ISL91212BR5771

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Quad Output Power Management IC

Product Status: Mass Production

OVERVIEW

The ISL91212AR5770 is a 4-phase, three output programmable Power Management IC (PMIC) and the ISL91212BR5771, ISL91212BR5769, ISL91212BR5775, and ISL91212BR5772 are 4-phase, four output programmable PMICs. 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. They feature four buck controllers and can reconfigure their power stages to these controllers. This flexibility allows seamless design-in for a wide range of applications requiring high output power and small solution size.

These ISL91212 PMICs 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. These PMICs deliver highly robust power solutions by using a controller based on Intersil’s proprietary R5 Technology, which provides tight output accuracy and load regulation, ultra-fast transient response, seamless DCM/CCM transitions, and require no external compensation.

In addition to the standard interrupt, chip enable, and watchdog reset functions, these ISL91212 PMICs feature three MPIOs and two GPIOs capable of supporting I2 C communication and various other pin mode functions.

KEY FEATURES

  • Triple output 2+1+1 phases (ISL91212AR5770) or quad output single phase (ISL91212BR5771, ISL91212BR5769, ISL91212BR5775, and ISL91212BR5772)
  • 2.5V to 5.5V supply voltage
  • 5A per phase output current capability
  • Small solution size (7x10mm2 for four phase design)
  • High efficiency (94.7% for 3.8VIN/1.8VOUT)
  • Low IQ in low power mode
  • Patented control scheme reduces output capacitor and supports fast load transient (such as 50A/μs/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
  • 2.551x3.67mm 35 ball WLCSP with 0.5mm pin pitch

PARAMETRICS

Parameters
ISL91212BR5771
Basic Information
Production Status
Mass Production
# of Outputs
4
Topology [Rail 1]
Buck
Input Voltage Min (V) [Rail 1]
2.5
Input Voltage Max (V) [Rail 1]
5.5
Output Voltage Min (V) [Rail 1]
0
Output Voltage Max (V) [Rail 1]
1.5
Output Current Max (A) [Rail 1]
5
IQ [Rail 1]
1 µA
Switching Freq. (max) (MHz)
4
Switching Freq. (min) (MHz)
4
Qualification Level
Standard
Peak Efficiency (%)
94.7
POR
Yes
SYNCH Capability
No
Control Type
Current Mode
Switching Frequency Range (MHz)
4 MHz
Can Sample
YES
Temperature Range
-40 to +85

Design Resources and Tools

Selection Tool

 PowerCompass Online Tool

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 PowerNavigator Software

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Cross Reference

Intersil Cross Reference

Cross-reference based on data from industry sources. Support for the online tool has been discontinued, but the data is still available.

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Knowledge Base

Switching Regulators FAQs

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FAQs

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This webinar introduces three buck-boost regulators in QFN packages, ISL91127IR, ISL91107IR, ISL9120IR, for battery-powered portable devices.
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This webinar introduces the ISL85003 and ISL85003A synchronous buck (step-down) regulators with integrated high-side and low-side FETs.
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Find out how the highly efficient, compact 12V synchronous buck regulator family can meet your power requirements for 12V rails.
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This webinar introduces the ISL85003 and ISL85003A synchronous buck (step-down) regulators with integrated high-side and low-side FETs.
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