Table 3-5. Mako's Ldo And Supplies - Motorola APX 7000 Detailed Service Manual

3-36
3.2.2.1 DC Distribution Major Components
The controller's DC section is made up of MAKO and external regulators. This section will give an
overview of the schematics and circuitry that makes up the major supplies of the DC architecture.
3.2.2.1.1 MAKO
MAKO (U6501) is a custom power management IC manufactured by Atmel. MAKO controls almost
all of the LDO supplies to the controller.
feed them. Figure 3-25
accessed to verify operation.
be accessed. MAKO is also responsible for the timing sequence for the enabling of the regulators
which is discussed further in
Name
MECH_SW
UNSW_B+
SW_B+
V_SAVE
VCC_1.875
VCC_1.55
VCC_2.775D
VCC_2.775
VCC_2.8
VCC_5.0A
VCC_3.3
VCC_3.0A
shows all of MAKO's LDOs their voltage level and components that can be
Figure 3-25
section 3.1.3.7.1

Table 3-5. MAKO's LDO and Supplies

Ref
F_MECH_SW ON/OFF Switch. Radio on when GND
F_UNSW_B+ Radio Battery Voltage
R6505_6 Radio Supply Voltage
C6538_6 LDO Output Present When Battery is Attached
C4001_4 LDO Output
R6561_6 LDO Output
R4011_4 LDO Output
R6563_6 LDO Output
R6564_6 LDO Output
R6565_6 LDO Output
R6566_6 LDO Output
R6567_6 LDO Output
Table 3-5 illustrates all of MAKO's LDO and the supplies that
also shows where the battery supply and on off switch can
and section 3.1.3.7.3
Description
Theory of Operation
on pages 3-20 and 3-21.
Level
GND
6 V – 9 V
6 V – 9 V
2.5 V
1.875 V
1.55 V
2.775 V
2.775 V
2.8 V
5.0 V
3.3 V
3.0 V
: Controller