ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 1.2V 1A TO252-3
- Series：-
- Mfr：TAEJIN
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：20V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.3V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252-3
- Grade：-
- Qualification：-
Download product information
Overview
The LM1117RS-1.2 is a fixed-output low dropout linear voltage regulator manufactured by TAEJIN, providing a stable 1.2V output with a maximum continuous current of 1A. It operates within an input voltage range up to 20V and maintains performance across a junction temperature range of -40°C to +125°C. The device features a typical dropout voltage of 1.2V at full load and includes internal thermal overload protection and short-circuit current limiting. It is housed in a TO-252 (DPAK) surface-mount package.
Feature Summary
- Delivers up to 1A output current with low dropout voltage characteristics
- Includes built-in thermal overload protection and current limiting circuits
- Available in compact surface-mount packages for space-constrained designs
Applications
- Active SCSI terminators
- Portable and notebook computer power supplies
- Motherboard clock supply circuits
- Disk drive power regulation
- Battery charger systems
Procurement Notes
Verify the manufacturer marking on the component body matches the specified part number before installation. Confirm that the TO-252 package orientation aligns with the schematic pinout definitions. Ensure the application circuit includes the required output capacitance to maintain stability under all operating conditions.
Selection Notes
Select this component when a fixed 1.2V rail is required with high current capability. Consider the thermal resistance limits of the TO-252 package relative to the expected ambient temperature and power dissipation. Verify that the input voltage does not exceed the absolute maximum rating of 20V during transient events.
Part Context
This device belongs to the LM1117 family of positive voltage regulators designed for battery-powered applications. The RS suffix indicates the specific TO-252 surface-mount package variant. The series is engineered to replace standard three-terminal regulators while offering improved efficiency through lower dropout voltage requirements.
Replacement Considerations
LM1117S-1.2 (SOT-223 package)
FAQ
What is the minimum output capacitance required for stability?
An output capacitor of 10µF or larger is required for output stability.
Does the device support adjustable output voltages?
No, the LM1117RS-1.2 is a fixed-output version providing only 1.2V. Adjustable versions are available as LM1117RS-ADJ.
