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S-1170B - Seiko Instruments - Voltage Regulator

Номер произв S-1170B
Описание Voltage Regulator
Производители Seiko Instruments
логотип Seiko Instruments логотип 
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S-1170B Даташит, Описание, Даташиты
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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-1170B Даташит, Описание, Даташиты
www.DataSheet4U.com
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1170 Series
Rev.3.0_00
„ Block Diagram
*1
VIN
Overcurrent
protector
Thermal shutdown circuit
VOUT
ON/OFF
ON/OFF
circuit
+
Reference
voltage circuit
VSS
*1. Parasitic diode
Figure 1
2
DataSheet4 U .com
Seiko Instruments Inc.
--------------------------------------------

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S-1170B Даташит, Описание, Даташиты
www.DataSheet4U.com
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
Rev.3.0_00
S-1170 Series
„ Product Name Structure
The product types, output voltage, and package types for the S-1170 Series can be selected at the user’s
request. Refer to the “Product name” for the meanings of the characters in the product name and
“Product name list” for the full product names.
1. Product name
S-1170 x xx xx – xxx TF G
IC direction in tape specifications*1
Product abbreviation*2
Package abbreviation
UC: SOT-89-5
PD: 6-Pin HSON(A)
Output voltage
15 to 55
(E.g., when the output voltage is 1.5 V,
it is expressed as 15.)
Product type*3
A: ON/OFF pin negative logic
B: ON/OFF pin positive logic
*1. Refer to the taping specifications at the end of this book.
*2. Refer to the product name list.
*3. Refer to 3. Shutdown pin (ON/OFF pin) under the Operation.
DataSheet4 U .com
Seiko Instruments Inc.
3
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