LTC4085EDE-3 データシートの表示（PDF） - Linear Technology

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LTC4085EDE-3

USB Power Manager with Ideal Diode Controller and 3.95V Li-Ion Charger

Linear Technology 

LTC4085-3/LTC4085-4

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

temperature range, otherwise specifications are at TA = 25°C (Note 5). VIN = 5V, VBAT = 3.7V, HPWR = 5V, WALL = 0V, RPROG = 100k,

RCLPROG = 2k, unless otherwise noted.

SYMBOL

PARAMETER

External Ideal Diode

VFWD,EDA

Logic

VOL

VIH

VIL

IPULLDN

VCHG(SD)

External Ideal Diode Forward Voltage

Output Low Voltage CHRG, ACPR

Input High Voltage

Input Low Voltage

Logic Input Pull-Down Current

Charger Shutdown Threshold Voltage

on TIMER

ICHG(SD)

Charger Shutdown Pull-Up Current

on TIMER

VWAR

VWAF

VWDR

VWDF

IWALL

NTC

Absolute Wall Input Threshold Voltage

Absolute Wall Input Threshold Voltage

Delta Wall Input Threshold Voltage

Delta Wall Input Threshold Voltage

Wall Input Current

VVNTC

INTC

VNTC Bias Voltage

NTC Input Leakage Current

VCOLD

Cold Temperature Fault Threshold

Voltage

VHOT

Hot Temperature Fault Threshold

Voltage

VDIS

NTC Disable Voltage

CONDITIONS

VGATE = 1.85V; IGATE = 0

ISINK = 5mA

SUSP, HPWR Pin

SUSP, HPWR Pin

SUSP, HPWR

VTIMER = 0V

VWALL Rising Threshold

VWALL Falling Threshold

VWALL – VBAT Rising Threshold

VWALL – VBAT Falling Threshold

VWALL = 5V

IVNTC = 500μA

VNTC = 1V

Rising Threshold

Hysteresis

Falling Threshold

Hysteresis

NTC Input Voltage to GND (Falling)

Hysteresis

MIN TYP MAX UNITS

20

mV

●

0.1

0.4

V

● 1.2

V

●

0.4

V

2

μA

● 0.14

0.4

V

●

5

14

μA

● 4.15 4.25 4.35

V

3.12

V

75

mV

●

0

25

60

mV

75

150

μA

● 4.4

4.85

V

0

±1

μA

0.738 • VVNTC

V

0.018 • VVNTC

V

0.326 • VVNTC

V

0.015 • VVNTC

V

● 75

100

125

mV

35

mV

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: VCC is the greater of VIN, VOUT or VBAT.

Note 3: All voltage values are with respect to GND.

Note 4: This IC includes overtemperature protection that is intended

to protect the device during momentary overload conditions. Junction

temperatures will exceed 110°C when overtemperature protection is

active. Continuous operation above the specified maximum operating

junction temperature may result in device degradation or failure.

Note 5: The LTC4085-3/LTC4085-4 is tested under pulsed load conditions

such that TJ ≈ TA. The LTC4085E-3/LTC4085E-4 is guaranteed to meet

specified performance from 0° 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 6: Guaranteed by long term current density limitations.

Note 7: Total input current is equal to this specification plus 1.002 • IBAT

where IBAT is the charge current.

Note 8: Accuracy of programmed current may degrade for currents greater

than 1.5A.

408534fb

4

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