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PDF S-1155 Datasheet ( Hoja de datos )

Número de pieza S-1155
Descripción HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Fabricantes Seiko Instruments 
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S-1155 datasheet

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S-1155 pdf
Rev.1.1_00
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1155 Series
„ Pin Configuration
SOT-89-5
www.datasheet4u.comTop view
54
12 3
Figure 2
Table 2
Pin No.
Symbol
Description
1 ON/OFF Shutdown pin
2
VSS
GND pin
3
NC*1
No connection
4 VIN Input voltage pin
5
VOUT
Output voltage pin
*1. The NC pin is electrically open.
The NC pin can be connected to VIN or VSS.
Seiko Instruments Inc.
5

5 Page

S-1155 arduino
Rev.1.1_00
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1155 Series
„ Explanation of Terms
1. Low dropout voltage regulator
www.datasheeTth4uis.cIoCm’s voltage regulator has the low dropout voltage due to its built-in transistor with low on-resistance.
2. Output voltage (VOUT)
The accuracy of the output voltage is ensured at ±1.0% or ±15 mV*2 under the specified conditions of fixed input
voltage*1, fixed output current, and fixed temperature.
*1. Differs depending on the product.
*2. When VOUT < 1.5 V : ±15 mV, When 1.5 V VOUT : ±1.0%
Caution
If the above conditions change, the output voltage value may vary and exceed the accuracy
range of the output voltage. See “„ Electrical Characteristics” and “„ Characteristics (Typical
Data)” for details.
3. Line regulation  VOUT1 
 VIN VOUT
Indicates the dependency of the output voltage against the input voltage. That is, the value shows how much the
output voltage changes due to a change in the input voltage after fixing output current constant.
4. Load regulation (VOUT2)
Indicates the dependency of the output voltage against the output current. That is, the value shows how much the
output voltage changes due to a change in the output current after fixing output current constant.
5. Dropout voltage (Vdrop)
Indicates the difference between the output voltage and the input voltage VIN1, which is the input voltage (VIN) when;
decreasing input voltage VIN gradually until the output voltage has dropped to the value of 98% of output voltage
VOUT3, which is at VIN = VOUT(S) + 1.0 V or 5.5 V.
Vdrop = VIN1 (VOUT3 × 0.98)
Seiko Instruments Inc.
11

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