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Product Detailed Parameters
- Description：IC REG DL BUCK/LINEAR 16MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Topology：Step-Down (Buck) (1), Linear (LDO) (1)
- Number of Outputs：2
- Frequency - Switching：-
- Voltage/Current - Output 1：5V, 100mA
- Voltage/Current - Output 2：3.3V, 250mA
- Voltage/Current - Output 3：-
- w/LED Driver：No
- w/Supervisor：No
- w/Sequencer：Yes
- Voltage - Supply：5.5V ~ 38V
- Operating Temperature：-40°C ~ 150°C
- Mounting Type：Surface Mount
- Package / Case：16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Supplier Device Package：16-MSOP-EP
- Grade：-
- Qualification：-
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Overview
The LTC3256IMSE#PBF is an automotive-grade dual-output step-down charge pump with a post-regulator LDO and watchdog timer. It operates from a wide input voltage range of 5.5V to 38V, designed for ISO 26262 systems. The device provides up to 350mA output current from a 12V battery, offering lower power dissipation compared to ideal linear regulators. Output voltages are configurable at 5V @ 100mA and 3.3V @ 250mA.
Feature Summary
- Engineered for high diagnostic coverage in ISO 26262 automotive safety systems
- Integrates dual step-down charge pumps with a post-regulator LDO
- Includes an integrated watchdog timer for system monitoring
- Operates across a wide 5.5V to 38V input voltage range
Applications
- Automotive electronic control units requiring ISO 26262 compliance
- Systems powered by 12V batteries needing efficient voltage regulation
- Applications requiring combined charge pump and LDO regulation
Procurement Notes
Verify the specific suffix (IMSE#PBF) against official Analog Devices documentation to confirm package type and temperature grade. Ensure the component meets required automotive reliability standards for your target application. Cross-reference datasheet revisions to confirm pinout and electrical characteristics match your design requirements before procurement.
Selection Notes
Select this component when designing for automotive environments requiring robust diagnostic features and wide input voltage tolerance. It is suitable for applications where power efficiency is critical compared to linear regulators. Consider the dual-output capability and integrated watchdog if system safety and space constraints are primary design drivers.
Part Context
This part belongs to the LTC3256 family of power management ICs specifically tailored for automotive use. It combines charge pump technology with LDO regulation to provide stable outputs from varying battery voltages. The inclusion of safety features like a watchdog timer distinguishes it from standard consumer-grade power controllers.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Generic replacements may lack the specific ISO 26262 diagnostic coverage or automotive qualification required for this application.
