| PartNumber | ISL6521CB | ISL6521CB-T | ISL6521CBZ |
| Description | IC REG QUAD BUCK/LNR SYNC 16SOIC | IC REG QUAD BUCK/LNR SYNC 16SOIC | Switching Controllers 4 IN 1 PWM/LINEAR CNTRLR 5V |
| Manufacturer | - | Intersil | Intersil |
| Product Category | - | PMIC - Voltage Regulators - Linear + Switching | PMIC - Voltage Regulators - Linear + Switching |
| Series | - | - | - |
| Packaging | - | Tape & Reel (TR) | Tube |
| Package Case | - | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | - | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | - | Surface Mount | Surface Mount |
| Function | - | Any Function | Any Function |
| Voltage Supply | - | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V |
| Supplier Device Package | - | * | * |
| Number of Outputs | - | 4 | 4 |
| Topology | - | Step-Down (Buck) Synchronous (1), Linear (LDO) (3) | Step-Down (Buck) Synchronous (1), Linear (LDO) (3) |
| Frequency Switching | - | 300kHz | 300kHz |
| Voltage Current Output 1 | - | Controller | Controller |
| Voltage Current Output 2 | - | Adjustable, 120mA | Adjustable, 120mA |
| Voltage Current Output 3 | - | Adjustable, 120mA | Adjustable, 120mA |
| w LED Driver | - | No | No |
| w Supervisor | - | No | No |
| w Sequencer | - | No | No |