IS6605H

Switching RegulatorAvailable

16V, 6A fully integrated high-frequency synchronous buck converter with adjustable current limiting function.

IS6605H

Description

The IS6605H is a fully integrated, high-performance synchronous step-down converter. It employs the company's proprietary TCOT™ (Turbo Constant On-Time) control architecture to deliver rapid transient response and facilitate easier loop stabilization. Capable of providing a continuous 6A output current across a wide input voltage range of 4V to 16V, it offers exceptional load and line regulation performance, presenting an ultra-compact power solution for space-constrained applications. Maintaining a constant switching frequency regardless of variations in input or output voltage. The device includes a built-in 1.4ms soft-start timer and allows for extended startup periods via an external capacitor from REF to GND. Integrated with an open-drain power good (PGOOD) monitoring circuit, it features a fault latch function with a 0.7V clamp voltage. Comprehensive protection mechanisms are incorporated, including over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and over-temperature protection. The IS6605H comes in an ultra-compact package, with an optimized pin layout designed to minimize the use of standard external components.

Parameters

Vin Min (V)
4
Vin Max (V)
16
Iout (A)
6
Vout Min (V)
0.6
Vout Max (V)
5.5
Switching Frequency
660kHz/1.1MHz/2.1MHz
Operating Temperature Range (°C)
-40 ~ 125
Package
QFN 2x3
Control Mode
COT

Features

  • Utilizing the TCOT™ control mode to deliver rapid transient response.
  • Wide input voltage range
  • External bias VCC: 2.85V to 16V
  • Continuous output current of 6A
  • Low On-Resistance Integrated Power MOSFET
  • Excellent load and line regulation, voltage accuracy up to 1%
  • Efficiency can reach over 90% within the load range.
  • Under light load conditions, either Skip mode or CCM mode can be selected.
  • Active clamping of PGOOD at low level during power outage.
  • Soft start time programmable
  • Optional switching frequencies of 660kHz, 1.1MHz, 2.1MHz.
  • Overcurrent Protection (OCP), Negative Overcurrent Protection (NOCP), Overvoltage Protection (OVP), Undervoltage Lockout (UVLO), and Overtemperature Protection (OTP)

Typical Application Circuit

IS6605H - Typical Application Circuit