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參數(shù)資料
| 型號(hào)： | S-812C53AUA-C3H-T2 |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR |
| 中文描述： | 高工作電壓CMOS電壓穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 7/26頁(yè) |
| 文件大?。?/td> | 332K |
| 代理商： | S-812C53AUA-C3H-T2 |
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Rev.1.0
S-812C Series
HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR
Seiko Instruments Inc.
7
5. Dropout voltage (Vdrop)
This parameter indicates the difference between the input voltage (V
IN
1) and the output voltage when output
voltage falls to 98 % of V
OUT
(E) by gradually decreasing the input voltage (V
IN
).
Vdrop = V
IN
1-[V
OUT
(E) × 0.98]
6. Temperature coefficient of output voltage [
V
OUT
/(
Ta
V
OUT
)]
The output voltage lies in the shaded area in the whole operating temperature shown in figure 8 when the
temperature coefficient of the output voltage is
±
100 ppm/
°
C.
-40
25
+0.30mV/
°
C
V
OUT
[V]
V
OUT
(E) is a measured value of
output voltage at 25
°
C.
V
OUT
(E)
85
Ta [
°
C]
-0.30mV/
°
C
Figure 8 Example for the S-812C30A
Temperature change ratio for output voltage [mV/°C] is calculated by using the following equation.
[
Ta
Ta V
OUT
]
[
]
V
mV/ C
V
(S) V
V
ppm/ C
1000
OUT
OUT
OUT
=
×
÷
Description of Operation
1. Basic operation
Figure 9 shows the block diagram of the S-812C
series.
The error amplifier compares a reference voltage
V
ref
with a part of the output voltage divided by the
feedback resistors Rs and Rf, and supplies the gate
voltage to the output transistor, necessary to ensure
certain output voltage independent from change of
input voltage and temperature.
2. Output transistor
The S-812C Series uses a Pch MOS transistor as the output transistor.
The voltage at VOUT must not exceed VIN+0.3V. When the VOUT voltage becomes higher than that of VIN,
reverse current flows and may break the regulator since a parasitic diode between VOUT and VIN exists
inevitably.
Reference
voltage
VOUT
*
* : Parasitic diode
VSS
VIN
Rs
Rf
Figure 9 Block Diagram
Error amplifier
Current
source
Vref
Specified output voltage
Output voltage temperature coefficient
Temperatures change ratio for output voltage
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-812C53AUA-C3HT2G | 功能描述:低壓差穩(wěn)壓器 - LDO 5.3V 1.0uA 2.0% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| S-812C53AY-B | 功能描述:低壓差穩(wěn)壓器 - LDO 5.3V 1.0uA 2.0% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| S-812C53AY-B2-U | 功能描述:低壓差穩(wěn)壓器 - LDO 5.3V 1.0uA 2.0% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| S-812C53AY-B-G | 制造商:Seiko Instruments Inc (SII) 功能描述:IC REG LDO 5.3V 0.075A TO92-3 |
| S-812C53AY-X | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR |
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