KA7818AETU

Description：IC REG LINEAR 18V 1A TO220-3
Series：-
Mfr：onsemi
Package：Tube

SKU:d70b656a7ec7 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: onsemi

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Product introduction

KA7818AETU is listed in the Voltage Regulators - Linear, Low Drop Out (LDO) Regulators range at ChipApex. The manufacturer field lists onsemi. Its product description is IC REG LINEAR 18V 1A TO220-3. Review the specifications below when checking this part for your BOM.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators specifications for KA7818AETU

Description：IC REG LINEAR 18V 1A TO220-3
Series：-
Mfr：onsemi
Package：Tube
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：35V
Voltage - Output (Min/Fixed)：18V
Voltage - Output (Max)：-
Voltage Dropout (Max)：2V @ 1A (Typ)
Current - Output：1A
Current - Quiescent (Iq)：6 mA
Current - Supply (Max)：-
PSRR：57dB (120Hz)
Control Features：-
Protection Features：Over Temperature, Short Circuit
Operating Temperature：0°C ~ 125°C
Mounting Type：Through Hole
Package / Case：TO-220-3
Supplier Device Package：TO-220-3
Grade：-
Qualification：-

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators datasheet and documents for KA7818AETU

KA7818AETU

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The KA7818AETU is a three-terminal positive linear voltage regulator from the KA78XXAE series, manufactured by onsemi. It provides a fixed output voltage of 18 V with a tolerance of ±2% at 25°C and supports an output current up to 1 A. The device operates within a temperature range of 0°C to +125°C and is housed in a TO-220 package. Key electrical characteristics include a maximum input voltage of 35 V, line regulation of 15 mV (max), load regulation of 360 mV (max), and ripple rejection of 53 dB (min).

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

Integrated thermal overload protection prevents damage during excessive heat conditions.
Built-in short-circuit protection limits current flow during output faults.
Output transistor safe operating area protection ensures stability under varying load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

Power supplies for electronic equipment requiring stable 18 V DC rails.
Local regulation for distribution networks in embedded systems.
Battery chargers utilizing fixed voltage regulation stages.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the exact part number suffix against the manufacturer's official ordering guide, as Fairchild Semiconductor integration may have updated nomenclature conventions. Confirm RoHS compliance status and specific packaging details directly with authorized distributors or the manufacturer before placing orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 18 V output with ±2% precision is required. Ensure the input voltage remains within the 35 V absolute maximum rating. Verify that the thermal design accommodates the junction-to-air resistance for the intended load current to maintain operation within the specified temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the KA78XXAE family of three-terminal positive regulators. It shares internal architecture with other voltages in the series but is specifically configured for 18 V output. The 'A' suffix denotes tighter voltage tolerance compared to standard variants, while the 'ETU' indicates the TO-220 through-hole package configuration.