L78M09CP STMicroelectronics, L78M09CP Datasheet - Page 18

• Manufacturer Part Number: L78M09CP
• Description: IC REG POS 500MA 9V PREC TO220FP
• Manufacturer: STMicroelectronics

Specifications of L78M09CP

• Regulator Topology: Positive Fixed
• Voltage - Output: 9V
• Voltage - Input: Up to 35V
• Voltage - Dropout (typical): 2V @ 350mA
• Number Of Regulators: 1
• Current - Output: 500mA
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack (Straight Leads)
• Polarity: Positive
• Number Of Outputs: 1
• Output Type: Fixed
• Output Voltage: 9 V
• Output Current: 0.5 A
• Line Regulation: 100 mV
• Load Regulation: 180 mV
• Dropout Voltage (max): 2 V
• Input Voltage Max: 35 V
• Maximum Operating Temperature: + 150 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Applications information
Figure 19. Current boost regulator
Figure 20. Short-circuit protection
Note:
18/29
R
I
O
1
= I
= ______________
REG
I
REQ
+ Q
The circuit of
by adding a short-circuit sense resistor, R
sensing PNP must be able to handle the short-circuit current of the three-terminal regulator.
Therefore, a four ampere plastic power transistor is specified.
V
-(I
BEQ1
Q1
1
(I
/b
REG
Q1
)
______)
V
BEQ1
R
Figure 19
1
can be modified to provide supply protection against short-circuits
Doc ID 2147 Rev 10
SC
, and an additional PNP transistor. The current
L78MxxAB, L78MxxAC