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PDF RC4194 Data sheet ( Hoja de datos )

Número de pieza RC4194
Descripción Dual Tracking Voltage Regulators
Fabricantes Fairchild Semiconductor 
Logotipo Fairchild Semiconductor Logotipo



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No Preview Available ! RC4194 Hoja de datos, Descripción, Manual

RC4194
Dual Tracking Voltage Regulators
www.fairchildsemi.com
Features
• Simultaneously adjustable outputs with one resistor
to ±42V
• Load current – ±200 mA with 0.04% load regulation
• Internal thermal shutdown at TJ = +175°C
• External balance for ±VOUT unbalancing
• 3W power dissipations
Description
The RC/RM4194 are dual polarity tracking regulators
designed to provide balanced or unbalanced positive and
negative output voltages at currents to 200 mA.
A single external resistor adjustment can be used to change
both outputs between the limits of ±50 mV and ±42V.
These devices are designed for local “on-card” regulation,
eliminating distribution problems associated with single-
point regulation. To simplify application the regulators
require a minimum number of external parts.
The device is available in three package types to accommo-
date various power requirements. The K (TO-66) power
package can dissipate up to 3W at TA = +25°C. The D
14-pin dual in-line will dissipate up to 1W and the N
14-pin dual in-line will dissipate up to 625 mW.
Block Diagram
+VOUT
4194
Comp+
20K
Bal
100µA
Current
Source
+VS
GND
RSET
Comp–
–VS
20K Thermal
Shutdown
3R R
RO
–VOUT
65-4194-01
Rev. 1.0.0

1 page




RC4194 pdf
RC4194
PRODUCT SPECIFICATION
Typical Applications
0.01µF
+VS
Comp+
+VS
+VOUT
RA
+VOUT
To Additional
Comparators
4.7µF**
RM4194
Bal
4805
(Typically 15 RC4805s)
-VS
-VS
R SET Comp- Gnd R 0 -VOUT
RB
71.5K
R0
-VOUT= -5V
To Additional
Comparators
4.7µF
0.01µF
65-0205
RO (k½ ) = 2.5 (-VOUT )
Adjust R O for -VOUT = -5V (12.5 kW)
RF1 = R F2 = 20 k½ (See Schematic)
+ VOUT = -VOUT
R F1
R F2
RA = when +VOUT
RA
RB
-VOUT
R B = when +VOUT -V OUT
For +VOUT = 5 when -VOUT = -5V
RA =
RB =
Figure 4. Unbalanced Output Voltage — Comparator Application
2N4905 or equiv.
R SC*
0.1 mF
+VS 47W
GND
+VS
4194
2N2297 or equiv.
Comp+
+VOUT
+VOUT
60µF**
-VS 47 W
2N2297 or equiv.
0.1 mF
-VS
RSET Comp-
R0 -VOUT
71.5K
R0
R SC*
2N914 or equiv.
*RSC =
0.7
I SC
**Optional usage - Not as critical as -VO bypass capacitors.
-V OUT
60µF
Load regulation
10 mV @ 2.5A
RO (kW) = 2.5 V O
Note: Compensation and bypass capacitor connections should be close as posibe to the 4194
65-0206
Figure 5. High Output Application
5

5 Page





RC4194 arduino
RC4194
Simplified Schematic Diagram
PRODUCT SPECIFICATION
11

11 Page







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