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 Adjustable 1V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
IC REG BCK BST ADJ 3.7A 20WLCSP
Manufacturer: Renesas Electronics America Inc.
Win Source Part Number: 1190465-ISL91108IIAZ
Packaging: Tape and Reel
Mounting Style: SMD
Output Type: Adjustable
Function: Step-Up/Step-Down
Topology: Buck-Boost
Synchronous Rectifier: Yes
Output Current: 3.7A (Switch)
Categories: Integrated Circuits
Supplier Device Package: 20-WLCSP
Temperature Range - Operating: -40°C ~ 85°C
Maximum Output Voltage: 5.2V
Manufacturer Homepage: www.intersil.com/cda
Manufacturer Package: 20-UFBGA, WLCSP
Popularity: Medium
Fake Threat In the Open Market: 32 pct.
Supply and Demand Status: Limited
Manufacturer Pack Quantity: 3,000
MSL Level: 1 (Unlimited)
Min/Fixed Output Voltage: 1V
Switching Frequency: 2.6MHz
Voltage - Input (Minimum): 1.8V
Voltage - Input (Maximum): 5.5V
IC REG BUCK-BST ADJ 20WLCSP
Buck-Boost Switching Regulator IC Positive Adjustable 1V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
IC REG BCK BST ADJ 3.7A 20WLCSP
Switching Voltage Regulators Buck-Boost Reg with 4.5A Switches, Adj
| Renesas Electronics Corporation | DigiKey | ODG (Origin Data Global) | Win Source Electronics | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | Lingto Electronic Limited | VAST STOCK CO., 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 | ISL91108IIAZ-T | ISL91108IIAZ-T-ND | ISL91108IIAZ-T | 1190465-ISL91108IIAZ-T | ISL91108IIAZ-T | ISL91108IIAZ-T | ISL91108IIAZ-T | ISL91108IIAZ-T |
| Product Name | High Efficiency Buck-Boost Regulator with 4.2A Switches | Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | PMIC - PMIC - Voltage Regulators - DCDC Switching Regulators - ISL91108IIAZ-T | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | Switching Voltage Regulators |
| Configuration / Function | Buck-Boost | Buck-Boost | Buck; Boost | Buck-Boost | ||||
| Package Type | Other; WLCSP | Other; 20-UFBGA, WLCSP | Other; 20-UFBGA, WLCSP | Other; 20-UFBGA, WLCSP | Other; 20-UFBGA, WLCSP | |||
| Output Voltage | 1 to 5.2 volts | 1 to 5.2 volts | 1 volts | 5.2 volts | 1 volts | 1 to 5.2 volts | ||
| IOUT | 1.6 amps | 3.7 amps | 3.7 amps | 3.7 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 | 1.8 to 5.5 volts |
