AMC7638 datasheet(2/8 Pages) ADDTEK

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AMC7638

DD054_N -- MAY 2007

TYPICAL APPLICATION

AMC7638

VOUT

COUT

4.7

µF

CIN

µF

VIN

ABSOLUTE MAXIMUM RATINGS

(Note)

Input Voltage, VIN

13V

Maximum Operating Junction Temperature, TJ

150

Storage Temperature Range

-65

OC to 150OC

Lead Temperature (soldering, 10 seconds)

260

Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground.

Currents are positive into, negative out of the specified terminal.

RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Min.

Typ.

Max.

Units

Input Voltage

VIN

3.0

Load Current (with adequate heat sinking)

300

500

Input Capacitor (VIN to GND)

0.1

µF

Output Capacitor with ESR of 10

Ω max., (VOUT to GND)

1.0

µF

Operating ambient temperature range

-40

Operating junction temperature

125

POWER DISSIPATION TABLE

Package

(

OC/ W )

Derating factor (mW/

OC )

TA ≥ 25

TA ≤ 25

Power rating (mW)

TA=70

Power rating (mW)

TA= 85

Power rating (mW)

71(Note)

14.1

1763

1128

916

Note: T

J = T

A + (PD × θJA)

D: Power dissipation.

JA: Thermal resistance from Junction to Ambient.

For PK package,

θJT = 35OC / W.

J = T

TAB + (PD × θJT)

TTAB: Tab temperature.

θJT: Thermal resistance from junction to tab of the package.

The

JA numbers are guidelines for the thermal performance of the device/PC-board system.

All of the above assume no ambient airflow.

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