The ISL91128 is a high-current, buck-boost switching regulator for systems using new battery chemistries. It uses the Renesas proprietary buck-boost algorithm to maintain voltage regulation while providing excellent efficiency and very low output voltage ripple when the input voltage is close to the output voltage. The device also includes a selectable Bypass mode for low power consumption in applications that have a Sleep or Low Power mode.
The ISL91128 is capable of delivering at least 2.2A continuous output current (VOUT = 3.3V) across a battery voltage range of 2.5V to 4.35V. This maximizes the energy utilization of advanced, single-cell Li-ion battery chemistries that have significant capacity left at voltages below the system voltage. Its fully synchronous low ON-resistance 4-switch architecture and a low quiescent current of only 30µA optimize efficiency under all load conditions.
The ISL91128 supports a broader set of programmable features that can be accessed using an I2C bus interface. With a programmable output voltage range of 1.9V to 5.0V, the ISL91128 is ideal for applications requiring dynamically changing supply voltages. A programmable slew rate can be selected to provide smooth transitions between output voltage settings.
The ISL91128 is available in a 20 bump, 0.4mm pitch WLCSP (2.15mmx1.74mm) with a 2.5MHz switching frequency, which further reduces the size of external components.
Win Source Part Number: 979615-ISL91128IINZ-
Category: Integrated Circuits (ICs)>PMIC - Voltage Regulators - DC DC Switching Regulators
Package: Tape & Reel (TR)
Standard Package: 250
Mounting: SMD (SMT)
Current - Output: 2.4A
Output Type: Adjustable
Function: Step-Up, Step-Down
Topology: Buck-Boost
Frequency - Switching: 2.5MHz
Voltage - Output (Max): 5V
Number of Outputs: 1
Output Configuration: Positive
Voltage - Input (Min): 1.8V
Voltage - Input (Max): 5.5V
Voltage - Output (Min/Fixed): 1.9V
Synchronous Rectifier: Yes
Package / Case: 20-UFBGA, WLCSP
Supplier Device Package: 20-WLCSP (2.15x1.74)
ECCN: EAR99
Fake Threat In the Open Market: 76 pct.
MSL Level: 1 (Unlimited)
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Mfr: Renesas Electronics America Inc
Base Product Number: ISL91128
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| Renesas Electronics Corporation | Win Source Electronics | DigiKey | RS Components, Ltd. | Lingto Electronic Limited | Quarktwin Technology Ltd. | VAST STOCK CO., LIMITED | Shenzhen Shengyu Electronics Technology 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 | ISL91128IINZ-T7A | 979615-ISL91128IINZ-T7A | ISL91128IINZ-T7A-ND | 2639014 | ISL91128IINZ-T7A | ISL91128IINZ-T7A | ISL91128IINZ-T7A | ISL91128IINZ-T7A |
| Product Name | High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface | Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | Voltage Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | Switching Voltage Regulators | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators |
| Configuration / Function | Buck-Boost | Buck-Boost | Buck-Boost | Buck; Boost | ||||
| Package Type | Other; WLCSP | Other; Tape & Reel (TR) | Other; 20-UFBGA, WLCSP | Other; WLCSP-20 | Other; 20-UFBGA, WLCSP | |||
| Output Voltage | 1.9 to 5 volts | 1.9 to 5 volts | 1.9 to 5 volts | 1.9 volts | ||||
| IOUT | 2.4 amps | 2.4 amps | 2.4 amps | 2.4 amps | 2.4 amps | 2.4 amps | ||
| VIN | 1.8 to 5.5 volts | 1.8 to 5.5 volts | 1.8 to 5.5 volts |
