MCP1640-I/MC Microchip Technology, MCP1640-I/MC Datasheet
MCP1640-I/MC
Specifications of MCP1640-I/MC
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MCP1640-I/MC Summary of contents
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... Internal Compensation • Inrush Current Limiting and Internal Soft-Start • Selectable, Logic Controlled, Shutdown States: - True Load Disconnect Option (MCP1640/B) - Input to Output Bypass Option (MCP1640C/D) • Shutdown Current (All States): < 1 µA • Low Noise, Anti-Ringing Control • Overtemperature Protection • ...
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... MCP1640/B/C 0. µ 4 3. µ 4.7 - Efficiency vs. I 100.0 80.0 60.0 40.0 0.1 DS22234A-page µ 4 OUT V IN 976 K 562 K GND L 1 µ 4 OUTS OUTP 976 K 309 K GND GND for 3.3V OUT OUT V = 0.8V IN 1.0 10.0 100 ...
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... OUT quiescent current will vary with boost ratio )), ( )). IN QPWM OUT IN (15 mA). MCP1640/B/C/D the operational sections of this = 3.3V mA, OUT OUT Units Conditions V Note 1 V Note 1 Note 2 OUT ...
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... MCP1640/B/C/D DC CHARACTERISTICS (CONTINUED) Electrical Characteristics: Unless otherwise indicated +25°C. A Boldface specifications apply over the T A Parameters Sym NMOS Peak Switch Current I N(MAX) Limit V Accuracy V OUT OUT V Line Regulation V OUT V V Load Regulation V OUT Maximum Duty Cycle ...
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... FIGURE 2-5: Mode Efficiency vs. I 100 V OUT = 5. 4.5 5 0.01 vs FIGURE 2-6: IN Mode Efficiency vs. I MCP1640/B/C/D = 3.3V mA +25°C. OUT LOAD 2.0V OUT 1.2V IN PWM / PFM PWM ONLY 0 100 1000 I (mA) OUT 2.0V V PFM / PWM OUT . OUT 2.5V OUT ...
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... MCP1640/B/C/D Note: Unless otherwise indicated 1.2V 3. OUT 3.325 3. 1.8V IN 3.315 3.31 3.305 3 0.8V IN 3.295 3.29 3.285 -40 -25 - Ambient Temperature (°C) FIGURE 2-7: 3.3V V vs. Ambient OUT Temperature. 3. 1. OUT 3.34 3.32 3. OUT 3. OUT 3.26 -40 -25 - Ambient Temperature (°C) FIGURE 2-8: 3 ...
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... L = 4.7 µH, V OUT 5.0V OUT = 3. 5.0V OUT 2.9 3.2 3.5 FIGURE 2-16: Mode Waveforms. 4 4.5 5 FIGURE 2-17: PWM Mode Waveforms 5.0V OUT 3 3.5 4 FIGURE 2-18: Waveforms. = 3.3V mA +25°C. OUT LOAD A MCP1640 3.3V V PFM OUT MCP1640B 3.3V V OUT MCP1640/B High Load DS22234A-page 7 ...
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... Transient Waveforms. DS22234A-page µ 4.7 µH, V OUT IN OUT FIGURE 2-22: Transient Waveforms. = FIGURE 2-23: IN Transient Waveforms. Load FIGURE 2-24: OUT Waveforms. = 3.3V mA +25°C. LOAD A MCP1640B 3.3V V Load OUT MCP1640B 2.0V V Load OUT 3.3V V Line Transient OUT 2010 Microchip Technology Inc. ...
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... Exposed Thermal Pad (EP) pin for There is no internal electrical connection between the OUT Exposed Thermal Pad (EP) and the P pins. They must be connected to the same potential on the Printed Circuit Board (PCB). MCP1640/B/C/D Description SS The input IN ) GND and error amplifier. In the 2x3 DFN ...
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... MCP1640/B/C/D NOTES: DS22234A-page 10 2010 Microchip Technology Inc. ...
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... For noise immunity, the N-Channel MOSFET current sense is blanked for approximately 100 ns. With a typical minimum duty cycle of 100 ns, the MCP1640B/D continues to switch at a constant frequency under light load conditions. Figure 2-12 represents the input voltage versus load current for the pulse skipping threshold in PWM only mode ...
