900844 Datasheet, PDF (74/118 Pages) Freescale Semiconductor, Inc – Integrated Power Management IC for Ultra-mobile and Embedded Applications

FUNCTIONAL DEVICE OPERATION
POWER SUPPLIES
V21 or VPWR
PVINYMXYFI 18
V_{OYMXYFI 18}
C_{INYMXYFI 18}
VOUTYMXYFI 18
Controller
V_REF
_
+
Z
CTLVYM XYFI 18
AOACCTLVYMXYFI 18
SPI
Interface
C_{OYMXYFI 18}
GNDCOMMS1
GNDCOMMS2
VOYMXYFI 18
I_{OYMXYFI 18}
Output Monitor
Discharge
Two GND pins shared
between VYMXYFI18,
VYMXYFI , and VYMXGPS
VYMXYFI 18 FAULT
Figure 39. VYMXYFI18 Detailed Internal Block Diagram
Main Features
• Uses V21 or VPWR as the main power supply
• 200 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 36. VYMXYFI18 Register Structure and Bits Description
Name
Bits
Description
CTLVWYMXARF 2:0
AOACCTLVWYMXARF 5:3
Reserved
7:6
VWYMXARFCNT (ADDR 0x4C - R/W - Default Value: 0x24)
VYMXYFI18 State Control
x0 = Reserved
x1 = Reserved
x2 = Reserved
x3 = Reserved
x4 = OFF
x5 = Low Power
x6 = Active
x7 = Active
VYMXYFI18 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
VCCPAOAC
VCCPAOAC 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. VCCPAOAC is actively discharged during shutdown.
VCCPAOAC shares an input voltage pin (PVIN1P5) and a reference ground pin (GND1P5) with VCCPDDR, VAON, VMM,
and the VCCP regulator. Each has independent control. PVIN1P5 is supplied from the V15 voltage.
900844
74
Analog Integrated Circuit Device Data
Freescale Semiconductor