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Product Detailed Parameters
- Description：AUTOMOTIVE VOLTAGE REGULATORS
- Series：S-19990
- Mfr：ABLIC Inc.
- Package：Tape & Reel (TR),Cut Tape (CT),-
- Output Type：Transistor Driver
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Boost, Flyback
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：3V ~ 36V
- Frequency - Switching：400kHz
- Duty Cycle (Max)：99%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-VSSOP, 8-MSOP (0.110", 2.80mm Width) Exposed Pad
- Supplier Device Package：8-HTMSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The S-19990DA-S8T1U7 is an automotive step-up and step-down switching regulator controller manufactured by ABLIC Inc. It utilizes high withstand voltage CMOS process technology to manage power conversion in demanding environments. The device operates with a supply voltage range of 3V to 36V and supports a switching frequency of 400kHz. It features a maximum duty cycle of 99% and does not include synchronous rectification or clock synchronization capabilities.
Feature Summary
- Integrated step-up and step-down switching regulator controller functionality
- High withstand voltage CMOS process technology for automotive reliability
- Wide input supply voltage range supporting diverse power sources
Applications
- Automotive power management systems requiring buck-boost conversion
- Battery-powered applications with varying input voltage levels
- Industrial control units needing stable regulated output from fluctuating supplies
Procurement Notes
Verify the specific suffix DA against official ABLIC documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status and automotive qualification standards directly with the manufacturer or authorized distributors before integration into production designs.
Selection Notes
Select this component when a single controller must handle both step-up and step-down operations within a wide input voltage window. Ensure external components support the 400kHz switching frequency and that the application does not require synchronous rectification or external clock synchronization signals.
Part Context
This part belongs to the S-19990 series of automotive voltage regulators designed for robust performance in vehicle electronics. It complements other ABLIC linear and switching regulators by providing flexible DC-DC conversion capabilities suitable for complex power architectures in modern automotive platforms.
Replacement Considerations
Direct substitutes are not explicitly listed in public data. Evaluate alternative ABLIC S-19990 variants or comparable buck-boost controllers based on package compatibility, switching frequency, and input voltage range specifications.
