AS3677 datasheet(11/68 Pages) AMSCO

Part #	AS3677

Description	Triple Channel Lighting Management Unit with DCDC step/up, ALS, 2xDLS(=DBC) and RGB Driver

PDF	68 Pages

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Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

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AS3677

Datasheet - D e ta i l e d D e s c r i p t i o n

8.2

Step Up DC/DC Converter

The Step Up DC/DC Converter is a high-efficiency current mode PWM regulator, providing output voltage up to e.g.

25V/50mA. A constant switching-frequency results in a low noise on the supply and output voltages.

Figure 13. Step Up DCDC Converter Internal Block Diagram

Table 6. LDO Voltage

Addr: 07h

LDO Voltage

This register sets the output voltage (VANA) for the LDO.

Bit

Bit Name

Default Access

Description

4:0

ldo_voltage

00000b

R/W

Controls LDO voltage selection.

00000b

1.8V

...

LSB=50mV

11111b

3.35V

Table 7. Step Up DC/DC Converter Parameters

Symbol

Parameter

Condition

Min

Typ

Max

Unit

IVDD

Quiescent Current

Pulse skipping mode.

200

µA

)

" *

(

( $

,-..//01

-..2 +

2 3

-..

-..0

5678

AS3677

AS3677 Datasheet(PDF) 11 Page - ams AG

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