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IC manufacturers Ablic

IC manufacturers (84)

Ablic S-19914A

AUTOMOTIVE,125°C OPERATION, 36 V INPUT, 1 A, LOW EMI, SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR

Overview

TopologyBuck Converter
Input voltage4-36 V
Switching frequency1980-2420 kHz
Output 112 V / 1 A
IC revision1.2

Description

The S-19914/19915 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%. It has a built-in spread spectrum clock generation circuit capable of reducing conductive noise and emission noise during PWM operation.As suitable packages for high-density mounting,such as small-sized HSNT-8(2030), are adopted, this IC contributes to miniaturization of electronic equipment. PWM control (S-19914 Series) or PWM / PFM switching control (S-19915 Series) can be selected as an option.Since the S-19915 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-19914/19915 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 theIC and coils from excessive load current as well as a thermal shutdown circuit which prevents damage from heat generation. ABLIC Inc.offers FIT rate calculated based on actual customer usage conditions in order to support customer functional safety design. For more information regarding our FIT rate calculation, contact our sales representatives.

Features

  • Input voltage: 4.0 V to 36.0 V
  • Output voltage (externally set): 2.5 V to 12.0 V
  • Output current: 1 A
  • FB pin voltage accuracy: ±1.5%
  • Efficiency: 91%
  • Oscillation frequency: 2.2 MHz typ.
  • Spread spectrum clock generation function:FSSS = +6% typ. (Diffusion rate)
  • Overcurrent protection function: 1.85 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 +125°C
  • Lead-free (Sn 100%), halogen-free
  • AEC-Q100 in process11. Contact our sales representatives for details.

Typical applications

  • Constant-voltage power supply for electrical application for vehicle interior, Constant-voltage power supply for industrial equipment, Constant-voltage power supply for home electric appliance.
  • For automotive use(engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.).
  • Camera module

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Mount Samples
74438356022HTSPEC
9 files WE-MAPI SMT Power Inductor 2.2 4.5 5.6 28 32.2 30 SMT
74438356033HTSPEC
9 files WE-MAPI SMT Power Inductor 3.3 3.6 4.8 45 51.8 25.5 SMT
74438356047HTSPEC
9 files WE-MAPI SMT Power Inductor 4.7 3 3.7 65 74.8 18 SMT
Order Code Data­sheet Simu­lation
74438356022HTSPEC
74438356033HTSPEC
74438356047HTSPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Mount Samples