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SC1104BISTRT
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 8SOIC
- Series：-
- Mfr：Semtech Corporation
- Package：Tape & Reel (TR)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4.5V ~ 7V
- Frequency - Switching：600kHz
- Duty Cycle (Max)：90%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Phase Control, Soft Start
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The SC1104BISTRT is a synchronous voltage-mode PWM controller designed for single-ended DC/DC power supply applications. It enables the implementation of high-efficiency buck regulators with minimal external components, utilizing internal level shift and drive circuitry to eliminate the need for expensive P-channel high-side switches. The device supports +5V or +12V operation and features a 1% reference voltage accuracy. It incorporates hiccup mode over-current protection and robust output drive capabilities. The component operates within an industrial temperature range and is housed in a compact SO-8 package.
Feature Summary
- Synchronous voltage-mode PWM control architecture
- Internal level shift and drive circuitry for simplified design
- Hiccup mode over-current protection mechanism
Applications
- Termination supplies
- Low cost microprocessor supplies
- Peripheral card supplies
- Industrial power supplies
- High density DC/DC conversion
Procurement Notes
Verify the specific suffix 'I' indicates the industrial temperature grade variant when sourcing. Confirm the 'STR' designation corresponds to the tape and reel packaging format required for automated assembly processes. Ensure compatibility with standard SO-8 footprint dimensions during PCB layout verification.
Selection Notes
Select this controller for designs requiring simple synchronous buck regulation without complex external gate drivers. The internal level shifter simplifies the high-side switch interface. Consider the industrial temperature rating for environments exceeding standard commercial limits. Evaluate the hiccup protection feature against system fault tolerance requirements.
Part Context
This part belongs to the SC1104 series from Semtech Corporation, which includes variants like the SC1104A and SC1104B. These devices are versatile controllers aimed at providing efficient DC/DC conversion solutions. The series is characterized by its ability to reduce component count and board space while maintaining high efficiency in various power supply topologies.
Replacement Considerations
Direct substitutes include other parts within the SC1104 family, such as the SC1104AISTRT, provided pinout and electrical characteristics align with the specific application requirements.
