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參數(shù)資料
| 型號： | TK72135CS |
| 廠商： | TOKO INC |
| 元件分類： | 固定負(fù)電壓單路輸出標(biāo)準(zhǔn)穩(wěn)壓器 |
| 英文描述： | 3.5 V FIXED NEGATIVE REGULATOR, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 17/28頁 |
| 文件大?。?/td> | 660K |
| 代理商： | TK72135CS |
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TK721xxCS
GC3-K020B
Page 24
12-2. ESR Stability
IC does operates with 1.0uF Cout. If it is 1.0uF or larger,
the capacitor of any type can be used in all range without
considering ESR. But due to the parts are uneven, please
enlarge the capacitance as much as possible. With larger
capacity, the output noise decreases more. In addition, the
response to the load change, etc. can be improved. The IC
won’t be damaged by enlarging the capacity.
The input capacitor is necessary in case the battery
voltage drops, the power supply impedance increases, or
the distance to the power supply is far. 1 input capacitor
might be necessary for each 1 IC or for several ICs. It
depends on circuit condition. Please confirm the stability
by each circuit.
Generally, Multi layer ceramic capacitor (MLCC) has the
temperature characteristic and the voltage characteristic.
Please select parts in consideration of the voltage and the
temperature used.
Stability area graph (Vout=-2.0 ~ -9.5V)
Condition:Vin=VoutTYP-1.5V Cin=0.1F(MLCC)
Cout=1.0uF
0.01
0.1
1
10
100
0
50
100
150
Iout (mA)
ES
R
(
Ω
)
*The output can be seen as oscillated when the
overheating protection or the overcurrent protection start
operation, or the input voltage is low. In this case, please
lower the power consumption, decrease the load current
or make the input voltage higher.
Selection of Cout
Generally, a ceramic capacitor has the temperature
characteristic and the voltage characteristic. Please select
parts in consideration of the voltage and the temperature
used. TOKO recommend B characteristic type.
Stable area
Unstable area
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