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.
Manufacturer: Intersil
Win Source Part Number: 777478-ISL91108IIAZ-
Packaging: Reel package
Operating Temperature Range: -40°C ~ 85°C (TA)
Package: 20-UFBGA, WLCSP
Mounting: SMD
Output Type: Adjustable
Function: Step-Up/Step-Down
Topology: Buck-Boost
Frequency - Switching: 2.6MHz
Number of Outputs: 1
Output Configuration: Positive
Synchronous Rectifier: Yes
Output Current: 3.7A (Switch)
Family Name: ISL91108
Output Voltage: 1V
Categories: Integrated Circuits (ICs)
Manufacturer Package: 20-WLCSP
Output Voltage MAX: 5.2V
Input Voltage MIN: 1.8V
Voltage Input MAX: 5.5V
Introduction Date: November 06, 2013
ECCN: EAR99
Country of Origin: Taiwan
Estimated EOL Date: 2031
Popularity: Medium
Fake Threat In the Open Market: 33 pct.
Supply and Demand Status: Limited
Buck-Boost Switching Regulator IC Positive Adjustable 1V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
Buck-Boost Switching Regulator IC Positive Adjustable 1V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
Buck-Boost Switching Regulator IC Positive Adjustable 1V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
IC REG BUCK-BST ADJ 20WLCSP
Buck-Boost Switching Regulator IC Positive Adjustable 1V 1 Output 3.7A (Switch) 20-UFBGA, WLCSP
IC REG BUCK BST ADJ 3.7A 20WCSP
IC REG BCK BST ADJ 3.7A 20WLCSP
Switching Voltage Regulators Buck-Boost Reg with 4.5A Switches, Adj
| Renesas Electronics Corporation | Win Source Electronics | DigiKey | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | Utmel Electronic Limited | 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 Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | ISL91108IIAZ-T7A | 777478-ISL91108IIAZ-T7A | ISL91108IIAZ-T7ACT-ND | ISL91108IIAZ-T7A | ISL91108IIAZ-T7A | 391-ISL91108IIAZ-T7A | ISL91108IIAZ-T7A | ISL91108IIAZ-T7A |
| Product Name | High Efficiency Buck-Boost Regulator with 4.2A Switches | PMIC - PMIC - Voltage Regulators - DCDC Switching Regulators - ISL91108IIAZ-T7A | Voltage Regulators - DC DC Switching Regulators | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | IC REG BUCK BST ADJ 3.7A 20WCSP | 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; Tape & Reel (TR) | |||
| Output Voltage | 1 to 5.2 volts | 1 volts | 1 to 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 | 1.5 amps | 3.7 amps | |
| VIN | 1.8 to 5.5 volts | 1.8 volts | 1.8 to 5.5 volts | 1.8 to 5.5 volts |
