KA7905 Просмотр технического описания (PDF) - Fairchild Semiconductor

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KA7905

3-Terminal 1A Negative Voltage Regulator

Fairchild Semiconductor 

KA79XX/KA79XXA

Absolute Maximum Ratings

Parameter

Input Voltage

Thermal Resistance Junction-Case (Note1)

Thermal Resistance Junction-Air (Note1, 2)

Operating Temperature Range

Storage Temperature Range

Note:

1. Thermal resistance test board

Size: 76.2mm * 114.3mm * 1.6mm(1S0P)

JEDEC standard: JESD51-3, JESD51-7

2. Assume no ambient airflow

Symbol

VI

RθJC

RθJA

TOPR

TSTG

Value

-35

5

65

0 ~ +125

- 65 ~ +150

Unit

V

°C/W

°C/W

°C

°C

Electrical Characteristics (KA7905)

(VI = -10V, IO = 500mA, 0°C ≤ TJ ≤ +125°C, CI =2.2µF, CO =1µF, unless otherwise specified.)

Parameter

Symbol

Conditions

Output Voltage

TJ = +25°C

VO IO = 5mA to 1A, PO ≤15W

VI = -7V to -20V

Line Regulation (Note3)

∆VO TJ = +25°C

VI = -7V to -25V

VI = -8V to -12V

Load Regulation (Note3)

∆VO

TJ = +25°C, IO = 5mA to 1.5A

TJ =+25°C, IO = 250mA to 750mA

Quiescent Current

IQ TJ =+25°C

Quiescent Current Change

∆IQ IO = 5mA to 1A

VI = -8V to -25V

Temperature Coefficient of VD ∆Vo/∆T IO = 5mA

Output Noise Voltage

VN f = 10Hz to 100kHz, TA = +25°C

Ripple Rejection

RR f = 120Hz, ∆VI = 10V

Dropout Voltage

VD TJ =+25°C, IO = 1A

Short Circuit Current

ISC TJ =+25°C, VI = -35V

Peak Current

IPK TJ =+25°C

Min. Typ. Max. Unit

-4.8 -5.0 -5.2

V

-4.75 -5.0 -5.25

- 35 100

mV

- 8 50

- 10 100

mV

- 3 50

- 3 6 mA

- 0.05 0.5

mA

- 0.1 0.8

- -0.4 - mV/°C

- 40 - µV

54 60 - dB

-2-

V

- 300 - mA

- 2.2 -

A

Note

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

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

2

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