Ablic S-19914B

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

• For automotive use(engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.).
• 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.
• Camera module

More information

• Datasheet
• IC product information