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概览

描述

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 can 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 a 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 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.

特性

  • Triple output 2+1+1 phases (ISL91211A) or quad output single phase (ISL91211B)
  • 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
  • 551mm x 3.67mm 54-ball WLCSP with 0.4mm pin pitch

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其他 PDF 351 KB
其他 PDF 366 KB
应用说明 PDF 509 KB
应用说明 PDF 397 KB
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  1. ISL95860HRTZ-TS2778,ISL91211AIIZ-TR5926,尾缀的含义

    ... 查不到,客户如果需求如果是带尾缀的,ISL95860HRTZ-T 这种可以通用吗? 同样的还有ISL91211AIIZ-TR5926也是,不知尾缀R5926是什么含义,会影响参数吗?

    2024年10月18日
  2. ISL95860HRTZ-TS2778,ISL91211AIIZ-TR5926,尾缀的含义

    ... 查不到,客户如果需求如果是带尾缀的,ISL95860HRTZ-T 这种可以通用吗? 同样的还有ISL91211AIIZ-TR5926也是,不知尾缀R5926是什么含义,会影响参数吗?

    2024年10月18日
  3. ISL95860HRTZ-TS2778,ISL91211AIIZ-TR5926,尾缀的含义

    ... 查不到,客户如果需求如果是带尾缀的,ISL95860HRTZ-T 这种可以通用吗? 同样的还有ISL91211AIIZ-TR5926也是,不知尾缀R5926是什么含义,会影响参数吗?

    2024年10月18日