Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsPMICsPMIC - DC/DC voltage regulator Holder SOT 23 6

 2011-2012 Microchip Technology Inc. DS25004B-page 1

MCP16301

Features

• Up to 96% Typical Efficiency

• Input Voltage Range: 4.0V to 30V

• Output Voltage Range: 2.0V to 15V

• 2% Output Voltage Accuracy

• Integrated N-Channel Buck Switch: 460 m

•600 mA Output Current

•500 kHz Fixed Frequency

• Adjustable Output Voltage

• Low Device Shutdown Current

• Peak Current Mode Control

• Internal Compensation

• Stable with Ceramic Capacitors

• Internal Soft-Start

• Cycle-by-Cycle Peak Current Limit

• Under Voltage Lockout (UVLO): 3.5V

• Overtemperature Protection

• Available Package: SOT-23-6

Applications

•PIC

/dsPIC

Microcontroller Bias Supply

• 24V Industrial Input DC-DC Conversion

• Set-Top Boxes

• DSL Cable Modems

• Automotive

• Wall Cube Regulation

• SLA Battery Powered Devices

• AC-DC Digital Control Power Source

• Power Meters

•D

Package Linear Regulator Replacement

-See Figure 5-2

•Consumer

• Medical and Health Care

• Distributed Power Supplies

General Description

The MCP16301 is a highly integrated, high-efficiency,

fixed frequency, step-down DC-DC converter in a

popular 6-pin SOT-23 package that operates from input

voltage sources up to 30V. Integrated features include

a high-side switch, fixed frequency Peak Current Mode

Control, internal compensation, peak current limit and

overtemperature protection. Minimal external

components are necessary to develop a complete

step-down DC-DC converter power supply.

High converter efficiency is achieved by integrating the

current limited, low resistance, high-speed N-Channel

MOSFET and associated drive circuitry. High

switching frequency minimizes the size of external

filtering components, resulting in a small solution size.

The MCP16301 can supply 600 mA of continuous

current while regulating the output voltage from 2.0V to

15V. An integrated, high-performance peak current

mode architecture keeps the output voltage tightly

regulated, even during input voltage steps and output

current transient conditions that are common in power

systems.

The EN input is used to turn the device on and off.

While turned off, only a few micro amps of current are

consumed from the input for power shedding and load

distribution applications.

Output voltage is set with an external resistor divider.

The MCP16301 is offered in a space saving SOT-23-6

surface mount package.

Package Type

BOOST

GND

MCP16301

6-Lead SOT-23

High-Voltage Input Integrated Switch Step-Down Regulator

Summary of content (40 pages)

