TCK128BG,LF Load Switch IC Equivalent & Substitute Parts

Part Overview

The TCK128BG,LF is an active Power Management (PMIC) load switch integrated circuit manufactured by Toshiba Semiconductor and Storage. This component functions as a high-side P-channel power switch with 1A output capability, designed for general-purpose load switching applications across voltage ranges of 1.0V to 5.5V. The device features load discharge and slew rate control functionality with on/off interface control.

The TCK128BG,LF is currently in active product status with 5801 units in stock. Identifying equivalent and substitute parts is necessary for supply chain continuity, design flexibility, and procurement optimization when the primary part number becomes unavailable or when alternative sourcing is required.

Substiute Parts

TCK128BG,LF

Toshiba Semiconductor and StorageIn Stock: 5830TCK128BG,LF Datasheet

Current PartRFQ

TCK127BG,LF

Toshiba Semiconductor and StorageIn Stock: 2359TCK127BG,LF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TCK128BG,LF is determined by strict parametric equivalence across the following critical criteria:

Electrical Parameters:

• Output Type: P-Channel high-side configuration
• Maximum Output Current: 1A
• Load Voltage Range: 1V ~ 5.5V
• On-state Resistance (Rds On): 343mOhm typical
• Input Control: Non-inverting on/off interface
• Integrated Features: Load discharge and slew rate control

Mechanical & Physical Parameters:

• Package Type: 4-XFBGA, CSPBGA (4-WCSPG 0.65x0.65mm)
• Mounting: Surface mount
• Thermal Range: -40°C ~ 85°C

Compliance & Quality Parameters:

• RoHS3 compliance
• Moisture Sensitivity Level 1
• Active product status
• Tape & Reel packaging format

Substitute parts must match all electrical specifications, package dimensions, and compliance certifications to ensure direct interchangeability without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

The TCK127BG,LF is a parametrically equivalent substitute for the TCK128BG,LF. Both components are manufactured by Toshiba Semiconductor and Storage and maintain identical electrical specifications, mechanical packaging, and compliance certifications.

Selection Basis:

Both parts are active products with current manufacturing status. The TCK128BG,LF maintains higher inventory availability at 5801 units compared to the TCK127BG,LF at 2300 units. Both components are ROHS3 compliant with MSL Level 1 rating, indicating equivalent environmental and regulatory compliance.

The TCK127BG,LF provides full functional and physical interchangeability for applications requiring a 1A high-side P-channel load switch with 1V to 5.5V load voltage capability. No circuit modifications, board layout changes, or firmware adjustments are required when substituting between these part numbers.

Component selection should prioritize availability and lead time requirements. When TCK128BG,LF stock is constrained, the TCK127BG,LF serves as a direct replacement without performance degradation or design rework.

Frequently Asked Questions (FAQ)

Q: Can TCK127BG,LF be used as a direct replacement for TCK128BG,LF in existing designs?

A: Yes. The TCK127BG,LF is a parametrically equivalent substitute with identical electrical specifications, output current rating (1A), load voltage range (1V-5.5V), on-state resistance (343mOhm typical), and package configuration (4-WCSPG 0.65x0.65mm). No circuit redesign or board layout modification is required.

Q: Are the package dimensions identical between TCK128BG,LF and TCK127BG,LF?

A: Yes. Both components use the 4-WCSPG (0.65x0.65mm) package format, classified as 4-XFBGA, CSPBGA. Footprint, pin pitch, and mounting requirements are identical.

Q: Do both parts meet the same compliance and environmental standards?

A: Yes. Both TCK128BG,LF and TCK127BG,LF are ROHS3 compliant with Moisture Sensitivity Level 1 (unlimited shelf life). Both are supplied in Tape & Reel packaging format and operate across the identical temperature range of -40°C to 85°C.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching output type (P-channel high-side), maximum output current (1A), load voltage range (1V-5.5V), on-state resistance (343mOhm typical), input control type (non-inverting on/off), and integrated features (load discharge and slew rate control).

Q: Is inventory availability a factor in component selection?

A: Inventory levels are informational only. TCK128BG,LF has 5801 units in stock while TCK127BG,LF has 2300 units. Both parts are active products. Selection should be based on lead time requirements and supply chain constraints rather than parametric differences.

Q: What is the difference between TCK128 and TCK127 base product numbers?

A: The base product numbers (TCK128 versus TCK127) represent different part variants within the Toshiba load switch family. Despite different base designations, the TCK127BG,LF and TCK128BG,LF variants share identical electrical specifications and package configurations, making them parametrically equivalent for substitution purposes.