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... There is no undervoltage lockout feature for the MCP1640/B/C/D. The device will start up at the lowest possible voltage and run down to the lowest possible voltage. For typical battery applications, this may result in “ ...
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... The peak current limit is set to 800 mA typical. 4.2.3 PFM MODE OPERATION The MCP1640/C devices are capable of operating in normal PWM mode and PFM mode to maintain high efficiency at all loads. In PFM mode, the output ripple has a variable frequency component that changes with the input voltage and output current ...
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... MCP1640/B/C/D NOTES: DS22234A-page 14 2010 Microchip Technology Inc. ...
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... N-Channel peak current limit. Typical characterization curves in this data sheet are presented to display the typical output current capability. 5.2 Adjustable Output Voltage Calculations To calculate the resistor divider values for the MCP1640/B/C/D, the following equation can be used. Where R is connected TOP OUT BOT to GND and both are connected to the FB input pin ...
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... MCP1640/B/C/D 5.5 Inductor Selection The MCP1640/B/C/D is designed to be used with small surface mount inductors; the inductance value can range from 2.2 µ µH. An inductance value of 4.7 µH is recommended to achieve a good balance between inductor size, converter load transient response and minimized noise. ...
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... IN GND FIGURE 5-1: MCP1640/B/C/D SOT23-6 Recommended Layout GND FIGURE 5-2: MCP1640/B/C/D DFN-8 Recommended Layout. 2010 Microchip Technology Inc. MCP1640/B/C/D Via to GND Plane R R BOT MCP1640 1 Via for Enable L MCP1640 1 Enable TOP +V OUT C OUT GND Wired on Bottom Plane +V OUT C OUT ...
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... MCP1640/B/C/D NOTES: DS22234A-page 18 2010 Microchip Technology Inc. ...
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... MCP1640C device provides input to output bypass when disabled. The PIC Microcontroller is powered by the output of the MCP1640C. One of its I/O pins is used to enable and disable the MCP1640C to control its bias voltage. While operating in Sleep mode, the MCP1640C input quiescent current is typically less than 1 uA. ...
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... MCP1640/B/C/D NOTES: DS22234A-page 20 2010 Microchip Technology Inc. ...
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... 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. 2010 Microchip Technology Inc. MCP1640/B/C/D Example BZNN Example AHM 945 ...
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... MCP1640/B/C/D /HDG 3ODVWLF 6PDOO 2XWOLQH 7UDQVLVWRU &+ >627 1RWH N PIN LASER MARK 1RWHV DS22234A-page φ 2010 Microchip Technology Inc. ...
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... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 2010 Microchip Technology Inc. MCP1640/B/C/D DS22234A-page 23 ...
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... MCP1640/B/C/D /HDG 3ODVWLF 'XDO )ODW 1R /HDG 3DFNDJH 0& ± 1RWH D N NOTE TOP VIEW A3 1RWHV DS22234A-page 24 PP %RG\ >') EXPOSED PAD BOTTOM VIEW A NOTE NOTE 2010 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP1640/B/C/D PP %RG\ >')1@ DS22234A-page 25 ...
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... MCP1640/B/C/D NOTES: DS22234A-page 26 2010 Microchip Technology Inc. ...
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... APPENDIX A: REVISION HISTORY Revision A (February 2010) • Original Release of this Document. 2010 Microchip Technology Inc. MCP1640/B/C/D DS22234A-page 27 ...
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... MCP1640/B/C/D NOTES: DS22234A-page 28 2010 Microchip Technology Inc. ...
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... Sync Boost Regulator (Tape and Reel) Temperature Range I = -40C to +85C Package CH = Plastic Small Outline Transistor (SOT-23), 6-lead MC = Plastic Dual Flat, No Lead (2x3 DFN), 8-lead 2010 Microchip Technology Inc. MCP1640/B/C/D /XX Examples: Package a) MCP1640-I/MC: b) MCP1640T-I/MC: c) MCP1640B-I/MC: d) MCP1640BT-I/MC: e) MCP1640C-I/MC: f) MCP1640CT-I/MC: g) MCP1640D-I/MC:: h) ...
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... MCP1640/B/C/D NOTES: DS22234A-page 30 2010 Microchip Technology Inc. ...
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... REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, 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. ...
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