MCP1612-ADJI/MS Microchip Technology, MCP1612-ADJI/MS Datasheet
MCP1612-ADJI/MS
Specifications of MCP1612-ADJI/MS
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MCP1612-ADJI/MS Summary of contents
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... MCP1612 is ideal for applications that are powered by one single-cell Li-Ion 3-cell NiMH, NiCd or alkaline sources. The output voltage of the MCP1612 is easily set over the range of 0.8V to 5.0V by using an external resistor divider. The external inductor and output capacitor size are minimized due to an internally-fixed, 1.4 MHz clock being used to set the switching frequency ...
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... MCP1612 Functional Block Diagram Undervoltage V CC Lockout (UVLO) Slope Comp. + Comp FB – Disable 1.4 MHz Clock 0.8V A GND A GND DS21921B-page 2 UVLO + Peak Current Limit Disable V INSET REF IN Soft- Start Leading- Edge Blank V CC 1.2V Disable GND P-Channel SENSE PDRV L X Circuit ...
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... Typical Application Circuit MCP1612 3.3V to 1.2V Synchronous Buck Converter 3.3 V ±10 µF Ceramic C BYP 0.1 µF Ceramic ON OFF 25 k 1000 pF © 2005 Microchip Technology Inc 3.3 µ MCP1612 GND GND SHDN Comp MCP1612 1. OUT C OUT 100 k 10 µF Ceramic 200 k DS21921B-page 3 ...
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... MCP1612 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † V – A .......................................................................6.0V IN GND (SHDN, FB Comp ........... (A – 0.3V GND .............................................. -0. GND ................................................... -0.3V to +0.3V GND GND Output Short Circuit Current ................................. Continuous Storage temperature .....................................-65°C to +150°C Ambient Temp. with Power Applied.................-40°C to +85°C Operating Junction Temperature...................-40°C to +125°C ...
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... A T — — +150 — + 125 A — 208 — °C/W JA — 41 — °C/W JA MCP1612 = 1.8V µ 3.3 µH, IN OUT Conditions V Note 2 mV °C Note 1 ° and from cases where IN X GND must be overcome before the device will HYS = 0.1 µ -40° ...
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... MCP1612 2.0 TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e ...
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... FIGURE 2-10 2.0V/DIV V OUT 50 mV/DIV = 1.8V OUT FIGURE 2-11 2.0V/DIV V OUT 50 mV/DIV V = 1.8V OUT FIGURE 2-12: MCP1612 = 10 µ 3.3 µ 100 mA, LOAD I = 100 mA to 800 mA OUT 3.3V OUT 500 µs/DIV Load Transient Response. Line Step Response 3. 1.8V OUT ...
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... MCP1612 TYPICAL PERFORMANCE CURVES (Continued) Note: Unless otherwise indicated +25°C. Boldface specifications apply over the mA, V OUT OUT L X 2.0V/DIV V OUT 10 mV/DIV I IND 100 mA/DIV 500 ns/DIV FIGURE 2-13: Low Load Current Switching Waveform. DS21921B-page 3.3V µ 3.3 µ SHDN OUT IN range of -40° ...
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... MCP1612 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE Pin No. Name 1 V Input Voltage Pin Analog Input Voltage Pin CC 3 SHDN Shutdown Control Input Pin 4 COMP Transconductance Amplifier Output Pin 5 FB Feedback Input Pin ...
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... Shutdown Input Operation INDUCTOR The SHDN pin is used to turn the MCP1612 on and off. When the SHDN pin is tied low, the MCP1612 is off. When tied high, the MCP1612 will be enabled and begin operation as long as the input voltage is not below the UVLO threshold. ...
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... Output voltage = 1.2V Output current = Switching frequency = 1.4 MHz 5.2.1 SETTING OUTPUT VOLTAGE The output voltage of the MCP1612 is set by using an external resistor-divider network. The voltage present internally compared to a 0.8V reference voltage. A 200 k resistor is recommended for R lower-end of the voltage divider. Using higher-value © ...
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... MCP1612 5.2.2 BUCK INDUCTOR There are many requirements that need to be satisfied when selecting the buck inductor. The application, physical size, current rating, resistance, mounting method, supplier, temperature range, inductance and cost all need to be considered. Many suppliers specify the maximum peak current that an inductor can handle before magnetic saturation occurs ...
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... Printed Circuit Board (PCB) Layout The MCP1612 is capable of switching over 1A at 1.4 MHz. As with all high-frequency switching power supplies, good PCB layout techniques are essential to prevent noise generated by the switching power-train from interfering with the sensing circuitry. ...
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... MCP1612 6.0 PACKAGING INFORMATION 6.1 Package Marking Information 8-Lead DFN (3mm x 3mm) XXXX YYWW NNN 8-Lead MSOP XXXXX YWWNNN Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) ...
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... REF. .118 BSC .043 .061 .063 .118 BSC .059 .092 .096 .009 .012 .015 .008 .016 .020 MCP1612 MILLIMETERS* MIN NOM MAX 8 0.65 BSC 0.80 0.90 1.00 0.00 0.02 0.05 0.20 REF. 3.00 BSC 1 ...
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... MCP1612 8-Lead Plastic Micro Small Outline Package (MS) (MSOP Units Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff Overall Width Molded Package Width Overall Length Foot Length Footprint (Reference) Foot Angle Lead Thickness Lead Width Mold Draft Angle Top ...
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... Removed device qualification note in Package Marking section. 3. Removed device qualification note in Package Outline drawing. 4. Removed device qualification note in Package Identification System section 5. Replaced MSOP and QFN package diagrams. Revision A (December 2004) • Original Release of this Document. © 2005 Microchip Technology Inc. MCP1612 DS21921B-page 17 ...
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... MCP1612 NOTES: DS21921B-page 18 © 2005 Microchip Technology Inc. ...
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... I = -40°C to +85°C Package Dual Flat, No Lead (3x3mm Body), 8-lead MS = Plastic MSOP, 8-lead © 2005 Microchip Technology Inc. MCP1612 . Examples: a) MCP1612-ADJI/MS: Industrial Temperature, 8LD MSOP package. b) MCP1612T-ADJI/MS: Tape and Reel Industrial Temperature, 8LD MSOP package. c) MCP1612-ADJI/MF: Industrial Temperature, 8LD DFN package. ...
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... MCP1612 NOTES: DS21921B-page 20 © 2005 Microchip Technology Inc. ...
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... October 2003. The Company’s quality system processes and procedures are for its PICmicro devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified. MCP1612 ® 8-bit MCUs ® ...
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... 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 © 2005 Microchip Technology Inc. EUROPE Austria - Weis 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 ...