KA350 Fairchild Semiconductor, KA350 Datasheet - Page 5

• Manufacturer Part Number: KA350
• Description: IC REG 3A POS ADJ TO-220
• Manufacturer: Fairchild Semiconductor

Specifications of KA350

• Regulator Topology: Positive Adjustable
• Voltage - Output: 1.2 ~ 33 V
• Voltage - Input: Up to 35V
• Number Of Regulators: 1
• Current - Output: 3A (Max)
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Adjustable
• Output Voltage: 1.2 V to 33 V
• Output Current: 3 A
• Line Regulation: 0.03 % / V
• Load Regulation: 0.5 %
• Input Voltage Max: 35 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Reference Voltage: 1.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Typical Application
C
C
improved output impedance and rejection of transients.
In operation, the KA350 develops a nominal 1.25V reference voltage, V
reference voltage is impressed across program resistor R
through the output set resistor R
V
Since I
mize I
output establishing a minimum load current requirement. If there is insufficient load on the output, the output voltage will rise.
Since the KA350 is a floating regulator, it is only the voltage differential across the circuit which is important to performance,
and operation at high voltage with respect to ground is possible.
Since I
I
O
O
: C
= 1.25V(1+R
: Output capacitors in the range of 1 F to 100 F of aluminum or tantalum capacitor are commonly used to provide
ADJ
I
ADJ
ADJ
is required if the regulator is located an appreciable distance from power supply filter.
and make it very constant with line and load changes. To do this, all quiescent operating current is returned to the
current (less than 100 F) from the adjustment terminal represents an error term, the KA350 was designed to mini-
is controlled to less than 100 A, the error associated with this term is negligible in most applications.
2
/R
1
) + I
ADJ
Input
R
2
2
, giving an output voltage of
1
Figure 13.
and, since the voltage is constant, a constant current I
REF
, between the output and adjustment terminal. The
Output
1
then flows
KA350
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