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11/28
XC9235/XC9236/XC9237
Series
Output Voltage Dischage Characteristics
Rdischg
（
）
= 300Ω TYP
Discharge Time t (ms)
0
10
20
30
40
50
60
70
80
90
100
0
10
20
30
40
50
60
70
80
90
100
CL=10uF
CL=20uF
CL=50uF
OPERATIONAL DESCRIPTION (Continued)
C
L
High Speed Discharge
XC9235B(C)/ XC9236B(C)/ XC9237B(C) series can quickly discharge the electric charge at the output capacitor (C
L
) when
a low signal to the CE pin which enables a whole IC circuit put into OFF state, is inputted via the N-channel transistor
located between the L
X
pin and the V
SS
pin. When the IC is disabled, electric charge at the output capacitor (C
L
) is quickly
discharged so that it may avoid application malfunction. Discharge time of the output capacitor (C
L
) is set by the C
L
auto-discharge resistance (R) and the output capacitor (C
L
). By setting time constant of a C
L
auto-discharge resistance
value [R] and an output capacitor value (C
L
) as
(
=C x R), discharge time of the output voltage after discharge via the N
channel transistor is calculated by the following formulas.
V = V
OUT(E)
x e
–t/
, or t=
τ
ln (V
OUT(E)
/ V)
V : Output voltage after discharge
V
OUT(E)
: Output voltage
t: Discharge time,
: C x R
C= Capacitance of Output capacitor (C
L
)
R= C
L
auto-discharge resistance
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| XC9237C3ACEL | 600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XC9237C2CDER | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters |
| XC9237C2CDML | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters |
| XC9237C2CDMR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters |
| XC9237C3ACEL | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters |
| XC9237C3ACER | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters |
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