13892 datasheet(74/161 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

13892

FUNCTIONAL DEVICE OPERATION

SUPPLIES

BUCK SWITCHER CORE

Table 45. PLL Main Characteristics

Parameter

Condition (58)

Min

Typ

Max

Units

Frequency

Accuracy

100

ppm

Bias Current

PLLEN = 1

μA

1 Buck Switcher active

100

150

μA

2 Buck Switchers active

115

170

μA

3 Buck Switchers active

130

190

μA

4 Buck Switchers active

145

210

μA

Start up Time

Cold Start

700

PFM to PWM

600

Notes

58.

Clock input to PLL is 32.768 kHz

Table 46. PLL Control Registers

Name

R/W Reset Signal Reset

State

Description

PLLEN

R/W

RESETB

1 = Forces PLL on

0 = PLL automatically enabled

PLLX[2:0]

R/W

RESET

100

Selects PLL multiplication factor

Table 47. Buck Switchers (SW1, 2, 3, 4) Output Voltage Programmability

Set point

SWx[4:0]

SWx Output, SWxHI = 0 (Volts)

SWx Output (59), SWxHI = 1 (Volts)

00000

0.600

1.100

00001

0.625

1.125

00010

0.650

1.150

00011

0.675

1.175

00100

0.700

1.200

00101

0.725

1.225

00110

0.750

1.250

00111

0.775

1.275

01000

0.800

1.300

01001

0.825

1.325

01010

0.850

1.350

01011

0.875

1.375

01100

0.900

1.400

01101

0.925

1.425

01110

0.950

1.450

01111

0.975

1.475

10000

1.000

1.500

10001

1.025

1.525

10010

1.050

1.550

10011

1.075

1.575

10100

1.100

1.600

10101

1.125

1.625

10110

1.150

1.650

10111

1.175

1.675

11000

1.200

1.700

11001

1.225

1.725

11010

1.250

1.750

11011

1.275

1.775

11100

1.300

1.800

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