Renesas Electronics Corporation High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface ISL91128IINZ-T

Description
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.
  • High Efficiency Buck-Boost Regulator with 4.5A Switches and I<sup>2</sup>C Interface - ISL91128IINZ-T - Renesas Electronics Corporation
    Renesas Electronics Corporation
  • Voltage Regulators - DC DC Switching Regulators - ISL91128IINZ-T-ND - DigiKey
    DigiKey
  • Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators - 1382373-ISL91128IINZ-T - Win Source Electronics
    Win Source Electronics
  • Voltage Regulators - DC DC Switching Regulators - ISL91128IINZ-T - Quarktwin Technology Ltd.
    Quarktwin Technology Ltd.
  • PMIC - Voltage Regulators - DC DC Switching Regulators - ISL91128IINZ-T - Lingto Electronic Limited
    Lingto Electronic Limited
Request a Quote Datasheet
Description
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.
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Suppliers

Company
Product
Description
Supplier Links
High Efficiency Buck-Boost Regulator with 4.5A Switches and I<sup>2</sup>C Interface - ISL91128IINZ-T - Renesas Electronics Corporation
Renesas Electronics Corporation
Milpitas, CA, USA
High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface
ISL91128IINZ-T
High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface ISL91128IINZ-T
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.

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.

Supplier's Site Datasheet
Voltage Regulators - DC DC Switching Regulators - ISL91128IINZ-T-ND - DigiKey
DigiKey
Thief River Falls, MN, United States
Voltage Regulators - DC DC Switching Regulators
ISL91128IINZ-T-ND
Voltage Regulators - DC DC Switching Regulators ISL91128IINZ-T-ND
Buck-Boost Switching Regulator IC Positive Adjustable 1.9V 1 Output 2.4A 20-UFBGA, WLCSP

Buck-Boost Switching Regulator IC Positive Adjustable 1.9V 1 Output 2.4A 20-UFBGA, WLCSP

Buy Now Datasheet
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators - 1382373-ISL91128IINZ-T - Win Source Electronics
Win Source Electronics
Laguna Hills, CA, United States
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators
1382373-ISL91128IINZ-T
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators 1382373-ISL91128IINZ-T
Win Source Part Number: 1382373-ISL91128IINZ -T Category: Integrated Circuits (ICs)>Power Management (PMIC)>Voltage Regulators - DC DC Switching Regulators Package: Tape & Reel (TR) Standard Package: 3,000 pcs 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 Mounting Type: Surface Mount Package / Case: 20-UFBGA, WLCSP Supplier Device Package: 20-WLCSP (2.15x1.74) ECCN: EAR99 Fake Threat In the Open Market: 61 pct. REACH Status: REACH Unaffected HTSUS: 8542.39.0001 Mfr: Renesas Electronics America Base Product Number: ISL91128 Moisture Sensitivity Level (MSL): 1 (Unlimited)

Win Source Part Number: 1382373-ISL91128IINZ-T
Category: Integrated Circuits (ICs)>Power Management (PMIC)>Voltage Regulators - DC DC Switching Regulators
Package: Tape & Reel (TR)
Standard Package: 3,000 pcs
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
Mounting Type: Surface Mount
Package / Case: 20-UFBGA, WLCSP
Supplier Device Package: 20-WLCSP (2.15x1.74)
ECCN: EAR99
Fake Threat In the Open Market: 61 pct.
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Mfr: Renesas Electronics America
Base Product Number: ISL91128
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Buy Now Datasheet
VAST STOCK CO., LIMITED
Sheung Wan, Hong Kong
Switching Voltage Regulators
ISL91128IINZ-T
Switching Voltage Regulators ISL91128IINZ-T
Switching Voltage Regulators High Current Buck Boost with I2C Voltage Adjustability

Switching Voltage Regulators High Current Buck Boost with I2C Voltage Adjustability

Buy Now Datasheet
Voltage Regulators - DC DC Switching Regulators - ISL91128IINZ-T - Quarktwin Technology Ltd.
Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Voltage Regulators - DC DC Switching Regulators
ISL91128IINZ-T
Voltage Regulators - DC DC Switching Regulators ISL91128IINZ-T
Buck-Boost Switching Regulator IC Positive Adjustable 1.9V 1 Output 2.4A 20-UFBGA, WLCSP

Buck-Boost Switching Regulator IC Positive Adjustable 1.9V 1 Output 2.4A 20-UFBGA, WLCSP

Buy Now Datasheet
Shenzhen Shengyu Electronics Technology Limited
Futian, China
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators
ISL91128IINZ-T
Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators ISL91128IINZ-T
IC REG BUCK-BST ADJ 2.4A 20WLCSP

IC REG BUCK-BST ADJ 2.4A 20WLCSP

Supplier's Site
PMIC - Voltage Regulators - DC DC Switching Regulators - ISL91128IINZ-T - Lingto Electronic Limited
Lingto Electronic Limited
Shenzhen, China
PMIC - Voltage Regulators - DC DC Switching Regulators
ISL91128IINZ-T
PMIC - Voltage Regulators - DC DC Switching Regulators ISL91128IINZ-T
IC REG BCK BST ADJ 2.4A 20WLCSP

IC REG BCK BST ADJ 2.4A 20WLCSP

Supplier's Site Datasheet

Technical Specifications

  Renesas Electronics Corporation DigiKey Win Source Electronics VAST STOCK CO., LIMITED Quarktwin Technology Ltd. Shenzhen Shengyu Electronics Technology 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
Product Number ISL91128IINZ-T ISL91128IINZ-T-ND 1382373-ISL91128IINZ-T ISL91128IINZ-T ISL91128IINZ-T ISL91128IINZ-T ISL91128IINZ-T
Product Name High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface Voltage Regulators - DC DC Switching Regulators Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators Switching Voltage Regulators Voltage Regulators - DC DC Switching Regulators Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching 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; Tape & Reel (TR) Other; 20-UFBGA, WLCSP
Output Voltage 1.9 to 5 volts 1.9 to 5 volts 1.9 to 5 volts
IOUT 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
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