S-8337ABAC-T8T1G Equivalent & Substitute Parts

Part Overview

The S-8337ABAC-T8T1G is a Boost Regulator Positive Output Step-Up DC-DC Controller IC manufactured by ABLIC Inc. in 8-TSSOP surface mount packaging. This device functions as a transistor driver for step-up (boost) topology applications with a single output phase, operating across a 1.8V to 6V supply voltage range. The part is classified as Not For New Designs, indicating its legacy status in the product lifecycle. Equivalent substitute parts are necessary for design flexibility, inventory management, and sourcing continuity when the primary part becomes unavailable or when alternative packaging formats are required.

Key Parameters

Parameter	Value
Manufacturer	ABLIC Inc.
Category	Power Management (PMIC)
Function	Step-Up (Boost)
Output Type	Transistor Driver
Output Configuration	Positive
Number of Outputs	1
Voltage - Supply (Vcc/Vdd)	1.8V ~ 6V
Duty Cycle (Max)	89%
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 (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the S-8337ABAC-T8T1G is determined by strict alignment across the following critical parameters:

Core Functional Parameters:

Boost regulator topology with positive output configuration
Transistor driver output type
Single output phase architecture
Supply voltage range: 1.8V ~ 6V
Maximum duty cycle: 89%
Operating temperature range: -40°C ~ 85°C

Physical & Compliance Parameters:

8-TSSOP surface mount package (0.173", 4.40mm width)
ROHS3 compliance
MSL Level 1 (Unlimited moisture sensitivity)

Substitute parts are grouped into two categories based on control feature availability and product status:

Category A (S-8333 Series - Active Status): Parts with Current Limit and Frequency Control features. Switching frequency range: 280kHz ~ 1.08MHz. These parts are actively manufactured and represent the recommended substitution path for new inventory sourcing.

Category B (S-8337 Series - Active Status): Parts with Current Limit, Enable, and Frequency Control features. Switching frequency range: 257.4kHz ~ 1.134MHz. These parts maintain feature parity with the original S-8337ABAC-T8T1G and are available in alternative packaging formats.

Parameter Comparison

Part Number	Manufacturer	Packaging	Product Status	Voltage Supply	Switching Frequency	Duty Cycle (Max)	Control Features	Operating Temp	Inventory (Pcs)
S-8337ABAC-T8T1G	ABLIC Inc.	Tape & Reel (TR)	Not For New Designs	1.8V ~ 6V	257.4kHz ~ 1.134MHz	89%	Current Limit, Enable, Frequency Control	-40°C ~ 85°C	18200
S-8333CBDA-T8T1U	ABLIC Inc.	Tape & Reel (TR)	Active	1.8V ~ 6V	280kHz ~ 1.08MHz	89%	Current Limit, Frequency Control	-40°C ~ 85°C	974
S-8333CCBC-T8T1U	ABLIC Inc.	Cut Tape (CT)	Active	1.8V ~ 6V	280kHz ~ 1.08MHz	89%	Current Limit, Frequency Control	-40°C ~ 85°C	728
S-8333TCDA-T8T1U	ABLIC Inc.	Tape & Reel (TR)	Active	1.8V ~ 6V	280kHz ~ 1.08MHz	89%	Current Limit, Frequency Control	-40°C ~ 85°C	1053
S-8333TCDB-T8T1U	ABLIC Inc.	Tape & Reel (TR)	Active	1.8V ~ 6V	280kHz ~ 1.08MHz	89%	Current Limit, Frequency Control	-40°C ~ 85°C	1002
S-8333TCDC-T8T1U	ABLIC Inc.	Tape & Reel (TR)	Active	1.8V ~ 6V	280kHz ~ 1.08MHz	89%	Current Limit, Frequency Control	-40°C ~ 85°C	935
S-8333TCIA-T8T1U	ABLIC Inc.	Tape & Reel (TR)	Active	1.8V ~ 6V	280kHz ~ 1.08MHz	89%	Current Limit, Frequency Control	-40°C ~ 85°C	1069
S-8333TCIB-T8T1U	ABLIC Inc.	Tape & Reel (TR)	Active	1.8V ~ 6V	280kHz ~ 1.08MHz	89%	Current Limit, Frequency Control	-40°C ~ 85°C	733
S-8333TCIC-T8T1U	ABLIC Inc.	Tape & Reel (TR)	Active	1.8V ~ 6V	280kHz ~ 1.08MHz	89%	Current Limit, Frequency Control	-40°C ~ 85°C	1059
S-8337ABIA-T8T1U	ABLIC Inc.	Cut Tape (CT)	Active	1.8V ~ 6V	257.4kHz ~ 1.134MHz	89%	Current Limit, Enable, Frequency Control	-40°C ~ 85°C	760

