EL7535

Monolithic 350mA Step-Down Regulator

OVERVIEW

The EL7535 is a synchronous, integrated FET 350mA step-down regulator in a 10 Ld MSOP package. The regulator is internally compensated, which makes it possible to use just five tiny external components to form a complete DC/DC converter. The regulator 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 EL7535 features PWM mode control. The operating frequency is typically 1.4MHz. Additional features include <1µA shut-down current, short-circuit protection, and over-temperature protection.

The EL7535 is available in the 10 Ld MSOP package and is specified for operation over the full -40°C to +85°C temperature range.

KEY FEATURES

  • Extremely Small 350mA DC/DC Converter
  • Max Height 1.1mm 10 Ld MSOP Package
  • Possibly Uses Only Five Tiny External Components with Fixed Output
  • Power-On-Reset Output (POR)
  • Internally-Compensated Voltage Mode Controller
  • Up to 94% Efficiency
  • <1µA Shut-Down Current
  • Overcurrent and Over-Temperature Protection
  • Pb-free Available (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
EL7535
Basic Information
Production Status
Mass Production
Topology
Buck
# of Outputs
1
Input Voltage Min (V)
2.5
Input Voltage Max (V)
5.5
Output Voltage Min (V)
0.8
Output Voltage Max (V)
5.5
Output Current Max (A)
0.35
Switching Freq. (max) (MHz)
1.5
Switching Freq. (min) (MHz)
1.5
Max Duty Cycle (%)
See Datasheet
Qualification Level
Standard
Peak Efficiency (%)
94
POR
Yes
Control Type
Voltage Mode
Switching Frequency Range (MHz)
1.5
Temperature Range
-40 to +85

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