LTC4098EPDC-1(RevB) Просмотр технического описания (PDF) - Linear Technology

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производитель

LTC4098EPDC-1
(Rev.:RevB)

USB Compatible Switching Power Managers/Li-Ion Chargers with Overvoltage Protection

Linear Technology 

LTC4098/LTC4098-1

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, BAT = 3.8V, RCLPROG = 3.01k, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IVOUT

VOUT Current Available Before

Discharging Battery

1x Mode, BAT = 3.3V

5x Mode, BAT = 3.3V

10x Mode, BAT = 3.3V

Low Power Suspend Mode

High Power Suspend Mode

135

mA

659

mA

1231

mA

0.26

0.32

0.41

mA

1.6

2.04

2.46

mA

VCLPROG

CLPROG Servo Voltage in Current Limit 1x, 5x, 10x Modes

Suspend Modes

1.188

V

100

mV

VUVLO

VBUS Undervoltage Lockout

Rising Threshold

Falling Threshold

4.30

4.35

V

3.95

4.00

V

VDUVLO

VBUS to BAT Differential Undervoltage Rising Threshold

Lockout

Falling Threshold

200

mV

50

mV

VOUT

fOSC

RPMOS

RNMOS

IPEAK

VOUT Voltage

Switching Frequency

PMOS On-Resistance

NMOS On-Resistance

Peak Inductor Current Clamp

1x, 5x, 10x Modes, 0V < BAT ≤ 4.2V,

IVOUT = 0mA, Battery Charger Off

USB Suspend Modes, IVOUT = 250μA

1x Mode

5x Mode

10x Mode

3.5 BAT + 0.3 4.7

V

4.5

4.6

4.7

V

1.96

2.25

2.65

MHz

0.18

Ω

0.30

Ω

1.2

A

1.7

A

3

A

RSUSP

Suspend LDO Output Resistance

Bat-Track External Switching Regulator Control

15

Ω

VWALL

Absolute WALL Input Threshold

Rising Threshold

Falling Threshold

4.2

4.3

4.4

V

3.2

V

ΔVWALL

Differential WALL Input Threshold

WALL-BAT Rising Threshold

WALL-BAT Falling Threshold

90

mV

0

30

45

mV

Regulation Target

3.5 BAT + 0.3

V

WALL Quiescent Current

ACPR High Voltage

ACPR Low Voltage

Overvoltage Protection

IACPR = 0mA

IACPR = 0mA

100

μA

VOUT

V

0

V

VOVP

VOVGATE

Overvoltage Protection Threshold

OVGATE Output Voltage

tRISE

OVGATE Time to Reach Regulation

Battery Charger

Rising Threshold, ROVSENS = 6.04k

Input Below VOVP

Input Above VOVP

COVGATE = 1nF

6.20

6.35

6.50

V

1.88 • VOVSENSE 12

V

0

V

2.2

ms

VFLOAT

ICHG

IBAT

LTC4098 BAT Regulated Output Voltage

LTC4098-1 BAT Regulated Output

Voltage

Constant-Current Mode Charge Current

Battery Drain Current

0°C ≤ TA ≤ 85°C

0°C ≤ TA ≤ 85°C

RPROG = 1k, 10x Mode

RPROG = 5k, 5x, 10x Modes

VBUS > VUVLO, PowerPath Switching

Regulator On, Battery Charger Off,

IVOUT = 0μA

VBUS = 0V, IVOUT = 0μA (Ideal Diode

Mode)

4.179

4.200

4.221

V

4.165

4.200

4.235

V

4.080

4.100

4.121

V

4.066

4.100

4.134

V

980

1030

1080

mA

192

206

220

mA

3.7

5

μA

25

35

μA

40981fb

3

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