a703eft ADD Microtech Inc., a703eft Datasheet - Page 3

• Manufacturer Part Number: a703eft
• Description: 2 Channels 150ma High Voltage Adjustable Current Regulator
• Manufacturer: ADD Microtech Inc.

Copyright © 2009 ADDtek Corp.
Maximum Power Calculation:
Thermal Resistance from Junction to Thermal Pad, θ
Thermal Resistance from Junction to Ambient, θ
Junction Temperature Calculation: T
The θ
Connect the ground pin to ground using a large pad or ground plane for better heat dissipation.
All of the above assume no ambient airflow.
P
D(MAX)
JA
T
T
θ
JA
J
A
numbers are guidelines for the thermal performance of the device/pc-board system.
(
(
°
(
°
°
C):
=
C):
O
C /W):
T
J(MAX)
Maximum recommended junction temperature
Ambient temperature of the application
Junction-to-Ambient thermal resistance of the package, and other heat dissipating materials.
θ
– T
JA
AGND
A(MAX)
ISET
V
EN
DD
5
6
8
7
J
= T
A
+ (P
I
OUT
D
× θ
Regulator
Protection
Thermal
JA
).
BLOCK DIAGRAM
THERMAL DATA
JA
JC
OUT1
3
1
2 Switches
OUT2
4
2
3
PGND
PGND
DD080_ C -- JULY 2009
15 °C/W
86 °C/W
A703