KA79L12AZ - Boca Semiconductor - Datasheet.Directory

www.fairchildsemi.com

Rev. 1.0.1

Features

• Output current up to 100mA

• No external components

• Internal thermal over load protection

• Internal short circuit current limiting

• Output Voltage Offered in ± 5% Tol erance

• Output Voltage of -5V, -8V, -12V, -15V, -18V

and -2 4V

Description

These regulators employ internal current limiting and ther-

mal shutdown, making them essentially indestructible.

TO-92

1.GND 2.Input 3.Output

8-SOP

SOT-89

1. Ou tput 2.3.6.7. GND 4.5. NC 8. Input

Internal Block Diagram

Output

Input

KA79LXXA

3-Terminal 0.1A Negative Voltage R egulator

Boca Semiconductor Corp.

BSC

http://www.bocasemi.com

KA79LXXA

Absolute Maximum Ratings

Electric al C ha racteristic s(K A 79L05A )

(VI = -10V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified)

Note

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter Symbol Value Unit

Input Voltage (for Vo= -5V to -8V)

(for Vo= -12V to -18V)

(for Vo= -24V) VI-30

-35

-40 V

Operating Temperature Range TOPR 0 ~ +125 °C

Storage Temperature Range TSTG -65 ~ +150 °C

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage VOTJ = +25 °C - 4.8 - 5.0 - 5.2 V

Line Regulation (Note1) ∆VOTJ =+25 °C-7.0V ≥ VI ≥-20V - 15 150 mV

-8V ≥ VI ≥-20V - - 100 mV

Load Regulation (Note1) ∆VOTJ =+25 °C1.0mA ≤ IO ≤

100mA -2060mV

1.0mA ≤ IO ≤ 40mA - 10 30 mV

Output Voltage VO-7.0V ≥ VI ≥ -20V, 1.0mA ≤ IO ≤ 40mA - 4.75 - - 5.25 V

VI = -10V, 1.0mA≤ IO ≤70mA - 4.75 - - 5.25 V

Quiescent Current IQTJ =+ 25 °C-2.05.5

TJ = +125 °C--6.0

Quiescent Current

Change with line ∆IQ-8V≥ VI ≥-20V - - 1.5 mA

with load ∆IQ1.0mA≤ IO ≤40mA - - 0.1 mA

Output Noise Voltage VNTA = +25°C,10Hz≤f≤100KHz - 30 - µV

Ripple Rejection RR f = 120Hz, -8V≥VI ≥-18V

TJ = +25°C41 60 - dB

Dropout Voltage VDTJ = +25°C-1.7-V

KA79LXXA

Electrical Char a cte ri sti cs (KA7 9L08A)

(VI = -14V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified)

Note

1. L oad and line regu lat ion a re s pec ifie d at c ons tant junc ti on tem per atur e. Ch ange in VO due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage VOTJ = +25 °C - 7.7 - 8.0 - 8.3 V

Line Regulation (Note1) ∆VOTJ =+25 °C-10.3V ≥ VI ≥ -23V - - 175 mV

-12V ≥ VI ≥ -23V - - 125 mV

Load Regulation (Note1) ∆VOTJ =+25 °C1.0mA ≤ Io ≤ 100mA - - 80 mV

1.0mA ≤ Io ≤ 40mA - - 40 mV

Output Voltage VO-10.3V ≥ VI ≥ -23V, 1.0mA ≤ Io ≤ 40mA - 7.6 - - 8.4 V

VI = -14V, 1.0mA ≤ Io ≤ 70mA - 7.6 - - 8.4

Quiescent Current IQTj =+ 25 °C--6.0

Tj = +125 °C--5.5

Quiescent Current

Change with line ∆IQ-11.7V ≥ VI ≥ -23V - - 1.5 mA

with load 1.0mA ≤ Io ≤ 40mA - - 0.1 mA

Output Noise Voltage VNTj = +25°C,10Hz ≤ f ≤ 100KHz - 50 - µV

Ripple Rejection RR f = 120Hz, -11V ≥ VI ≥ -21V

Tj = +25°C39 55 - dB

Dropout Voltage VDTj = +25°C-1.7-V

KA79LXXA

Electric al C ha racteristic s(K A 79L12A )

(VI = -19V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified)

Note

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage VOTJ = +25 °C -11.5 -12.0 -12.5 V