PAGE 1
MCP16301 High-Voltage Input Integrated Switch Step-Down Regulator Features General Description • • • • • • • • • • • • • • • • • The MCP16301 is a highly integrated, high-efficiency, fixed frequency, step-down DC-DC converter in a popular 6-pin SOT-23 package that operates from input voltage sources up to 30V. Integrated features include a high-side switch, fixed frequency Peak Current Mode Control, internal compensation, peak current limit and overtemperature protection.
PAGE 2
MCP16301 Typical Applications 1N4148 Vin 4.5V to 30V CBOOST L1 100 nF 15 µH Boost VOUT 3.3V @ 600 mA SW VIN CIN 10 µF COUT 2 X10 µF 40V Schottky Diode EN 31.2 k VFB GND 10 k 1N4148 Vin 6.0V to 30V CBOOST L1 100 nF 22 µH Boost VOUT 5.0V @ 600 mA SW VIN CIN 10 µF 40V Schottky Diode EN COUT 2 X10 µF 52.3 k VFB GND 10 k 100 VOUT = 5.0V 90 Efficiency (%) 80 70 VOUT = 3.
PAGE 3
MCP16301 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † VIN, SW ............................................................... -0.5V to 40V BOOST – GND ................................................... -0.5V to 46V BOOST – SW Voltage........................................ -0.5V to 6.0V VFB Voltage ........................................................ -0.5V to 6.0V EN Voltage ............................................. -0.5V to (VIN + 0.3V) Output Short Circuit Current .................
PAGE 4
MCP16301 DC CHARACTERISTICS (CONTINUED) Electrical Characteristics: Unless otherwise indicated, TA = +25°C, VIN = VEN = 12V, VBOOST - VSW = 3.3V,  VOUT = 3.3V, IOUT = 100 mA, L = 15 µH, COUT = CIN = 2 X 10 µF X7R Ceramic Capacitors Boldface specifications apply over the TA range of -40oC to +125oC.
PAGE 5
MCP16301 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.g., outside specified power supply range) and therefore outside the warranted range.
PAGE 6
MCP16301 505 500 495 490 485 480 475 470 465 460 455 510 VIN = 12V VOUT = 3.3V IOUT = 200 mA 490 480 470 460 450 430 420 -20 0 3 20 40 60 80 100 120 Ambient Temperature (°C) FIGURE 2-7: Switching Frequency vs. Temperature; VOUT = 3.3V. 95.4 3.5 4 4.5 5 Boost Voltage (V) FIGURE 2-10: 95.5 Switch RDSON vs. VBOOST. 0.802 VIN = 5V IOUT = 200 mA 0.801 95.3 VFBB Voltage (V) Maximum m Duty Cycle (%) VDS = 100 mV 440 -40 95.2 95.1 95 94.9 VIN = 12V VOUT = 3.3V IOUT = 100 mA 0.800 0.
PAGE 7
MCP16301 0.70 VIN = 12V VOUT = 3.3V IOUT = 100 mA 0.65 0.60 0.55 0.50 0.45 5.00 Minimum Input Voltage (V) Enable Threshold Voltage (V) Note: Unless otherwise indicated, VIN = EN = 12V, COUT = CIN = 2 X10 µF, L = 15 µH, VOUT = 3.3V, ILOAD = 200 mA, TA = +25°C. 4.70 To Start 4.40 4.10 3.80 To Run 3.50 3.20 0.40 -40 -25 -10 FIGURE 2-13: Temperature. VOUT 20 mV/DIV AC coupled 1 5 20 35 50 65 80 95 110 125 Ambient Temperature (°C) EN Threshold Voltage vs.
PAGE 8
MCP16301 Note: Unless otherwise indicated, VIN = EN = 12V, COUT = CIN = 2 X10 µF, L = 15 µH, VOUT = 3.3V, ILOAD = 200 mA, TA = +25°C. VOUT = 3.3V IOUT = 100 mA to 600 mA VOUT  AC coupled 100 mV/DIV IOUT  200 mA/DIV 100 µs/DIV FIGURE 2-19: Load Transient Response. VOUT = 3.3V IOUT = 100 mA VIN = 8V to 12V Step VOUT  AC coupled 100 mV/DIV VIN  1V/DIV 10 µs/ FIGURE 2-20: DS25004B-page 8 Line Transient Response.  2011-2012 Microchip Technology Inc.
PAGE 9
