ISL8012 Ver la hoja de datos (PDF) - Renesas Electronics

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ISL8012

2A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator

Renesas Electronics 

ISL8012

Absolute Maximum Ratings (Reference to GND)

VIN, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V

EN, RSI, PG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VIN+0.3V

LX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.5V (100ns)/-0.3V (DC) to 6.5V

VFB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -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

ESD Rating

Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5kV

Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300V

Thermal Information

Thermal Resistance (Typical)

JA (°C/W) JC (°C/W)

10 Ld 3x3 DFN (Notes 4, 5). . . . . . . . . . .

49

5.5

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. JA 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 JC, the “case temp” location is the center of the exposed metal pad on the package underside.

Electrical Specifications Unless otherwise noted, all parameter limits are established over the recommended operating conditions and

the typical specifications are measured at the following conditions: TA = -40°C to +85°C, VIN = 3.6V, EN = VCC, 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 7) TYP (Note 7) UNITS

INPUT SUPPLY

VIN Undervoltage Lockout Threshold

VUVLO

Rising

Falling

2.5 2.7

V

2.2 2.4

V

Quiescent Supply Current

IVIN MODE = VIN, no load at the output

MODE = VIN, no load at the output and no switches

switching; design info only

40 60

µA

15

µA

MODE = SGND, no load at the output

6

8

mA

Shut Down Supply Current

OUTPUT REGULATION

ISD

VIN = 5.5V, EN = low

0.1 2

µA

VFB Regulation Voltage

VFB Bias Current

Output Voltage Accuracy

Line Regulation

COMPENSATION

VVFB

IVFB

TA = 0°C to +85°C

VFB = 0.75V

0.784 0.8 0.816 V

0.1

µA

VIN = VO + 0.5V to 5.5V, IO = 0A to 2A (Note 6)

-3

3

%

VIN = VO + 0.5V to 5.5V (minimal 2.7V), IOUT = 400mA

0.2

%/V

Error Amplifier Trans-Conductance

Adjustable version, design info only

20

µA/V

LX

P-Channel MOSFET ON-Resistance

N-Channel MOSFET ON-Resistance

P-Channel MOSFET Peak Current Limit

LX Maximum Duty Cycle

VIN = 5.5V, IO = 200mA

VIN = 2.7V, IO = 200mA

VIN = 5.5V, IO = 200mA

VIN = 2.7V, IO = 200mA

IPK

0.12 0.22 

0.21 0.27 

0.11 0.22 

0.13 0.27 

2.65 3.00 3.50 A

100



PWM Switching Frequency

fS

TA = 0°C to +85°C

0.840 1 1.16 MHz

FN6616 Rev 2.00

December 1, 2011

Page 5 of 17

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