MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I

MP3336 Rev.1.01

www.MonolithicPower.com

21

5/16/2017

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Table 7: Indicator Register

Addr: 0x05

Bit

Bit Name

Access

Default

Description

7

LED_OTAD

RW

0

Adaptive thermal flash current control bit.

130°C

6:4

TUP_I

RW

001

Current ramp-up time per step.

000 = 8µs

001 = 7µs

……

111 = 1µs

3:2

VTH_PAS

RW

01

switches to pass mode from boost mode.

00 = 300mV

01 = 450mV

10 = 600mV

11 = 750mV

1:0

INDI_PWM

RW

00

PWM duty cycle of 31.5kHz in indicator mode.

00 = 2/16

01 = 3/16

10 = 4/16

11 = 5/16

Table 8: LED1 Flash Current Setting Register

Addr: 0x06

Bit

Bit Name

Access

Default

Description

7:0

I1_FL

RW

00110011

LED1 flash current setting bits. 0 to 2000mA,

7.84mA/step (default 00110011 = 400mA).

00000000 = 0mA

......

11111111 = 2000mA

Table 9: LED2 Flash Current Setting Register

Addr: 0x07

Bit

Bit Name

Access

Default

Description

7:0

I2_FL

RW

00110011

LED2 flash current setting bits. 0 to 2000mA,

7.84mA/step (default 00110011 = 400mA).

00000000 = 0mA

......

11111111 = 2000mA