Analog Integrated Circuit Device Data



Freescale Semiconductor

11

34844

ELECTRICAL CHARACTERISTICS

STATIC AND DYNAMIC ELECTRICAL CHARACTERISTICS

OVER-VOLTAGE PROTECTION (CONTINUED)

Over-voltage Clamp - OVP Register Table:

OVP6H

OVP = 6h

26

28

30

V

OVP5H

OVP = 5h

23

24

25

V

OVPHW

Over-voltage threshold,

Set by Hardware, Voltage at A0/SEN

6.15

6.5

6.85

V

ISINK_OVP

A0/SEN Sink Current, TA=25°C

70

100

130

A

BOOST

fSW0

Switching Frequency (BST [1:0]=0)

0.14

0.16

0.18

MHz

fSW1

Switching Frequency (BST [1:0]=1) (Default)

0.29

0.32

0.35

MHz

fSW2

Switching Frequency (BST [1:0]=2)

0.59

0.65

0.72

MHz

fSW3

Switching Frequency (BST [1:0]=3)

1.17

1.30

1.42

MHz

fSW

Boost Switching Frequency

0.29

0.32

0.35

MHz

DMIN

Minimum Duty Cycle

-

10

15

%

DMAX

Maximum Duty Cycle

80

85

-

%

tSS

Soft Start Period

-

6.5

-

ms

tTR

Boost Switch Rise Time

-

15

-

ns

(10)

tF

Boost Switch Fall Time

-

25

-

ns

(10)

PWM GENERATOR

fPWMS

PWM Frequency Range

M/~S = Low (Slave Mode)

110

-

27000

Hz

(10)

fPWMM

PWM Frequency, M/~S = High (Master Mode)

FPWM Register = 768

FPWM Register = 192,000

25000

103

27000

110

29000

112

Hz

tfPWM

PWM dimming resolution

-

0.39

-

%

PWM PIN (DIRECT PWM CONTROL)

tPWM_IN

Input PWM Pin Minimum Pulse

150

-

-

ns

(10)

fPWM

Input PWM Frequency Range

110

-

27000

Hz

PHASE LOCK LOOP

fCKS

CK Slave Mode Frequency Lock Range, M/~S = Low (Slave Mode)

110

-

27000

Hz

(11)

fCKS_JITTER

CK Slave Mode Input Jitter, M/~S = Low (Slave Mode)

-

-

0.1

%

(10)

TS_ACQ

Slave Mode Acquisition Time, M/~S = Low (Slave Mode)

FPWMS=27 kHz

FPWMS=110 Hz

-

-

50

2000

-

-

ms

fCKMASTER

CK Frequency (Master Mode)

FPWM Register = 768

FPWM Register = 192,000

25000

103

27000

110

29000

112

Hz

Notes

10.

Guaranteed by design

11.

Special considerations should be made for frequencies between 110 Hz to 1.0 KHz. Please refer to Functional Device Operation for further details.

Table 4. Static and Dynamic Electrical Characteristics (continued)

Characteristics noted under conditions VIN = 12 V, VOUT = 42 V, PWM = VDC1, M/~S = VDC1, PIN & NIN = VDC1, -40C  TA  105C,

PGND = 0 V, unless otherwise noted.

Symbol

Characteristic

Min

Typ

Max

Unit

Notes