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L6984ATR Datasheet(PDF) 26 Page - STMicroelectronics

Part # L6984ATR
Description  36 V 400 mA synchronous step-down switching regulator
PDF  34 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6984ATR Datasheet(HTML) 26 Page - STMicroelectronics

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Design of the power components
L6984
26/34
DocID025378 Rev 3
In the table below some capacitor series are listed.
4.3.2
COUT specification and loop stability
Output capacitor value
A minimum output capacitor value is required for the COT loop stability:
Equation 24
Equivalent series resistor (ESR)
The maximum ESR of the output capacitor is:
Equation 25
Table 8. Output capacitors
Manufacturer
Series
Cap value (
F)
Rated voltage (V)
ESR (m
)
MURATA
GRM32
22 to 100
6.3 to 25
< 5
GRM31
10 to 47
6.3 to 25
< 5
PANASONIC
ECJ
10 to 22
6.3
< 5
EEFCD
10 to 68
6.3
15 to 55
SANYO
TPA/B/C
100 to 470
4 to 16
40 to 80
TDK
C3225
22 to 100
6.3
< 5
COUT
35
VOUT fSW
-----------------------------
ESRMAX 2.8 10
3
–
VOUT




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