LM3621 datasheet(3/14 Pages) NSC

No. de pieza	LM3621

Descripción Electrónicos	Single Cell Lithium-Ion Battery Charger Controller

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Fabricante Electrónico	NSC [National Semiconductor (TI)]

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage, V

DD

6.0V

All pins

−0.3 V

≤ V ≤ V

DD+0.3V

Power Dissipation

100 mV

ESD Susceptibility (Note 2)

2kV

Junction Temperature

150˚C

Storage Temperature

−65˚C to +150˚C

Lead Temperature,

soldering

Vapor Phase (60 sec)

+215˚C

Infrared (15 sec)

+220˚C

Operating Ratings

Ambient Temperature Range

0˚C

≤ T

A ≤ 70˚C

Supply Voltage Range (Note 3)

3.0V

≤ V

DD ≤ 5.5V

Electrical Characteristics

V

DD = 4.2V unless otherwise specified. Specifications with standard type face are for TA = 25˚C, and those with boldface type

apply over full operating temperature range.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

V

OUT

Battery Regulation Voltage (Note

4)

Charge termination voltage for

V

SET = HI

4.18

4.2

4.22

V

4.16

4.24

V

Charge termination voltage for

V

SET =LO

4.08

4.1

4.12

V

4.06

4.14

V

Battery conditioning (Hi-Z) charge

mode, LM3621M-3.0

2.95

3.1

3.25

V

Battery conditioning (Hi-Z) charge

mode, LM3621M

4.05

4.1

4.15

V

Monitor Mode float voltage for

V

SET = HI

4.05

4.09

4.13

V

Monitor Mode float voltage for

V

SET = LO

3.80

3.85

3.90

V

CSR

Charge Current Regulation

Voltage (Notes 5, 16)

Fast Charge Mode

0.475

0.5

0.525

V

Conditioning (Hi-Z) Charge Mode

0.04

0.05

0.06

V

Boost Mode

0.855

0.9

0.945

V

BAT-Det

Battery Voltage Detection

Threshold (Note 6)

Overvoltage Fault Threshold for

V

SET = HI

4.28

4.40

4.50

V

Overvoltage Fault Threshold for

V

SET = LO

4.18

4.30

4.40

V

Battery Resistance Free Voltage

Threshold

3.55

3.65

3.75

V

Conditioning (Hi-Z) Charge Mode

Threshold

2.45

2.55

2.65

V

2.40

2.70

V

CSR-Det

Charge Current Voltage Detection

Threshold (Notes 7, 16)

End of charge threshold

40

mV

Over Current Fault Threshold

0.95

1

1.05

V

IQ

Quiescent Current

Standby Mode with I

OUT = 0mA

3

5

mA

I

OUT

MCO Output Source Current

V

MCO = 1.0V

20

mA

V

MCO

Maximum MCO Output Voltage

I

OUT = 1 mA, VDD = 5.5V

4.9

V

I

OUT = 1 mA, VDD = 3.0V

2.9

V

GM-V

V-Reg Loop Error Amp

Transconductance

0.1

mA/V

I

SLEW-V

V-Reg Loop Error Amp Slew

Current

100

µA

GM-I

I-Reg Loop Error Amp

Transconductance

1

mA/V

I

SLEW-I

I-Reg Loop Error Amp Slew

Current

200

µA

T

HR

1 Hour Timer

55

60

65

min

3

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