MCP16301 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE MCP16301 SOT-23 Symbol Description 1 BOOST 2 GND Boost voltage that drives the internal NMOS control switch. A bootstrap capacitor is connected between the BOOST and SW pins. Ground Pin 3 VFB Output voltage feedback pin. Connect VFB to an external resistor divider to set the output voltage. 4 EN Enable pin. Logic high enables the operation. Do not allow this pin to float.
PAGE 10
MCP16301 NOTES: DS25004B-page 10  2011-2012 Microchip Technology Inc.
PAGE 11
MCP16301 4.0 DETAILED DESCRIPTION 4.1 Device Overview The MCP16301 is a high-input voltage step-down regulator, capable of supplying 600 mA to a regulated output voltage from 2.0V to 15V. Internally, the trimmed 500 kHz oscillator provides a fixed frequency, while the Peak Current Mode Control architecture varies the duty cycle for output voltage regulation. An internal floating driver is used to turn the high-side integrated N-Channel MOSFET on and off.
PAGE 12
MCP16301 VIN BG REF CIN VOUT VREG Boost Pre Charge SS OTEMP VREF RTOP + Amp - FB RCOMP - + - HS Drive SW Schottky Diode PWM Latch R Precharge Overtemp COUT CS + + CCOMP VREF EN VOUT S Comp Boost Diode CBOOST 500 kHz OSC + RBOT BOOST RSENSE SHDN all blocks GND Slope Comp GND FIGURE 4-1: 4.2 4.2.1 MCP16301 Block Diagram.
PAGE 13
MCP16301 4.2.2 PEAK CURRENT MODE CONTROL The MCP16301 integrates a Peak Current Mode Control architecture, resulting in superior AC regulation while minimizing the number of voltage loop compensation components, and their size, for integration. Peak Current Mode Control takes a small portion of the inductor current, replicates it and compares this replicated current sense signal with the output of the integrated error voltage.
PAGE 14
MCP16301 Boost Diode C1 VZ = 5.1V BOOST RSH CB EN L MCP16301 VIN VOUT SW 2V VIN 12V COUT FW Diode CIN RTOP FB GND RBOT 3.0V to 5.5V External Supply Boost Diode BOOST CB EN L MCP16301 VIN 2V VIN 12V VOUT SW COUT FW Diode CIN RTOP FB GND RBOT FIGURE 4-3: Shunt and External Boost Supply. Shunt Boost Supply Regulation is used for low output voltage converters operating from a wide ranging input source. A regulated 3.0V to 5.5V supply is needed to provide high side-drive bias.
PAGE 15
MCP16301 To calculate the shunt resistance, the maximum IBOOST and IZ current are used at the minimum input voltage (Equation 4-2). EQUATION 4-2: VZ and IZ can be found on the Zener diode manufacturer’s data sheet. Typical IZ = 1 mA. SHUNT RESISTANCE V INMIN – V Z R SH = -----------------------------I Boost + I Z Boost Diode VZ = 7.5V BOOST CB EN L MCP16301 VIN 12V VIN 15V to 30V VOUT SW COUT FW Diode CIN RTOP FB GND RBOT Boost Diode BOOST VZ = 7.
PAGE 16
MCP16301 NOTES: DS25004B-page 16  2011-2012 Microchip Technology Inc.
PAGE 17
MCP16301 5.0 APPLICATION INFORMATION 5.1 Typical Applications The MCP16301 step-down converter operates over a wide input voltage range, up to 30V maximum. Typical applications include generating a bias or VDD voltage for the PIC® microcontroller product line, digital control system bias supply for AC-DC converters, 24V industrial input and similar applications. 5.2 Adjustable Output Voltage Calculations To calculate the resistor divider values for the MCP16301, Equation 5-1 can be used.
PAGE 18
