900844 Datasheet, PDF (72/118 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 VPMIC)
VOPNL18 VOUTPNL18
Controller
_
V REF
+
Z
CTLVPNL 18
AOACCTLVPNL 18
SPI
Interface
COPN L 1 8
GND2P 1
( Shared with VCC180 and VPMIC)
VOPN L 18
IOPN L 1 8
Discharge
Output Monitor
VPNL 18 FAULT
Figure 37. VPNL18 Detailed Internal Block Diagram
Main Features
• Uses V21 as the main power supply
• 225 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 34. VPNL18 Control Register Structure and Bits Description
Name
Bits
Description
VPANEL18CNT (ADDR 0x46 - R/W - Default value: 0x24)
CTLVPANEL18
2:0 VPNL18 State Control
x0 = Reserved
x1 = Reserved
x2 = Reserved
x3 = Reserved
x4 = OFF
x5 = Low Power
x6 = Active
x7 = Active
AOACCTLVPANEL18 5:3 VPNL18 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
VPMIC
VPMIC 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. VPMIC is actively discharged during shutdown.
VPMIC shares an input voltage pin (PVIN2P1) and a reference ground pin (GND2P1) with VCC180 and VPNL18 regulators,
yet each has independent control. PVIN2P1 is supplied from the V21 voltage.
900844
72
Analog Integrated Circuit Device Data
Freescale Semiconductor