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V7805-500 [CUI]

DC switching regulator, non-isolated; DC开关稳压器，非隔离
V7805-500
型号： V7805-500
厂家： CUI INC    CUI INC
描述：

DC switching regulator, non-isolated
DC开关稳压器，非隔离

稳压器 开关
文件： 总6页 (文件大小：411K)
中文：  中文翻译
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page 1 of 6  
date 06/2008  
PART NUMBER: V78XX-500 series  
DESCRIPTION: DC switching regulator, non-isolated  
features  
description  
·efficiency up to 96%  
·no need for heatsinks  
·wide input range  
·short circuit protection  
·thermal shutdown  
·low ripple and noise  
·pin compatible to LM78XX  
series  
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.  
·non-isolated  
model  
number  
input voltage  
range  
4.75~28 Vdc  
6.5~32 Vdc  
8~32 Vdc  
11~32 Vdc  
15~32 Vdc  
18~32 Vdc  
output  
voltage  
3.3 Vdc  
5 Vdc  
6.5 Vdc  
9 Vdc  
output  
current  
500 mA  
500 mA  
500 mA  
500 mA  
500 mA  
500 mA  
efficiency  
Vin_max  
Vin_min  
90%  
93%  
94%  
95%  
V7803-500  
V7805-500  
V7806-500  
V7809-500  
V7812-500  
V7815-500  
80%  
84%  
87%  
91%  
92%  
93%  
12 Vdc  
15 Vdc  
95%  
96%  
*see Application Notes section (page 5) for positive to negative conversion options.  
OUTPUT SPECIFICATIONS  
item  
conditions  
min.  
typ.  
2
max.  
3
unit  
%
output voltage accuracy  
at 100% load  
line regulation  
load regulation  
output ripple  
Vin = min. to max. at full load  
10% to 100% full load  
20 MHz bandwidth, output w/ 10μF cap  
0.2  
0.4  
20  
0.4  
0.6  
35  
%
%
mVp-p  
short circuit protection  
short circuit input power  
output current limit  
switching frequency  
dynamic load stability  
quiescent current  
thermal shutdown  
temperature coefficient  
max load capacitance  
continuous, auto recovery upon removal of short  
load impedance is≤ 0.1Ω  
subject to over-temp shutdown  
0.3  
0.8  
2000  
450  
100  
7
W
mA  
KHz  
mV  
mA  
°C  
fixed switching frequency topology  
100%<->10% load  
280  
330  
Vin_min to Vin_max at no load  
internal IC junction  
-40°C ~ 85°C ambient  
5
150  
0.02  
1000  
%/°C  
μF  
GENERAL SPECIFICATIONS  
item  
conditions  
min.  
-40  
-40  
typ.  
max.  
85  
100  
125  
unit  
°C  
°C  
operating temperature range  
operating case temperature  
storage temperature range  
cooling  
see derating curve  
-55  
°C  
free air convection  
solderability  
storage humidity range  
case material  
1.5 mm from case for 10 seconds  
relative humidity, non-condensing  
plastic (UL94-V0)  
300  
95  
°C  
%
10  
case thermal impedance  
MTBF  
package weight  
70  
°C/W  
hours  
grams  
at 25°C per MIL-HDBK-217F  
2,000,000  
2.0  
th  
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382  
page 2 of 6  
date 06/2008  
PART NUMBER: V78XX-500 series  
DESCRIPTION: DC switching regulator, non-isolated  
MECHANICAL DRAWINGS  
Recommended PCB Layout Pattern  
1.00 +0.15/-0  
[0.040 +0.006/-0]  
11.50 0.453  
7.65 0.301  
1
2
3
10.20 0.402  
4.00  
0.50 0.020  
(TYP)  
Top View  
2.54  
[0.100]  
(3 PLCS)  
0.50 0.020  
(3 PLCS)  
1
2
3
PIN  
ASSIGNMENTS  
+Vin  
1
2
3
GND  
+Vout  
3.21 0.126  
5.08 0.200  
0.30 0.012  
(3 PLCS)  
2.10 0.083  
(3 PLCS)  
units: mm(inches)  
pin tolerances: 0.10( 0.004)  
general tolerances: 0.25( 0.01)  
2.54 0.100  
(2 plcs)  
THERMAL DERATING CURVE  
Temperature Derating Graph  
Operating Temp.(  
C )  
th  
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382  
page 3 of 6  
date 06/2008  
PART NUMBER: V78XX-500 series  
DESCRIPTION: DC switching regulator, non-isolated  
TYPICAL APPLICATION CIRCUIT  
Vout  
Vin  
1
3
V78XX-500  
2
C2  
100μF/25V  
C1  
10μF/50V  
GND  
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.  
TEST CIRCUIT  
