PJ7900 Series

3-Terminal Negative Output Voltage Regulators

2-9

2002/10.rev.A

RATING

SYMBOL

PJ7900 Series

UNIT

Input Voltage *(-5V≧Vo≧-18V)

**(-24V)

Vin

-35

-40

V

Power Dissipation

TO-220

TO-220

TO-220F

Without heatsink

Pt ***

With

heatsink

2

15

10

℃

/W

Operating Ambient Temperature

Topr

-20 to +85

℃

Operating Junction Temperature

Tj

0 to +125

℃

Storage Temperature

Tstg

-25 to +150

℃

Note: *1: PJ7905 to PJ7918

**2: PJ7924

***3: Follow the derating curve. When Tj exceeds 150℃, the internal circuit cuts off the output.

(Vin=-10V, Iout=500mA, Cin=2μF, Cout=1μF; Tj=0℃ to 125℃, unless otherwise specified.)

CHARACTERISTIC

SYMBOL

TEST

CIRCUIT

CONDITION

MIN.

TYP.

MAX

UNIT

-4.80

-5.0

-5.20

V

Output Voltage

Vo

1

-4.75

-5.0

-5.25

V

Vi=-7 to -25V

--

3

100

mV

Line Regulation

REGline

1

Vi=-8 to -12V

--

1

50

mV

Io=5mA to 1.5A

--

10

100

mV

Load Regulation

REGload

1

Io=250mA to 750mA

--

3

50

mV

Quiescent Current

I

q

2

--

2

4

mA

VIN=-7 to -25V

--

--

1.3

Quiescent current Change

q

2

Io=5mA to 1.5A

0.5

mA

Output Noise Voltage

Vn

1

--

40

--

Ripple Rejection Ratio

RR

3

Vi=-8 to -18V, Io=100mA, f=120Hz

62

74

--

dB

Min. I/O Voltage Difference

Vdif

--

1.1

--

V

Peak Output Current

Io-peak

1

--

2.1

--

A

Output Voltage Tempoerature

Coefficient

1

--

-0.4

--

mV/

℃

characteristic value due to the rise in chip junction temperature can be ignored.

STANDARD APPLICATION

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

more negative even during the high point on the input ripple voltage.

XX = these two digits of the type number indicate voltage.

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

** = Co improves stability and transient response.