ISL8036 데이터 시트보기 (PDF) - Intersil

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ISL8036

Dual 3A 1MHz/2.5MHz High Efficiency Synchronous Buck Regulator

Intersil 

ISL8036, ISL8036A

Absolute Maximum Ratings (Reference to SGND)

VIN1,VIN2, VDD. . . . . . . . -0.3V to 6.5V (DC) or 7V (20ms)

LX1, LX2. . . -1.5V (100ns)/-0.3V (DC) to 6.5V (DC) or 7V (20ms)

EN1, EN2, PG1, PG2, SYNC, SS . . . . . . . . . . -0.3V to +6.5V

FB1, FB2, COMP . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.7V

NC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 0.3V

ESD Ratings

Human Body Model (Tested per JESD22-A114) . . . . . . 4kV

Charged Device Model (Tested per JESD22-C101E) . . . 2kV

Machine Model (Tested per JESD22-A115) . . . . . . . . 300V

Latch Up (Tested per JESD-78A; Class 2, Level A) . . . 100mA

Thermal Information

Thermal Resistance (Typical)

θJA (°C/W) θJC (°C/W)

24 Ld 4x4 QFN (Notes 4, 5) . . . . 36

2

Junction Temperature Range . . . . . . . . . . -55°C to +150°C

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

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

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

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

Recommended Operating Conditions

VIN Supply Voltage Range . . . . . . . . . . . . . . . . 2.85V to 6V

Load Current Range per Channel. . . . . . . . . . . . . . 0A to 3A

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

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.

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

Electrical Specifications Unless otherwise noted, the typical specifications are measured at the following conditions:

TA = -40°C to +85°C, VIN = 3.6V, EN1 = EN2 = VDD, L = 1.5µH, C1 = C2 = C4 = 2x22µF,

IOUT1 = IOUT2 = 0A to 3A, 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

MAX

(Note 6) TYP (Note 6) UNITS

INPUT SUPPLY

VIN Undervoltage Lockout

Threshold

VUVLO Rising

Hysteresis

2.5 2.85

V

50 100

mV

Quiescent Supply Current

Shutdown Supply Current

OUTPUT REGULATION

IVDD

ISD

SYNC = VDD, EN1 = EN2 = VDD,

FS = 1MHz, no load at the output

FS = 2.5MHz, no load at the output

VDD = 6V, EN1 = EN2 = SGND

15

40

mA

30

70

mA

8

20

µA

FB1, FB2 Regulation Voltage

FB1, FB2 Bias Current

Load Regulation

VFB

0.790 0.8 0.810

IFB VFB = 0.75V

0.1

SYNC = VDD, output load from 0A to 6A

2

V

µA

mV/A

Line Regulation

Soft-start Ramp Time Cycle

VIN = VO + 0.5V to 6V (minimal 2.85V)

0.1

SS = VDD

1.5

%/V

ms

Soft-start Charging Current

ISS

COMPENSATION

4

5

6

µA

Error Amplifier Trans-Conductance

SS = VDD

20

µA/V

SS with Capacitor

100

µA/V

Trans-resistance

RT

0.180 0.2 0.220

Ω

Trans-resistance Matching

RT_match

-0.03

+0.03

Ω

OVERCURRENT PROTECTION

Dynamic Current limit ON-time

Dynamic Current Limit OFF-time

Positive Peak Overcurrent Limit

tOCON

tOCOFF

Ipoc1

Ipoc2

17

Clock pulses

8

SS cycle

4.1 4.8 5.5

A

4.1 4.8 5.5

A

8

FN6853.1

October 18, 2010

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