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PDF S-1170 Datasheet ( Hoja de datos )

Número de pieza S-1170
Descripción Voltage Regulator
Fabricantes Seiko Instruments 
Logotipo Seiko Instruments Logotipo

Total 29 Páginas
		
S-1170 Hoja de datos, Descripción, Manual
www.DataSheet4U.com
Rev.3.0_00
HIGH RIPPLE-REJECTION LOW DROPOUT
HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1170 Series
The S-1170 Series is a positive voltage regulator
with a low dropout voltage, high output voltage
accuracy, and low current consumption developed
based on CMOS technology.
A built-in low on-resistance transistor provides a
low dropout voltage and large output current, a
built-in overcurrent protector prevents the load
current from exceeding the current capacitance of
the output transistor, and a built-in thermal
shutdown circuit prevents damage caused by the
heat. An ON/OFF circuit ensures a long battery
life. Compared with the voltage regulators using
the conventional CMOS process, a larger variety of
capacitors are available, including small ceramic
capacitors. Small SOT-89-5 and 6-Pin HSON(A)
packages realize high-density mounting.
„ Features
Output voltage:
1.5 V to 5.5 V, selectable in 0.1 V steps.
High-accuracy output voltage: ±1.0%
Low dropout voltage:
120 mV typ. (3.0 V output product, IOUT = 300 mA)
Low current consumption:
During operation: 80 µA typ., 160 µA max.
High peak current capability:
Built-in ON/OFF circuit:
During shutdown: 0.1 µA typ., 1.0 µA max.
800 mA output is possible (at VIN VOUT(S) + 1.0 V)*1
Ensures long battery life.
Low ESR capacitor can be used: A ceramic capacitor of 4.7 µF or more can be used for the output
capacitor.
High ripple rejection:
70 dB typ. (at 1.0 kHz)
Built-in overcurrent protector: Overcurrent of output transistor can be restricted.
Built-in thermal shutdown circuit: Damage caused by heat can be prevented.
Small package:
SOT-89-5, 6-Pin HSON(A)
Lead-free products
*1. Attention should be paid to the power dissipation of the package when the output current is large.
„ Applications
Power supply for DVD and CD-ROM drives
Power supply for battery-powered devices
Power supply for personal communication devices
Power supply for note PCs
„ Packages
Package Name
SOT-89-5
6-Pin HSON(A)
Package
UP005-A
PD006-A
Drawing Code
Tape
UP005-A
PD006-A
Reel
UP005-A
PD006-A
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Seiko Instruments Inc.
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S-1170 pdf
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HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.3.0_00
S-1170 Series
„ Pin Configuration
SOT-89-5
Top view
54
123
Table 2
Pin No.
1
2
3
4
5
Symbol
ON/OFF
VSS
NC*1
VIN
VOUT
Description
Shutdown pin
GND pin
No connection
Input voltage pin
Output voltage pin
*1. The NC pin is electrically open.
The NC pin can be connected to VIN and VSS.
Figure 2
6-Pin HSON(A)
Top view
654
123
Bottom view
123
*1
654
*2
*1. Connect the exposed thermal die
pad at shadowed area to the
board, and set electric potential
open or VSS.
However, do not use it as the
function of electrode.
*2. Be careful of the contact with
other wires because the pinch
lead has the same electric
potential as VSS.
Table 3
Pin No.
1
2
3
4
5
6
Symbol
VOUT*1
VOUT*1
ON/OFF
VSS
VIN*2
VIN*2
Description
Output voltage pin
Output voltage pin
Shutdown pin
GND pin
Input voltage pin
Input voltage pin
*1. Short pins 1 and 2.
*2. Short pins 5 and 6.
Figure 3
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Seiko Instruments Inc.
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S-1170 arduino
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HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.3.0_00
S-1170 Series
„ Explanation of Terms
1. Low dropout voltage regulator
The low dropout voltage regulator is a voltage regulator whose dropout voltage is low due to its built-in
low on-resistance transistor.
2. Low ESR
A capacitor whose ESR (Equivalent Series Resistance) is low. The S-1170 Series enables use of a low
ESR capacitor, such as a ceramic capacitor, for the output-side capacitor CL. A capacitor whose ESR is
0.5 or less can be used.
3. Output voltage (VOUT)
The accuracy of the output voltage is ensured at ±1.0% under the specified conditions of fixed input
voltage*1, fixed output current, and fixed temperature.
*1. Differs depending the product.
Caution If the above conditions change, the output voltage value may vary and exceed the
accuracy range of the output voltage. Please see the electrical characteristics and
attached characteristics data for details.
4.
Line
regulation

VOUT1
VIN VOUT

Indicates the dependency of the output voltage on the input voltage. That is, the values show how much
the output voltage changes due to a change in the input voltage with the output current remaining
unchanged.
5. Load regulation (VOUT2)
Indicates the dependency of the output voltage on the output current. That is, the values show how
much the output voltage changes due to a change in the output current with the input voltage remaining
unchanged.
6. Dropout voltage (Vdrop)
Indicates the difference between the input voltage VIN1, which is the input voltage (VIN) at the point where
the output voltage has fallen to 98% of the output voltage value VOUT3 after VIN was gradually decreased
from VIN = VOUT(S) + 1.0 V, and the output voltage at that point (VOUT3 × 0.98).
Vdrop = VIN1 (VOUT3 × 0.98)
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Seiko Instruments Inc.
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