ISL8502 データシートの表示（PDF） - Renesas Electronics

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ISL8502

2A Synchronous Buck Regulator with Integrated MOSFETs

Renesas Electronics 

ISL8502

Absolute Maximum Ratings

VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +16.5V

VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6.0V

Absolute Boot Voltage, VBOOT . . . . . . . . . . . . . . . . . . . . . . . +22.0V

Upper Driver Supply Voltage, VBOOT - VPHASE . . . . . . . . . . . +6.0V

All other Pins . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC + 0.3V

Recommended Operating Conditions

Supply Voltage on VIN . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V to 14V

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

Junction Temperature Range. . . . . . . . . . . . . . . . . -40°C to +125°C

Thermal Information

Thermal Resistance

JA (°C/W) JC (°C/W)

QFN Package (Notes 1, 2) . . . . . . . . .

39

2.5

Maximum Junction Temperature (Plastic Package) . . . . . . +150°C

Maximum 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:

1. 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.

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

3. Minimum VIN can operate below 5.5V as long as VCC is greater than 4.5V.

4. Maximum VIN can be higher than 14V voltage stress across the upper and lower do not exceed 15.5V in all conditions.

5. Circuit requires 150ns minimum on time to detect overcurrent condition.

6. Limits established by characterization and are not production tested.

7. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization

and are not production tested.

Electrical Specifications

PARAMETER

Refer to Block and Simplified Power System Diagrams and Typical Application Schematics. Operating

Conditions Unless Otherwise Noted: VIN = 12V, or VCC = 5V ±10%, TA = -40°C to +85°C. Typical are at

TA = +25°C.

SYMBOL

TEST CONDITIONS

MIN

MAX

(Note 7) TYP (Note 7) UNITS

VIN SUPPLY

Input Voltage Range

VIN

5.5

14

V

(Note 3)

(Note 4)

Input Operating Supply Current

Input Standby Supply Current

SERIES REGULATOR

IQ

IQ_SBY

VIN tied to VCC

VFB = 1.0V

EN tied to GND, VIN = 14V

4.5

5.5

V

7

mA

1.25

2

mA

VCC Voltage

Maximum Output Current

VCC Current Limit

POWER-ON RESET

VPVCC

IPVCC

VIN > 5.6V

VIN = 12V

VIN = 12V, VCC shorted to PGND

4.5

5.0

5.5

V

50

mA

300

mA

Rising VCC POR Threshold

4.2

4.4 4.49

V

Falling VCC POR Threshold

3.85 4.0 4.10

V

ENABLE

Rising Enable Threshold Voltage

Falling Enable Threshold Voltage

Enable Sinking Current

OSCILLATOR

VEN_Rising

VEN_Fall

IEN

2.7

V

2.3

V

500

µA

FN6389 Rev 2.00

June 29, 2010

Page 5 of 19

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