Line Regulation (Note1) ∆VOTJ = +25 °C-14.5V ≥VI ≥-27V - - 250 mV

-16V≥VI ≥-27V - - 200 mV

Load Regulation (Note1) ∆VOTJ = +25 °C1.0mA≤ IO ≤100mA - - 100 mV

1.0mA≤ IO ≤40mA - - 50 mV

Output Voltage VO-14.5V >VI > -27V, 1.0mA ≤IO ≤ 40mA -11.4 - -12.6 V

VI = -19V, 1.0mA ≤ IO ≤ 70mA -11.4 - -12.6 V

Quiescent Current IQTJ = +25 °C--6.0

TJ = +125 °C--6.5

Quiescent Current

Change with line ∆IQ-16V ≥ VI ≥ -27V - - 1.5 mA

with load ∆IQ1.0mA ≤ IO ≤ 40mA - - 0.1 mA

Output Noise Voltage VNTA = +25°C,10Hz ≤ f ≤ 100KHz - 80 - µV

Ripple Rejection RR f = 120Hz, -15V ≥ VI ≥ -25V

TJ = +25°C37 42 - dB

Dropout Voltage VDTJ = +25°C-1.7-V

KA79LXXA

Electric al C ha racteristic s(K A 79L15A )

(VI = -23V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified)

Note

1. L oad and line regu lat ion a re s pec ifie d at c ons tant junc ti on tem per atur e. Ch ange in VO due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage VOTJ = +25 °C -14.4 -15.0 -15.6 V

Line Regulation (Note1) ∆VOTJ = +25 °C-17.5V ≥ VI ≥ -30V - - 300 mV

-20V ≥ VI ≥ -30V - - 250 mV

Load Regulation (Note1) ∆VOTJ = +25 °C1.0mA ≤ IO ≤ 100mA - - 150 mV

1.0mA ≤ IO ≤ 40mA - - 75 mV

Output Voltage VO-17.5V ≥ VI ≥ -30V, 1.0mA ≤ IO ≤ 40mA -14.25 - -15.75 V

VI = -23V, 1.0mA ≤ IO ≤ 70mA -14.25 - -15.75 V

Quiescent Current IQTJ = +25°C--6.0

TJ = +125°C--6.5

Quiescent Current

Change with line ∆IQ-20V ≥ VI ≥ -30V - - 1.5 mA

with load ∆IQ1.0mA ≤ IO ≤ 40mA - - 0.1 mA

Output Noise Voltage VNTA = +25°C,10Hz ≤ f ≤ 100KHz - 90 - µV

Ripple Rejection RR f = 120Hz, -18.5V ≥ VI ≥ -28.5V

TJ = +25°C34 39 - dB

Dropout Voltage VDTJ = +25°C-1.7-V

KA79LXXA

Electric al C ha racteristic s(K A 79L18A )

(VI = -27V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified)

Note

1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage VOTJ = +25 °C -17.3 -18.0 -18.7 V

Line Regulation (Note1) ∆VOTJ = +25 °C-20.7V ≥ VI ≥ -33V - - 325 mV

-21V ≥ VI ≥ -33V - - 275 mV

Load Regulation (Note1) ∆VOTJ = +25 °C1.0mA ≤ IO ≤ 100mA - - 170 mV

1.0mA ≤ IO ≤ 40mA - - 85 mV

Output Voltage VO-20.7V > VI > -33V, 1.0mA ≤ IO ≤ 40mA -17.1 - -18.9 V

VI = -27V, 1.0mA ≤ IO ≤ 70mA -17.1 - -18.9 V

Quiescent Current IQTJ = +25°C--6.5

TJ = +125°C--6.0

Quiescent Current

Change with line ∆IQ-21V ≥ VI ≥ -33V - - 1.5 mA

with load ∆IQ1.0mA ≤ IO ≤ 40mA - - 0.1 mA

Output Noise Voltage VNTA =+25°C,10Hz ≤ f ≤ 100KHz - 150 - µV

Ripple Rejection RR f = 120Hz, -23V ≥ VI ≥ -33V

TJ = +25°C33 48 - dB

Dropout Voltage VDTJ = +25°C-1.7-V

KA79LXXA

Electric al C ha racteristic s(K A 79L24A )

