KD1084_07 Datasheet, PDF (1/22 Pages) STMicroelectronics – 5A Low drop positive voltage regulator adjustable and fixed

KD1084 series
5A Low drop positive voltage regulator adjustable and fixed
Features
■ Typical dropout 1.3V (at 5A)
■ Three terminal adjustable or fixed output
voltage 1.8V, 2.5V, 3.3V.
■ Guaranteed output current up to 5A
■ Output tolerance ±1% at 25°C and ±2% in full
temperature range for the "A" version
■ Output tolerance ±2% at 25°C and ±3% In full
temperature range internal power and thermal
limit
■ Wide operating temp. range -40°C to 125°C
■ Package available: TO-220, D²PAK, DPAK
■ Pinout compatibility with standard adjustable
VREG
Description
The KD1084 is a LOW DROP Voltage Regulator
able to provide up to 5A of Output Current.
Dropout is guaranteed at a maximum of 1.5V at
the maximum output current, decreasing at lower
loads. The KD1084 is pin to pin compatible with
he older 3-terminal adjustable regulators but has
Schematic diagram
TO-220
DPAK
D²PAK
better performances in term of drop and output
tolerance. A 2.85V output version is suitable for
SCSI-2 active termination. Unlike PNP regulators,
where a part of the output current is wasted as
quiescent current, the KD1084 quiescent current
flows into the load, so increase efficiency. Only a
10µF minimum capacitor is need for stability.
The devices are supplied in TO-220, D²PAK and
DPAK. On chip trimming allows the regulator to
reach a very tight output voltage tolerance, within
±1% at 25°C for "A" version and ±2% at 25°C for
standard version.
May 2007
Rev. 6
1/22
www.st.com
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