파트넘버.co.kr 52174 데이터시트 PDF


52174 반도체 회로 부품 판매점

NEGATIVE ADJUSTABLE 5-AMP VOLTAGE REGULATOR



Micropac Industries 로고
Micropac Industries
52174 데이터시트, 핀배열, 회로
52149/52174
79HG REPLACEMENT
NEGATIVE ADJUSTABLE 5-AMP
VOLTAGE REGULATOR
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
Replacement for 79HG
5.0A Output Current
Internal Current And Thermal Overload Protection
Internal Short Circuit Current Limit
Low Drop-Out Voltage (Typically -2.2 V @ 5.0 A)
50W Power Dissipation
Electrically Isolated Case
Steel TO-3 Case
Applications:
Designed for use in general purpose applications
where adjustability is advantageous.
Military and Hi Rel Industrial applications where
hermeticity is required.
ORDER INFORMATION
52149
52174
Standard
MIL-STD-883 Screened
DESCRIPTION
The 52149/52174, which is a replacement for the 79HG, is an adjustable 4-terminal voltage regulator capable of supplying in
excess of 5 A over a –24 V to -2.55 V output range. This Hybrid Voltage Regulator has been designed with all the inherent
characteristics of the monolithic 4-terminal regulator; i.e., full thermal overload and short circuit protection. It is packaged in a
hermetically sealed 4-pin, TO-3 package providing 50W power dissipation. The regulator consists of a monolithic chip
driving a discrete series-pass element and short circuit detection transistors.
ABSOLUTE MAXIMUM RATINGS
Input Voltage.........................................................................................................................................................................-35 V
Internal Power Dissipation @Tc = 25°C ...............................................................................................................................50W
Maximum Input-to-Output Voltage Differential...................................................................................................................... 35 V
Operating Junction Temperature ....................................................................................................................................... 150°C
Storage Temperature Range..............................................................................................................................-55°C to +150°C
Pin Temperature (Soldering, 60 seconds) ......................................................................................................................... 300°C
Commercial Temperature Range 52149 ..............................................................................................................0°C to +125°C
Military Temperature Range 52174....................................................................................................................-55°C to +125°C
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com E-MAIL: [email protected] 12/12/01
1


52174 데이터시트, 핀배열, 회로
52149/52174
NEGATIVE ADJUSTABLE 5-AMP, VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS
TJ = 25ºC, VIN = -10V and IOUT = -2.0A unless otherwise specified
PARAMETER
TEST CONDITIONS
Output Voltage Range
Nominal Output Voltage Range
Output Voltage Tolerance
Line Regulation
Load Regulation
Control Pin Current
Quiescent Current
Ripple Rejection
Output Noise Voltage
Dropout Voltage
Short-Circuit Current Limit
Control Pin voltage (Reference)
VIN = VOUT -5V
40V VIN -7V
40V VIN -7V
VIN = VOUT -10V
-10mA IOUT -5.0A
VIN = -10V
-18V VIN -8.5V
VOUT = -5V, f = 120 Hz
VOUT = -5V, 10 Hz f 100kHz
IOUT = -5A @ -0.95 VOUT
VIN = -15V
VIN = -10V
MIN TYP
-7.0
2.55
0.4
0.7
-2.65
50
200
-2.2
8
MAX
-35
24
4
1.0
1.0
3.0
7.0
12
-2.45
UNIT
V
V
% (VOUT)
% (VOUT)
% (VOUT)
µA
mA
dB
µV
V
A
V
DESIGN CONSIDERATIONS
This device has thermal overload protection from excessive power and internal short circuit protection, which limits the circuit’s maximum
current. Thus, the device is protected from overload abnormalities. Although the internal power dissipation is limited, the junction
temperature must be kept below the maximum specified temperature (150ºC). It is recommended, by the manufacturer, that the maximum
junction temperature be kept as low as possible for increased reliability. To calculate the maximum junction temperature or heat sink
required, the following thermal resistance values should be used.
Package
TO-3
Typical
1.8
θJC
Max
2.5
Where:
PD = Power Dissipation
TJ = Junction Temperature
TA = Ambient Temperature
θCS = Case-to-heat sink thermal resistance
θJC = Junction-to-case thermal resistance
PD(MAX) = TJ(MAX) – TA
θCA = θCS + θSA
θJC + θCA
Solving for TJ = TA + PD (θJC + θCA)
θCA = Case-to-ambient thermal resistance
θSA = Heat sink-to-ambient thermal resistance
The device is designed to operate without external compensation components. However, the amount of external filtering of these voltage
regulators depends upon the circuit layout. If in a specific application the regulator is more than four inches from the filter capacitor, a 2µF
solid tantalum capacitor should be used at the input. A 1µF capacitor should be used at the output to reduce transients created by fast
switching loads, as seen in the basic test circuit. These filter capacitors must be located as close to the regulator as possible.
Caution: Permanent damage can result from forcing the output voltage higher than the input voltage. A protection diode from output to
input should be used if this condition exists.
VOLTAGE OUTPUT
The device has an adjustable output voltage from -2.55 to -24V which can be programmed by the external resistor network (potentiometer
or two fixed resistors) using the relationship:
Example: If R1 = 0and R2 = 5k, Then
VOUT = VCONTROL R1 + R2
VOUT = -2.55 V nominal,
R2 or, if R1 = 12.8 kand R2 = 2.1 kthen
VOUT = -18V.
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION 905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com E-MAIL: [email protected] 12/12/01
2




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52174 regulator

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