LTC4076 datasheet(3/16 Pages) LINER

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LTC4076

4076fa

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

ITRIKL

Trickle Charge Current

VBAT < VTRIKL; RIDC = 1.25k

100

VBAT < VTRIKL; RIUSB = 2.1k

47.5

VTRIKL

Trickle Charge Threshold Voltage

VBAT Rising

2.8

2.9

Hysteresis

100

VUVDC

DCIN Undervoltage Lockout Voltage

From Low to High

4.15

4.3

Hysteresis

200

VUVUSB

USBIN Undervoltage Lockout Voltage

From Low to High

3.8

3.95

4.1

Hysteresis

200

VASD-DC

VDCIN – VBAT Lockout Threshold

VDCIN from Low to High, VBAT = 4.2V

140

180

220

VDCIN from High to Low, VBAT = 4.2V

VASD-USB

VUSBIN – VBAT Lockout Threshold

VUSBIN from Low to High

140

180

220

VUSBIN from High to Low

VEN



EN Input Threshold Voltage

0.4

0.7

REN



EN Pulldown Resistance

●

MΩ

VHPWR

HPWR Input Threshold Voltage

0.4

0.7

RHPWR

HPWR Pulldown Resistance

●

MΩ

VCHRG



CHRG Output Low Voltage

ICHRG = 5mA

0.35

0.6

VPWR



PWR Output Low Voltage

IPWR = 5mA

0.35

0.6

ΔVRECHRG

Recharge Battery Threshold Voltage

VFLOAT – VRECHRG, 0°C < TA < 85°C

100

135

tRECHRG

Recharge Comparator Filter Time

VBAT from High to Low

tTERMINATE

Termination Comparator Filter Time

IBAT Drops Below Termination Threshold

0.8

1.5

2.2

tSS

Soft-Start Time

IBAT = 10% to 90% Full-Scale

175

250

325

µs

RON-DC

Power FET “ON” Resistance

400

mΩ

(Between DCIN and BAT)

RON-USB

Power FET “ON” Resistance

550

mΩ

(Between USBIN and BAT)

TLIM

Junction Temperature in

105

°C

Constant-Temperature Mode

The ● denotes the speciﬁcations which apply over the full operating

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

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 LTC4076E is guaranteed to meet the performance

speciﬁcations from 0°C to 85°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: Guaranteed by long term current density limitations.

Note 7: VCC is greater of DCIN or USBIN

ELECTRICAL CHARACTERISTICS

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