900844 Datasheet, PDF (73/118 Pages) Freescale Semiconductor, Inc – Integrated Power Management IC for Ultra-mobile and Embedded Applications

FUNCTIONAL DEVICE OPERATION
POWER SUPPLIES
PVIN 2P1
(Shared with VCC180 and VPNL18)
VOPMIC
VOUTPMIC
Controller
_
V REF
+
Z
CTLVPMIC
AOACCTLVPMIC
SPI
Interface
COPMIC
GND2P 1
(Shared with VCC180 and VPNL18)
V OPMIC
IOPMIC
Discharge
Output Monitor
VPMICFAULT
Figure 38. VPMIC Detailed Internal Block Diagram
Main Features
• Uses V21 as the main power supply
• 100 mA maximum continuous output current
• Optimized for a 2.2 µF external filter capacitor with a maximum of 10 mΩ ESR
• Uses an internal pass FET
• The output for each LDO is monitored for over-current conditions and under-voltage events
Table 35. VPMIC Register Structure and Bits Description
Name
Bits
Description
CTLVPMIC
2:0
AOACCTLVPMIC 5:3
VPMICCNT (ADDR 0x41 - R/W - Default Value: 0x07)
VPMIC State Control
x0 = Reserved
x1 = Reserved
x2 = Reserved
x3 = Reserved
x4 = OFF
x5 = Low Power
x6 = Active
x7 = Active
VPMIC State Control during AOAC Exit (when the Exit pin is EXITSTBY pin is asserted). These bits will be
initialized by the system SPI controller after power up.
X0 = Do not copy
x1 = Do not copy
x2 = Do not copy
x3 = Do not copy
x4 = OFF
x5 = Low Power
x6 = Active
x7 = Active
Reserved
7:6 Reserved
VYMXYFI18
VYMXYFI18 is a low drop-out (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and
high PSRR, with a low quiescent current and fast transient response. VYMXYFI18 is actively discharged during shutdown.
VYMXYFI18 can be supplied by either the V21 output voltage (V21) or directly from the VPWR node. Using V21 as the input
voltage supply offers enhanced thermal performance and higher efficiency. Using the VPWR node can offer enhanced
performance against noise coupling from an output of a DC/DC regulator. Users are encouraged to take the resulting thermal
dissipation in account when supplying VYMXYFI18 directly from VPWR. For more information about package thermal
capabilities, reference Thermal Management.
Analog Integrated Circuit Device Data
Freescale Semiconductor
900844
73