S-8340C50AFT-T2-U Equivalent & Substitute Parts

Part Overview

The S-8340C50AFT-T2-U is a Boost Regulator Positive Output Step-Up DC-DC Controller IC manufactured by ABLIC Inc. in 8-TSSOP surface mount packaging. This component functions as a transistor driver for step-up (boost) topology power management applications with a single positive output phase. The part is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity.

Substiute Parts

S-8340C50AFT-T2-U

ABLIC Inc.In Stock: 1143S-8340C50AFT-T2-U Datasheet

Current PartRFQ

S-8340A50AFT-T2-U

ABLIC Inc.In Stock: 912S-8340A50AFT-T2-U Datasheet

Parametric EquivalentRFQ

S-8340B00AFT-T2-U

ABLIC Inc.In Stock: 978S-8340B00AFT-T2-U Datasheet

Parametric EquivalentRFQ

S-8341A50AFT-T2-U

ABLIC Inc.In Stock: 866S-8341A50AFT-T2-U Datasheet

Parametric EquivalentRFQ

S-8341B00AFT-T2-U

ABLIC Inc.In Stock: 5285S-8341B00AFT-T2-U Datasheet

Parametric EquivalentRFQ

S-8341C33AFT-T2-U

ABLIC Inc.In Stock: 816S-8341C33AFT-T2-U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S-8340C50AFT-T2-U is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Manufacturer: ABLIC Inc.
• Category: Power Management (PMIC)
• Function: Step-Up (Boost)
• Output Type: Transistor Driver
• Output Configuration: Positive
• Number of Outputs: 1
• Voltage Supply Range: 0.8V ~ 6V
• Duty Cycle (Max): 89%
• Control Features: Current Limit, Enable, Soft Start
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 8-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Variable Parameter (Allows Substitution Variance):

• Frequency - Switching: The main part operates at 300kHz. Substitute parts may operate at 30kHz or 600kHz while maintaining functional equivalence within the boost controller topology.

All identified substitute parts meet these criteria and are classified as parametric equivalents within the ABLIC Inc. S-8340/S-8341 controller series.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity classification, matching the compliance profile of the S-8340C50AFT-T2-U. All parts are classified as obsolete, indicating end-of-life status across the entire S-8340/S-8341 controller family.

Selection among substitute parts should be based on:

1. Switching Frequency Requirements: The main part operates at 300kHz. Substitutes operating at 600kHz offer higher switching frequency capability, while the 30kHz variant provides lower frequency operation. Circuit design parameters determine which frequency variant is appropriate.

2. Inventory Availability: S-8341B00AFT-T2-U maintains the highest inventory level (5270 pcs), followed by S-8340B00AFT-T2-U (909 pcs) and S-8340C50AFT-T2-U (1085 pcs).

3. Base Product Series: Parts designated S-8340 and S-8341 are functionally equivalent within the boost controller topology. Selection between series variants does not affect electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can S-8340C50AFT-T2-U be directly replaced with S-8341B00AFT-T2-U?

A: Yes. Both parts share identical electrical specifications across all critical parameters: boost topology, positive output configuration, 0.8V ~ 6V supply range, 89% maximum duty cycle, and identical control features (Current Limit, Enable, Soft Start). The primary difference is switching frequency (300kHz vs. 600kHz). Direct substitution is valid provided circuit design accommodates the higher switching frequency.

Q: What is the significance of switching frequency variation among substitute parts?

A: Switching frequency affects inductor and capacitor sizing, electromagnetic interference (EMI) characteristics, and power conversion efficiency. The 300kHz main part, 600kHz variants, and 30kHz variant represent different frequency classes within the same controller family. Selection must align with the target application's frequency requirements and component selection.

Q: Are all substitute parts in the same 8-TSSOP package?

A: Yes. All listed parts use identical 8-TSSOP (0.173", 4.40mm Width) surface mount packaging. PCB layout and footprint compatibility is maintained across all substitutes.

Q: Why are all parts classified as obsolete?

A: The S-8340 and S-8341 controller series have reached end-of-life status. Obsolete classification applies uniformly across the entire family. Existing inventory represents available stock from original manufacturing.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All parts are ROHS3 compliant, carry MSL Level 1 (Unlimited) moisture sensitivity rating, and share identical REACH and ECCN classifications (REACH Unaffected, EAR99).