LM3620 datasheet(3/6 Pages) NSC

Numer części	LM3620

Szczegółowy opis	Lithium-Ion Battery Charger Controller

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Producent	NSC [National Semiconductor (TI)]

Strona internetowa	http://www.national.com

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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.

Input Voltage (V

DRIVE)

35V

V

EXT

1.5V

Junction Temperature

150˚C

Storage Temperature

−65 to +150˚C

Lead Temp. Soldering

Vapor Phase (60 sec.)

Infrared (15 sec.)

215˚C

220˚C

Power Dissipation (T

A = 25˚C)

(Note 2)

300mW

ESD Susceptibility (Note 3)

2000V

Operating Ratings (Note 1)

Ambient Temp. Range

0˚C to 70˚C

Junction Temp. Range

0˚C to 125˚C

Thermal Resistance (Junction to

Ambient,

θ

J-A)

280˚C/W

Input Voltage (V

DRIVE)

4Vto30V

Electrical Characteristics

LM3620-4

V

DRIVE = 5V, IDRIVE = 2mA. Limits with boldface type apply over the full operating ambient temperature range, 0˚C to +70˚C,

limits with standard typeface apply for T

A = 25˚C.

Symbol

Parameter

Conditions

Typical

Limit

Units

V

REG

Regulated Output Voltage (pin

1 to ground)

Pin 5 shorted to pin 1 (graphite

anode)

4.1

4.051/4.018

V(min)

4.149/4.182

V(max)

Pin 5 open (coke anode)

4.2

4.150/4.116

V(min)

4.250/4.284

V(max)

Regulated Output Voltage

Tolerance

Either Pin 5 setting

±1.2/±2.0

%

V

REG/VDRIVE

Supply Sensitivity

V

REG for 5V ≤ VDRIVE ≤ 30V

100

µV/V(max)

I

Q

Quiescent Current

V

REG = 4.5V, VEXT = 1.0V (Note 4)

400

750

µA(max)

I

OFF

Off State Current

V

DRIVE open circuited (Note 5)

10

200

nA(max)

I

DRIVE

Drive Pin Sink Current

V

DRIVE = 5.0V

20

15

mA(min)

Gm

(DRIVE)

Drive Pin Transconductance

∆I

DRIVE/∆VREG

2mA

≤ I

DRIVE ≤15mA

3

A/V

I

EXT

External Pin Source Current

V

EXT = 1V (Note 6)

3

2.5

mA(min)

Gm

(EXT)

External Pin Transconductance

∆I

EXT/∆VREG,VEXT = 1V

0mA

≤ I

EXT ≤ 2.5mA

0.8

A/V

R

IN

V

REG Input Resistance

Pin 1 to Ground.

Circuit biased with V

DRIVE applied

V

DRIVE open circuited

46

k

Ω

42

M

Ω

R

F

Feedback Resistance

Pin 1 to Pin 5

1500

Ω

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