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IC-Hersteller Sky Works

IC-Hersteller (84)

Sky Works SKY87201-11

Low Noise, Fast Transient 600 mA Step-Down Converter with Output Auto Discharge

Details

TopologieAbwärtswandler
Eingangsspannung2.7-5.5 V
Ausgang 13.3 V

Beschreibung

The SKY87201-11 is a 2 MHz step-down converter with an input voltage range of 2.7 V to 5.5 V and output voltage as low as 0.6 V. It is optimized to react quickly to a load variation. The SKY87201-11 incorporates a unique low-noise architecture that reduces ripple and spectral noise.

The SKY87201-11 is programmable with external feedback resistors. It can deliver 600 mA of load current while maintaining a low 37 μA no-load quiescent current. The 2 MHz switching frequency minimizes the size of external components while keeping switching losses low.

The SKY87201-11 is designed to maintain high efficiency throughout the operating range, which is critical for portable applications.

The device has an output auto discharge feature. This enables thedevice to quickly discharge the output when the device is disabled (VEN = VIN to 0 V).

The SKY87201-11 is provided in a small, 8-pin, 2 x 2 mm Thin Dual Flat No-Lead (STDFN) package.

A typical application circuit diagram is provided in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignment and functional pin descriptions are provided in Table 1. A functional block diagram is shown in Figure 3.

Eigenschaften

  • Output auto discharge when disabled
  • VIN range: 2.7 V to 5.5 V
  • Low-noise, light-load mode
  • Low ripple power management mode
  • Output voltage adjustable from 0.6 V to VIN
  • No load quiescent current: 37 μA
  • Up to 98% efficiency
  • Maximum output current: 600 mA
  • Switching Frequency: 2 MHz
  • Soft start: 150 μs
  • Fast load transient
  • Over-temperature protection
  • Current limit protection
  • 100% duty cycle low-dropout operation
  • Shutdown current: <1 μA
  • Available in an STDFN (8-pin, 2 x 2 mm) package (MSL1, 260 C per JEDEC J-STD-020)

Typische Anwendungen

  • USB devices
  • Cellular phones
  • Digital cameras
  • Handheld instruments
  • Microprocessor, DSP Core, I/O power
  • PDAs and handheld computers

Weiterführende Informationen

Artikeldaten