ISL8002(2013_01) 查看數據表（PDF） - Intersil

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ISL8002
(Rev.:2013_01)

Compact Synchronous Buck Regulators

Intersil 

ISL8002, ISL8002A, ISL80019, ISL80019A

Absolute Maximum Ratings

VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V (DC) or 7V (20ms)

PHASE . . . . . . . . . . . . . . -1.5V (100ns)/-0.3V (DC) to 6V (DC) or 7V (20ms)

EN, COMP, PG, MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VIN+0.3V

FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.7V

Recommended Operating Conditions

VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V

Load Current Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0A to 2A

Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C

Thermal Information

Thermal Resistance (Typical, Notes 4, 5) θJA (°C/W) θJC (°C/W)

2x2 TDFN Package . . . . . . . . . . . . . . . . . . .

71

7

Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-55°C to +125°C

Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C

Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product

reliability and result in failures not covered by warranty.

NOTES:

4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech

Brief TB379 for details.

5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.

Electrical Specifications TA = -40°C to +85°C, VIN = 2.7V to 5.5V, unless otherwise noted. Typical values are at TA = +25°C. Boldface

limits apply over the operating temperature range, -40°C to +85°C.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 6)

MAX

TYP

(Note 6) UNITS

INPUT SUPPLY

VIN Undervoltage Lockout Threshold

VUVLO

Rising, no load

Falling, no load

2.5

2.7

V

2.2

2.4

V

Quiescent Supply Current

IVIN MODE = PFM (GND), FSW = 2MHz, no load at

the output

35

60

µA

MODE = PWM (VIN), FSW = 1MHz, no load at

the output

7

15

mA

MODE = PWM (VIN), FSW = 2MHz, no load at

the output

10

22

mA

Shut Down Supply Current

OUTPUT REGULATION

ISD MODE = PFM (GND), VIN = 5.5V, EN = low

5

10

µA

Reference Voltage

VFB Bias Current

Line Regulation

Soft-Start Ramp Time Cycle

VREF

IVFB

VFB = 0.75V

VIN = VO + 0.5V to 5.5V (minimal 2.7V)

0.595

0.600

0.1

0.2

1

0.605

V

µA

%/V

ms

PROTECTIONS

Positive Peak Current Limit

IPLIMIT 2A application

3

3.5

4

A

1.5A application

2.1

2.5

2.9

A

Peak Skip Limit

ISKIP

VIN = 3.6, VOUT = 1.8V (See “Applications

Information” on page 18 for more detail)

450

mA

Zero Cross Threshold

-170

-70

30

mA

Negative Current Limit

INLIMIT

-2.3

-1.5

-1

A

Thermal Shutdown

Temperature rising

150

°C

Thermal Shutdown Hysteresis

Temperature falling

25

°C

7

FN7888.1

January 7, 2013

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