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MAX16806

EEPROM-Programmable, High-Voltage, 350mA LED Drivers with LED Current Foldback

Maxim Integrated 

MAX16805/MAX16806

EEPROM-Programmable, High-Voltage,

350mA LED Drivers with LED Current Foldback

Electrical Characteristics (continued)

(VIN = VEN = 12V, CV5 = 0.1μF, IV5 = 0, CS- = GND, RSENSE = 0.56Ω, VDIM = 4V, DGND = GND, TFP/SCL = 5V, TFN/SDA = 0V,

SW = CFD = Open, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

EEPROM

VIN Voltage for EEPROM

Programming

EEPROM Data-Retention Time

I2C DIGITAL INPUTS (TFP/SCL, TFN/SDA) (Note 5)

20

22

24

V

10

Years

Logic Input-Voltage High

VIH

Logic Input-Voltage Low

VIL

Input Capacitance

2.8

V

0.8

V

5

pF

SDA Output Voltage Low

VOL

I2C INTERFACE TIMING (Figure 1)

ISINK = 3mA

0.4

V

Serial Clock Frequency

Bus Free Time Between STOP

and START Condition

fSCL

tBUF

400

kHz

1.3

µs

START Condition Hold Time

Clock Low Period

Clock High Period

Repeat START Condition Setup

Time

tHD:STA

tLOW

tHIGH

tSU:STA

0.6

µs

1.3

µs

0.6

µs

0.6

µs

Data Hold Time

A master device must provide a hold

time of at least 300ns for the SDA signal

tHD:DAT (referred to VIL of the SCL signal) in order

0

to bridge the undefined region of SCL’s

falling edge

0.9

µs

Data Setup Time

Receive SCL/SDA Rise Time

tSU:DAT

tR

100

ns

300

ns

Receive SCL/SDA Fall Time

tF

250

ns

STOP Condition Setup Time

tSU:STO

0.6

µs

Pulse Width of Spike Suppressed

tSP

50

ns

Transmit SDA Fall Time

ISINK ≤ 6mA, CB ≤ 400pF (Note 6)

250

ns

Note 1: All devices 100% production tested at TJ = +25°C. Limits over the operating temperature range are guaranteed by design.

Note 2: Resistors were added from OUT to CS+ to aid with the power dissipation during testing.

Note 3: Dropout is measured as follows: Connect a resistor from OUT to CS+. Connect RSENSE = 0.56Ω from CS+ to CS-.

Set VIN = VOUT +3V (record VOUT as VOUT1). Reduce VIN until VOUT = 0.97 x VOUT1 (record as VIN2 and VOUT2).

ΔVDO = VIN2 - VOUT2.

Note 4: tON time includes the delay and the rise time needed for IOUT to reach 90% of its final value. tOFF time is the time needed

for IOUT to drop below 10%. See the Typical Operating Characteristics. tON and tOFF are tested with 13Ω from OUT to CS+.

Note 5: TPF/SCL (SCL for MAX16805) and TPN/SDA (SDA for the MAX16805) are I2C interface compatible only when the

MAX16805/MAX16806 are the only parts on the bus for production programming.

Note 6: CB is the total bus capacitance.

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