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 ADJ/FIX 2A 20QFN
Win Source Part Number: 1354511-ISL91127IRAZ
Category: Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - DC DC Switching Regulators
Package: Tape & Reel
Temperature Range - Operating: -40°C ~ 85°C (TA)
Fake Threat In the Open Market: 40 pct.
MSL Level: 3 (168 Hours)
Mfr: Renesas Electronics America Inc
Product Status: Active
Package / Case: 20-VFQFN Exposed Pad
Supplier Device Package: 20-QFN (4x4)
Base Product Number: ISL91127
Mounting Type: Surface Mount
HTSUS: 8542.39.0001
REACH Status: REACH Unaffected
ECCN: EAR99
Function: Step-Up, Step-Down
Output Type: Adjustable (Fixed)
Output Configuration: Positive
Voltage - Input (Max): 5.5V
Voltage - Output (Min/Fixed): 1V
Voltage - Output (Max): 5.2V
Current - Output: 2A
Topology: Buck-Boost
Number of Outputs: 1
Voltage - Input (Min): 1.8V
Frequency - Switching: 2.5MHz
Synchronous Rectifier: Yes
Buck-Boost Switching Regulator IC Positive Adjustable (Fixed) 1V 1 Output 2A 20-VFQFN Exposed Pad
IC REG BUCK-BST ADJ/1V 2A 20QFN
Buck-Boost Switching Regulator IC Positive Adjustable (Fixed) 1V 1 Output 2A 20-VFQFN Exposed Pad
IC REG BCK BST ADJ/FIX 2A 20QFN
Switching Voltage Regulators High Efficiency Buck/BoostRegulator with 4.25A Switches in a
| Renesas Electronics Corporation | ODG (Origin Data Global) | Win Source Electronics | DigiKey | 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 | ISL91127IRAZ-T | ISL91127IRAZ-T | 1354511-ISL91127IRAZ-T | ISL91127IRAZ-T-ND | ISL91127IRAZ-T | ISL91127IRAZ-T | ISL91127IRAZ-T | ISL91127IRAZ-T |
| 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 - DC DC Switching Regulators | 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; QFN | Other; 20-VFQFN Exposed Pad | Other; Tape & Reel | Other; 20-VFQFN Exposed Pad | Other; 20-VFQFN Exposed Pad | |||
| Output Voltage | 1 to 5.2 volts | 1 volts | 1 to 5.2 volts | 1 volts | 1 to 5.2 volts | |||
| IOUT | 2.1 amps | 2 amps | 2 amps | 2 amps | 2 amps | 2 amps | ||
| VIN | 1.8 to 5.5 volts | 5.5 volts | 1.8 to 5.5 volts | 1.8 to 5.5 volts |
