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ST730 Datasheet

300mA 28V low-dropout voltage regulator

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ST730
Datasheet
300 mA, 28 V low-dropout voltage regulator, with 5 µA quiescent current
SOT23-5L
Maturity status link
ST730
Features
• Wide input voltage range : 2.5 V to 28 V
• Ultra-low quiescent current: typ. 5 μA at no-load, 10 μA max. across full
temperature range, 1 μA max. in shutdown
• High output voltage accuracy: ± 0.5% @ 25 °C, ± 1% across temperature range
• Output current up to 300 mA
• Fixed output voltage versions, starting from 1.2 V to 12 V with 100 mV step
• Adjustable voltage version, starting from 1.2 V to VIN - VDROP
• Stable with low ESR capacitors (0.47 µF min.)
• Thermal shutdown protection
• Current limit and SOA protection
• -40 °C to +125 °C operating temperature range
Applications
• Post regulation
• Electronic meters
• Smoke detectors / alarms
• Portable equipment
• Industrial application
Description
The ST730 is 300 mA LDO regulator, designed to be used in several medium voltage
applications.
Ultra-low quiescent current of 5 μA makes it suitable for applications permanently
connected to power supply/battery.
This feature is also useful when electronic modules remain permanently turned on.
The ST730 embeds protection functions, such as: current limit, short-circuit and
thermal shutdown. The extended input voltage range, very low drop voltage and low
quiescent current features make it suitable also for low power after-market
automotive and consumer applications.
DS13036 - Rev 1 - June 2019
For further information contact your local STMicroelectronics sales office.
www.st.com


STMicroelectronics Electronic Components Datasheet

ST730 Datasheet

300mA 28V low-dropout voltage regulator

No Preview Available !

1 Schematic diagram
Figure 1. Block diagram - Fixed version
VIN
EN
Enable
Bias
generator
GND
Bandgap
reference
Thermal
protection
Current
limit
OPA MP
Figure 2. Block diagram - Adjustable version
VIN
EN
Enable
Bias
generator
GND
Bandgap
reference
Thermal
protection
Current
limit
OPA MP
ST730
Schematic diagram
VOUT
VOUT
ADJ
DS13036 - Rev 1
page 2/23


Part Number ST730
Description 300mA 28V low-dropout voltage regulator
Maker STMicroelectronics
Total Page 23 Pages
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