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S-8338ABCA-T8T1G
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Product Detailed Parameters
- Description：IC REG CTRLR BOOST 8TSSOP
- Series：-
- Mfr：ABLIC Inc.
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Up
- Output Configuration：Positive
- Topology：Boost
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 6V
- Frequency - Switching：257.4kHz ~ 1.134MHz
- Duty Cycle (Max)：88.50%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Frequency Control
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：8-TSSOP
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Overview
The S-8338ABCA-T8T1G is a CMOS step-up switching regulator controller from the S-8338 series by ABLIC Inc. It operates within an input voltage range of 1.8 V to 6 V and utilizes pulse width modulation (PWM) control. The internal oscillation frequency is adjustable up to 1.133 MHz via an external resistor on the ROSC pin. The maximum duty ratio is fixed at 88%. The device incorporates an error amplifier, under-voltage lockout circuit, and timer latch short-circuit protection. It is housed in an 8-pin TSSOP package.
Feature Summary
- Integrates a reference voltage circuit, oscillator, error amplifier, and PWM controller for efficient step-up regulation.
- Features a low minimum operating voltage of 1.8 V suitable for portable systems.
- Includes built-in under-voltage lockout and timer latch short-circuit protection circuits.
Applications
- Power supply for LCD panels
- Portable electronic systems requiring low voltage operation
Procurement Notes
Verify the specific suffix 'ACCA' against the official datasheet to confirm pinout and electrical characteristics match the design requirements. Ensure the component is sourced from authorized distributors to guarantee authenticity. Check for any product change notifications regarding material or manufacturing process updates before finalizing procurement.
Selection Notes
Select this controller when a fixed maximum duty ratio of 88% is required rather than the adjustable ratio found in the S-8337 series. It is appropriate for designs needing an adjustable switching frequency up to 1.133 MHz. Consider the 8-pin TSSOP package constraints and the 1.8 V to 6 V input voltage range during schematic design.
Part Context
This component belongs to the S-8337/8338 series of high-frequency PWM control switching regulator controllers. The S-8338 variant is distinguished by its fixed maximum duty ratio, whereas the S-8337 allows for adjustable duty ratios via an external resistor. Both series share similar internal architectures including UVLO and short-circuit protection.
Replacement Considerations
S-8338ABEC-T8T1G
FAQ
How is the switching frequency adjusted?
The internal oscillation frequency can be set up to 1.133 MHz by connecting a resistor to the ROSC pin.
What is the maximum duty ratio for the S-8338 series?
The maximum duty ratio for the S-8338 series is fixed at 88%.
