MCP1256/7/8/9EV Microchip Technology, MCP1256/7/8/9EV Datasheet

MCP1256/7/8/9EV

Manufacturer Part Number

MCP1256/7/8/9EV

Description

BOARD EVAL FOR MCP1256/7/8/9

Manufacturer

Microchip Technology

Datasheets

1.MCP3901T-ISS.pdf (36 pages)

2.MCP1257-EUN.pdf (24 pages)

3.MCP1256789EV.pdf (22 pages)

Specifications of MCP1256/7/8/9EV

Main Purpose

DC/DC, Step Up

Outputs And Type

1, Non-Isolated

Voltage - Output

3.3V

Current - Output

100mA

Voltage - Input

1.6 ~ 3.6V

Regulator Topology

Buck-Boost

Frequency - Switching

650kHz

Board Type

Fully Populated

Utilized Ic / Part

MCP1256, MCP1257, MCP1258, MCP1259

Processor To Be Evaluated

MCP1256/7/8/9

Lead Free Status / RoHS Status

Not applicable / Not applicable

Power - Output

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Not applicable / Not applicable

Current page: 1 of 24
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Features

• Inductorless 1.5x, 2x Boost DC/DC Converter

• Output Voltage: 3.3V

• High Output Voltage Accuracy:

• Output Current Up To 100 mA

• 20 mV

• Thermal Shutdown and Short Circuit Protection

• Uses Small Ceramic Capacitors

• Switching Frequency: 650 kHz

• Low-Power SLEEP Mode: MCP1256/7

• BYPASS Mode: MCP1258/9

• Low-Power Shutdown Mode: 0.1 μA (Typical)

• Shutdown Input Compatible with 1.8V Logic

• V

• Soft-Start Circuitry to Minimize Inrush Current

• Temperature Range: -40°C to +125°C

• Packaging:

Applications

• Pagers

• Portable Measurement Instruments

• Home Automation Products

• PICmicro

Typical Application

INPUT

1.8V to 3.6V

- ±3.0% (V

- 10-Pin, 3 mm x 3 mm DFN

- 10-Pin, MSOP

Regulated 3.3V, Low-Ripple Charge Pump with Low-

Operating Current SLEEP Mode or BYPASS Mode

Range: 1.8V to 3.6V

10 μF

ON / OFF

Typical Application with Power-Good Indication

Output Voltage Ripple

1 μF

MCU Bias

OUT

Fixed)

SHDN

SLEEP

MCP1256

PGOOD

GND

OUT

1 μF

10 μF

Power-Good

Indication

OUT

OUTPUT

3.3V

MCP1256/7/8/9

Description

The MCP1256, MCP1257, MCP1258 and MCP1259

are inductorless, positive regulated charge pump

DC/DC converters. The devices generate a regulated

3.3V output voltage from a 1.8V to 3.6V input. The

devices are specifically designed for applications

operating from 2-cell alkaline, Ni-Cd, or Ni-MH

batteries or by one primary lithium MnO2 (or similar)

coin cell battery.

The MCP1256, MCP1257, MCP1258 and MCP1259

provide high efficiency by automatically switching

between 1.5x and 2x boost operation. 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.

microcontrollers or other system devices to remain

biased with virtually no current being consumed by the

MCP1258 or MPC1259.

In normal operation, the output voltage ripple is below

20 mV

tion occurs at a fixed switching frequency of 650 kHz,

avoiding interference with sensitive IF bands.

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 pro-

tection. Two package offerings are provided: 10-pin

MSOP and 10-lead 3 mm x 3 mm DFN. The devices

are completely characterized over the junction temper-

ature range of -40°C to +125°C.

at load currents up to 100 mA. Normal opera-

This

allows

for

real-time

DS21989A-page 1

clocks,

Related parts for MCP1256/7/8/9EV

MCP1256/7/8/9EV Summary of contents

Page 1

... SLEEP GND ON / OFF 9 Typical Application with Power-Good Indication © 2006 Microchip Technology Inc. MCP1256/7/8/9 Description The MCP1256, MCP1257, MCP1258 and MCP1259 are inductorless, positive regulated charge pump DC/DC converters. The devices generate a regulated 3.3V output voltage from a 1.8V to 3.6V input. The ...

Page 2

... Transfer L BYPASS — — Legend Logic Low Logic High DS21989A-page 2 10 SHDN LBO 1 9 GND SLEEP OUT 10 SHDN LBO 1 9 GND BYPASS OUT Gate Drives S1 S5 S5, S1,S3, S2(CE — MCP1257 10 SHDN 9 GND MCP1259 10 SHDN 9 GND OUT © 2006 Microchip Technology Inc. ...

Page 3

... Threshold Thermal Shutdown T J(HYS) Hysteresis © 2006 Microchip Technology Inc. MCP1256/7/8/9 † Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied ...

Page 4

... IN IN OUT Unit Conditions μA μ 0V SLEEP OUT % Percent of V Falling OUT mV V Rising OUT 0.5 mA 1.8V SINK IN μ PGOOD Falling Rising 0.5 mA 1.8V SINK IN μ LBO μA μ 0V mA, BYPASS OUT T = +25° 2.4V IN © 2006 Microchip Technology Inc. ...

