LTC4056-4.2 datasheet(2/16 Pages) LINER

Part #	LTC4056-4.2

Description	Linear Li-Ion Charger with Termination in ThinSOT

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Manufacturer	LINER [Linear Technology]

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LTC4056-4.2

2

405642f

ORDER PART

NUMBER

TS8 PART

MARKING

TJMAX = 125°C, θJA = 120°C/W TO 200°C/W

DEPENDING ON PC BOARD LAYOUT

Consult LTC Marketing for parts specified with wider operating temperature ranges.

LTG5

LTC4056ETS8-4.2

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

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

temperature range, otherwise specifications are at TA = 25°C. VCC = 5V.

Input Supply Voltage (VCC) ........................– 0.3V to 10V

BAT, CHRG ................................................– 0.3V to 10V

DRIVE, PROG, TIMER/SHDN ....... – 0.3V to (VCC + 0.3V)

Output Current (ISENSE) ...................................... 900mA

Short-Circuit Duration (BAT, ISENSE) ............Continuous

Junction Temperature ........................................... 125

°C

Operating Ambient Temperature Range

(Note 2) .............................................. – 40

°C to 85°C

Storage Temperature Range ................. – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300

°C

1

2

3

4

VCC

ISENSE

DRIVE

GND

8

7

6

5

CHRG

BAT

PROG

TOP VIEW

TS8 PACKAGE

8-LEAD PLASTIC SOT-23

TIMER/

SHDN

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VCC Supply

VCC

Input Supply Voltage (Note 3)

q

4.5

6.5

V

ICC

Quiescent VCC Supply Current

VBAT = 4.5V (Forces IDRIVE = 0)

IPROG = 200µA (RPROG = 5k)

q

400

600

µA

ISHDN

VCC Supply Current in Manual Shutdown

VTIMER/SHDN = 0V

40

60

µA

IBMS

Battery Drain Current in

VTIMER/SHDN = 0V

q

–1

0

1

µA

Manual Shutdown (Note 4)

IBSL

Battery Drain Current in

VCC = 0V

q

–1

0

1

µA

Sleep Mode (Note 5)

VUVLOI

Undervoltage Rising Threshold

VCC Increasing

q

4.325

4.40

4.475

V

VUVLOD

Undervoltage Falling Threshold

VCC Decreasing

q

4.275

4.35

4.425

V

VUVHYS

Undervoltage Hysteresis

VUVLOI-VUVLOD

50

mV

VUVCL

Undervoltage Charge Current Limit Threshold

4.575

V

VUVCL-VUVLOI UV Charge Current to UVLO Threshold Margin

q

90

170

250

mV

Charging Performance

VFLOAT

Output Float Voltage in

IBAT = 10mA

4.175

4.200

4.225

V

Constant Voltage Mode

IBAT = 10mA, 4.75V ≤ VCC ≤ 6.5V

q

4.158

4.200

4.242

V

IBAT

Output Full-Scale Current in

RPROG = 5k, 4.75V ≤ VCC ≤ 6.5V,

137

183

228

mA

Constant Current Mode

PNP Beta > 50, 0

°C ≤ TA ≤ 85°C

RPROG = 1.43k, 4.75V ≤ VCC ≤ 6.5V,

590

640

690

mA

PNP Beta > 50, 0

°C ≤ TA ≤ 85°C

IDSINK

Drive Output Current

VDRIVE = 3V

q

30

mA

ITRIKL

Trickle Charge Current

VBAT = 2V, RPROG = 5k

5

7

10

mA

VBAT = 2V, RPROG = 1.43k

12

20

28

mA

VTRIKL

Trickle Charge Threshold Voltage

VBAT Falling

q

2.73

2.80

2.87

V

∆VTRIKL

Trickle Charge Hysteresis Voltage

45

70

95

mV

VPROG1

PROG Pin Voltage

RPROG = 5k (IPROG = 200µA)

q

0.98

1

1.02

V

VPROG2

PROG Pin Voltage

RPROG = 1.43k (IPROG = 700µA)

q

0.98

1

1.02

V

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