LTC3589-1 datasheet(7/38 Pages) LINER

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LTC3676/LTC3676-1

3676ff

For more information www.linear.com/LTC3676

elecTrical characTerisTics The

denotes the specifications which apply over the specified operating

junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = PVIN1 = PVIN2 = PVIN3 = PVIN4 = VIN_L2 = VIN_L3 =

VIN_L4 = DVDD = 3.8V. All regulators disabled unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Undervoltage Lockout Rising

Undervoltage Lockout Falling

2.35

2.55

2.45

2.65

Undervoltage Warning

CNTRL[4:2] = 000 (POR Default)

CNTRL[4:2] = 001

CNTRL[4:2] = 010

CNTRL[4:2] = 011

CNTRL[4:2] = 100

CNTRL[4:2] = 101

CNTRL[4:2] = 110

CNTRL[4:2] = 111

2.7

2.8

2.9

3.0

3.1

3.2

3.3

3.4

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

I2C Port

DVVDD

DVDD Input Supply Voltage

1.6

5.5

IDVDD

DVDD Quiescent Current

SCL/SDA = 0kHz

0.3

µA

DVVDD_UVLO DVDD UVLO Level

ADDRESS

LTC3676 Device Address

LTC3676-1 Device Address

0111100[R/W]

0111101[R/W]

VIH

SDA/SCL Input Threshold Rising

%DVDD

VIL

SDA/SCL Input Threshold Falling

%DVDD

IIH

SDA/SCL High Input Current

SDA = SCL = 5.5V

–1

µA

IIL

SDA/SCL Low Input Current

SDA = SCL = 0V

–1

µA

VOL_SDA

SDA Output Low Voltage

ISDA = 3mA

0.4

fSCL

Clock Operating Frequency

400

kHz

tBUF

Bus Free Time Between Stop and Start

Condition

1.3

µs

tHD_STA

Hold Time After Repeated Start Condition

0.6

µs

tSU_STA

Repeated Start Condition Setup Time

0.6

µs

tSU_STO

Stop Condition Setup Time

0.6

µs

tHD_DAT(O)

Data Hold Time Output

900

tHD_DAT(I)

Data Hold Time Input

tSU_DAT

Data Setup Time

100

tLOW

SCL Clock Low Period

1.3

µs

tHIGH

SCL Clock High Period

0.6

µs

Clock/Data Fall Time

CB = Capacitance of BUS Line (pF)

20 + 0.1CB

300

Clock/Data Rise Time

CB = Capacitance of BUS Line (pF)

20 + 0.1CB

300

tSP

Input Spike Suppression Pulse Width

Note 1: Stresses beyond those listed Under Absolute Maximum ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTC3676 is tested under pulsed load conditions such that

TJ ≈ TA. The LTC3676E is guaranteed to meet specifications from

0°C to 85°C junction temperature. Specifications over the –40°C to

125°C operating junction temperature range are assured by design,

characterization and correlation with statistical process controls. The

LTC3676I is guaranteed over the –40°C to 125°C operating junction

temperature range and the LTC3676H is guaranteed over the full –40°C to

150°C operating junction temperature range. High junction temperatures

degrade operating lifetimes; operating lifetime is derated for junction

temperatures greater than 125°C. The junction temperature (TJ in °C) is

calculated from the ambient temperature (TA in °C) and power dissipation

(PD, in Watts), and package to junction ambient thermal impedance

(

JA in Watts/°C ) according to the formula:

TJ = TA + (PD • JA).

Note that the maximum ambient temperature consistent with these

specifications is determined by specific operating conditions in

conjunction with board layout, the rated package thermal impedance and

other environmental factors.

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