ISL6522IRZ Equivalent & Substitute Parts

Part Overview

The ISL6522IRZ is an active buck regulator positive output step-down DC-DC controller IC manufactured by Renesas Electronics Corporation. This 16-QFN (5x5) surface mount device functions as a transistor driver for single-output, single-phase buck topology applications with a supply voltage range of 10.8V to 13.2V and a switching frequency of 200kHz. The device is currently in active production status with full RoHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent electrical and mechanical parameters allow direct functional replacement in target applications.

Substiute Parts

ISL6522IRZ

Renesas Electronics CorporationIn Stock: 815ISL6522IRZ Datasheet

Current PartRFQ

ISL6535IRZ

Renesas Electronics CorporationIn Stock: 1993ISL6535IRZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The ISL6522IRZ qualifies for substitution with the ISL6535IRZ based on the following matched electrical and mechanical parameters:

Matched Parameters (Substitution Basis):

• Manufacturer: Renesas Electronics Corporation
• Category: Power Management (PMIC)
• Function: Step-Down Buck Regulator Controller
• Output Type: Transistor Driver
• Topology: Buck
• Number of Outputs: 1
• Output Phases: 1
• Voltage Supply (Vcc/Vdd): 10.8V ~ 13.2V
• Switching Frequency: 200kHz
• Duty Cycle (Max): 100%
• Synchronous Rectifier: Yes
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 16-VQFN Exposed Pad
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 3 (168 Hours)
• Product Status: Active

The ISL6535IRZ maintains electrical equivalence across all critical power management parameters and operates within identical supply voltage and temperature ranges. Both devices employ the same buck topology with synchronous rectification and identical switching frequency specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the ISL6522IRZ and ISL6535IRZ are active production devices with full RoHS3 compliance and identical moisture sensitivity specifications. Selection between these parts is determined by application-specific requirements:

ISL6522IRZ is the primary selection when phase control functionality is required in the design. This device includes phase control as part of its control feature set.

ISL6535IRZ is the alternative selection when current limit functionality is required. This device includes current limit as part of its control feature set. The ISL6535IRZ is available in higher inventory quantity (1900 pcs vs. 785 pcs) and uses a smaller 16-QFN (4x4) package footprint compared to the 16-QFN (5x5) footprint of the ISL6522IRZ.

Both devices maintain identical electrical performance across voltage supply range, switching frequency, duty cycle, and operating temperature specifications. PCB layout considerations must account for the different package dimensions when transitioning between these parts.

Frequently Asked Questions (FAQ)

Q: Can ISL6535IRZ directly replace ISL6522IRZ in existing designs?

A: Direct replacement is possible when the application does not require phase control functionality. The ISL6535IRZ includes current limit control instead of phase control. Both devices share identical electrical specifications for supply voltage, switching frequency, duty cycle, and operating temperature. PCB layout must accommodate the different package dimensions: ISL6522IRZ uses 16-QFN (5x5) while ISL6535IRZ uses 16-QFN (4x4).

Q: What are the key differences between these substitute parts?

A: The primary differences are control features and package dimensions. ISL6522IRZ includes phase control; ISL6535IRZ includes current limit. ISL6522IRZ uses a 5x5mm QFN package; ISL6535IRZ uses a 4x4mm QFN package. Both devices are supplied in different packaging formats: ISL6522IRZ in trays and ISL6535IRZ in tubes.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both ISL6522IRZ and ISL6535IRZ operate across the identical temperature range of -40°C to 85°C (TA).

Q: Do both parts require the same supply voltage?

A: Yes. Both devices operate with a supply voltage range of 10.8V to 13.2V (Vcc/Vdd).

Q: What is the switching frequency for both parts?

A: Both ISL6522IRZ and ISL6535IRZ operate at a switching frequency of 200kHz with a maximum duty cycle of 100%.

Q: Are both parts RoHS compliant?

A: Yes. Both ISL6522IRZ and ISL6535IRZ are ROHS3 compliant with identical moisture sensitivity level (MSL) rating of 3 (168 Hours).