5.3

4.1

Control = 00 - FF - 07

TIME (200 Ps/DIV)

+

-

+

-

+

-

+

-

FB

OUT

R

S

R

R

R

Duty control

1 MHz clock

OVPCOMP

ERRORAMP

SLOPER

OLPCOMP

RESETCOMP

LOOPC

VREF

+

-

LP3936

SNVS259D – NOVEMBER 2003 – REVISED MAY 2013

www.ti.com

Figure 13. Magnetic Boost DC/DC Converter – Boost Topology with Protection Circuitry

Boost Output Voltage Control

User can control the boost output voltage by boost output 8-bit register.

8-Bit Boost Output Voltage Control Register Description

Boost[7:0]

BOOST Output Voltage

Register 0Dh

(typical)

Binary

Hex

0000 0000

00

4.10

0000 0001

01

4.25

0000 0011

03

4.40

0000 0111

07

4.55 Default

0000 1111

0F

4.70

0001 1111

1F

4.85

0011 1111

3F

5.00

0111 1111

7F

5.15

1111 1111

FF

5.30

Figure 14. Boost Output Voltage Control

14

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