ISL97536

Monolithic 1A Step-Down Regulator with Low Quiescent Current

OVERVIEW

The ISL97536 is a synchronous, integrated FET 1A step-down regulator with internal compensation. It operates with an input voltage range from 2.5V to 6V, which accommodates supplies of 3.3V, 5V, or a Li-ion battery source. The output can be externally set from 0.8V to VIN with a resistive divider.

The ISL97536 features PWM control with a 1.4MHz typical switching frequency. The typical no load quiescent current is only 500µA. Additional features include a 100ms Power-On- Reset output, <1µA shutdown current, short-circuit protection, and over-temperature protection.

The ISL97536 is available in the 10 Ld MSOP package, making the entire converter occupy less than 0.15in2 of PCB area with components on one side only. The 10 Ld MSOP package is specified for operation over the full -40°C to +85°C temperature range.

KEY FEATURES

  • Less than 0.15in2 footprint for the complete 1A converter
  • Components on one side of PCB
  • Max height 1.1mm MSOP10
  • 100ms Power-On-Reset output (POR)
  • Internally-compensated voltage mode controller
  • Up to 95% efficiency
  • <1µA shutdown current
  • 500µA quiescent current
  • Hiccup mode overcurrent and over-temperature protection
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL97536
Basic Information
Production Status
Mass Production
Topology
Buck
# of Outputs
1
Input Voltage Min (V)
2.5
Input Voltage Max (V)
6
Output Voltage Min (V)
0.8
Output Voltage Max (V)
6
Output Current Max (A)
1
IQ
0.5 mA
Switching Freq. (max) (MHz)
1.4
Switching Freq. (min) (MHz)
1.4
Max Duty Cycle (%)
See Datasheet
Qualification Level
Standard
Peak Efficiency (%)
95
POR
Yes
BOM Total Footprint (mm2)
96.8
SYNCH Capability
No
Control Type
Voltage Mode
Switching Frequency Range (MHz)
1.4
Can Sample
YES
Temperature Range
-40 to +85

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