RxChannels
2+mA=