MCP16301 5.4 Input Capacitor Selection 5.6 The step-down converter input capacitor must filter the high input ripple current, as a result of pulsing or chopping the input voltage. The MCP16301 input voltage pin is used to supply voltage for the power train and as a source for internal bias. A low equivalent series resistance (ESR), preferably a ceramic capacitor, is recommended. The necessary capacitance is dependent upon the maximum load current and source impedance.
PAGE 19
MCP16301 Size WxLxH (mm) ME3220 15 0.52 0.90 3.2x2.521.0 LPS4414 15 0.440 0.92 4.3x4.3x1.4 LPS6235 15 0.125 2.00 6.0x6.0x3.5 MSS6132 15 0.135 1.56 6.1x6.1x3.2 MSS7341 15 0.057 1.78 7.3x7.3x4.1 ME3220 15 0.520 0.8 2.8x3.2x2.0 XFL2006 15 2.02 0.25 2.0x2.0x0.6 LPS3015 15 0.700 0.61 3.0x3.0x1.4 744028 15 0.750 0.35 2.8x2.8x1.1 744029 15 0.600 0.42 2.8x2.8x1.35 744025 15 0.400 0.900 2.8x2.8x2.8 744031 15 0.255 0.450 3.8x3.8x1.65 744042 15 0.
PAGE 20
MCP16301 5.9 Boost Capacitor The boost capacitor is used to supply current for the internal high side drive circuitry that is above the input voltage. The boost capacitor must store enough energy to completely drive the high side switch on and off. A 0.1 µF X5R or X7R capacitor is recommended for all applications. The boost capacitor maximum voltage is 5.5V, so a 6.3V or 10V rated capacitor is recommended. 5.10 Thermal Calculations The MCP16301 is available in a SOT-23-6 package.
PAGE 21
MCP16301 Bottom Plane is GND MCP16301 Bottom Trace RBOT RTOP 10 Ohm EN C 1 B DB REN VIN VOUT D1 L 2 x CIN GND COUT COUT GND DB 4 BOOST EN 1 CB REN VIN 5 MCP16301 SW 6 VIN COUT 4V to 30V CIN RTOP FB Value CIN 10 µF COUT 2 x 10 µF L 15 µH RTOP 31.2 k RBOT 10 k D1 B140 DB 1N4148 CB 100 nF FIGURE 5-1: 10 Ohm D1 3 GND 2 Component VOUT 3.3V L RBOT *Note: 10 Ohm resistor is used with network analyzer, to measure system gain and phase.
PAGE 22
MCP16301 Bottom Plane is GND MCP16301 RBOT RTOP DB VIN VOUT CB REN L CIN GND GND D1 COUT GND DB 4 BOOST EN 1 CB REN VIN 5 VIN MCP16301 SW 6 COUT 4V to 30V CIN D1 RTOP GND Component Value CIN 1 µF COUT 10 µF L 15 µH RTOP 31.2 k RBOT 10 k D1 PD3S130 CB 100 nF REN 1 M FIGURE 5-2: DS25004B-page 22 VOUT 3.3V L FB 3 2 RBOT MCP16301 SOT-23-6 D2 Recommended Layout, 200 mA Design.  2011-2012 Microchip Technology Inc.
PAGE 23
MCP16301 6.0 TYPICAL APPLICATION CIRCUITS Boost Diode BOOST CB EN L MCP16301 VIN 3.3V VIN 6V to 30V VOUT SW COUT FW Diode CIN GND RTOP FB RBOT Component Value Manufacturer Part Number Comment Yuden® UMK325B7475KM-T Cap. 4.7 µF 50V Ceramic X7R 1210 10% JMK212B7106KG-T Cap. 10 µF 6.3V Ceramic X7R 0805 10% CIN 2 x 4.7 µF Taiyo COUT 2 x 10 µF Taiyo Yuden 15 µH Coilcraft® MSS6132-153ML MSS6132 15 µH Shielded Power Inductor RTOP 31.2 k Panasonic®-ECG ERJ-3EKF3162V Res. 31.
PAGE 24
MCP16301 Boost Diode BOOST CB EN 15V to 30V MCP16301 VIN DZ L VOUT 12V SW VIN COUT FW Diode CIN RTOP FB GND RBOT Component Value Manufacturer Part Number Comment CIN 2 x 4.7 µF Taiyo Yuden UMK325B7475KM-T Cap. 4.7 uF 50V Ceramic X7R 1210 10% COUT 2 x 10 µF Taiyo Yuden JMK212B7106KG-T Cap. Ceramic 10 µF 25V X7R 10% 1206 L 56 µH Coilcraft MSS6132-153ML MSS7341 56 µH Shielded Power Inductor RTOP 140 k Panasonic-ECG ERJ-3EKF3162V Res.
PAGE 25
MCP16301 DZ Boost Diode BOOST CB EN L MCP16301 VIN 12V VOUT SW 2V VIN COUT FW Diode CIN GND RTOP FB RBOT Component Value Manufacturer Part Number Comment CIN 10 µF Taiyo Yuden COUT 22 µF Taiyo Yuden JMK316B7226ML-T L 10 µH Coilcraft MSS4020-103ML 10 µH Shielded Power Inductor RTOP 15 k Panasonic-ECG ERJ-3EKF1502V Res. 15.0K Ohm 1/10W 1% 0603 SMD RBOT 10 k Panasonic-ECG ERJ-3EKF1002V Res. 10.0K Ohm 1/10W 1% 0603 SMD FW Diode PD3S Diodes Inc.