Engineering Selection Recommendations

For Active Production Designs: S-8337ABIA-T8T1U is the primary substitute, maintaining identical control feature set (Current Limit, Enable, Frequency Control) and switching frequency range (257.4kHz ~ 1.134MHz) as the original S-8337ABAC-T8T1G. This part is actively manufactured and available in Cut Tape packaging. Inventory availability is 760 units.

For Cost-Optimized Designs: The S-8333 series (S-8333CBDA-T8T1U, S-8333TCDA-T8T1U, S-8333TCDB-T8T1U, S-8333TCDC-T8T1U, S-8333TCIA-T8T1U, S-8333TCIB-T8T1U, S-8333TCIC-T8T1U) provides functional equivalence with reduced control features (Current Limit and Frequency Control only, without Enable function). These parts operate at 280kHz ~ 1.08MHz switching frequency and are actively manufactured with higher aggregate inventory availability (6,851 units combined). Designs that do not require the Enable control feature can utilize these alternatives.

Packaging Considerations: Tape & Reel (TR) packaging is available across both S-8333 and S-8337 series. Cut Tape (CT) packaging is available for S-8333CCBC-T8T1U and S-8337ABIA-T8T1U. All parts maintain identical 8-TSSOP physical dimensions and surface mount compatibility.

Compliance Status: All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical operating temperature specifications (-40°C ~ 85°C). All parts are actively manufactured or in active status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can S-8333 series parts directly replace S-8337ABAC-T8T1G? A: S-8333 series parts are functionally equivalent for boost regulator applications with matching supply voltage (1.8V ~ 6V), duty cycle (89%), and operating temperature range (-40°C ~ 85°C). The primary difference is the absence of the Enable control feature in S-8333 variants. If your design does not utilize the Enable pin, S-8333 parts are direct substitutes. If the Enable function is required, use S-8337ABIA-T8T1U instead.

Q: What is the difference between Tape & Reel and Cut Tape packaging? A: Both packaging formats contain identical die and electrical specifications. Tape & Reel (TR) packaging is supplied on continuous carrier tape suitable for automated assembly lines. Cut Tape (CT) packaging is supplied in shorter tape segments for manual or lower-volume assembly processes. Physical dimensions and PCB footprint requirements are identical.

Q: Are there switching frequency differences between substitute parts? A: Yes. The original S-8337ABAC-T8T1G and S-8337ABIA-T8T1U operate at 257.4kHz ~ 1.134MHz. The S-8333 series operates at 280kHz ~ 1.08MHz. Both ranges are within standard boost regulator operating specifications. Designs must account for this frequency variation in output filter and inductor selection.

Q: Which substitute part has the highest inventory availability? A: S-8333TCIA-T8T1U has the highest individual inventory at 1,069 units. Combined S-8333 series inventory totals 6,851 units. S-8337ABIA-T8T1U has 760 units available.

Q: Do all substitute parts meet the same compliance standards? A: Yes. All substitute parts are ROHS3 compliant, carry MSL Level 1 rating, and maintain identical EAR99 ECCN and HTSUS classifications. All parts are manufactured by ABLIC Inc. and meet the same regulatory requirements.

Q: What is the significance of "Not For New Designs" status on the original part? A: This designation indicates the S-8337ABAC-T8T1G is in end-of-life phase and not recommended for new product development. Active status substitutes (S-8333 and S-8337ABIA-T8T1U variants) are the appropriate choices for new designs, ensuring long-term manufacturing support and supply availability.

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