MAX8831(2008) View Datasheet(PDF) - Maxim Integrated

Part Name

Description

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MAX8831
(Rev.:2008)

High-Efficiency, White LED Step-Up Converter with I2C Interface in 2mm x 2mm WLP

Maxim Integrated 

High-Efficiency, White LED Step-Up Converter

with I2C Interface in 2mm x 2mm WLP

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 3.6V, VGND = VPGND = 0V, VDD = 1.8V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

LX Leakage Current

OSCILLATOR

Operating Frequency

Maximum Duty Cycle

Minimum On-Time

COMP

Soft-Start Charge Current

COMP Input Resistance to GND

I2C INTERFACE

CONDITIONS

VIN = VLX = 5.5V, VDD = GND

TA = +25°C

TA = +85°C

VLED1 or VLED2 = 0.2V

Skip mode

Step-up converter off

MIN TYP MAX UNITS

0.01

1

µA

0.1

1.8

2

2.2

MHz

87

92

100

%

30

ns

-20

µA

20

kΩ

SDA, SCL Logic Input High

Voltage

VDD = 1.6V to 5.5V

0.7 x

VDD

V

SDA, SCL Logic Input Low

Voltage

SDA Output Low Voltage

SDA, SCL Logic Input Current

FAULT PROTECTION

Thermal Shutdown

Thermal-Shutdown Hysteresis

Output Overvoltage Threshold

Output Overvoltage Hysteresis

Open LED_ Sense Voltage

VDD = 1.6V to 5.5V

ISDA = 3mA

VIL = 0V or VIH = 5.5V

TA = +25°C

TA = +85°C

Temperature rising

VOUT rising

LED_ enabled, measured at LED_

0.3 x

VDD

V

0.03 0.4

V

0.01

1

µA

0.1

+160

°C

20

°C

28

30

V

4

V

100

120

mV

Shorted LED_ Sense Voltage

LED_ enabled, measured at LED_, VOUT = 10V

VOUT VOUT

- 2.2V - 0.7V

V

Open/Short LED Debounce Timer

16

ms

_______________________________________________________________________________________ 3

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