MCP1256-E/MF Power Management ICs - PMIC by Microchip Technology

Inductorless Positive Regulated Charge Pump

Status: Active
Series: MCP1256
RoHS: Compliant
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The MCP1256, MCP1257, MCP1258 and MCP1259 are inductorless, positive regulated charge pump DC/DC converters. Generating a regulated 3.3 V output voltage from a 1.8 V to 3.6 V input, they are specifically designed for applications operating from 2 cell alkaline, 2 cell Ni-Cd, 2 cell Ni-MH, or one primary lithium coin cell battery. These devices automatically switch from 1.5x to 2x boost operation modes to maintain high efficiency. In addition, at light output loads, the MCP1256 and MCP1257 can be placed in a sleep mode, lowering the quiescent current while maintaining the regulated output voltage. Alternatively, the MCP1258 and MCP1259 provide a bypass feature connecting the input voltage to the output. This allows for real-time clocks, microcontrollers or other system devices to remain biased with virtually no current being consumed by the MCP1258 or MPC1259. In normal operation, the charge pumps switch at a fixed 650 kHz, avoiding sensitive IF bands, and the output voltage ripple is below 20 mVP-P at load currents up to 100 mA. The MCP1256 and MCP1258 feature a power-good output that can be used to detect out-of-regulation conditions. The MCP1257 and MCP1259 feature a low battery indication that issues a warning if the input voltage drops below a preset voltage threshold. Extremely low supply current and few external parts (4 capacitors) make these devices ideal for small, battery powered applications. A shutdown mode is also provided for further power reduction. The devices incorporate thermal and short-circuit protection.

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Features

High accuracy 3.3 V ±3.0 % output voltage
Accepts 1.8 V to 3.6 V input voltages
Supplies up to 100 mA output current
Low 20 mVp-p output voltage ripple
Integrated thermal shutdown and short circuit protection
Uses small ceramic capacitors
Operates at 650 kHz switching frequency
Low-power sleep mode feature on MCP1256/7
Bypass mode on MCP1258/9
Low-power 0.1 μA shutdown mode
Shutdown input compatible with 1.8 V logic
Soft-start circuitry to minimize inrush current
Available in 10 pin 3x3 DFN or 10 pin MSOP packages

Specifications

Typical Active Output Current (mA) 100
Output Voltage (V) 3.3
Typical Quiescent Current (µA) 1400
Vin Max (V) 3.6
Vin Min (V) 1.8
Temp. Range Max. (°C) 125
Temp. Range Min. (°C) -40
Pins | Packaging 10 | DFN
Temp Range -40C to +125C
Packing Media Tube (120)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.0239
Shipping Weight (kg) 0.041667
Lead Count 10
Package Type DFN
Package Width or Size 3x3x0.9mm
Soldering Composition Matte Tin

Alternative Descriptions

REG. CHARGE PUMP | Microchip Technology
Dc-Dc Converter, 650Khz, Dfn-10 | Newark Electronics
MCP1256 Series 3.3 V Low-Ripple Charge Pump w/ Low Current Sleep/Bypass - DFN-10 | Future Electronics
Conv DC-DC Single Step Up 1.8V to 3.6V 10-Pin DFN EP Tube | Avnet America
Charge-Pump DC-DC 3.3V Sleep DFN10EP | Microchip Technology Inc. MCP1256-E/MF | RS Americas
IC, CHARGE PUMP, DC/DC, CONV, 10DFN | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a MCP1256-E/MF?

Additional datasheets, footprints and schematics for MCP1256-E/MF are listed on our Part Details page. You can also find images and similar parts to MCP1256-E/MF on this page.

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What category does MCP1256-E/MF fall under?

The MCP1256-E/MF is listed under Semiconductors - ICs > Power Management ICs - PMIC > DC / DC Power Management > DC / DC Inductorless Charge Pumps.

Can I view similar or alternative parts?

You can view similar parts to MCP1256-E/MF when available in the DC / DC Inductorless Charge Pumps range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the MCP1256-E/MF you can contact the distributor directly for product support, shipping queries etc.

Is the MCP1256-E/MF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for MCP1256-E/MF have stock available?

Authorised distributors including Microchip Technology, Newark Electronics, Future Electronics, Avnet America and RS Americas have stock available or on a lead time for MCP1256-E/MF.

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