Voltage Regulator. NTE1928 Datasheet

NTE1928 Regulator. Datasheet pdf. Equivalent

Part NTE1928
Description Integrated Circuit Positive Adjustable Voltage Regulator
Feature NTE1928 Integrated Circuit Positive Adjustable Voltage Regulator, 4.5V to 40V, 45mA Description The .
Manufacture NTE
Datasheet
Download NTE1928 Datasheet




NTE1928
NTE1928
Integrated Circuit
Positive Adjustable Voltage Regulator,
4.5V to 40V, 45mA
Description
The NTE1928 is an adjustable positive voltage regulator that features fast response to both load
and line transients, freedom from oscillations with varying resistive and reactive loads, and the
ability to start reliabity on any load within rating. This device also contains a biasing circuitry that
removes any minimum load current requirement and at the same time reduces standby current
drain, permitting higher voltage operation.
Features:
D Output Voltage Adjustable from 4.5V to 40V
D Output Currents in Excess of 10A Possible by Adding External Transistors
D Load Regulation Better than 0.1%, Full Load with Current Limiting
D DC Line Regulation Guaranteed at 0.03%/V
D Ripple Rejection on 0.01%V
Absolute Maximum Ratings:
Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Input–Output Differential, VI–O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Power Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230°C/W
Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C
Note 1. The maximum junction temperature of the NTE1928 is +85°C. For operation at elevated
temperatures, this device must be derated based on a thermal resistance of 230°C/W junc-
tion to ambient, or 25°C/W junction–to–case. Peak dissipations to 1W are allowable provid-
ing the dissipation rating is not exceeded with the power average over a two second internal.



NTE1928
Electrical Characteristics: (Note 2)
Parameter
Input Voltage Range
Output Voltage Range
Conditions
Min Typ Max Units
8.5 40 V
4.5 30 V
InputOutput Voltage Differential
Load Regulation
(Note 3)
RSC = 10, TA = +25°C
RSC = 10, TA = +70°C
RSC = 10, TA = 0°C
Line Regulation
Temperature Stability
Feedback Sense Voltage
VIN VOUT 5V, TA = +25°C
VIN VOUT 5V, TA = +25°C
TA = 0°C TA TA = +70°C
3.0 30
0.02 0.05
0.03 0.1
0.03 0.1
0 IO 12mA
0.025 0.06
0.015 0.03
0.3 1.0
1.63 1.7 1.81
V
%
%
%
%/V
%/V
%
V
Output Noise Voltage
Standby Current Drain
Current Limit Sense Voltage
Long Term Stability
Ripple rejection
CREF = 0
CREF = 0.1µF
VIN = 40V
TA = +25°C, RSC = 10,
VOUT = 0V, (Note 4)
CREF = 10µF, f = 120HZ
0.005
0.002
0.8 2.0
225 300 375
%
%
mA
mV
0.1
0.003
%
%/V
Note 2. Unless otherwise specified, these specifications apply for temperatures within the operating
temperature range, for input and output voltages within the range given, and for a divider
impedance seen by the feedback terminal of 2kΩ. Load and line regulation specifications
are for a constant junction temperature. Temperature drift effects must be taken into account
separately when the unit is operating under conditions of high dissipation.
Note 3. The output currents given, as well as the load regulation, can be increased by the addition
of external transistors. The improvement factor will be roughly equal to the composite cur-
rent gain of the added transistors.
Note 4. With no external pass transistor.
Pin Connection Diagram
(Top View)
Regulated Output
8
Current Limit 1
7 Compensation Shutdown
Booster Output 2
6 Feedback
Unregulated Input 3
4
GND
5 Reference Bypass







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)