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參數(shù)資料
| 型號(hào)： | BST-5/250-D48 |
| 廠商： | MURATA POWER SOLUTIONS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 3 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 152K |
| 代理商： | BST-5/250-D48 |
Performance/Functional Specications
Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted.
These power converters require a minimum 10% loading to maintain specied regulation.
Operation under no-load conditions will not damage these devices; however they may not
meet all listed specications.
The current limit inception point is dependent on the input voltage. Therefore, it is possible
to draw current beyond the rated capacity. Users should fully characterize their load conditions.
Input
Input Voltage Range:
"D5" Models
4.5-9 Volts (5V nominal)
"D12" Models
9-18 Volts (12V nominal)
"D48" Models
18-72 Volts (48V nominal)
Input Current
See Ordering Guide
Input Filter Type
Pi
Reverse-Polarity Protection
Yes (Instantaneous, 2A maximum)
Output
VOUT Accuracy (50% load)
±1%, maximum
Temperature Coefcient
±0.02% per °C
Ripple/Noise (20MHz BW)
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efciency
See Ordering Guide
Isolation Voltage
1000Vdc, minimum
Short Circuit Protection:
“D5” Models
Power-limiting technique, auto-recovery
“D12” and “D48” Models
Hiccup technique, auto-recovery
Dynamic Characteristics
Transient Response (50% load step)
200μsec to ±1.5% of nal value
Switching Frequency:
“D48” Models
200kHz
“D5” and “D12” Models
170kHz
Environmental
Operating Temperature
(Ambient, no derating)
–40 to +75°C
Storage Temperature
– 55 to +100°C
Physical
Dimensions
1.25" x 0.8" x 0.45" (31.8 x 20.3 x 11.4mm)
Case Material
Diallyl phthalate, UL94V-0 rated
Pin Material
Gold-plated copper alloy with nickel
underplate
Weight
0.5 ounces (14.2 grams)
Input Voltage:
"D5" Models
12 Volts
"D12" Models
20 Volts
"D48" Models
80 Volts
Input Reverse-Polarity Protection
Current must be <2A. Brief duration
only. Fusing recommended.
Output Overvoltage Protection
None
Output Current
Maximum current and short-circuit
duration are model dependent. “D12”
and “D48” models can withstand
sustained output short circuits.
Storage Temperature
–55 to +100°C
Lead Temperature (soldering, 10 sec.)
+280°C
These are stress ratings. Exposure of devices to greater than any
of these conditions may adversely affect long-term reliability. Proper
operation under conditions other than those listed in the Performance/
Functional Specications Table is not implied or recommended.
Absolute Maximum Ratings
Floating Outputs
Since these are isolated DC/DC converters, their outputs are “oating.” Any
BST model may be congured to produce an output of 10V, 24V or 30V (for
±5V, ±12V or ±15V models, respectively) by applying the load across the
+Output (pin 6) and –Output (pin 8), with either output grounded. The Common
(pins 5 and 7) should be left open (unconnected). Minimum 20% loading is
recommended under these conditions.
Filtering and Noise Reduction
All BST 3 Watt DC/DC Converters achieve their rated ripple and noise specica-
tions without the use of external input/output capacitors. In critical applications,
input/output ripple and noise may be further reduced by installing electrolytic
capacitors across the input terminals and/or low-ESR tantalum or electrolytic
capacitors across the output terminals. Output capacitors should be con-
nected between their respective output pin (pins 6 and 8) and Common (pins 5
and 7) as shown in Figure 2. The caps should be located as close to the power
converters as possible. Typical values are listed in the tables below. In many
applications, using values greater than those listed will yield better results.
To Reduce Input Ripple
"D5" Models
47μF, 15V
"D12" Models
10μF, 35V
"D48" Models
4.7μF, 100V
To Reduce Output Ripple
±5V Outputs
47μF, 10V, Low ESR
±12/15V Outputs
22μF, 20V, Low ESR
PAR
TECHNICAL NOTES
Dual Output BST Models
Low-Cost, High Reliability 3 Watt, DC/DC Converters
www.murata-ps.com
email: sales@murata-ps.com
21 Sep 2009
MDC_BST 3W Models.A03 Page 3 of 4
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