LTC4063 datasheet(3/20 Pages) LINER

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LTC4063

4063fc

elecTrical characTerisTics

Note1: 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.

Note2: The LTC4063EDD is guaranteed to meet 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.

Note3: 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.

Note4: Supply current includes PROG pin current and IDET pin current

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

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

RCHGEN

CHGEN Pin Pull-Down Resistor

1.2

MΩ

VCT

Charge Termination Mode Threshold

Voltage

VTIMER from High to Low

Hysteresis

0.4

0.7

100

VUT

User Termination Mode Threshold Voltage

VTIMER from Low to High

Hysteresis

4.15

4.1

100

4.5

IDETECT

Charge Current Detection Threshold

RDET = 1k, 0°C ≤ TA ≤ 85°C

RDET = 2k, 0°C ≤ TA ≤ 85°C

RDET = 10k, 0°C ≤ TA ≤ 85°C

RDET = 20k, 0°C ≤ TA ≤ 85°C

8.5

100

110

11.5

∆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

Temperature Mode

105

°C

RON

Power FET On-Resistance

(Between VCC and BAT)

375

mΩ

VBAT-LDO

LDO Supply Voltage (BAT)

2.65

4.4

IBAT-LDO

LDO Supply Current (from BAT)

VCC < VBAT, IOUT = 0mA

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

Hysteresis

0.4

0.7

100

RLDOEN

LDOEN Pin Pull-Down Resistor

1.2

MΩ

VDO

LDO Dropout Voltage

IOUT = 100mA, VOUT = 3V

125

200

VLDOUVLO

LDO Undervoltage Lockout Threshold

VBAT from High to Low

Hysteresis

2.45

2.55

100

2.65

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,

10Hz ≤ f ≤ 100kHz

135

µVRMS

Theldenotesthespecificationswhichapplyoverthefulloperating

temperaturerange,otherwisespecificationsareatTA=25°C.VCC=5V,unlessotherwisenoted.

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

Note5: Does not include LDO supply current.

Note6: The LDO is partially powered from VCC, thus reducing the supply

current from the BAT pin.

Note7: 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.

Note8: Defined by long term current density limitations.

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