PAGE 26
MCP16301 Boost Diode DZ CZ BOOST RZ CB EN VIN L MCP16301 2.5V VIN 10V to 16V VOUT SW COUT FW Diode CIN RTOP FB GND RBOT Component Value Manufacturer CIN 10 µF Taiyo Yuden COUT 22 µF Taiyo Yuden JMK316B7226ML-T L RTOP RBOT FW Diode Part Number Comment TMK316B7106KL-TD Cap. Ceramic 10 µF 25V X7R 10% 1206 Cap. Ceramic 22 µF 6.3V X7R 1206 12 µH Coilcraft LPS4414-123MLB LPS4414 12 uH Shielded Power Inductor 21.5 k Panasonic-ECG ERJ-3EKF2152V Res. 21.
PAGE 27
MCP16301 Boost Diode EN BOOST CB REN L MCP16301 VIN 4V to 30V VOUT 3.3V SW VIN COUT FW Diode CIN GND RTOP FB RBOT Component Value Manufacturer CIN 1 µF Taiyo Yuden GMK212B7105KG-T Cap. Ceramic 1.0 µF 35V X7R 0805 COUT 10 µF Taiyo Yuden JMK107BJ106MA-T L Part Number Comment Cap. Ceramic 10 µF 6.3V X5R 0603 15 µH Coilcraft LPS3015-153MLB Inductor Power 15 µH 0.61A SMD 31.2 k Panasonic-ECG ERJ-2RKF3162X Res. 31.
PAGE 28
MCP16301 NOTES: DS25004B-page 28  2011-2012 Microchip Technology Inc.
PAGE 29
MCP16301 7.0 PACKAGING INFORMATION 7.1 Package Marking Information 6-Lead SOT-23 Legend: XX...X Y YY WW NNN e3 * Note: Example Part Number Code MCP16301T-I/CHY HTNN MCP16301T-E/CH JYNN HT25 Customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC designator for Matte Tin (Sn) This package is Pb-free.
PAGE 30
MCP16301 6-Lead Plastic Small Outline Transistor (CHY) [SOT-23] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging b 4 N E E1 PIN 1 ID BY LASER MARK 1 2 3 e e1 D A A2 c φ L A1 L1 Units Dimension Limits Number of Pins MILLIMETERS MIN N NOM MAX 6 Pitch e 0.95 BSC Outside Lead Pitch e1 1.90 BSC Overall Height A 0.90 Molded Package Thickness A2 0.89 1.45 1.30 Standoff A1 0.00 0.
PAGE 31
MCP16301 6-Lead Plastic Small Outline Transistor (CHY) [SOT-23] Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2011-2012 Microchip Technology Inc.
PAGE 32
MCP16301 ! @ & " #& ' & G $ ? #J # # & K G && =VV??? " "V G ( & & $ & b 4 N E E1 PIN 1 ID BY LASER MARK 1 2 3 e e1 D A A2 c φ L A1 L1 Z &# " # [ " &# \'"_ ( K # [[ % % \ \ \] K & + ; < ]'&# $ [ $ K & ! ! ; < ]> ` & $ $ K G G ## & $ (( ]> z $& $ $ K G z $& ]> [ & ^ j
PAGE 33
MCP16301 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2011-2012 Microchip Technology Inc.
PAGE 34
MCP16301 NOTES: DS25004B-page 34  2011-2012 Microchip Technology Inc.
PAGE 35
MCP16301 APPENDIX A: REVISION HISTORY Revision B (November 2012) The following is the list of modifications: 1. 2. 3. 4. 5. Added Extended Temperature characteristic. Added 6-lead SOT-23 package version (CH code). Updated the following characterization charts: Figure 2-6, 2-7, 2-8, 2-9, 2-11, 2-12 and 2-13. Updated Section 7.0, Packaging Information. Updated Product Identification System. Revision A (May 2011) • Original Release of this Document.  2011-2012 Microchip Technology Inc.
PAGE 36
MCP16301 NOTES: DS25004B-page 36  2011-2012 Microchip Technology Inc.
PAGE 37
MCP16301 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO.
PAGE 38
MCP16301 NOTES: DS25004B-page 38  2011-2012 Microchip Technology Inc.
PAGE 39
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 40
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