SII Semiconductor Corporation S-8521B18MC-ATDT2G
Part Number:
- S-8521B18MC-ATDT2G
Manufacturer:
- SII Semiconductor Corporation
Ventron No:
- 3752409-S-8521B18MC-ATDT2G
Description:
- IC REG CTRLR BUCK SOT23-5
Datasheet:
- S-8521B18MC-ATDT2G
Payment:

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Part Overview
Description
The ABLICS-8520/8521 Series is a CMOS step-down switching regulator controller with PWM control (S-8520 Series) and PWM/PFM switching control (S-8521 Series). It features a reference voltage source, oscillation circuit, error amplifier, and other components.
Features
Low current consumption:
During operation:
60 μA max. (A, B types)
21 μA max. (C, D types)
100 μA max. (E, F types)
During shutdown: 0.5 μA max.
Input voltage:
2.5 V to 10 V (A, C, E types)
2.5 V to 16 V (B, D, F types)
Output voltage: Selectable between 1.5 V and 6.0 V in 0.1 V step
Duty ratio:
0% to 100% PWM control (S-8520 Series)
25% to 100% PWM/PFM switching control (S-8521 Series)
External parts: Pch power MOS FET or PNP transistor, coil, diode, and capacitor only
Oscillation frequency:
180 kHz typ. (A, B types)
60 kHz typ. (C, D types)
300 kHz typ. (E, F types)
Soft-start function:
8 ms. typ. (A, B types)
12 ms. typ. (C, D types)
4.5 ms. typ. (E, F types)
Shutdown function
Built-in overload protection circuit
Overload detection time:
4 ms. typ. (A type)
14 ms. typ. (C type)
2.6 ms. typ. (E type)
Lead-free, Sn 100%, halogen-free
Applications
Power supply units of portable devices
AC adapters
The ABLICS-8520/8521 Series is a CMOS step-down switching regulator controller with PWM control (S-8520 Series) and PWM/PFM switching control (S-8521 Series). It features a reference voltage source, oscillation circuit, error amplifier, and other components.
Features
Low current consumption:
During operation:
60 μA max. (A, B types)
21 μA max. (C, D types)
100 μA max. (E, F types)
During shutdown: 0.5 μA max.
Input voltage:
2.5 V to 10 V (A, C, E types)
2.5 V to 16 V (B, D, F types)
Output voltage: Selectable between 1.5 V and 6.0 V in 0.1 V step
Duty ratio:
0% to 100% PWM control (S-8520 Series)
25% to 100% PWM/PFM switching control (S-8521 Series)
External parts: Pch power MOS FET or PNP transistor, coil, diode, and capacitor only
Oscillation frequency:
180 kHz typ. (A, B types)
60 kHz typ. (C, D types)
300 kHz typ. (E, F types)
Soft-start function:
8 ms. typ. (A, B types)
12 ms. typ. (C, D types)
4.5 ms. typ. (E, F types)
Shutdown function
Built-in overload protection circuit
Overload detection time:
4 ms. typ. (A type)
14 ms. typ. (C type)
2.6 ms. typ. (E type)
Lead-free, Sn 100%, halogen-free
Applications
Power supply units of portable devices
AC adapters
Specifications
SII Semiconductor Corporation S-8521B18MC-ATDT2G technical specifications, attributes, parameters and parts with similar specifications to SII Semiconductor Corporation S-8521B18MC-ATDT2G.
- Mounting TypeSurface Mount
- Package / CaseSC-74A, SOT-753
- Surface MountYES
- Operating Temperature-40°C~85°C TA
- PackagingTape & Reel (TR)
- Pbfree Codeyes
- Part StatusNot For New Designs
- Moisture Sensitivity Level (MSL)1 (Unlimited)
- Number of Terminations5
- ECCN CodeEAR99
- Additional FeatureALSO OPERATES AS PFM
- TechnologyCMOS
- Terminal PositionDUAL
- Terminal FormGULL WING
- Peak Reflow Temperature (Cel)260
- Terminal Pitch0.95mm
- Reflow Temperature-Max (s)10
- JESD-30 CodeR-PDSO-G5
- FunctionStep-Down
- Number of Outputs1
- Output Voltage1.8V
- Output TypeTransistor Driver
- Input Voltage-Nom2.5V
- Analog IC - Other TypeSWITCHING CONTROLLER
- Output ConfigurationPositive
- Voltage - Supply (Vcc/Vdd)2.5V~16V
- Control FeaturesEnable
- Input Voltage (Min)2.5V
- TopologyBuck
- Output Current-Max0.05A
- Frequency - Switching180kHz
- Control TechniquePULSE WIDTH MODULATION
- Synchronous RectifierNo
- Switcher ConfigurationSINGLE
- Duty Cycle (Max)100%
- Length2.9mm
- RoHS StatusRoHS Compliant
Certification
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