MAX8834Y 데이터 시트보기 (PDF) - Maxim Integrated

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MAX8834Y

Adaptive Step-Up Converters with 1.5A Flash Driver

Maxim Integrated 

MAX8834Y/MAX8834Z

Adaptive Step-Up Converters

with 1.5A Flash Driver

ENABLING OF FLASH MODE BY

LED_EN OR I2C CONTROL

ONE-SHOT FLASH TIMER

Figure 1. One-Shot Flash-Timer Mode

ONE-SHOT FLASH TIMER

ENABLING OF FLASH MODE BY

LED_EN OR I2C CONTROL

MAXIMUM FLASH

SAFETY TIMER

Figure 2. Maximum Flash-Timer Mode

MAXIMUM FLASH TIMER

ENABLING OF FLASH MODE BY

LED_EN OR I2C CONTROL

30ms

Figure 3. Flash Safety Timer Reset Inhibit Period

IIND[4:0]

Figure 4. Blink Function Timing

tIND_OFF

tIND_ON

IND_RU and IND_RD control bits, and the ramp func-

tion is enabled/disabled by the IND_RP_EN bit. The

current regulator increases/decreases the current one-

step every tRAMP/32 until 0mA or IND[4:0] current is

reached. See Figures 5 and 6.

Combining BLINK Timer and Ramp Function

When using the ramp function for INDLED together with

the blink timer, keep the ramp-up timer shorter than the

ON blink timer and the ramp-down timer shorter than

the OFF timer. Failing to comply with this results in the

Maxim Integrated

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