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500mA High Efficiency, Low Noise, Inductorless Step-Down DC/DC Converters
| Manufacturer : | Analog Devices, Inc |
|---|---|
| Package/Case : | 10-Lead MSOP w/ EP |
| Product Categories : | Inductorless (Charge Pump) DC/DC Converters ; Regulated Step-Down Charge Pumps |
| Datasheet: | LTC3251EMSE(LTB4) Datasheet (PDF) |
| RoHs Status: | Lead free/RoHS Compliant |
| In-stock: | 237 |
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LTC3251EMSE(LTB4) Product Details
The LTC3251/LTC3251-1.2/LTC3251-1.5 are 2-phase charge pump step-down DC/DC converters that produce a regulated output from a 2.7V to 5.5V input. The parts use switched capacitor fractional conversion to achieve twice the typical efficiency of a linear regulator. No inductors are required. VOUT is resistor programmable from 0.9V to 1.6V or fixed at 1.2V or 1.5V, with up to 500mA of load current available.
A unique 2-phase spread spectrum architecture provides a very low noise regulated output as well as low noise at the input. The parts have four operating modes: Continuous Spread Spectrum, Spread Spectrum with Burst Mode operation, Super Burst™ mode operation and shutdown.
Low operating current (35µA in Burst Mode operation, 10µA in Super Burst mode operation) and low external parts count make the LTC3251/LTC3251-1.2/LTC3251-1.5 ideally suited for space-constrained battery-powered applications. The parts are short-circuit and over-temperature protected, and are available in a thermally enhanced 10-pin MSOP package.
Feature
- Up to 500mA Output Current
- No Inductors
- 2.7V to 5.5V Input Voltage Range
- 2x Efficiency Improvement Over LDOs
- 2-Phase, Spread Spectrum Operation for Low Input and Output Noise
- Shutdown Disconnects Load from VIN
- Adjustable Output Voltage Range: 0.9V to 1.6V
- Fixed Output Voltages: 1.2V, 1.5V
- Super Burst, Burst and Burst Defeat Operating Modes
- Low Operating Current: IIN = 35µA (Burst Mode® Operation)
- Super Burst Operating Current: IIN = 10µA
- Low Shutdown Current: IIN = 0.01µA Typ
- Soft-Start Limits Inrush Current at Turn-On
- Short-Circuit and Overtemperature Protected
- Available in a Thermally Enhanced 10-Pin MSOP Package
Applications
- Handheld Devices
- Cellular Phones
- Portable Electronic Equipment
- DSP Power Supplies
(Picture: Pinout)
(Picture: Diagram)
Technical Parameters
- Number of Outputs
- 1
- Vinmin | V
- 2.7
- Vinmax | V
- 5.5
- Output Currenttyp | A
- 500m
- Output Voltage
- 1.2V, 1.5V, Adj
- Isupplytyp | A
- 9µ
- Comments
- Spread spectrum, ultralow noise, 2-phase operation
LTC3251EMSE(LTB4) Datasheet
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LTC3251 Technical Documentation/Data sheet
LTC3251EMSE(LTB4) Related Products
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- Lead Time
- DHL
- $20.00-$40.00 (0.50 KG)
- 2-5 days
- Fedex
- $20.00-$40.00 (0.50 KG)
- 3-7 days
- UPS
- $20.00-$45.00 (0.50 KG)
- 2-5 days
- TNT
- $25.00-$65.00 (0.50 KG)
- 2-5 days
- EMS
- $25.00-$45.00 (0.50 KG)
- 5-14 days
- REGISTERED AIR MAIL
- $2.00-$3.00 (0.10 KG)
- 7-30 days
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Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
FAQ:
- Q: How does Jotrin guarantee that LTC3251EMSE(LTB4) is the original manufacturer or agent of ADI?
- We have a professional business development department to strictly test and verify the qualifications of ADI original manufacturers and agents. All ADI suppliers must pass the qualification review before they can publish their LTC3251EMSE(LTB4) devices; we pay more attention to the channels and quality of LTC3251EMSE(LTB4) products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
- Q: How to find the detailed information of LTC3251EMSE(LTB4) chips? Including ADI original factory information, Inductorless (Charge Pump) DC/DC Converters ; Regulated Step-Down Charge Pumps application, LTC3251EMSE(LTB4) pictures?
- You can use Jotrin's intelligent search engine, or filter by Inductorless (Charge Pump) DC/DC Converters ; Regulated Step-Down Charge Pumps category, or find it through Analog Devices, Inc Information page.
- Q: Are the ADI's LTC3251EMSE(LTB4) price and stock displayed on the platform accurate?
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Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days. - Q: What is the process for returns or replacement of LTC3251EMSE(LTB4)?
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All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment.
If there is something wrong with the LTC3251EMSE(LTB4) we delivered, we will accept the replacement or return of the LTC3251EMSE(LTB4) only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of LTC3251EMSE(LTB4).
(3)The LTC3251EMSE(LTB4) is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy. - Q: How to contact us and get support, such as LTC3251EMSE(LTB4) datasheet pdf, LTC3251 pin diagram?
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