FOR EFFICIENCY & RIPPLE GRAPHS (PAGE4)  
Electronic  
Load  
Current  
Meter  
Current  
Meter  
+Vout  
+
-
+Vin  
30cm, 18AWG  
Twisted  
DC/DC  
Converter  
A
B
Cin  
Voltage  
Meter  
Voltage  
Meter  
DC Power  
Source  
20MHz  
Oscilloscope  
Cout  
GND  
0V  
+
A
+
A
A
B
C01  
C02  
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.  
B
B
-
4. All points labeled B refer to one junction.  
5. Use a short ground loop for probing. Do not use a wired ground clip.  
th  
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382  
page 4 of 6  
date 06/2008  
PART NUMBER: V78XX-500 series  
DESCRIPTION: DC switching regulator, non-isolated  
EFFICIENCY AND RIPPLE  
Output  
Ripple  
Efficiency  
50  
40  
100  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
V7803-500  
V7805-500  
V7806-500  
V7809-500  
V7812-500  
V7815-500  
V7803-500  
V7805-500  
V7806-500  
V7809-500  
V7812-500  
V7815-500  
30  
20  
10  
0
Vin(V)  
Vin(V)  
10  
20  
30 32  
10  
20  
30 32  
Efficiency vs. Vin (Full Load)  
Ripple vs. Vin ( Full Load)  
100  
95  
90  
85  
80  
75  
70  
65  
60  
50  
40  
30  
20  
10  
0
V7803-500  
V7805-500  
V7806-500  
V7809-500  
V7812-500  
V7815-500  
V7803-500  
V7805-500  
V7806-500  
V7809-500  
V7812-500  
V7815-500  
100  
200  
300  
400  
500  
600  
100  
200  
300  
400  
500  
600  
Output Current (mA)  
Output Current(mA)  
Ripple vs. Load (Vin=Vin_min)  
Efficiency vs. Load (Vin=Vin_min)  
100  
90  
80  
70  
60  
50  
40  
30  
20  
50  
40  
30  
20  
10  
0
V7803-500  
V7805-500  
V7806-500  
V7809-500  
V7812-500  
V7815-500  
V7803-500  
V7805-500  
V7806-500  
V7809-500  
V7812-500  
V7815-500  
100  
200  
300  
400  
500  
600  
100  
200  
300  
400  
500  
600  
Output Current (mA)  
Output Current (mA)  
Ripple vs. Load (Vin=24V)  
Efficiency vs. Load (Vin=Vin_max)  
th  
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382  
page 5 of 6  
date 06/2008  
PART NUMBER: V78XX-500 series  
DESCRIPTION: DC switching regulator, non-isolated  
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.  
model  
number  
input voltage  
range  
output  
voltage  
-3.3 Vdc  
-5 Vdc  
-6.5 Vdc  
-9 Vdc  
output  
current  
400 mA  
400 mA  
300 mA  
200 mA  
200 mA  
200 mA  
efficiency  
Vin_max  
Vin_min  
73%  
76%  
83%  
87%  
V7803-500  
V7805-500  
V7806-500  
V7809-500  
V7812-500  
V7815-500  
4.75~25 Vdc  
6~27 Vdc  
6~25 Vdc  
7~23 Vdc  
7~20 Vdc  
7~17 Vdc  
78%  
83%  
85%  
86%  
87%  
89%  
-12 Vdc  
-15 Vdc  
85%  
84%  
OUTPUT SPECIFICATIONS  
item  
conditions  
at 100% load  
min.  
typ.  
2
max.  
3
unit  
%
output voltage accuracy  
line regulation  
load regulation  
output ripple  
Vin = min. to max. at full load  
10% to 100% full load  
20 MHz bandwidth, output w/ 10μF cap  
0.2  
0.4  
20  
0.4  
0.6  
35  
%
%
mVp-p  
short circuit protection  
short circuit input power  
switching frequency  
dynamic load stability  
quiescent current  
thermal shutdown  
temperature coefficient  
max load capacitance  
continuous, auto recovery upon removal of short  
0.5  
330  
1.2  
450  
100  
10  
W
fixed switching frequency topology  
100%<->10% load  
280  
KHz  
mV  
mA  
°C  
%/°C  
μF  
Vin_min to Vin_max at no load  
internal IC junction  
-40°C ~ 85°C ambient  
7
150  
0.02  
1000  
TYPICAL CHARACTERISTICS  
th  
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382  
page 6 of 6  
date 06/2008  
PART NUMBER: V78XX-500 series  
DESCRIPTION: DC switching regulator, non-isolated  
TYPICAL APPLICATION CIRCUITS  
1. Negative output  
2. Positive and Negative outputs  
EXTERNAL CAPACITOR TABLE  
th  
20050 SW 112 Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382  

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