7805SR Просмотр технического описания (PDF) - DATEL Data Acquisition products
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7805SR
DATEL Data Acquisition products
7805SR Datasheet PDF : 5 Pages
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78SR Series
HIGH-EFFICIENCY SWITCHING REGULATORS
Technical Notes (continued)
of the pc-board. However, because the surface of inductor L1 on
78XXSRH models is electrically conductive, it must not be allowed to
come in contact with any exposed pc-board traces, other than power
ground (GND).
While the 2-mil-thick (0.05mm) polyester label attached to L1 provides
some degree of electrical insulation (only if L1 sits perfectly flat on
the pc-board), it is recommended that a 0.020” (0.5mm) clearance be
maintained between L1 and all exposed pc-board traces.
8. Dropout Voltage: 78SR series regulators described in this data sheet
specify a minimum input voltage at which full-load accuracy and output
regulation are guaranteed (7.5V for 7803SR and 7805SR, and 15.0V
for 7812SR). However, these devices will stay in regulation at lower
input voltages if they are operated at less than their rated loads.
The following dropout-voltage data, derived from sample testing per-
formed at an ambient temperature of +25°C with resistive loads, should
be used for information purposes only. For these tests, a unit was
considered to be out of regulation when its output changed by more
+/-0.005Vdc from its nominal value. All voltages were measured directly
at the regulator’s I/O pins.
Typical Dropout Voltage
7803SR
7805SR
7812SR
0% Load
6.0V
6.3V
12.8V
25% Load
6.2V
6.2V
13.0V
50% Load
6.2V
6.2V
12.8V
100% Load
6.3V
6.8V
13.0V
Performance/Functional Specifications
Typical at TA = +25°C
Input/Output
Models
Output Voltage
Rated Output Current
Output Voltage Accuracy
Input Voltage Range ➀
Line Regulation (100% load)
Load Regulation (0-100% load)
Quiescent Current
Input Current
Efficiency
Transient Response
Input & Output Noise
Short Circuit Protection ➁
Isolation
Overvoltage Protection
Undervoltage Protection
Environmental
Models
Operating Temperature
Storage Temperature
Cooling
Humidity (Non-condensing)
Physical
Mechanical
Package
Pins
Weight
Pin Soldering
7803SR
7805SR 7812SR
+3.3Vdc
+5.0Vdc +12.0Vdc
0.5A
0.5A
0.4A
±2%
±1.5%
±2%
+7.5-36Vdc +7.5-36Vdc +15-36Vdc
±0.3%
±0.3%
±0.3%
±0.2%
±0.2%
±0.2%
3mA typ., 5mA max.
See Performance Curves
See Performance Curves
See Performance Curves
See Performance Curves
Continuous
None
None
None
7803SR
7805SR 7812SR
–40 to +70°C
–40 to +85°C
Free Air Convection
0 to 85%
See Mechanical Specifications
Open-frame SIP
0.025” (0.64mm) square,
tin-plated bronze
0.08 ounces (2.2g)
+260°C for 5 seconds
➀ See Technical Note 5.
➁ While these regulators can withstand a continuous short-circuit across their
output terminals, they will experience a significant temperature rise. Extended
short-circuit operation will adversely affect the unit’s reliability.
Ordering Information
DATEL Part No. Output Voltage
Standard Pin Package
7803SR
+3.3Vdc
7805SR
+5.0Vdc
7812SR
+12.0Vdc
Horizontal Pin Package
7803SRH
+3.3Vdc
7805SRH
+5.0Vdc
7812SRH
+12.0Vdc
Output Current
0.5A
0.5A
0.4A
0.5A
0.5A
0.4A
Input Voltage
+7.5-36Vdc
+7.5-36Vdc
+15-36Vdc
+7.5-36Vdc
+7.5-36Vdc
+15-36Vdc
DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • E–mail: sales@datel.com • Internet: www.datel.com
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