900844 datasheet(75/118 Pages) FREESCALE

75 / 118 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

900844

FUNCTIONAL DEVICE OPERATION

POWER SUPPLIES

Figure 40. VCCPAOAC Detailed Internal Block Diagram

Main Features

• Uses V15 as the main power supply.

• 155 mA maximum continuous output current

• Optimized for a 2.2 µF external filter capacitor with a maximum of 10 m

Ω ESR

• Uses an internal pass FET

• The output for each LDO is monitored for over-current conditions and under-voltage events

VCCPDDR

VCCPDDR 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. VCCPDDR is actively discharged during shutdown.

VCCPDDR shares an input voltage pin (PVIN1P5) and a reference ground pin (GND1P5) with the VCCPAOAC, VAON, VMM,

and VCCP regulators, yet each has independent control. PVIN1P5 is supplied from the V15 voltage.

Table 37. VCCPAOACCNT Register Structure and Bits Description

Name

Bits

Description

VCCPAOACCNT (ADDR 0x3D - R/W - Default Value: 0x07)

CTLVCCPAOAC

2:0

VCCPAOAC State Control

x0 = Reserved

x1 = Reserved

x2 = Reserved

x3 = Reserved

x4 = OFF

x5 = Low Power

x6 = Active

x7 = Active

AOACCTLVCCPAOAC

5:3

VCCPAOAC 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

Controller

VOCCPAOAC

V15

PVIN1P5

VOUTCCPAOAC

Output Monitor

IOCCPAOAC

SPI

Interface

CIN1P5

COCCPAOAC

VOCCPAOAC

CTLVCCPAOAC

AOACCTLVCCPAOAC

VCCPAOACFAULT

VREF

GND1P5

Discharge

900844 Datasheet(PDF) 75 Page - Freescale Semiconductor, Inc

900844 Datasheet(HTML) 75 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL