LTC4075EDD Ver la hoja de datos (PDF) - Linear Technology

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LTC4075EDD

Dual Input USB/AC Adapter Standalone Li-Ion Battery Chargers

Linear Technology 

LTC4075/LTC4075X

ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VDCIN = 5V, VUSBIN = 5V unless otherwise noted.

SYMBOL

VASD-DC

VASD-USB

VENABLE

RENABLE

V⎯C⎯H⎯R⎯G

V⎯P⎯W⎯R

VUSBPWR

ΔVRECHRG

tRECHRG

tTERMINATE

tSS

RON-DC

RON-USB

TLIM

PARAMETER

VDCIN – VBAT Lockout Threshold

VUSBIN – VBAT Lockout Threshold

ENABLE Input Threshold Voltage

ENABLE Pulldown Resistance

⎯C⎯H⎯R⎯G Output Low Voltage

⎯P⎯W⎯R Output Low Voltage

USBPWR Output Low Voltage

Recharge Battery Threshold

Recharge Comparator Filter Time

Termination Comparator Filter Time

Soft-Start Time

Power FET “ON” Resistance

(Between DCIN and BAT)

Power FET “ON” Resistance

(Between USBIN and BAT)

Junction Temperature in

Constant-Temperature Mode

CONDITIONS

VDCIN from Low to High, VBAT = 4.2V

VDCIN from High to Low, VBAT = 4.2V

VUSBIN from Low to High

VUSBIN from High to Low

I⎯C⎯H⎯R⎯G = 5mA

I⎯P⎯W⎯R = 5mA

IUSBPWR = 300µA

VFLOAT – VRECHRG, 0°C < TA < 85°C

VBAT from High to Low

IBAT Drops Below Termination Threshold

IBAT = 0 to Full-Scale

MIN TYP MAX UNITS

140

180

220

mV

20

50

80

mV

140

180

220

mV

20

50

80

mV

0.4

0.7

1

V

● 1.2

2

5

MΩ

0.35

0.6

V

0.35

0.6

V

0.35

0.6

V

65

100

135

mV

3

6

9

ms

0.8

1.5

2.2

ms

175

250

325

µs

400

mΩ

550

mΩ

105

°C

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LTC4075E/LTC4075XE are guaranteed to meet the

performance specifications from 0°C to 70°C. Specifications over the

–40°C to 85°C operating temperature range are assured by design,

characterization and correlation with statistical process controls.

Note 3: Failure to correctly solder the exposed backside of the package to

the PC board will result in a thermal resistance much higher than 40°C/W.

See Thermal Considerations.

Note 4: Supply current includes IDC and ITERM pin current (approximately

100µA each) but does not include any current delivered to the battery

through the BAT pin.

Note 5: Supply current includes IUSB and ITERM pin current

(approximately 100µA each) but does not include any current delivered to

the battery through the BAT pin.

Note 6: This parameter is not applicable to the LTC4075X.

Note 7: Guaranteed by long term current density limitations.

4075Xf

3

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