V7805-500 Datasheet PDF - CUI

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V7805-500
CUI

Part Number V7805-500
Description DC switching regulator / non-isolated
Page 4 Pages


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PART NUMBER: V78XX-1000 series
rev.
page 1 of 4
date 04/2008
DESCRIPTION: DC switching regulatorw, wnown.D-iastoalSahteeedt4U.com
description
The V78XX series of switching regulators are
designed to replace 78XX linear regulators,
with the objective of drop-in replacement
without the need for a heatsink, because the
V78XX series features high efficiency under
all line conditions. Built-in short-circuit and
over-temperature protections ensure very
rugged operations. Additionally, low ripple
and noise performance make the parts useful
in a wide range of applications.
model
number
V7803-1000
V7805-1000
V7806-1000
V7809-1000
V7812-1000
input voltage
range
4.75~28 Vdc
6.5~32 Vdc
8~32 Vdc
11~32 Vdc
15~32 Vdc
features
·efficiency up to 95%
·no need for heatsinks
·wide input range
·short circuit protection
·thermal shutdown
·low ripple and noise
·pin compatible to LM78XX
series
·non-isolated
output
voltage
3.3 Vdc
5 Vdc
6.5 Vdc
9 Vdc
12 Vdc
output
current
1000 mA
1000 mA
1000 mA
1000 mA
1000 mA
efficiency
Vin_min
90%
Vin_max
83%
93%
88%
94%
90%
95%
92%
95%
94%
OUTPUT SPECIFICATIONS
item
output voltage accuracy
conditions
at 100% load
min.
line regulation
Vin = min. to max. at full load
load regulation
10% to 100% full load
output ripple
20 MHz bandwidth, output w/ 10μF cap
short circuit protection
continuous, auto recovery upon removal of short
short circuit input power
output current limit
load impedance is0.1Ω
subject to over-temp shutdown
switching frequency
fixed switching frequency topology
280
dynamic load stability
100%<->10% load
quiescent current
Vin_min to Vin_max at no load
thermal shutdown
internal IC junction
temperature coefficient
-40°C ~ 85°C ambient
max load capacitance
GENERAL SPECIFICATIONS
item
operating temperature range
conditions
see derating curve
operating case temperature
storage temperature range
cooling
free air convection
solderability
1.5 mm from case for 10 seconds
storage humidity range
relative humidity, non-condensing
case material
plastic (UL94-V0)
case thermal impedance
MTBF
at 25°C per MIL-HDBK-217F
package weight
min.
-40
-40
-55
10
2,000,000
typ.
±2
±0.2
±0.4
20
0.5
330
5
150
typ.
3.7
max.
±3
±0.4
±0.6
35
1.2
2000
450
±100
7
0.02
2000
max.
85
100
125
300
95
50
unit
%
%
%
mVp-p
W
mA
KHz
mV
mA
°C
%/°C
μF
unit
°C
°C
°C
°C
%
°C/W
hours
grams
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382



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PART NUMBER: V78XX-1000 series
rev.
page 2 of 4
date 04/2008
DESCRIPTION: DC switching regulatorw, wnown.D-iastoalSahteeedt4U.com
MECHANICAL DRAWINGS
11.50 0.453
8.90 0.350
17.50 0.689
Recommended PCB Layout Pattern
1.00 +0.15/-0
[0.040 +0.006/-0]
123
0.50 0.020
(TYP)
0.50 0.020
(3 PLCS)
4.10
(3 PLCS)
1 23
2.54 0.100
(2 plcs)
2.15 0.085
(3 PLCS)
3.21 0.126
1 23
0.30 0.012
(3 PLCS)
5.08 0.200
Top View
2.54
[0.100]
PIN ASSIGNMENTS
1 +Vin
2 GND
3 +Vout
units: mm(inches)
pin tolerances: ±0.10(±0.004)
general tolerances: ±0.25(±0.01)
THERMAL DERATING CURVE
Temperature Derating Graph
Operating Temp.( C )
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382



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PART NUMBER: V78XX-1000 series
rev.
page 3 of 4
date 04/2008
DESCRIPTION: DC switching regulatorw, wnown.D-iastoalSahteeedt4U.com
TYPICAL APPLICATION CIRCUIT
Vin 1 V78XX-1000 3 Vout
GND
C1
22μF/50V
2
C2
1 0 0μ F / 2 5 V
INPUT CAPACITOR (C1):
A low ESR capacitor is recommended to keep the noise at the converter to a minimum.
Ceramic capacitors are preferred but tantalum or low ESR electrolytic capacitors may
also suffice. Place C1 as close as possible to pins 1 & 2.
OUTPUT CAPACITOR (C2):
A 100μF/25V electrolytic capacitor is recommended.
NOT FOR PARALLEL OPERATION
This converter is not designed for parallel operation with another to increase output
power.
TEST CIRCUIT
FOR EFFICIENCY & RIPPLE GRAPHS (PAGE4)
+
DC Power
Source
-
Current
Meter
Voltage
Meter
+Vin +Vout
Cin DC/DC
Converter
GND
0V
1. Cin = 10μF / 50V for 500mA and 22μF / 50V for 1A, Cout = 100μF / 16V.
2. C01 = 10μF / 50V Electrolytic, C02 = 0.1μF / 50V Ceramic.
3. All points labeled A refer to one junction.
4. All points labeled B refer to one junction.
5. Use a short ground loop for probing. Do not use a wired ground clip.
Current
Meter
30cm, 18AWG A
Cout
B
Twisted
Voltage
Meter
A +A A
C01 + C02
B
BB
-
Electronic
Load
20MHz
Oscilloscope
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382



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PART NUMBER: V78XX-1000 series
EFFICIENCY AND RIPPLE
rev.
page 4 of 4
date 04/2008
DESCRIPTION: DC switching regulatorw, wnown.D-iastoalSahteeedt4U.com
Efficiency
100
90
V7803-1000
80 V7805-1000
V7812-1000
70
60
4.75 8 12 16 20 24 28
Efficiency VS Vin(Full Load)
32 Vin(V)
Output
Ripple
50
40
30 V7803-1000
V7805-1000
20 V7812-1000
10
0
4.75 8
12 16 20 24 28 32 Vin (V)
Ripple vs. Vin ( Full Load)
100
95
90 V7803-1000
V7805-1000
85 V7812-1000
80
75
40
80 200 400 600 800 1000 1200
Output Current(mA)
Efficiency vs. Load (Vin=Vin_min)
50
45
40
35
30
25
20
15
10
5
0
40
80 200 400 600 800 1000 1200
Output Current (mA)
Ripple vs. Load (Vin=Vin_min)
V7803-1000
V7805-1000
V7812-1000
100
90
80
70
60
50
40
40
80 200 400 600 800 1000 1200
Output Current (mA)
Efficiency vs. Load (Vin=Vin_max)
V7803-1000
V7805-1000
V7812-1000
50
45
40
35
30
25
20
15
10
5
0
40
80 200 400 600 800 1000 1200
Output Current (mA)
Ripple vs. Load (Vin=24V)
V7803-1000
V7805-1000
V7812-1000
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382



V7805-500 datasheet pdf
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V7805-500 DC switching regulator / non-isolated V7805-500
CUI
V7805-500 pdf

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