LTC4156 データシートの表示（PDF） - Linear Technology

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LTC4156

Dual-Input Power Manager/3.5A LiFePO4 Battery Charger with I2C Control and USB OTG

Linear Technology 

LTC4156

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

junction temperature range, otherwise specifications are at TA ≈ TJ = 25°C (Note 2). VBUS = 5V, BATSNS = 3.3V, DVCC = 3.3V,

RCLPROG1 = RCLPROG2 = 1.21k, RPROG = 499Ω, unless otherwise noted.

SYMBOL

IVOUT

VPROG

VRECHRG

tTERMINATE

VLOWBAT

tBADBAT

VC/x

hPROG

hCLPROG1

(Note 4)

PARAMETER

VOUT Current Available Before

Loading Battery

PROG Pin Servo Voltage

Recharge Battery Threshold

Voltage

Safety Timer Termination Period

Selected by I2C Control. Timer

Starts When BATSNS ≥ VFLOAT

Threshold Voltage

Bad Battery Termination Time

Full Capacity Charge Indication

PROG Voltage Selected by I2C

Control

Ratio of ICHGSNS to PROG Pin

Current

Ratio of Measured VBUS Current to

CLPROG1 Sense Current

CONDITIONS

2.5mA IVBUS Mode (USB Suspend)

100mA IVBUS Mode, BAT = 3.3V

500mA IVBUS Mode, BAT = 3.3V

600mA IVBUS Mode, BAT = 3.3V

700mA IVBUS Mode, BAT = 3.3V

800mA IVBUS Mode, BAT = 3.3V

900mA IVBUS Mode, BAT = 3.3V

1.00A IVBUS Mode, BAT = 3.3V

1.25A IVBUS Mode, BAT = 3.3V

1.50A IVBUS Mode, BAT = 3.3V

1.75A IVBUS Mode, BAT = 3.3V

2.00A IVBUS Mode, BAT = 3.3V

2.25A IVBUS Mode, BAT = 3.3V

2.50A IVBUS Mode, BAT = 3.3V

2.75A IVBUS Mode, BAT = 3.3V

3.00A IVBUS Mode, BAT = 3.3V

12.50% Charge Current Mode

18.75% Charge Current Mode

25.00% Charge Current Mode

31.25% Charge Current Mode

37.50% Charge Current Mode

43.75% Charge Current Mode

50.00% Charge Current Mode

56.25% Charge Current Mode

62.50% Charge Current Mode

68.75% Charge Current Mode

75.00% Charge Current Mode

81.25% Charge Current Mode

87.50% Charge Current Mode

93.75% Charge Current Mode

100.0% Charge Current Mode (Default)

Threshold Voltage Relative to VFLOAT

0.25-Hour Mode

0.5-Hour Mode

1-Hour Mode (Default)

4-Hour Mode

Rising Threshold

Hysteresis

BATSNS < (VLOWBAT – ΔVLOWBAT)

C/10 Mode (ICHARGE = 10%FS) (Default)

C/5 Mode (ICHARGE = 20%FS)

C/20 Mode (ICHARGE = 5%FS)

C/50 Mode (ICHARGE = 2%FS)

CLPROG1 IVBUS Mode

MIN TYP MAX

1

1.3

76

673

810

944

1093

1200

1397

1728

2072

2411

2700

2846

3154

3408

3657

150

225

300

375

450

525

600

675

750

825

900

975

1050

1125

1200

96.6 97.6 98.4

UNITS

mA

mA

mA

mA

mA

mA

mA

mA

mA

mA

mA

mA

mA

mA

mA

mA

mV

mV

mV

mV

mV

mV

mV

mV

mV

mV

mV

mV

mV

mV

mV

%

0.23 0.27 0.30

0.47 0.53 0.59

0.95 1.06 1.17

3.81 4.24 4.66

Hours

Hours

Hours

Hours

2.65

2.8

2.95

V

130

mV

0.47 0.53 0.59

Hours

110

120

130

mV

230

240

250

mV

15

24

33

mV

50

60

70

mV

1000

mA/mA

990

mA/mA

4156f

5

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