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S-8353J25MC-IYKT2U

Description
Switching Voltage Regulators Step-Up SWR PWM 18.7uA Iq
Categorysemiconductor    Power management   
File Size580KB,50 Pages
ManufacturerSeiko-Instruments
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S-8353J25MC-IYKT2U Overview

Switching Voltage Regulators Step-Up SWR PWM 18.7uA Iq

S-8353J25MC-IYKT2U Parametric

Parameter NameAttribute value
Product CategorySwitching Voltage Regulators
ManufacturerSeiko-Instruments
RoHSDetails
Mounting StyleSMD/SMT
Package / CaseSOT-23-5
Output Voltage2.5 V
Output CurrentFixed
Number of Outputs1 Output
Input Voltage MAX10 V
TopologyBoost
Switching Frequency250 kHz
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 85 C
PackagingReel
Height1.1 mm
Length2.9 mm
Load Regulation60 mV
Factory Pack Quantity3000
TypeStep-Down Regulator
Width1.6 mm
Unit Weight0.000222 oz
S-8353/8354 Series
www.ablicinc.com
© ABLIC Inc., 2002-2010
STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE
BUILT-IN TRANSISTOR SWITCHING REGULATOR
Rev.3.0
_02
The S-8353/8354 Series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an
oscillation circuit, a power MOS FET, an error amplifier, a phase compensation circuit, a PWM control circuit (S-8353 Series)
and a PWM / PFM switching control circuit (S-8354 Series).
The S-8353/8354 Series can configure the step-up switching regulator with an external coil, capacitor, and diode. In
addition to the above features, the small package and low current consumption make the S-8353/8354 Series ideal for
portable equipment applications requiring high efficiency.
The S-8353 Series realizes low ripple, high efficiency, and excellent transient characteristics due to its PWM control circuit
whose duty ratio can be varied linearly from 0% to 83% (from 0% to 78% for 250 kHz models), an excellently designed error
amplifier, and phase compensation circuits.
The S-8354 Series features a PWM / PFM switching controller that can switch the operation to a PFM controller with a duty
ratio is 15% under a light load to prevent a decline in the efficiency due to the IC operating current.
Features
• Low voltage operation: Startup at 0.9 V min. (I
OUT
= 1 mA) guaranteed
• Low current consumption : During operation 18.7
A (3.3 V, 50 kHz, typ.)
During shutdown: 0.5
A (max.)
• Duty ratio : Built-in PWM / PFM switching control circuit (S-8354 Series)
15 % to 83 % (30 kHz and 50 kHz models)
15 % to 78 % (250 kHz models)
• External parts : Coil, capacitor, and diode
• Output voltage : Selectable in 0.1 V steps between 1.5 V and 6.5 V (for V
DD
/ V
OUT
separate types)
Selectable in 0.1 V steps between 2.0 V and 6.5 V (for other than V
DD
/ V
OUT
separate types)
• Output voltage accuracy :
2.4%
• Oscillation frequency : 30 kHz, 50 kHz, and 250 kHz selectable
• Soft start function : 6 ms (50 kHz, typ.)
• Lead-free, Sn 100%, halogen-free
*1
*1.
Refer to “
Product Name Structure”
for details.
Applications
• Power supplies for portable equipment such as digital cameras, electronic notebooks, and PDAs
• Power supplies for audio equipment such as portable CD / MD players
• Constant voltage power supplies for cameras, VCRs, and communication devices
• Power supplies for microcomputers
Packages
• SOT-23-3
• SOT-23-5
• SOT-89-3
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