LTC4155 View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC4155

Dual-Input Power Manager/ 3.5A Li-Ion Battery Charger with I2C Control and USB OTG

Linear Technology 

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LTC4155

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating

junction temperature range, otherwise specifications are at TA ≈ TJ = 25°C (Note 2). VBUS = 5V, BATSNS = 3.7V, DVCC = 3.3V,

RCLPROG1 = RCLPROG2 = 1.21k, RPROG = 499Ω, unless otherwise noted.

SYMBOL PARAMETER

CONDITIONS

MIN TYP MAX

UNITS

IIL,SDA,SCL

VOL

fSCL

tBUF

Input Leakage Low

Digital Output Low (SDA)

Clock Operating Frequency

Bus Free Time Between STOP and

START Condition

SDA, SCL = 0V

ISDA = 3mA

–1

1

μA

0.4

V

400

kHz

1.3

μs

tHD_SDA

Hold Time After (Repeated) START

Condition

0.6

μs

tSU_SDA

Repeated START Condition Set-Up

Time

0.6

μs

tSU_STO

tHD_DAT(OUT)

tHD_DAT(IN)

tSU_DAT

tLOW

tHIGH

tf

tr

tSP

STOP Condition Time

Data Hold Time

Input Data Hold Time

Data Set-Up Time

Clock LOW Period

Clock HIGH Period

Clock Data Fall Time

Clock Data Rise Time

Spike Suppression Time

0.6

μs

0

900

ns

0

ns

100

ns

1.3

μs

0.6

μs

20

300

ns

20

300

ns

50

ns

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 LTC4155E is tested under pulsed load conditions such that

TJ ≈ TA. The LTC4155E is guaranteed to meet performance 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 LTC4155I is guaranteed over the full –40°C to 125°C operating

junction temperature range. The junction temperature (TJ, in °C) is

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

(PD, in watts) according to the formula:

TJ = TA + (PD • θJA), where the package thermal impedance

θJA = 43°C/W)

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 resistance and

other environmental factors.

Note 3. VMAX is the maximum of VBUS or BATSNS

Note 4. Total input current is IVBUSQ + VCLPROG/RCLPROG • (hCLPROG + 1).

4155fc

8

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