The ISL91127 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 ISL91127 can deliver at least 2.1A 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 ISL91127 supports stand-alone applications with a fixed 3.3V or 3.5V output voltage or adjustable output voltage with an external resistor divider. Output voltages as low as 1V or as high as 5.2V are supported.
The ISL91127 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.
IC REG BCK BST 2.1A 20WLCSP
Manufacturer: Renesas Electronics America Inc
Win Source Part Number: 1316412-ISL91127IIAZ
Category: Integrated Circuits (ICs)>Power Management (PMIC)>Voltage Regulators - DC DC Switching Regulators
Packaging: Reel - TR
Standard Package: 250
Mounting: Surface Mount
Current - Output: 2.1A
Function: Step-Up/Step-Down
Topology: Buck-Boost
Frequency - Switching: 2.5MHz
Number of Outputs: 1
Output Configuration: Positive
Voltage - Input (Min): 1.8V
Voltage - Input (Max): 5.5V
Synchronous Rectifier: Yes
Supplier Device Package: 20-WLCSP (2.15x1.74)
Case / Package: 20-UFBGA, WLCSP
ECCN: EAR99
Fake Threat In the Open Market: 71
MSL Level: 1 (Unlimited)
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Other Part Number: ISL91127IIAZ-T7ACT,I
Base Product Number: ISL91127
RoHS Status: ROHS3 Compliant
High Efficiency Buck-Boost Regulator wit
High Efficiency Buck-Boost Regulator wit
High Efficiency Buck-Boost Regulator wit
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| Renesas Electronics Corporation | ODG (Origin Data Global) | Win Source Electronics | RS Components, Ltd. | DigiKey | VAST STOCK CO., LIMITED | Lingto Electronic Limited | Quarktwin Technology Ltd. | 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 | IC Switching Voltage Regulators |
| Product Number | ISL91127IIAZ-T7A | ISL91127IIAZ-T7A | 1316412-ISL91127IIAZ-T7A | 2639009 | ISL91127IIAZ-T7ATR-ND | ISL91127IIAZ-T7A | ISL91127IIAZ-T7A | ISL91127IIAZ-T7A | ISL91127IIAZ-T7A |
| Product Name | High Efficiency Buck-Boost Regulator with 4.5A Switches | Voltage Regulators - DC DC Switching Regulators | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators | Voltage Regulators | Voltage Regulators - DC DC Switching Regulators | Switching Voltage Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators |
| Configuration / Function | Buck-Boost | Buck; Boost | Buck-Boost | Buck; Boost | Buck-Boost | ||||
| Package Type | Other; QFN | Other; 20-UFBGA, WLCSP | Other; 20-UFBGA, WLCSP | Other; WLCSP-20 | Other; 20-UFBGA, WLCSP | Other; 20-UFBGA, WLCSP | |||
| Output Voltage | 1 to 5.2 volts | ||||||||
| IOUT | 2.1 amps | 2.1 amps | 2.1 amps | 2.1 amps | 2.1 amps | 2.1 amps | 2.1 amps | ||
| VIN | 1.8 to 5.5 volts | 5.5 volts | 1.8 to 5.5 volts | 1.8 to 5.5 volts |
