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Overview
| Topology | Buck Converter |
| Input voltage | 5 V |
| Switching frequency | 2000-6000 kHz |
| Output 1 | 3.3 V / 3 A |
| Output 2 | 1.8 V / 3 A |
| Output 3 | 2.5 V / 3 A |
| IC revision | 1.0 |
Description
The ISL91211A is a 4-phase, three output programmable Power Management IC (PMIC) and the ISL91211B is a 4-phase, four output programmable PMIC. They are optimized with highly efficient synchronous buck converters capable of multiphase and single-phase operations that can deliver up to 5A per phase continuous output current. It features four buck controllers and has the capability to reconfigure its power stages to these controllers. This flexibility allows seamless design-in for a wide range of applications that require high output power and small solution size.ISL91211A and ISL91211B integrate low ON-resistance MOSFETs and programmable PWM frequency, allowing the use of very small external inductors and capacitors. They feature automatic Diode Emulation and Pulse Skipping modes under light-load conditions to further improve efficiency and maximize battery life. The ISL91211A and ISL91211B deliver a highly robust power solution by featuring a controller based on the Renesas proprietary R5 Technology that provides tight output accuracy and load regulation, ultra-fast transient response, seamless DCM/CCM transitions, and requires no external compensation.In addition to the standard interrupt, chip enable, and watchdog reset functions, ISL91211A and ISL91211B also feature four MPIOs and three GPIOs capable of supporting SPI, I2C communication protocol, and various other pin mode functions.
Features
- Triple output 2+1+1 phases (ISL91211A) or quad output single phase (ISL91211B)
- 2.5V to 5.5V supply voltage
- 5A per phase output current capability
- Small solution size (for four phase design)
- High efficiency (94.7% for 3.8VIN/1.8VOUT)
- Low IQ in low power mode
- Proprietary control scheme reduces output capacitor and supports fast load transient (such as 50A/µs per phase)
- ±0.7% system accuracy, remote voltage sensing
- Programmable PWM frequency from 2MHz to 6MHz
- I2C programmable output from 0.3V to 2V
- Independent Dynamic Voltage Scaling (DVS) for each output
- Soft-start and fault detection (UV, OV, OC, OT), short-circuit protection
- 2.551mmx3.67mm 54 ball WLCSP with 0.4mm pin pitch
Typical applications
- Artificial Intelligence (AI) Processors / Client/Enterprise/Data Center SSD, NAS
- Optical Transceiver Modules
- Smartphones, AR/VR Glasses, Drones
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins (Value) (pcs) | Application | PCB/Cable/Panel | Modularity | Type | Wire Section | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74437324022 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LHMI SMT Power Inductor | 2 | – | – | – | – | – | – | – | – | 4020 | -40 °C up to +125 °C | – | – | – | 4.45 | 4.06 | 1.8 | – | – | 2.2 | 4.05 | 4.45 | 8.4 | 61 | 49 | SMT | ||
| 74437324033 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LHMI SMT Power Inductor | 2 | – | – | – | – | – | – | – | – | 4020 | -40 °C up to +125 °C | – | – | – | 4.45 | 4.06 | 1.8 | – | – | 3.3 | 3.5 | 2.75 | 5.45 | 76 | 40 | SMT | ||
 | 691102710002 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-TBL Series 102 - 5.00 mm Horizontal Entry Modular | 2 | Wire Protector | PCB | Yes | Horizontal | 22 to 14 (AWG) 0.75 to 1.5 (mm²) | – | – | – | – | -40 °C up to +105 °C | – | – | – | 10 | – | 10 | – | Box | – | – | – | – | – | – | THT | |
 | 885012006004 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 10 V(DC) | – | – | – | – | – | – | 22 pF | ±5% | 10 | 0603 | -55 °C up to +125 °C | 840 | 10 GΩ | NP0 Class I | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74437324022 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | |
| 74437324033 | SPEC PCN pendingDue to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff. | |
| 691102710002 | SPEC | – |
| 885012006004 | SPEC |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins (Value) (pcs) | Application | PCB/Cable/Panel | Modularity | Type | Wire Section | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Samples |
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