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AS1357
IC Reg Ldo Adj 0.2A 12QFN
AS1357
IC Reg Ldo Adj 0.2A 12QFN
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Manufacturer Part # : AS1357
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Package/Case: QFN9
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Brand: AMS
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Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
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Shipping & Payment
Shipping & Payment
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
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About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
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AS1357 DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
General DescriptionThe AS1357 is a high-performance triple CMOS low-dropout voltage regulator in a single QFN package. The efficient set of programmable power supplies is optimized to deliver the best compromise between quiescent current and regulator performance for mobile phones, PDAs, MP3 players, and other battery powered devices.Key Features■ 3 Independent Voltage Regulators with Shutdown■ Output Current: 200mA each LDO■ One Time Programmable Output Voltage (User- or Factory-Trimmed)■ Programmable Output Voltage Range: 1.8 to 3.3V in 0.1V Steps■ Accuracy: ±1.5%■ PSRR: 70dB at 1kHz, 40dB at 100kHz■ Line Regulation: ±2mV■ Load Regulation: ±0.6mV■ Supply Range: 3 to 5.5V■ 0.2V Dropout Voltage @ I = 200mA■ Shutdown Current: ≤1µA■ Supply Current Without Load: 175µA (typ)■ Softstart for Low Inrush Current■ Stable with low ESR Ceramic Capacitors from 1 to 4.7µF■ Low Noise: 40µV rms @10Hz to 100kHz Bandwidth■ Thermal Protection■ Over-Current Protection■ Temperature Range: -40 to +85°C■ Package Types: 12-pin QFN 4x4 and 16-pin QFN 3x3Applications The AS1357 is ideal for cordless and mobile phones, MP3 players, CD and DVD players, PDAs, handheld computers, digital cameras, and any other hand-held battery-powered device.
Key Features
- 3 Independent Voltage Regulators with Shutdown
- Output Current: 200mA each LDO
- One Time Programmable Output Voltage (User- or Factory-Trimmed)
- Programmable Output Voltage Range: 1.8 to 3.3V in 0.1V Steps
- Accuracy: ±1.5%
- PSRR: 70dB at 1kHz, 40dB at 100kHz
- Line Regulation: ±2mV
- Load Regulation: ±0.6mV
- Supply Range: 3 to 5.5V
- 0.2V Dropout Voltage @ I = 200mA
- Shutdown Current: ≤1µA
- Supply Current Without Load: 175µA (typ)
- Softstart for Low Inrush Current
- Stable with low ESR Ceramic Capacitors from 1 to 4.7µF
- Low Noise: 40µV rms @10Hz to 100kHz Bandwidth
- Thermal Protection
- Over-Current Protection
- Temperature Range: -40 to +85°C
- Package Types: 12-pin QFN 4x4 and 16-pin QFN 3x3
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Manufacturer | ams | Product Category ! | Linear Voltage Regulators |
| Series | - | Packaging ! | Tray Alternate Packaging |
| Package-Case | Surface Mount | Operating-Temperature | 12-QFN (4x4) |
| Mounting-Type | 1.8 V ~ 3.3 V | Supplier-Device-Package | Positive Adjustable |
| Voltage-Input | 0.2V @ 200mA | Current-Output | 3 Regulators |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is AS1357?
The AS1357 is a low-dropout voltage regulator (LDO) designed by Diodes Incorporated. It is ideal for applications requiring stable and reliable power supply voltages, such as consumer electronics, automotive systems, and wireless devices.
How Does AS1357 Work?
The AS1357 works by regulating an input voltage to a stable output voltage with low dropout voltage. It utilizes a feedback control mechanism to maintain the output voltage within specified tolerances, even under varying load conditions. The regulator features low quiescent current and high PSRR (Power Supply Rejection Ratio) for improved performance in noise-sensitive applications.
How Many Pins does AS1357 have and What are the Functions of the Pinout Configuration?
The AS1357 is housed in a 5-pin SOT-23 package. The pinout configuration includes:
- VIN: Input voltage pin.
- VOUT: Regulated output voltage pin.
- ADJ: Adjustable output voltage pin or enable pin, depending on the version.
- GND: Ground pin.
- NC (or TAB): No connect or tab, depending on the package version.
What are the Pros and Cons of AS1357?
Pros:
- Low Dropout Voltage: Provides a stable output voltage even when the input voltage is close to the output voltage.
- Low Quiescent Current: Minimizes power consumption in standby or low-load conditions.
- Small Package: The SOT-23 package is compact and space-efficient.
- High PSRR: Ensures good rejection of power supply noise for improved output stability.
Cons:
- Limited Current Capacity: May not be suitable for high-current applications.
- Temperature Consideration: Performance may be influenced by thermal considerations in high-temperature environments.
Are There Any Equivalents/Alternatives to AS1357 for Recommendation?
- The MCP1702 from Microchip Technology is an equivalent low-dropout voltage regulator.
- Alternatives to the AS1357 include the TLV702 from Texas Instruments and the XC6204 from Torex Semiconductor.
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