amc7140 ADD Microtech Inc., amc7140 Datasheet - Page 2

• Manufacturer Part Number: amc7140
• Description: 700ma High Voltage Adjustable Current Regulator With Enable Control
• Manufacturer: ADD Microtech Inc.

The maximum power dissipation for a single-output regulator is:
Copyright © 2008 ADDtek Corp.
Maximum Power Calculation:
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground.
Pin Name
OUT
OE
I
VDD
GND
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.
Input Voltage, V
Output Voltage, V
Enable Voltage, V
Maximum Operating Junction Temperature, T
Storage Temperature Range
Lead Temperature (soldering, 10 seconds)
SET
P
P
D(MAX)
D(MAX)
Currents are positive into, negative out of the specified terminal.
JA
T
T
θ
JA
J
A
numbers are guidelines for the thermal performance of the device/pc-board system.
(
(
Where:
O
(
O
C):
O
Then
C):
=
C /W): Junction-to-Ambient temperature thermal resistance of the package, and other heat dissipating materials.
= [(V
T
J(MAX)
IN(MAX)
Maximum recommended junction temperature
Ambient temperature of the application
V
I
I
V
θ
OUT(NOM)
Q
DD
JA
– T
OUT(NOM)
IN(MAX)
= the quiescent current the regulator consumes at I
= (+150
θ
OUT
OE
- V
JA
A(MAX)
Output pin. Sink current is decided by the current on R
I
Output stage enable control pin. High enable the OUT pin. It can be left floating for normally
on.
Output current set input
Power supply.
Ground
Pin Function
OUT
OUT(NOM)
I
SET
= the maximum input voltage
= the nominal output current, and
= the nominal output voltage
O
= 500 × I
C – T
= 1.2V/R
)] × I
A
J
)/P
= T
OUT(NOM)
D
ABSOLUTE MAXIMUM RATINGS
A
+ (P
SET
SET
.
.
+ V
D
× θ
IN(MAX)
JA
.
).
Connect a resistor from I
J
PIN DESCRIPTION
× I
THERMAL DATA
JA
Q
OUT(MAX)
2
SET
to GND to set the LED bias current.
SET
(Note)
connected to I
DD032_D -- AUGUST 2008
SET
50V
75V
13.2V
150
-65
260
.
AMC7140
°
°
°
C to 150
C
C
80
O
C /W
°
C