NCP1421DMR2G DC-DC Power Conversion by ON Semiconductor

Boost Converter, Sync-Rect, PFM, DC-DC, 600 mA, with True-Cutoff and Ring-Killer

Status: Active
Series: NCP1421
RoHS: Compliant
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NCP1421 is a monolithic micropower high-frequency step-up switching converter IC specially designed for battery- operated hand-held electronic products up to 600 mA loading. It integrates Sync-Rect to improve efficiency and to eliminate the external Schottky Diode. High switching frequency (up to 1.2 MHz) allows for a low profile, small sized inductor and output capacitor to be used. When the device is disabled, the internal conduction path from LX or BAT to OUT is fully blocked and the OUT pin is isolated from the battery. This True-Cutoff function reduces the shutdown current to typically only 50nA. Ring-Killer is also integrated to eliminate the high-frequency ringing in discontinuous conduction mode. In addition to above, Low-Battery Detector, Logic-Controlled Shutdown, Cycle-by Cycle Current Limit and Thermal Shutdown provide value-added features for various battery operated applications. With all these functions ON, the quiescent supply current is typically only 8.5 μA. This device is available in the compact and low Micro8 package.

Where to Buy

Prices starting from US$0.48

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Newark Electronics
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Features

High Efficiency: 94% for 3.3 V Output at 200 mA from 2.0 V Input 84% for 3.3 V Output at 500 mA from 2.5 V Input
High Switching Frequency, up to 1.2 MHz (Not Hitting Current Limit)
True-Cutoff Function Reduces Device Shutdown Current to typically 50nA
Anti-Ringing Ring-Killer for Discontinuous Conduction Mode
High Accuracy Reference Output, 1.2V 1 1.5%, can supply 2.5mA Loading Current when VOUT > 3.3V
Low Quiescent Current of 8.5 µA
Integrated Low-Battery Detector
Open Drain Low -Battery Detector Output
1.0V Startup at No Load Guaranteed
Output Voltage from 1.5V to 5.0V Adjustable
1.5 A Cycle-by-Cycle Current Limit
Multi-function Logic Controlled Shutdown Pin
On Chip Thermal Shutdown with Hysteresis
Output Current up to 600mA at VIN=2.5V and VOUT=3.3V
Housed in Space Saving and Low Profile Micro8 package
Pb-Free Package is Available
Applications
Personal Digital Assistants (PDA)
Handheld Digital Audio Products
Conversion from one to two Alkaline, NiMH, NICd Battery Cells to 3.0-5.0V or one Lithium-ion cell to 5.0V
End Products
Camcorders and Digital Still Cameras
Handheld Instruments

Specifications

Description NCP1421
Compliance Pb-free Halide free
Topology Step-Up
Control Mode Current/Voltage Mode
VCC Min (V) 1
VCC Max (V) 5.5
VO Typ (V) 1.5 to 5.0
IO Typ (A) 0.6
Efficiency (%) Up to 94
fSW Typ (kHz) 1200
Package Type Micro8

Last 6 months Inventory & Pricing History


Alternative Descriptions

ON Semiconductor NCP1421DMR2G Spannungsregler - DC/DC-Schaltregler Positiv Einstellbar 0.60 A Tape on Full reel | Conrad
Boost-Schaltr. Adj 600mA 1-5Vi Micro8 | Schukat Electronic
Synchronous Step-Up Dc/Dc Converter, Micro8, Full Reel | Newark Electronics
NCP1421 Series 5 V 600 mA Sync-Rect PFM Step-Up DC-DC Converter - MICRO-8 | Future Electronics
DC/DC CONV, BOOST, 1.2MHZ, MICRO-8 | Farnell


Frequently Asked Questions

Where can I find additional details, specifications and documents for a NCP1421DMR2G?

Additional datasheets, footprints and schematics for NCP1421DMR2G are listed on our Part Details page. You can also find images and similar parts to NCP1421DMR2G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for NCP1421DMR2G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view NCP1421DMR2G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does NCP1421DMR2G fall under?

The NCP1421DMR2G is listed under Power Management > DC-DC Power Conversion > Converters.

Can I view similar or alternative parts?

You can view similar parts to NCP1421DMR2G when available in the Converters range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the NCP1421DMR2G you can contact the distributor directly for product support, shipping queries etc.

Is the NCP1421DMR2G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for NCP1421DMR2G have stock available?

Authorised distributors including Conrad, Schukat Electronic, Newark Electronics, Future Electronics and Farnell have stock available or on a lead time for NCP1421DMR2G.

How do I check stock and lead times for all distributors?

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