(VI = -33V, IO = 40mA, CI = 0.33µF, CO = 0.1µF, 0°C ≤TJ ≤ +125°C, unless otherwise specified)

Note

1. L oad and line regu lat ion a re s pec ifie d at c ons tant junc ti on tem per atur e. Ch ange in VO due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter Symbol Conditions Min. Typ. Max. Unit

Output Voltage VOTJ = +25 °C -23 -24 -25 V

Line Regulation (Note1) ∆VOTJ = +25 °C-27V ≥ VI ≥ -38V - - 350 mV

-28V ≥ VI ≥ -38V - - 300 mV

Load Regulation (Note1) ∆VOTJ = +25 °C1.0mA ≤ IO ≤100mA - - 200 mV

1.0mA ≤ IO ≤ 40mA - - 100 mV

Output Voltage VO-27V ≥ VI ≥ -38V, 1.0mA ≤ IO ≤ 40mA -22.8 - -25.2 V

VI = -33V, 1.0mA ≤ IO ≤ 70mA -22.8 - -25.2 V

Quiescent Current IQTJ = +25°C--6.5

TJ = +125°C--6.0

Quiescent Current

Change with line ∆IQ-28V ≥ VI ≥ -38V - - 1.5 mA

with load ∆IQ1.0mA ≤ IO ≤ 40mA - - 0.1 mA

Output Noise Voltage VNTA = +25°C,10Hz ≤ f ≤100KHz - 200 - µV

Ripple Rejection RR f = 120Hz, -29V ≥ VI ≥ -35V

TJ = +25°C31 47 - dB

Dropout Voltage VDTJ = +25°C-1.7-V

KA79LXXA

Typical Application

Design Considerations

The KA79LXXA Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit

when subjected to an excessive power overload con dition. In ternal Short Circuit Protection that limits the maximum curren t

the circuit will pass. In many low current applications , compensatio n capacitors are not re quired. However, it is recommended

that the regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire

lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high frequency

characteristics to insure stable operation under all load conditions. A 0.33µF or larger tantalum, mylar, or other capacitor hav-

ing low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest

possible leads directly across the regulator's input terminals. Normally good construction techniques should be used to mini-

mize ground loops and lead resistance drops since the regulator has no external sense lead. Bypassing the output is also recom-

mended.

A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0V above

the output voltage even during the low point on the input ripple voltage.

* C1 is required if regulator is located an appreciable distance from power supply filter.

* CO improves stability and transient response.

Figure 1. Positive And Negative Reg ulato r Fi gure 2. Typic al Ap plication

KA79LXXA

Mechanical Dimensions

Package

0.46

±0.10

1.27TYP

(R2.29)

3.86MAX

[1.27

±0.20

]1.27TYP

[1.27

±0.20

]

3.60

±0.20

14.47

±0.40

1.02

±0.10

(0.25) 4.58

±0.20

4.58

+0.25

–0.15

0.38

+0.10

–0.05

0.38

+0.10

–0.05

TO-92

KA79LXXA

Mechanical Dimensions(Continued)

Package

4.92 ±0.20

0.194 ±0.008

0.41 ±0.10

0.016 ±0.004

1.27

0.050

5.72

0.225

1.55 ±0.20

0.061 ±0.008

0.1~0.25

0.004~0.001

6.00 ±0.30

0.236 ±0.012

3.95 ±0.20

0.156 ±0.008

0.50 ±0.20

0.020 ±0.008

5.13

0.202 MAX

#4 #5

0~8°

0.56

0.022

()

1.80

0.071

MAX0.10

MAX0.004

MAX

MIN

+0.10

-0.05

0.15+0.004

-0.002

0.006

8-SOP

KA79LXXA

Mechanical Dimensions (Continued)

Package

SOT-89

0.40

±0.10

2.50

±0.20

(0.50)

(0.40)

4.10

±0.20

0.40

+0.10

–0.05

0.50

±0.10

1.65

±0.10

4.50

±0.20

1.50

±0.20

C0.2

1.50 TYP 1.50 TYP

(1.10)

KA79LXXA

Ordering Information

Product Number Package Operating Temperature

KA79L05AZ

TO-92 0 ~ + 125°C

KA79L08AZ

KA79L12AZ

KA79L15AZ

KA79L18AZ

KA79L24AZ

KA79L05AD 8-SOP

KA79L05AM SOT-89

http://www.bocasemi.com