900844 Datasheet, PDF (71/118 Pages) Freescale Semiconductor, Inc – Integrated Power Management IC for Ultra-mobile and Embedded Applications

FUNCTIONAL DEVICE OPERATION
POWER SUPPLIES
V21
PVIN 2P1
CIN 2P1
VOCC180 VOUTCC180
COC C180
GN D2 P1
Controller
_
V REF
+
Z
VOC C 180
IOC C 1 8 0
Discharge
Output Monitor
CTLVCC180
AOACCTLVCC 180
SPI
Interface
VCC180 FAU LT
Figure 36. VCC180 Detailed Internal Block Diagram
Main Features
• Uses V21 as the main power supply
• 390 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 33. VCC180CNT Register Structure and Bits Description
Name
Bits
Description
CTLVCC180
2:0
AOACCTLVCC180 5:3
Reserved
7:6
VCC180CNT (ADDR 0x43 - R/W - 0x3C)
VCC180 State Control
x0 = Reserved
x1 = Reserved
x2 = Reserved
x3 = Reserved
x4 = OFF
x5 = Low Power
x6 = Active
x7 = Active
VCC180 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
VPNL18
VPNL18 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. VPNL18 is actively discharged during shutdown.
VPNL18 shares an input voltage pin (PVIN2P1) and a reference ground pin (GND2P1) with VCC180 and VPMIC regulators,
yet each has independent control. PVIN2P1 is supplied from the V21 voltage.
Analog Integrated Circuit Device Data
Freescale Semiconductor
900844
71