MP3336 – DUAL-CHANNEL, FLASH LED DRIVER WITH I

MP3336 Rev.1.01

www.MonolithicPower.com

20

5/16/2017

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Table 5: Flash Timer Setting Register

Addr: 0x03

Bit

Bit Name

Access

Default

Description

7:4

FL_TIM

RW

0001

Flash timer setting bits. 100ms to 1600ms, 100ms/step.

0000 = 100ms

0001 = 200ms

…….

1111 = 1600ms

3

LED_SD

RW

0

LED_MOD and LED1/2_EN resetting control bit.

0 = reset LED_MOD and LED1/2_EN to default value

after flash or torch

1 = no reset

2

LEDT_SD

RW

0

LED_MOD and LED1/2_EN resetting control bit when

NTC fault occurs.

0 = no reset and device continues

1 = reset and device stops

1:0

SW_FS

RW

00

Max Switching frequency setting bits.

00 = 4MHz

01 = 3MHz

10 = 2MHz

11 = 1MHz

Table 6: Low Battery Voltage Setting Register

Addr: 0x04

Bit

Bit Name

Access

Default

Description

7:5

VBL_RUN

RW

111

Low battery voltage setting bits. If VIN drops blow this

voltage during start-up, the current ramping stops. If,

during flash current pulse, the current is decreased until

VIN is higher than its threshold. It works only in flash

mode. 0.1V per step.

000 = 3V

001 = 3.1V

……

110 = 3.6V

111 = disabled

4

VBL_SD

RW

1

1 = device disabled when VIN is less than the threshold

set by VBL_RUN before flash

0 = enable and current ramps up to current set by I_TX

3:0

IL_DC

RW

0100

Input DC current limit setting bits. 1A to 4.2A.

1A to 3A: 250mA/step

0000 = 1A

......

1000 = 3A

>3A: 300mA/step

1001 = 3.3A

......

1100 = 4.2A