Page 5

... OUT J Parameters Temperature Ranges Specified Temperature Range Operating Temperature Range Storage Temperature Range Thermal Package Resistances Thermal Resistance, 10-Lead, MSOP Thermal Resistance, 10-Lead, DFN © 2006 Microchip Technology Inc. = 1.8V to 3.6V, SHDN = +25°C. J Min Typ Max Units — 650 — kHz — ...

Page 6

... Mode Transition 2.1 2.4 2.7 3.0 3.3 Input Voltage (V) Efficiency ( ) vs. Supply OUT Mode Transition 2.1 2.4 2.7 3.0 3.3 Input Voltage (V) Efficiency ( ) vs. Supply I = 100 mA OUT Mode Transition 2.1 2.4 2.7 3.0 3.3 Input Voltage (V) Efficiency ( ) vs. Supply © 2006 Microchip Technology Inc. ...

Page 7

... Input Voltage ( 1.8 1.7 1.6 1.5 1.4 1.3 1 Output Current (mA) FIGURE 2-9: Quiescent Supply Current (I ) vs. Output Current ( Normal Mode. Q OUT © 2006 Microchip Technology Inc μ μF, I OUT 1 2 OUT 2.4 2 3. 2.1V IN 1.8 1.6 1.4 1.2 0 110 130 ) vs ...

Page 8

... FIGURE 2-18: Time - Normal 1.5x Mode mA, and T = +25° 2. 100 mA OUT Time (μs) Output Voltage Ripple vs 3. OUT Time (μs) Output Voltage Ripple vs 3. OUT Time (μs) Output Voltage Ripple vs. © 2006 Microchip Technology Inc. ...

Page 9

... FIGURE 2-20: Output Voltage Ripple vs. Time - SLEEP Mode. 0.20 0.15 0.10 0.05 0.00 -0.05 -0.10 -0.15 -0.20 Time (μs) FIGURE 2-21: Output Voltage Ripple vs. Time - SLEEP Mode. © 2006 Microchip Technology Inc μ μF, I OUT 1 2 OUT 0. 3. 100 mA OUT ...

Page 10

... FIGURE 2-28: = +25°C. A 0.20 0.10 0.00 -0. OUT -0.20 -0.30 -0.40 -0.50 -0.60 Time (μs) Line Transient Response. 0.20 0.10 0.00 -0. 100 mA OUT -0.20 -0.30 -0.40 -0.50 -0.60 Time (μs) Line Transient Response. © 2006 Microchip Technology Inc. ...

Page 11

... SLEEP mode performs pulse skip operation reducing the current draw of the device at the expense of increased output voltage ripple. © 2006 Microchip Technology Inc. Function Power-Good Indication Open-Drain Output Pin: MCP1256 and MCP1258 Low-Battery Indication Open-Drain Output Pin: MCP1257 and MCP1259 ...

Page 12

... BYPASS connects the input supply voltage to the output. All remaining functions of the device are shutdown. BYPASS mode can substantially increase battery run- time in portable applications OUT OUT OUT = ---------------------------------------- - = --------------------- - V 1 1.5 IN OUT OUT OUT OUT = ------------------------------------ = ----------------- - OUT IN © 2006 Microchip Technology Inc. ...

Page 13

... Shutdown, or release from BYPASS (MCP1258/9) for the output voltage regulation. © 2006 Microchip Technology Inc. 4.9 Thermal Shutdown The MCP1256/7/8/9 devices feature thermal shutdown with temperature hysteresis. When the die temperature exceeds 160° ...

Page 14

... Typical Application with Low-Battery Indication FIGURE 6-1: Typical Application Circuits. DS21989A-page 14 MCP1256 OUT SHDN PGOOD μ SLEEP GND 9 MCP1259 OUT SHDN LBO μ BYPASS GND 9 OUTPUT 3.3V C OUT 10 μF Power-Good Indication OUTPUT 3.3V C OUT 10 μF Low-Battery Indication © 2006 Microchip Technology Inc. ...

Page 15

... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2006 Microchip Technology Inc. MCP1256/7/8/9 Example ...

Page 16

... MIN NOM MAX 10 0.50 BSC 0.80 0.90 1.00 0.00 0.02 0.05 0.20 REF. 2.85 3.00 3.15 2.08 2.39 2.45 2.85 3.00 3.15 1.30 1.65 1.70 0.18 0.25 0.30 0.30 0.40 0.50 0.20 — — Revised 09-12-05 © 2006 Microchip Technology Inc. ...

Page 17

... Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254 mm) per side. BSC: Basic Dimension. Theoretically exact value shown without tolerances. See ASME Y14.5M REF: Reference Dime n sion, usually witho ut tolerance, for information purposes only. See ASME Y14.5M JEDEC Equivalent: MO-187 BA Drawing No. C04-021 © 2006 Microchip Technology Inc ...

Page 18

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Page 21

... BYPASS Mode and Low -Battery Indication, Tape and Reel Temperature Range +125 C Package MF = Dual Flat, No Lead (3x3 mm body), 10-Lead UN = Plastic Micro Small Outline (MSOP), 10-Lead © 2006 Microchip Technology Inc. MCP1256/7/8/9 . Examples: a) MCP1256-EMF: E-Temp, DFN package b) MCP1256T-EMF: Tape and Reel, E-Temp, ...

Page 22

Page 23

... PowerMate, PowerTool, Real ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and Zena are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 24

... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2006 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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