LM2618ATL datasheet(4/15 Pages) NSC

部品番号	LM2618ATL

部品情報	400mA Sub-miniature, High Efficiency, Synchronous PWM & PFM Programmable DC-DC Converter

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メーカー	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.

PVIN, VDD, to SGND

−0.2V to +6V

PGND to SGND

−0.2V to +0.2V

EN, SYNC/MODE, VID0, VID1 to

SGND

−0.2V to +6V

FB, SW

(GND −0.2V) to

(VDD +0.2V)

Storage Temperature Range

−45˚C to +150˚C

Lead temperature

(Soldering, 10 sec.)

260˚C

Junction Temperature (Note 2)

−25˚C to 125˚C

Minimum ESD Rating

Human body model, C = 100pF, R =

1.5 k

Ω

±2.0kV

Thermal Resistance (

θ

JA)

LM2618ATL & LM2618BTL (Note 3)

140˚C/W

Electrical Characteristics

Specifications with standard typeface are for T

A =TJ = 25˚C, and those in bold face type apply over the full Operating Tem-

perature Range (T

A =TJ = - 25˚C to +85˚C). Unless otherwise specified, PVIN = VDD = EN = SYNC = 3.6V, VID0 = VID1 =

0V.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

V

IN

Input Voltage Range (Note

4)

PVIN = VDD = VID1 = VID0 =

V

IN

2.8

5.5

V

PVIN = VDD = VD1 = V

IN,

VID0 = 0V

3.0

5.5

V

FB

Feedback Voltage

(Note 5)

VID0 = V

IN, VID1 = VIN

1.764

1.80

1.836

V

VID0 = V

IN, VID1 = 0V

1.793

1.83

1.867

VID0 = 0V, VID1 = 0V

1.833

1.87

1.907

VID0 = 0V, VID1 = V

IN

1.882

1.92

1.958

V

HYST

PFM Comparator Hysteresis

Voltage

(Note 6)

PFM Mode (SYNC = 0V)

25

mV

I

SHDN

Shutdown Supply Current

EN = 0V

0.02

3

µA

I

Q1

DC Bias Current into VDD

PFM mode, V

FB = 2V

180

215

µA

I

Q2

PWM mode, V

FB = 2V

605

735

R

DSON (P)

Pin-Pin Resistance for P

FET

LM2618ATL & LM2618BTL

395

550

m

Ω

R

DSON (N)

Pin-Pin Resistance for N

FET

LM2618ATL & LM2618BTL

330

500

m

Ω

R

DSON , TC

FET Resistance

Temperature Coefficient

0.5

%/C

I

lim

Switch Peak Current Limit

(Note 7)

LM2618ATL

540

720

880

mA

LM2618BTL

430

720

1020

V

EN_H

EN Positive Going

Threshold Voltage

VDD = 3.6V

0.95

1.3

V

EN_L

EN Negative Going

Threshold Voltage

VDD = 3.6V

0.4

0.80

V

SYNC_H

SYNC/MODE Positive

Going Threshold Voltage

0.95

1.3

V

SYNC_L

SYNC/MODE Negative

Going Threshold Voltage

0.4

0.84

V

ID_H

V

ID0,VID1 Positive Going

Threshold Voltage

0.92

1.3

V

ID_L

V

ID0,VID1 Negative Going

Threshold Voltage

0.4

0.83

V

I

VID

VID1, VID0 Pull Down

Current

VID1, VID0 = 3.6V

1.8

3.0

µA

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