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參數(shù)資料
| 型號(hào)： | 7803SRH |
| 廠商： | CD TECHNOLOGIES INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 文件頁(yè)數(shù)： | 2/5頁(yè) |
| 文件大?。?/td> | 1391K |
| 代理商： | 7803SRH |
H I G H - E F F I C I E N C Y S W I T C H I N G R E G U L A T O R S
78SR Series
H I G H - E F F I C I E N C Y S W I T C H I N G R E G U L A T O R S
MPM_78SR_G00 Page 2 of 5
D I G I T A L P A N E L M E T E R S
www.cd4power.com
TECHNICAL NOTES (continued)
6. Soldering & Handling Precautions:
All units are designed to be
hand soldered to pc-boards using no-clean solders (+260°C, 5
seconds max.). Water-soluble solders can also be used, but the units
must be washed and dried using processes appropriate to the type of
solder employed. See the Mechanical Specifications section for pin 1
orientation and recommended plated-through hole dimensions.
While 78SR regulators easily withstand a 2kV ESD discharge to any
terminal (using human body model), they should always be treated as
ESD sensitive devices.
7. Horizontal-Pin Models (78XXSRH):
78XXSRH switching regulators
are pin-compatible replacements for TO-220 style LM78XX linear
regulators that are installed with their metal tabs lying flat on the sur-
face 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
performed 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.
Input/Output
Models
7803SR
7805SR
7812SR
Output Voltage
+3.3Vdc
+5.0Vdc
+12.0Vdc
Rated Output Current
0.5A
0.4A
Output Voltage Accuracy
±2%
±1.5%
±2%
Input Voltage Range
+7.5-36Vdc
+7.5-36Vdc +15-36Vdc
Line Regulation (100% load)
±0.3%
Load Regulation (0-100% load)
±0.2%
Quiescent Current
3mA typ., 5mA max.
Input Current
See Performance Curves
Efficiency
See Performance Curves
Transient Response
See Performance Curves
Input & Output Noise
See Performance Curves
Short Circuit Protection
Continuous
Isolation
None
Overvoltage Protection
None
Undervoltage Protection
None
Environmental
Models
7803SR
7805SR
7812SR
Operating Temperature
–40 to +70°C
Storage Temperature
–40 to +85°C
Cooling
Free Air Convection
Humidity (Non-condensing)
0 to 85%
Physical
Mechanical
See Mechanical Specifications
Package
Open-frame SIP
Pins
0.025” (0.64mm) square,
tin-plated bronze
Weight
0.08 ounces (2.2g)
Pin Soldering
+260°C for 5 seconds
See Technical Note 5.
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.
0% Load
25% Load
50% Load
100% Load
7803SR
6.0V
6.2V
6.3V
7805SR
6.3V
6.2V
6.8V
7812SR
12.8V
13.0V
12.8V
13.0V
Performance/Functional Specifications
Typical at TA = +25°C
Typical Dropout Voltage
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