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LTC4063

4063fb

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IDETECT

Charge Current Detection Threshold

RDET = 1k, 0°C ≤ TA ≤ 85°C

100

110

RDET = 2k, 0°C ≤ TA ≤ 85°C

455055

RDET = 10k, 0°C ≤ TA ≤ 85°C

8.5

11.5

RDET = 20k, 0°C ≤ TA ≤ 85°C

456

∆VRECHRG Recharge Threshold Voltage

VFLOAT – VRECHRG, 0°C ≤ TA ≤ 85°C

100

125

tTERM

Termination Comparator Filter Time

Current Termination Mode

1.5

2.2

tRECHRG

Recharge Comparator Filter Time

tTIMER

Charge Cycle Time

CTIMER = 0.1µF

2.55

3.45

Hour

tSS

Soft-Start Time

IBAT from 0 to ICHG

100

µs

TLIM

Junction Temperature in Constant

105

°C

Temperature Mode

RON

Power FET “ON” Resistance

375

Ω

(Between VCC and BAT)

VBAT-LDO

LDO Supply Voltage (BAT)

2.65

4.4

IBAT-LDO

LDO Supply Current (from BAT)

VCC < VBAT, IOUT = 0mA

µA

VCC > VBAT, IOUT = 0mA (Note 6)

µA

IBAT-LDO-SD LDO Supply Current in Shutdown

VBAT = 4.4V

2.5

µA

VFB

FB Regulated Voltage

VBAT = 3.7V, IOUT = 1mA

●

784

800

816

VFB(LINE)

VFB Line Regulation

VBAT = 2.65V to 4.4V, IOUT = 1mA

●

VFB(LOAD)

VFB Load Regulation

IOUT = 1mA to 100mA, VBAT = 4.4V

●

VLDOEN

LDOEN Input Threshold Voltage (Rising)

LDOEN Rising, VBAT = 4.4V

0.4

0.7

Hysteresis

100

RLDOEN

LDOEN Pin Pull-Down Resistor

●

1.2

Ω

VDO

LDO Dropout Voltage

IOUT = 100mA, VOUT = 3V

125

200

VLDOUVLO

LDO Undervoltage Lockout Threshold

VBAT from High to Low

2.45

2.55

2.65

Hysteresis

100

IFB

FB Pin Current

–25

ISC

Short-Circuit Output Current

VOUT = 0V

500

VNO(RMS)

Output Voltage Noise

VOUT = 3V, IOUT = 100mA, COUT = 2.2µF,

135

µVRMS

10Hz

≤ f ≤ 100kHz

The

● indicates the specifications which apply over the full operating

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

ELECTRICAL CHARACTERISTICS

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 LTC4063EDD is guaranteed to meet performance specifica-

tions 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 Pad of the package to the

PC board will result in a thermal resistance much higher than 40

°C/W.

Note 4: Supply current includes PROG pin current and IDET pin current

(approximately 100

µA each) but does not include any current delivered to

the battery through the BAT pin (approximately 100mA).

Note 5: Does not include LDO supply current.

Note 6: The LDO is partially powered from VCC, thus reducing the supply

current from the BAT pin.

Note 7: This IC includes overtemperature protection that is intended to

protect the device during momentary overload conditions.

Overtemperature protection will become active at a junction temperature

greater than the maximum operating temperature. Continuous operation

above the specified maximum operating junction temperature may impair

device reliability.

Note 8: Defined by long term current density limitations.

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