The ISL91108 is a highly-integrated buck-boost switching regulator that accepts input voltages either above or below the regulated output voltage. Unlike other buck-boost regulators, this regulator automatically transitions between operating modes without significant output disturbance.
This device is capable of delivering up to 2.7A of burst current (PVIN = 3V, VOUT = 3.3V), and provides excellent efficiency due to its fully synchronous 4-switch architecture. No load quiescent current of only 27.5µA also optimizes efficiency under light-load conditions. Forced PWM and/or synchronization to an external clock may also be selected for noise sensitive applications.
The ISL91108 is designed for standalone applications and supports a 3.3V fixed output voltage or variable output voltages with an external resistor divider. Output voltages as low as 1V or as high as 5.2V are supported using an external resistor divider.
The ISL91108 requires only a single inductor and very few external components. Power supply solution size is minimized by a 2.34mm x 1.72mm WLCSP and a 2.6MHz switching frequency, which further reduces the size of external components.
Buck-Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
Buck-Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
Buck-Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
Manufacturer: Intersil
Win Source Part Number: 120627-ISL91108IINZ-
Packaging: Reel - TR
Mounting: SMD (SMT)
Output Type: Fixed
Topology: Buck-Boost
Frequency - Switching: 2.6MHz
Number of Outputs: 1
Synchronous Rectifier: Yes
Output Current: 3.7A (Switch)
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 85°C (TA)
Case / Package: 20-WLCSP
Purpose: Step-Up/Step-Down
Maximum Input Voltage: 5.5V
Nominal Output Voltage (Min/Fixed): 3.3V
Minimum Input Voltage: 1.8V
Popularity: Medium
Fake Threat In the Open Market: 69 pct.
Supply and Demand Status: Balance
IC REG BCK-BST 3.3V 3.7A 20WLCSP Product overview: ISL91108IINZ-T7A from Renesas Electronics Corporation is a Voltage Regulator IC for stable power rails, DC-DC conversion, battery-powered electronics, automotive modules, and embedded power management. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include 3.3V, 3.7A. Search-friendly keywords include voltage regulator, LDO, buck converter, boost converter, power rail, 3.3V, 3.7A, Voltage Regulator IC, DC Switching Voltage Regulators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 739-ISL91108IINZ-T7A
Buck-Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
IC REG BCK-BST 3.3V 3.7A 20WLCSP
Switching Voltage Regulators Buck-Boost Reg with 4.5A Switches, Adj
IC REG BCK BST 3.3V 3.7A 20WLCSP
| Renesas Electronics Corporation | DigiKey | Win Source Electronics | ERSAELECTRONICS PTE. LTD. | Quarktwin Technology Ltd. | Shenzhen Shengyu Electronics Technology Limited | VAST STOCK CO., LIMITED | Lingto Electronic Limited | |
|---|---|---|---|---|---|---|---|---|
| Product Category | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | ISL91108IINZ-T7A | ISL91108IINZ-T7ATR-ND | 120627-ISL91108IINZ-T7A | 739-ISL91108IINZ-T7A | ISL91108IINZ-T7A | ISL91108IINZ-T7A | ISL91108IINZ-T7A | ISL91108IINZ-T7A |
| Product Name | High Efficiency Buck-Boost Regulator with 4.2A Switches | Voltage Regulators - DC DC Switching Regulators | PMIC - PMIC - Voltage Regulators - DCDC Switching Regulators - ISL91108IINZ-T7A | 3.3V 3.7A Voltage Regulator IC | Voltage Regulators - DC DC Switching Regulators | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators | Switching Voltage Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators |
| Configuration / Function | Buck-Boost | Buck-Boost | Buck-Boost | |||||
| Package Type | Other; WLCSP | Other; 20-UFBGA, WLCSP | Other; 20-WLCSP | Other; Tape & Reel (TR) | Other; 20-UFBGA, WLCSP | |||
| Output Voltage | 1 to 5.2 volts | 3.3 volts | 3.3 volts | 3.3 volts | 3.3 to ? volts | 3.3 volts | ||
| IOUT | 1.6 amps | 3.7 amps | 3.7 amps | 1.6 amps | 3.7 amps | 3.7 amps | 3.7 amps | |
| VIN | 1.8 to 5.5 volts | 1.8 to 5.5 volts | 5.5 volts | 5.5 volts | 1.8 to 5.5 volts |
