rev.

page

date

DESCRIPTION: DC switching regulator, non-isolated

5 of 6

06/2008

20050

phone

phone 503.612.2300 fax

fax 503.612.2382

PART NUMBER: V78XX-500 series

APPLICATION NOTES: Positive to Negative conversion option

application

The V78XX-500 series converters

can also be used to convert a posi-

tive voltage into a negative voltage

with only two extra capacitors need-

ed.

OUTPUT SPECIFICATIONS

item

conditions

min.

typ.

max.

unit

output voltage accuracy

at 100% load

±2

±3

%

line regulation

Vin = min. to max. at full load

±0.2

±0.4

%

load regulation

10% to 100% full load

±0.4

±0.6

%

output ripple

20 MHz bandwidth, output w/ 10μF cap

20

35

mVp-p

short circuit protection

continuous, auto recovery upon removal of short

short circuit input power

0.5

1.2

W

switching frequency

fixed switching frequency topology

280

330

450

KHz

dynamic load stability

100%<->10% load

±100

mV

quiescent current

Vin_min to Vin_max at no load

7

10

mA

thermal shutdown

internal IC junction

150

°C

temperature coefficient

-40°C ~ 85°C ambient

0.02

%/°C

max load capacitance

1000

μF

model

input voltage

output

output

efficiency

number

range

voltage

current

Vin_min

Vin_max

V7803-500

4.75~25 Vdc

-3.3 Vdc

400 mA

73%

78%

V7805-500

6~27 Vdc

-5 Vdc

400 mA

76%

83%

V7806-500

6~25 Vdc

-6.5 Vdc

300 mA

83%

85%

V7809-500

7~23 Vdc

-9 Vdc

200 mA

87%

86%

V7812-500

7~20 Vdc

-12 Vdc

200 mA

85%

87%

V7815-500

7~17 Vdc

-15 Vdc

200 mA

84%

89%

TYPICAL CHARACTERISTICS