LP8551TLXSLASHNOPB datasheet(33/46 Pages) TI2

33 / 46 page

LP8551

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SNVS673E – APRIL 2010 – REVISED SEPTEMBER 2014

8.6.2.7 EEPROM Address 5

Address A5h

EEPROM ADDRESS 5 REGISTER

VBOOST[4:0]

Name

Bit

Access

Description

VBOOST

4:0

R/W

Boost voltage control from 10V to 40V with 1V step. If adaptive boost control is

enabled, this sets the initial start voltage for the boost converter. If adaptive mode

is disabled, this directly sets the output voltage of the boost converter.

0 0000 = 10V

0 0001 = 11V

0 0010 = 12V

...

1 1101 = 39V

1 1110 = 40V

1 1111 = 40V

8.6.2.8 EEPROM Address 7

Address A7h

EEPROM ADDRESS 7 REGISTER

EN_F_RES

HYSTERESIS[1:0]

Name

Bit

Access

Description

EN_F_RES

R/W

Enable PWM output frequency set resistor

0 = Resistor is disabled and PWM output frequency is set with PWM_FREQ EEPROM

1 = PWM frequency set resistor is enabled. RFSET defines the output PWM frequency. See

PWM Frequency Setting for full description of the PWM frequencies.

HYSTERESIS

1:0

R/W

PWM input hysteresis function. Defines how small changes in the PWM input are ignored to

remove constant switching between two values.

00 = OFF

01 = 1-bit hysteresis with 11-bit resolution

10 = 1-bit hysteresis with 10-bit resolution

11 = 1-bit hysteresis with 8-bit resolution

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