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 3.3V 2A 20QFN
Buck-Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 2A 20-VFQFN Exposed Pad
Buck-Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 2A 20-VFQFN Exposed Pad
Buck-Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 2A 20-VFQFN Exposed Pad
Win Source Part Number: 1249817-ISL91127IRNZ
Category: Integrated Circuits (ICs)>PMIC - Voltage Regulators - DC DC Switching Regulators
Package: Tape & Reel
Standard Package: 250
Mounting: SMD (SMT)
Current - Output: 2A
Output Type: Fixed
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
Voltage - Output (Min/Fixed): 3.3V
Synchronous Rectifier: Yes
Package / Case: 20-VFQFN Exposed Pad
Supplier Device Package: 20-QFN (4x4)
Temperature Range - Operating: -40°C ~ 85°C (TA)
ECCN: EAR99
Fake Threat In the Open Market: 56 pct.
MSL Level: 3 (168 Hours)
REACH Status: REACH Unaffected
HTSUS: 8542.39.0001
Mfr: Renesas Electronics America Inc
Other Names: -ISL91127IRNZ-T7A,IS
Base Product Number: ISL91127
Buck-Boost Switching Regulator IC Positive Fixed 3.3V 1 Output 2A 20-VFQFN Exposed Pad
Switching Voltage Regulators Buck/BoostRegw adj
IC REG BUCK BST 3.3V 2A WLCSP
IC REG BCK BST 3.3V 2A 20QFN
IC REG BUCK-BOOST 3.3V 2A 20QFN
| Renesas Electronics Corporation | ODG (Origin Data Global) | DigiKey | Win Source Electronics | Quarktwin Technology Ltd. | VAST STOCK CO., LIMITED | Utmel Electronic Limited | Lingto Electronic 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 Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | ISL91127IRNZ-T7A | ISL91127IRNZ-T7A | ISL91127IRNZ-T7ACT-ND | 1249817-ISL91127IRNZ-T7A | ISL91127IRNZ-T7A | ISL91127IRNZ-T7A | 391-ISL91127IRNZ-T7A | ISL91127IRNZ-T7A | ISL91127IRNZ-T7A |
| Product Name | High Efficiency Buck-Boost Regulator with 4.5A Switches | Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators | Voltage Regulators - DC DC Switching Regulators | Switching Voltage Regulators | IC REG BUCK BST 3.3V 2A WLCSP | PMIC - 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 | |||||
| Package Type | Other; QFN | Other; 20-VFQFN Exposed Pad | Other; 20-VFQFN Exposed Pad | Other; Tape & Reel | Other; 20-VFQFN Exposed Pad | Other; QFN | |||
| Output Voltage | 1 to 5.2 volts | 3.3 volts | 3.3 volts | 3.3 to ? volts | 3.3 volts | ||||
| IOUT | 2.1 amps | 2 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 |
