9

9 - 10

For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com

Application Support: apps@hittite.com

HMC976LP3E

400mA LOW NOISE, HIGH PSRR

LINEAR VOLTAGE REGULATOR

v01.0711

Thermal dissipation should be taken into account at all times especially with large VDD-VR values i.e. if 1.8V is

required from 5.5V VIN then the output current must be restricted to <210mA , or VDD restricted to <3.75V for a

400mA load.

The following plots show the board ground copper area influence, on junction temperature for ambient temperatures

of 25°C, 50°C, 85°C vs. Total power dissipated in the device. The conditions for the plots are :

HMC976LP3E JUNCTION TEMPERATURE

°C vs. TOTAL POWER DISSIPATION 25°C

AMBIENT

25

50

75

100

125

150

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

POWER DISSIPATION (W)

Tjmax

1000mm

2580mm

2580mm

100 mm

JEDEC no HS

25

50

75

100

125

150

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

POWER DISSIPATION (W)

Tjmax

JEDEC no HS

2580mm

2580mm

1000mm

100mm

25

50

75

100

125

150

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

POWER DISSIPATION (W)

100mm

2580mm

2580mm

1000mm

Tjmax

JEDEC no HS

HMC976LP3E JUNCTION TEMPERATURE

°C vs. TOTAL POWER DISSIPATION 50°C

AMBIENT

HMC976LP3E JUNCTION TEMPERATURE

°C vs. TOTAL POWER DISSIPATION 85°C

AMBIENT