ISL91301B

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Quad Output Power Management IC

OVERVIEW

The ISL91301A is a 4-phase, three output programmable Power Management IC (PMIC) and the ISL91301B is a 4-phase, four output programmable PMIC. They are optimized with highly efficient, synchronous buck converters capable of multiphase and single-phase operations. The devices can deliver 4A per phase continuous output current for 2.8V to 5.5V supply voltages or 3A per phase current for wider 2.5V to 5.5V supply voltages. 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.

The ISL91301A and ISL91301B 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 ISL91301A and ISL91301B deliver a highly robust power solution by featuring a controller based on the Renesas proprietary R5 Technology. The controller 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, the ISL91301A and ISL91301B also feature four MPIOs and two GPIOs capable of supporting SPI, I2 C communication protocol, and various other pin mode functions.

KEY FEATURES

  • Triple output 2+1+1 phases (ISL91301A) or quad output single phase (ISL91301B)
  • 4A per phase for the 2.8V to 5.5V supply voltage, VIN_SEL = AVIN
  • 3A per phase for the 2.5V to 5.5V supply voltage, VIN_SEL = GND
  • Small solution size (6x8mm2 for 4-phase design)
  • High efficiency (93% for 3.8VIN/1.8VOUT)
  • Low IQ in low power mode
  • ±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
  • 2.570mmx2.919mm 42 ball WLCSP with 0.4mm pitch

PARAMETRICS

Parameters
ISL91301B
Basic Information
Production Status
Mass Production
Topology
Buck
# of Outputs
4
Input Voltage Min (V)
2.5
Input Voltage Max (V)
5.5
Output Voltage Min (V)
0.3
Output Voltage Max (V)
2
Output Current Max (A)
4
IQ
1 µA
Qualification Level
Standard
Peak Efficiency (%)
93
POR
Yes
SYNCH Capability
No
Control Type
Current Mode
Switching Frequency Range (MHz)
4 MHz
Temperature Range
-40 to +85

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