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RT7248HGSP Equivalent & Substitute Parts
Part Overview
The RT7248HGSP is a buck switching regulator IC from Richtek USA Inc., designed for positive adjustable step-down voltage regulation with a 2A output current capability. This component operates across an input voltage range of 4.5V to 18V and delivers adjustable output voltage from 0.923V to 15V. The device is housed in an 8-SOIC package with exposed pad and features a 340kHz switching frequency with integrated synchronous rectification.
The RT7248HGSP has been discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Richtek USA Inc. |
| Category | Power Management (PMIC) |
| Function | Step-Down (Buck) |
| Output Configuration | Positive Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min/Max) | 4.5V / 18V |
| Voltage - Output (Min/Max) | 0.923V / 15V |
| Current - Output | 2A |
| Frequency - Switching | 340kHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitution eligibility for the RT7248HGSP is determined by the following critical parameters:
- Input voltage range: 4.5V to 18V
- Output current capability: 2A
- Package type: 8-SOIC with exposed pad
- Switching frequency: 340kHz
- Synchronous rectification: Required
- Operating temperature range: -40°C to 85°C
- Output voltage adjustability: Positive adjustable configuration
- Compliance standards: ROHS3, REACH Unaffected
The RT7247AHGSP qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The minimum output voltage specification differs (0.8V versus 0.923V), which represents an expanded output voltage range capability and does not restrict substitution in applications requiring the original 0.923V minimum.
Parameter Comparison
| Parameter | RT7248HGSP | RT7247AHGSP |
|---|---|---|
| Manufacturer | Richtek USA Inc. | Richtek USA Inc. |
| Category | Power Management (PMIC) | Power Management (PMIC) |
| Function | Step-Down | Step-Down |
| Output Configuration | Positive Adjustable | Positive Adjustable |
| Number of Outputs | 1 | 1 |
| Voltage - Input (Min) | 4.5V | 4.5V |
| Voltage - Input (Max) | 18V | 18V |
| Voltage - Output (Min) | 0.923V | 0.8V |
| Voltage - Output (Max) | 15V | 15V |
| Current - Output | 2A | 2A |
| Frequency - Switching | 340kHz | 340kHz |
| Synchronous Rectifier | Yes | Yes |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) Exposed Pad | 8-SOIC (0.154", 3.90mm Width) Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 3 (168 Hours) | 3 (168 Hours) |
| Product Status | Discontinued at DiGi Electronics | Active |
Engineering Selection Recommendations
The RT7247AHGSP is the qualified substitute for the discontinued RT7248HGSP. Both devices maintain identical electrical specifications across input voltage range, output current, switching frequency, and thermal operating range. The package footprint and mounting characteristics are identical, enabling direct PCB-level replacement without layout modification.
The RT7247AHGSP carries active product status with confirmed inventory availability (17,600 pcs), whereas the RT7248HGSP is discontinued. Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for equivalent substitution.
The expanded minimum output voltage range of the RT7247AHGSP (0.8V versus 0.923V) provides additional design flexibility without compromising compatibility in applications designed for the original part.
Frequently Asked Questions (FAQ)
Q: Can the RT7247AHGSP be used as a direct replacement for the RT7248HGSP?
A: Yes. Both devices share identical input voltage range (4.5V–18V), output current (2A), switching frequency (340kHz), package type (8-SOIC with exposed pad), and operating temperature range (-40°C to 85°C). The physical footprint and pin configuration are identical, enabling direct substitution without PCB redesign.
Q: What is the difference in minimum output voltage between these parts?
A: The RT7248HGSP specifies a minimum output voltage of 0.923V, while the RT7247AHGSP specifies 0.8V. This represents an expanded output voltage range on the substitute part. Applications requiring 0.923V or higher output voltage are fully compatible with the RT7247AHGSP.
Q: Are there packaging differences between these parts?
A: The RT7248HGSP is supplied in Digi-Reel® packaging. The RT7247AHGSP is available in both Cut Tape (CT) and Digi-Reel® packaging options. The component itself and its 8-SOIC package dimensions are identical.
Q: Do both parts meet the same compliance standards?
A: Yes. Both the RT7248HGSP and RT7247AHGSP are ROHS3 compliant and REACH Unaffected. Both carry MSL rating 3 (168 Hours), meeting identical moisture sensitivity requirements.
Q: Why is the RT7248HGSP discontinued?
A: The RT7248HGSP has been discontinued at DiGi Electronics. The RT7247AHGSP remains in active production and is the recommended substitute for ongoing component sourcing.
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