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IS66066

Switching RegulatorAvailable

High power density, high-frequency synchronous step-down converter, capable of supporting a maximum load of 12A

IS66066

Description

IS66066 is a high-power-density, high-frequency, fully integrated synchronous step-down converter. This device is packaged in a 3mm x 4mm 21-pin QFN format and can support a continuous output current of up to 12A. It has a high efficiency within the output load current range, and exhibits excellent load regulation and linear regulation over a wide input voltage range. The IS66066 adopts an internal compensation method and uses the unique TCOT™ control mode to provide rapid transient response and simplify the loop compensation network. The switching frequency of this device can be selected among 600kHz, 800kHz and 1MHz. The soft start time can be set by an external capacitor. An open-drain output signal named PGOOD is provided internally, which is used to indicate the working status of the chip.

Parameters

Vin Min (V)
4.8
Vin Max (V)
16
Iout (A)
12
Vout Min (V)
0.6
Vout Max (V)
5.5
Switching Frequency
600kHz/800kHz/1MHz
Operating Temperature Range (°C)
-40 ~ 125
Package
QFN 3x4
Control Mode
COT

Features

  • Featuring TCOT™ control mode for fast transient response.
  • 2.4V Minimum Start-up Input Voltage VIN (with External VCC)
  • Continuous output current of 12A
  • Remote Differential Detection
  • 1μA Typical Quiescent Current (IQ)
  • 90% Maximum Duty Cycle
  • 0.5% voltage accuracy load regulation and line regulation
  • Efficiency can reach over 90% within the load range.
  • Under light load conditions, either Skip mode or CCM mode can be selected.
  • Soft start time programmable
  • Optional switching frequencies of 600kHz, 800kHz, and 1MHz.
  • Overcurrent Protection (OCP), Negative Overcurrent Protection (NOCP), Overvoltage Protection (OVP), Undervoltage Lockout (UVLO), and Overtemperature Protection (OTP)

Typical Application Circuit

IS66066 - Typical Application Circuit