LTC4099EUDC View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC4099EUDC

I2C Controlled USB Power Manager/Charger with Overvoltage Protection

Linear Technology 

LTC4099

Electrical Characteristics The l denotes the specifications which apply over the full operating temp-

erature range, otherwise specifications are at TA = 25°C. VBUS = 5V, BAT = 3.8V, DVCC = 3.3V, RPROG = 1.02k, RCLPROG = 3.01k, unless

otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

VPROG,TRKL

hPROG

VTRKL

ΔVTRKL

VRECHRG

tTERM_RANGE

tBADBAT

VC/x

PROG Pin Servo Voltage in Trickle Charge

Ratio of IBAT to PROG Pin Current

Trickle Charge Threshold Voltage

BAT < VTRKL

BAT Rising

Trickle Charge Hysteresis Voltage

Recharge Battery Threshold Voltage

Safety Timer Termination Period Range

Bad Battery Termination Time

Full Capacity Charge Indication PROG

Voltage (Note 5)

Threshold Voltage Relative to VFLOAT

Selectable by I2C, Timer Starts When

BAT = VFLOAT

BAT < VTRKL

COVERX1/0 = 00

COVERX1/0 = 01

0.100

V

1030

mA/mA

2.7

2.85

3

V

130

mV

–75

–100

–125

mV

1-8

Hour

0.4

0.5

0.6

Hour

90

100

110

mV

40

50

60

mV

COVERX1/0 = 10

190

200

210

mV

COVERX1/0 = 11

490

500

510

mV

RON_CHG

TLIM

Battery Charger Power FET

On-Resistance (Between VOUT and BAT)

Junction Temperature in Constant

Temperature Mode

Bat-Track External Switching Regulator Control

IBAT = 200mA

Selectable by I2C

0.18

Ω

85, 105

°C

VWALL

Absolute WALL Input Threshold

ΔVWALL

Differential WALL Input Threshold

VOUT

Regulation Target Under VC Control

IWALLQ

WALL Quiescent Current

RACPR

ACPR Pull-Down Strength

VHACPR

ACPR High Voltage

VLACPR

ACPR Low Voltage

Overvoltage Protection

Rising Threshold

Falling Threshold

WALL–BAT Rising Threshold

WALL–BAT Falling Threshold

IACPR = 0mA

IACPR = 0mA

4.15

4.3

4.45

V

3.2

V

90

mV

0

37

50

mV

3.5

BAT + 0.3

V

130

µA

150

Ω

VOUT

V

0

V

VOVCUTOFF

VOVGATE

Overvoltage Protection Threshold

OVGATE Output Voltage

VOVGATELOAD OVGATE Voltage with 1µA Load

IOVSENSQ

OVSENS Quiescent Current

tRISE

OVGATE Time to Reach Regulation

Overtemperature Battery Conditioner

IDISCHARGE

Overtemperature Battery Discharge

Current

VALLOW

Maximum Allowed Overtemperature

Battery Voltage

Rising Threshold, ROVSENS = 6.2k

Input Below VOVCUTOFF

Input Above VOVCUTOFF

5V Through 6.2k into OVSENS

VOVSENS = 5V

COVGATE = 1nF

Only When Enabled via I2C Control,

BAT = 4.2V

Only When Enabled via I2C Control

6.10

6.35

6.70

V

1.88 • VOVSENS 12

V

0

V

8

8.6

V

40

µA

2.5

ms

180

mA

3.85

V

4099fd



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