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| 型號： | DFA6U48S5 |
| 英文描述： | SINGLE OUTPUT |
| 中文描述： | 單輸出 |
| 文件頁數(shù)： | 2/3頁 |
| 文件大?。?/td> | 807K |
| 代理商： | DFA6U48S5 |
2
DFA6 SERIES – SINGLE OUTPUT
DFA6 SERIES APPLICATION NOTES:
External Capacitance Requirements
No external capacitance is required for operation of the DFC6 Series.
To meet the reflected ripple requirements of the converter, an input
impedance of less than 0.35 Ohms from DC to 250KHz is required.
If a capacitive input source is farther than 1” from the converter, an
additional capacitor may be required at the input pins for proper
operation. External output capacitance is not required for operation,
however it is recommended that 1 F to 10 F of tantalum and 0.001
to 0.1 F ceramic capacitance be selected for reduced system noise.
Additional output capacitance may be added for increased filtering,
but should not exceed 400 F.
Negative Outputs
A negative output voltage may be obtained by connecting the +OUT
to circuit ground and connecting -OUT as the negative output.
NOTES
(1)
All parameters measured at Tc=25
°
C, nominal input voltage and full rated load unless otherwise
noted. Refer to the Technical Reference Section for the definition of terms, measurement circuits and
other information.
Noise is measured per Technical Reference Section. Measurement bandwidth is 0-20 MHz for peak-
peak measurements, 10 kHz to 1 MHz for RMS measurements. Output noise is measured with a 1μf
/ 35V Tantalum capacitor, 1 inch from the output pins to simulate standard PCB decoupling
capacitance. Reflected Ripple is measured with the appropriate input capacitor, and into a 10 μH
source impedance. See application notes for input capacitor requirements.
Short term stability is specified after a 30 minute warmup at full load, constant line and recording
the drift over a 24 hour period.
The input ripple rejection is specified for DC to 120 Hz ripple with a modulation amplitude of 1%
of Vin.
(2)
(3)
(4)
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