DIODES INC. - AP133 300mA Low Quiescent Current Fast Transient Low Dropout Linear Regulator Data Manual
Summary
The AP133 is a high-efficiency, low dropout linear regulator providing an adjustable 300mA output for battery-powered electronics. Designed for advanced low-power applications, it features ultra-low quiescent current (Iq) and excellent transient response crucial for devices like smartphones, cellular phones, and MP3 players. The comprehensive manual details its functional operation, specifying protections such as short circuit and thermal shutdown. Ideal for engineers building portable, reliable electrical systems requiring stable power in diverse environments.
Page 1 Text Content
AP133
300m A, LOW QUIESCENT CURRENT, FAST TRANSIENT
LOW DROPOUT LINEAR REGULATOR
Features Description
• 300m A Low Dropout Regulator with EN The AP133 is a 300m A, adjustable output voltage, low dropout linear regulator. The device includes pass element, error
• Very low IQ: 40µA
amplifier, band-gap, current limit and thermal shutdown circuitry.
• Wide input voltage range: 2V – 6V
The device is turned on when EN pin is set to logic high level.
• Adjustable output: 1V – 5V
• High PSRR: 65d B at 1k Hz The characteristics of low dropout voltage and less quiescent • Ultra-fast start-up time: 25µs current make it good for low power applications, for example, battery powered devices. The typical quiescent current is
• Stable with low ESR, 1µF ceramic output capacitor
approximately 40μA from zero to maximum load.
• Excellent Load/Line Transient Response • Low dropout: 350m V at 300m A Built-in current-limit and thermal-shutdown functions prevent
• Current limit protection IC from damage in fault conditions.
• Short circuit protection
The AP133 is available in SOT25 and DFN2020-6 packages.
• Thermal shutdown protection • Ambient temperature range: -40ºC to 85°C • SOT25 and DFN2020-6: Available in “Green” Molding Compound (No Br, Sb) • Lead Free Finish/Ro HS Compliant (Note 1)
Applications
• Cellular Phones • Smart Phones, PDAs • MP3/MP4 • Bluetooth head set • Low power application
Ordering Information
AP 133 - XX G - 7
Green Packing Package
W : SOT25 G : Green 7 : Tape & Reel SN : DFN2020-6
Packaging 7” Tape and Reel
Device Package
Code (Note 2) Quantity Part Number Suffix
AP133-WG-7 W SOT25 3000/Tape & Reel -7 AP133-SNG-7 SN DFN2020-6 3000/Tape & Reel -7 Notes: 1. EU Directive 2002/95/EC (Ro HS). All applicable Ro HS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
AP133 Rev. 6 1 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated
Page Summary Contents For DIODES INC. - AP133 300mA Low Quiescent Current Fast Transient Low Dropout Linear Regulator Data Manual
Manual Details
| Brand | Current |
|---|---|
| Pages | 15 |
| File Size | 409.53 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What capacitor values should I use for proper setup?
You should bypass the IN pin with at least a 0.1µF capacitor, and connect a 1µF ceramic output capacitor to the OUT pin.
What range of voltage can this regulator handle?
The input voltage operates within the recommended range of 2V to 6V, providing adjustable output from 1V to 5V.
Does the device offer protection against faults?
Yes, it features built-in current limit, thermal shutdown, and short circuit protection circuitry.
How efficient is this regulator for low power use?
It has a very low typical quiescent current of approximately 40µA, making it excellent for battery-powered devices.