NTE1929
3 Terminal Adjustable Positive Voltage Regulator
1.2V to 33V, 3A
Description:
The NTE1929 is an adjustable 3鈥搕erminal positive voltage regulator in a TO220 type package capable
of supplying in excess of 3A over an output voltage range of 1.2V to 33V. This device employes inter-
nal current limiting, thermal shutdown, and safe area compensation making the it essentially blow鈥搊ut
proof.
The NTE1929 serves a wide variety of applications including local, on card regulation. This device
also makes an especially simple adjustable switching regulator, a programmable output regulator,
and can also be used as a precision current regulator.
Features:
D
Guaranteed 3A Output Current
D
Output Adjustable Between 1.2V and 33V
D
Load Regulation Typically 0.1%
D
Line Regulation Typically 0.005%/V
D
Internal Thermal Overload Protection
D
Internal Short鈥揅ircuit Current Limiting Constant with Temperature
D
Floating Operation for High Voltage Applications
D
Standard 3鈥揕ead TO220 Type Transistor Package
D
Eliminates Stocking many Fixed Voltages
Absolute Maximum Ratings:
Input鈥揙utput Voltage Differential, V
I
鈥揤
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35V
Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally Limited
Operating Junction Temperature Range, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0擄 to +125擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Lead Temperature (During Soldering, 10sec), T
L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300擄C
Thermal Resistance, Junction鈥搕o鈥揅ase, R
thJC
Peak (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3擄C/W Max
Average (Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5擄C/W Typ
Note 1. Thermal Resistance evaluated measuring the hottest temperature on the die using an in-
frared scanner. This method of evaluation yields very accurate thermal resistance values
which are conservativeompared to other measurement techniques.
Note 2. The average die temperature is used to derive the value of thermal resistance junction to
case (average).
1
2
