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Ablic S-8580AA

36V Input, 600 mA Synchronous Step-Down Switching Regulator

Overview

TopologyBuck Converter
Input voltage4-36 V
Output 112 V / 0.6 A
IC revision2.0

Description

The S-8580/8581 Series is a step-down switching regulator developed using high withstand voltage CMOS process technologies. This IC has high maximum operation voltage of 36 V and maintains high-accuracy FB pin voltage at ±1.5%.As suitable packages for high-density mounting, such as small-sized HSNT-6(2025), are adopted, this IC contributes to miniaturization of electronic equipment.PWM control (S-8580 Series) or PWM / PFM switching control (S-8581 Series) can be selected as an option.Since the S-8581 Series, which features PWM / PFM switching control, operates with PWM control under heavy load and automatically switches to PFM control under light load, it achieves high-efficiency operation in accordance with the device's status.Furthermore, our distinctive PWM / PFM switching control technology suppresses the ripple voltage to be generated in VOUT while PFM control is in operation.Since the S-8580/8581 Series has the built-in synchronous circuit, it achieves high efficiency easier compared with conventional step-down switching regulators.In addition, it has the built-in overcurrent protection circuit which protects the IC and coils from excessive load current as well as a thermal shutdown circuit which prevents damage from heat generation.

Features

  • Input voltage: 4.0 V to 36.0 V
  • Output voltage (externally set): 2.5 V to 12.0 V
  • Output current: 600 mA
  • FB pin voltage accuracy: ±1.5%
  • Efficiency: 91%
  • Oscillation frequency: 2.2 MHz typ.
  • Overcurrent protection function: 1.2 A typ. (pulse-by-pulse method)
  • Thermal shutdown function: 170°C typ. (detection temperature)
  • Short-circuit protection function: Hiccup control, Latch control
  • 100% duty cycle operation:
  • Soft-start function: 5.8 ms typ.
  • Under voltage lockout function (UVLO): 3.35 V typ. (detection voltage)
  • Input and output capacitors: Ceramic capacitor compatible
  • Operation temperature range: Ta = −40°C to +85°C
  • Lead-free (Sn 100%), halogen-free

Typical applications

  • Constant-voltage power supply for industrial equipment or home electric appliance

Products

Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
RDC typ.
(mΩ)
RDC max.
(mΩ)
Mount Samples
74404032033
STE ALT EAG CAD LTS PSP SPE IGS CADWE-LQS SMT Power Inductor 3.3 1.5 1.5 70 72 SMT
74438335047
STE ALT EAG CAD LTS PSP SPE IGS CADWE-MAPI SMT Power Inductor 4.7 1.5 2.8 30 141 162 SMT
Order Code Data­sheet
74404032033
74438335047
Samples
Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
RDC typ.
(mΩ)
RDC max.
(mΩ)
Mount Samples