LTC4085EDE-3-TRPBF 데이터 시트보기 (PDF) - Linear Technology

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LTC4085EDE-3-TRPBF

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

CONDITIONS

MIN TYP MAX UNITS

VUVLO

Input or Output Undervoltage Lockout VIN Powers Part, Rising Threshold

● 3.6

3.8

4

V

VOUT Powers Part, Rising Threshold

● 2.75 2.95 3.15

V

ΔVUVLO

Current Limit

Input or Output Undervoltage Lockout VIN Rising – VIN Falling

or VOUT Rising – VOUT Falling

130

mV

ILIM

Current Limit

RCLPROG = 2k (0.1%), HPWR = 5V

RCLPROG = 2k (0.1%), HPWR = 0V

● 475

500

525

mA

● 90

100

110

mA

IIN(MAX)

RON

VCLPROG

ISS

VCLEN

Battery Charger

Maximum Input Current Limit

ON Resistance VIN to VOUT

CLPROG Pin Voltage

Soft Start Inrush Current

Input Current Limit Enable Threshold

Voltage

(Note 8)

IOUT = 100mA Load

RPROG = 2k

RPROG = 1k

IN or OUT

(VIN – VOUT) VIN Rising

(VIN – VOUT) VIN Falling

2.4

A

215

mΩ

● 0.98

1

1.02

V

● 0.98

1

1.02

V

5

mA/μs

20

50

80

mV

–60

mV

VFLOAT

IBAT

IBAT(MAX)

VPROG

kEOC

Regulated Output Voltage

Current Mode Charge Current

Maximum Charge Current

PROG Pin Voltage

Ratio of End-of-Charge Current to

Charge Current

IBAT = 2mA

IBAT = 2mA, (0°C – 85°C)

RPROG = 100k (0.1%), No Load

RPROG = 50k (0.1%), No Load

(Note 8)

RPROG = 100k

RPROG = 50k

VBAT = VFLOAT (3.95V)

3.915 3.95 3.985

V

3.910 3.95 3.990

V

● 465

500

535

mA

● 900 1000 1080

mA

1.5

A

● 0.98

1

1.02

V

● 0.98

1

1.02

V

● 0.085 0.1

0.11 mA/mA

ITRIKL

VTRIKL

VCEN

VRECHRG

tTIMER

Trickle Charge Current

Trickle Charge Threshold Voltage

Charger Enable Threshold Voltage

Recharge Battery Threshold Voltage

TIMER Accuracy

Recharge Time

VBAT = 2V, RPROG = 100k (0.1%)

(VOUT – VBAT) Falling; VBAT = 4V

(VOUT – VBAT) Rising; VBAT = 4V

VFLOAT – VRECHRG

VBAT = 4.05V

Percent of Total Charge Time

35

50

60

mA

● 2.75

2.9

3

V

55

mV

80

mV

● 60

95

130

mV

–10

10

%

50

%

Low Battery Trickle Charge Time

Percent of Total Charge Time, VBAT < 2.8V

25

%

TLIM

Junction Temperature in Constant

Temperature Mode

105

°C

Internal Ideal Diode

RFWD

RDIO(ON)

VFWD

VOFF

IFWD

ID(MAX)

Incremental Resistance, VON Regulation

ON Resistance VBAT to VOUT

Voltage Forward Drop (VBAT – VOUT)

Diode Disable Battery Voltage

Load Current Limit, for VON Regulation

Diode Current Limit

IBAT = 100mA

IBAT = 600mA

IBAT = 5mA

IBAT = 100mA

IBAT = 600mA

125

mΩ

215

mΩ

● 10

30

50

mV

55

mV

160

mV

2.8

V

550

mA

2.2

A

408534fb

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