RT5508 datasheet(35/57 Pages) RICHTEK

Nome de Peças	RT5508

Descrição Electrónicos	Speaker Amplifier with Speaker Protection

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Fabricante Electrônico	RICHTEK [Richtek Technology Corporation]

Página de início	http://www.richtek.com

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35 / 57 page

RT5508

is a registered trademark of Richtek Technology Corporation

DS5508-01

March

2017

www.richtek.com

35

ADDR

Byte

Bits

R/W

Name

Description

Default

0x22

1

7

R/W

EN_AMP_OCP_LATCH

1 : Enable amplifier OCP latch

0

6:4

R/W

AUDIO_IN2_SEL

audio_in2 delay selection :

000 : No delay

001 : 0.5

s

010 : 1.0

s

011 : 1.5

s

100 : 2.0

s

101 : 2.5

s

Others : Rsvd

3'b000

3:2

R/W

SLEW_RATE

VBST slew rate when using adaptive

mode :

00 : 2.5mV/

s

01 : 5mV/

s

10 : 20mV/

s

11 : 10mV/

s

2’b01

1:0

R/W

BST_TOT

Level timeout time :

00 : 500

s

01 : 1ms

10 : 2ms

11 : 4ms

2’b01

0x23

1

7:0

R/W

SIG_GAIN

Signal path gain :

SIG_GAIN = DA gain * other analog gain *

10

8’h69

0x24

1

7

R/W

D_VBB_7P5V_EN

Enable to slow the gate driver slew rate for

7.5V operation

0

6

R/W

D_FCCM

Force boost operate in CCM mode

1

5

R/W

D_DCM_EN

DCM enable :

0 : Disable

1 : Enable

1’b0

4

R/W

PSM_EN

PSM enable :

0 : Disable

1 : Enable

1’b0

3:2

-

Reserved

-

1:0

R/W

PSM_THR2

PSM VREF threshold :

00 : 10mV

01 : 20mV

10 : 30mV

11 : 40mV

2’b01

0x25

1

7

R/W

BST_FORCE_FSW3X

Force boost switching frequency from

2MHz to 6MHz

0

6

R/W

BST_AUTO_FSW3X

Auto detect to make boost switching

frequency from 2MHz to 6MHz

0

5:0

R/W

PSM_THR1

PSM IPEAK value setting :

When 6-bit IDAC1 < PSM_THR1, PSM

mode is enabled if PSM_EN and

DCM_EN is on. The actual IPEAK is

calculated as following:

IPEAK ~ (IDAC1(6-bit) * 0.625e-3 *12.2 *

50 /6.1)

–

(slope_comp * (1-VBAT * effi / VBST))

6’b0

Nº de peça semelhante - RT5508

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Descrição semelhante - RT5508

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