KA79M12TU Fairchild Semiconductor, KA79M12TU Datasheet

IC REGULATOR 0.5A -12V 4% TO-220

KA79M12TU

Manufacturer Part Number
KA79M12TU
Description
IC REGULATOR 0.5A -12V 4% TO-220
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of KA79M12TU

Regulator Topology
Negative Fixed
Voltage - Output
-12V
Voltage - Input
Down to -35V
Voltage - Dropout (typical)
1.1V @ 500mA
Number Of Regulators
1
Current - Output
500mA
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Polarity
Negative
Number Of Outputs
1
Output Type
Fixed
Output Voltage
- 12 V
Output Current
0.5 A
Line Regulation
80 mV
Load Regulation
240 mV
Dropout Voltage (max)
1.1 V
Input Voltage Max
- 40 V
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
0 C
Mounting Style
Through Hole
Voltage Regulation Accuracy
5 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
KA79M12TU
Manufacturer:
FAIRCHILD
Quantity:
10 000
Part Number:
KA79M12TU
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
Features
• No External Components Required
• Output Current in Excess of 0.5A
• Internal Thermal Overload
• Internal Short Circuit Current Limiting
• Output Transistor Safe Area Compensation
• Output Voltages of -5V,-6V,-8V, -12V,-15V,-18V,-24V
Schematic Diagram
©2011 Fairchild Semiconductor Corporation
KA79MXX
3-Terminal 0.5A Negative Voltage Regulator
Q1
D2
D1
D3
Q2
Q4
R1
Q3
Q5
Q8
Q6
R4
Q9
R3
R2
Q10
R5
Q11
Q7
Q12
R6
R7
R24
R8
D5
Q13
Q14
R25
R9
Q15
Q19
Q16
Q20
R10 R11
Description
The KA79MXX series of 3-Terminal medium current
negative voltage regulators are monolithic integrated circuits
designed as fixed voltage regulators. These regulators
employ internal current limiting, thermal shutdown and
safe area compensation making them essentially
indestructible.
1. GND 2. Input 3. Output
R18
TO-220
R12
Q17
R13
D-PAK
1
1
R19
Q24 Q25
Q18
C1
Q21 Q22
C2
R17
D4
R21
R20
Q23
www.fairchildsemi.com
R14
R22
Q26
Q27
R15
R16
R23
OUT
GND
IN
Rev. 1.0.1

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KA79M12TU Summary of contents

Page 1

... ©2011 Fairchild Semiconductor Corporation Description The KA79MXX series of 3-Terminal medium current negative voltage regulators are monolithic integrated circuits designed as fixed voltage regulators. These regulators employ internal current limiting, thermal shutdown and safe area compensation making them essentially indestructible. TO-220 D-PAK 1. GND 2. Input 3. Output ...

Page 2

KA79MXX Absolute Maximum Ratings Parameter Input Voltage(for V = -5V to -18V) O (for V = -24V) O Thermal Resistance Junction-Cases Thermal Resistance Junction-Air Operating Temperature Range Storage Temperature Range Electrical Characteristics (KA79M05/KA79M05R) (Refer to test circuit, 0°C ≤T ≤ ...

Page 3

Electrical Characteristics (KA79M06) (Refer to test circuit, 0°C ≤T ≤ +125° Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current ...

Page 4

KA79MXX Electrical Characteristics (KA79M08/KA79M08R) (Refer to test circuit, 0°C ≤ T ≤ +125° Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short ...

Page 5

Electrical Characteristics (KA79M12) (Refer to test circuit, 0°C ≤ T ≤ +125° Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit ...

Page 6

KA79MXX Electrical Characteristics (KA79M15) (Refer to test circuit, 0°C ≤ T ≤ +125° Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short ...

Page 7

Electrical Characteristics (KA79M18) (Refer to test circuit, 0°C ≤ T ≤ +125° Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit ...

Page 8

KA79MXX Electrical Characteristics (KA79M24) (Refer to test circuit, 0°C ≤ T ≤ +125° Parameter Output Voltage Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short ...

Page 9

Typical Applications V I 2.0uF 2.2uF SOLID TANTALUM Note: 1. Required for stability. For value given, capacitor must be solid tantalum. 25μF aluminum electrolytic may be substituted improves transient response and ripple rejection. Do ...

Page 10

KA79MXX Mechanical Dimensions Package 9.90 ±0.20 (8.70) ±0.10 ø3.60 ±0.10 1.27 2.54TYP ±0.20 [2.54 ] ±0.20 10.00 10 TO-220 ±0.10 1.52 ±0.10 0.80 0.50 2.54TYP ±0.20 [2.54 ] Dimensions in millimeters ±0.20 4.50 +0.10 1.30 –0.05 +0.10 ±0.20 2.40 –0.05 ...

Page 11

Mechanical Dimensions Package ±0.20 6.60 5.34 ±0.30 (0.50) (4.34) MAX0.96 2.30TYP [2.30±0.20] (Continued) D-PAK (0.50) ±0.10 0.76 2.30TYP [2.30±0.20] ±0.20 6.60 (5.34) (5.04) (1.50) (2XR0.25) Dimensions in millimeters ±0.10 2.30 ±0.10 0.50 ±0.10 0.50 1.02 ±0.20 ±0.20 2.30 0.76 ±0.10 ...

Page 12

... KA79M08R KA79M12R DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. ...

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