MIC94310-DYCS-TR Equivalent & Substitute Parts

Part Overview

The MIC94310-DYCS-TR is a linear voltage regulator IC from Microchip Technology's Ripple Blocker™ series, delivering a fixed 1.85V output at 200mA in a 4-WLCSP (0.88x0.88) package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The part provides positive fixed output configuration with integrated over-current and over-temperature protection, suitable for low-power applications requiring compact surface-mount solutions.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Category	Power Management (PMIC)
Output Configuration	Positive Fixed
Voltage - Output (Fixed)	1.85V
Current - Output	200mA
Voltage - Input (Max)	3.6V
Voltage Dropout (Max)	0.1V @ 200mA
Current - Quiescent (Iq)	250 µA
PSRR	85dB ~ 50dB (100Hz ~ 10MHz)
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	4-WLCSP (0.88x0.88)
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MIC94310-DYCS-TR is determined by the following critical parameters:

Primary Substitution Criteria:

Output voltage: 1.85V fixed
Output current capability: 200mA minimum
Input voltage range: Maximum 3.6V
Dropout voltage: 0.1V @ 200mA or lower
Quiescent current: 250 µA or lower
Operating temperature range: -40°C to 125°C minimum
Surface mount package with equivalent or smaller footprint
Protection features: Over-current and over-temperature protection
RoHS3 compliance and MSL 1 rating

Microchip Equivalent (Same Series): MIC94310-DYMT-TR is the direct Microchip equivalent, offering identical electrical specifications with alternative packaging (4-TMLF® 1.2x1.6 instead of 4-WLCSP). This part maintains the same Ripple Blocker™ series characteristics and is currently active in production.

Texas Instruments Alternatives: The TPS22914 and TPS22915 series from Texas Instruments function as power switch/driver alternatives. These parts operate as N-channel high-side switches with 1:1 input-to-output ratio, supporting load voltages from 1.05V to 5.5V and delivering 2A output current. The TPS22915 series includes load discharge functionality in addition to slew rate control. All variants maintain 4-DSBGA packaging, RoHS3 compliance, and MSL 1 rating with -40°C to 85°C operating temperature range.

Parameter Comparison

Parameter	MIC94310-DYCS-TR	MIC94310-DYMT-TR	TPS22914BYFPR	TPS22914BYFPT	TPS22914CYFPR	TPS22914CYFPT	TPS22915BYFPR	TPS22915BYFPT	TPS22915CYFPR	TPS22915CYFPT
Manufacturer	Microchip	Microchip	TI	TI	TI	TI	TI	TI	TI	TI
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
Output Type	Linear Regulator	Linear Regulator	Power Switch	Power Switch	Power Switch	Power Switch	Power Switch	Power Switch	Power Switch	Power Switch
Current - Output (Max)	200mA	200mA	2A	2A	2A	2A	2A	2A	2A	2A
Voltage - Load Range	1.85V (Fixed)	1.85V (Fixed)	1.05V ~ 5.5V	1.05V ~ 5.5V	1.05V ~ 5.5V	1.05V ~ 5.5V	1.05V ~ 5.5V	1.05V ~ 5.5V	1.05V ~ 5.5V	1.05V ~ 5.5V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-WLCSP (0.88x0.88)	4-TMLF® (1.2x1.6)	4-DSBGA	4-DSBGA	4-DSBGA	4-DSBGA	4-DSBGA	4-DSBGA	4-DSBGA	4-DSBGA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Replacement (Microchip Series): MIC94310-DYMT-TR is the recommended primary substitute. It maintains identical electrical performance, RoHS3 compliance, and MSL 1 rating as the obsolete MIC94310-DYCS-TR. The only difference is packaging format (4-TMLF® versus 4-WLCSP) and availability status (Active). This part is suitable for designs requiring the same linear regulator topology and 1.85V fixed output specification.

For Alternative Topology (Texas Instruments Series): The TPS22914 and TPS22915 series represent functional alternatives for applications where power switch/driver topology is acceptable. These parts support the required 1.85V output within their 1.05V to 5.5V load voltage range and deliver higher current capability (2A versus 200mA). All variants are active products with RoHS3 compliance and MSL 1 rating. Selection between TPS22914 and TPS22915 depends on load discharge requirements; TPS22915 includes load discharge functionality while TPS22914 does not.

Packaging variants (BYFPR, BYFPT, CYFPR, CYFPT) differ only in tape format and reel configuration, not electrical performance. Selection should be based on procurement and assembly process requirements.

Frequently Asked Questions (FAQ)

Q: Can MIC94310-DYMT-TR directly replace MIC94310-DYCS-TR in existing designs? A: Yes. MIC94310-DYMT-TR provides identical electrical specifications and performance. The primary difference is package footprint (4-TMLF® 1.2x1.6 versus 4-WLCSP 0.88x0.88). PCB layout modification is required to accommodate the larger package size.

Q: What is the functional difference between TPS22914 and TPS22915 series? A: Both series operate as N-channel high-side power switches with identical electrical ratings. TPS22915 includes load discharge functionality in addition to slew rate control, while TPS22914 provides slew rate control only. Selection depends on application requirements for load discharge during power-down sequences.

Q: Are the TPS22914 and TPS22915 parts suitable for 1.85V fixed output applications? A: These parts function as power switches supporting load voltages from 1.05V to 5.5V, which includes 1.85V operation. However, they differ fundamentally from the MIC94310 linear regulator topology. The TPS series requires external control logic and does not provide fixed voltage regulation. They are suitable only for applications where switching control is acceptable.

Q: What is the significance of packaging format suffixes (BYFPR, BYFPT, CYFPR, CYFPT)? A: These suffixes indicate tape and reel configuration for automated assembly. BYFPR and CYFPR denote Tape & Reel or Cut Tape formats; BYFPT and CYFPT denote Tape & Reel format. Electrical performance is identical across all variants. Selection is based on procurement and pick-and-place equipment compatibility.

Q: Do all substitute parts maintain the same operating temperature range? A: No. MIC94310-DYCS-TR and MIC94310-DYMT-TR operate from -40°C to 125°C. TPS22914 and TPS22915 series operate from -40°C to 85°C. Applications requiring operation above 85°C must use the Microchip MIC94310-DYMT-TR substitute.

Q: Are all parts RoHS3 compliant and MSL 1 rated? A: Yes. All listed parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage processes.

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