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S-1167

HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR



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S-1167 pdf
Rev.2.3_00
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE
AND LOW DROPOUT CMOS VOLTAGE REGULATOR
REJECTION
S-1167
Series
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The S-1167 Series is a positive voltage regulator with ultra low current
consumption, high ripple rejection, low drop voltage and high output
voltage accuracy developed based on CMOS technology.
Although current consumption is very small with 9 µA typ., S-1167 Series
realized the 70 dB of high ripple rejection rate. Besides a 1.0 µF ceramic
capacitor is available as an input-and-output capacitor.
Moreover, dropout voltage is also small since output voltage accuracy
realizes ±1.0% of high accuracy, and the low-on-resistance transistor is
built-in. A built-in Output current protector prevents the load current from
exceeding the current capacitance of the output transistor. A shutdown
circuit ensures long battery life.
Two packages, SOT-23-5 and SNT-6A(H), are available.
Compared with the voltage regulators using the conventional CMOS
process, S-1167 Series is the most suitable for the portable equipments
with ultra low current consumption and corresponding to the small
package.
„ Features
• Output voltage :
1.5 to 5.5 V, selectable in 0.1 V steps.
• Low equivalent series resistance capacitor can be used : A ceramic capacitor of 1.0 µF or more can be used for the
output capacitor.
• Wide input voltage range :
2.0 to 6.5 V
• High-accuracy output voltage :
±1.0%
• Low dropout voltage :
• Low current consumption :
150 mV typ. (3.0 V output product, at IOUT = 100 mA)
During operation : 9 µA typ., 16 µA max.
• High peak current capacity :
• High ripple rejection :
• Built-in overcurrent protector :
During shutdown : 0.1 µA typ., 0.9 µA max.
150 mA output is possible. (at VIN VOUT(S) + 1.0 V)*1
70 dB typ. (at 1.0 kHz, VOUT = 3.0 V)
Overcurrent of output transistor can be restricted.
• Built-in shutdown circuit :
Ensures long battery life.
• Small package :
SOT-23-5, SNT-6A(H)
• 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 battery-powered devices
• Power supply for cellular phones
• Power supply for portable equipments
„ Packages
Package Name
SOT-23-5
SNT-6A(H)
Package
MP005-A
PI006-A
Drawing Code
Tape
Reel
MP005-A
MP005-A
PI006-A
PI006-A
Land
PI006-A
Seiko Instruments Inc.
1



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S-1167 pdf
ULTRA LOW CURRENT CONSUMPTION, HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1167 Series
Rev.2.3_00
„ Block Diagram
www.datasheet4u.com
VIN
*1
Over current
protector
VOUT
ON / OFF
Shutdown
circuit
+
Reference
voltage circuit
VSS
*1. Parasitic diode
Figure 1
2 Seiko Instruments Inc.



Part Number S-1167
Description HIGH RIPPLE REJECTION AND LOW DROPOUT CMOS VOLTAGE REGULATOR
Maker Seiko Instruments - Seiko Instruments
Total Page 30 Pages
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