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 2011-2013 Microchip Technology Inc. DS20005004C-page 1

MCP16301/H

Features:

• Up to 96% Typical Efficiency

• Input Voltage Range:

- 4.0V to 30V (MCP16301)

- 4.7V to 36V (MCP16301H)

• 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

• Undervoltage 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/H devices are highly integrated,

high-efficiency, fixed-frequency, step-down DC-DC

converters in a popular 6-pin SOT-23 package that

operates from input voltage sources up to 36V.

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/H devices 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/H devices are offered in a

space-saving SOT-23-6 surface mount package.

Package Type

MCP16301/H

6-Lead SOT-23

BOOST

GND

High-Voltage Input Integrated Switch Step-Down Regulator

Summary of content (38 pages)

PAGE 1
MCP16301/H High-Voltage Input Integrated Switch Step-Down Regulator Features: General Description: • Up to 96% Typical Efficiency • Input Voltage Range: - 4.0V to 30V (MCP16301) - 4.7V to 36V (MCP16301H) • Output Voltage Range: 2.
PAGE 2
MCP16301/H Typical Applications 1N4148 VIN 4.5V to 36V CBOOST L1 100 nF 15 µH Boost VOUT 3.3V @ 600 mA SW VIN CIN 10 µF COUT 2 X 10 µF 40V Schottky Diode EN 31.2 k VFB GND 10 k 1N4148 VIN 6.0V to 36V CBOOST L1 100 nF 22 µH Boost VOUT 5.0V @ 600 mA SW VIN CIN 10 µF 40V Schottky Diode EN COUT 2 X 10 µF 52.3 k VFB GND 10 k 100 VOUT = 5.0V 90 Efficiency (%) 80 70 VOUT = 3.
PAGE 3
MCP16301/H 1.0 ELECTRICAL CHARACTERISTICS † 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 sections of this specification is not intended. Exposure to maximum rating conditions for extended periods may affect device reliability. Absolute Maximum Ratings † VIN, SW ................................................
PAGE 4
MCP16301/H 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. Parameters Sym. Min. Typ. Max.
PAGE 5
MCP16301/H 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/H Note: Unless otherwise indicated, VIN = EN = 12V, COUT = CIN = 2 X 10 µF, L = 15 µH, VOUT = 3.3V, ILOAD = 200 mA, TA = +25°C. 510 VIN = 12V VOUT = 3.3V IOUT = 200 mA 500 495 490 490 485 480 475 470 480 470 460 450 465 440 460 430 420 455 -40 -20 0 20 40 60 80 100 Ambient Temperature (°C) 3 120 FIGURE 2-7: Switching Frequency vs. Temperature; VOUT = 3.3V. 4 Boost Voltage (V) 4.5 5 Switch RDSON vs. VBOOST. 0.802 VIN = 5V IOUT = 200 mA VIN = 12V VOUT = 3.3V IOUT = 100 mA 0.
PAGE 7
MCP16301/H Note: Unless otherwise indicated, VIN = EN = 12V, COUT = CIN = 2 X 10 µF, L = 15 µH, VOUT = 3.3V, ILOAD = 200 mA, TA = +25°C. 5.00 VIN = 12V VOUT = 3.3V IOUT = 100 mA 0.65 0.60 0.55 0.50 0.45 0.40 Minimum Input Voltage (V) Enable Threshold Voltage (V) 0.70 4.70 To Start 4.40 4.10 3.80 To Run 3.50 3.20 -40 -25 -10 FIGURE 2-13: Temperature. VOUT 20 mV/DIV AC coupled 5 20 35 50 65 80 95 110 125 Ambient Temperature (°C) EN Threshold Voltage vs.
PAGE 8
MCP16301/H Note: Unless otherwise indicated, VIN = EN = 12V, COUT = CIN = 2 X 10 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 2V/DIV 10 µs/DIV FIGURE 2-20: DS20005004C-page 8 Line Transient Response.  2011-2013 Microchip Technology Inc.
PAGE 9
MCP16301/H 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE MCP16301/H 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/H NOTES: DS20005004C-page 10  2011-2013 Microchip Technology Inc.
PAGE 11
MCP16301/H 4.0 DETAILED DESCRIPTION 4.1 Device Overview The MCP16301/H devices are high-input voltage step-down regulators, 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/H VIN BG REF CIN VOUT VREG Boost Pre Charge SS OTEMP VREF RTOP + Amp - FB RCOMP - + - HS Drive SW Schottky Diode PWM Latch C OUT R Precharge Overtemp 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/H Block Diagram. Functional Description STEP-DOWN OR BUCK CONVERTER maintain voltage regulation.
PAGE 13
MCP16301/H FIGURE 4-2: 4.2.2 Step-Down Converter. PEAK CURRENT MODE CONTROL The MCP16301/H devices integrate 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 to the output of the integrated error voltage.
PAGE 14
MCP16301/H Boost Diode C1 VZ = 5.1V BOOST RSH CB EN VIN L MCP16301/H 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 2V VIN 12V VOUT MCP16301/H SW VIN 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/H To calculate the shunt resistance, the maximum IBOOST and IZ current are used at the minimum input voltage (Equation 4-2). EQUATION 4-2: SHUNT RESISTANCE V INMIN – V Z R SH = -----------------------------I Boost + I Z VZ and IZ can be found on the Zener diode manufacturer’s data sheet (typical IZ = 1 mA). Boost Diode VZ = 7.5V BOOST CB EN L VIN 12V VIN 15V to 36V VOUT MCP16301/H SW COUT FW Diode CIN RTOP FB GND RBOT Boost Diode BOOST VZ = 7.
PAGE 16
MCP16301/H NOTES: DS20005004C-page 16  2011-2013 Microchip Technology Inc.
PAGE 17
MCP16301/H 5.0 APPLICATION INFORMATION 5.1 Typical Applications The MCP16301/H step-down converters operate over a wide input voltage range, up to 36V 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.
PAGE 18
MCP16301/H 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 input voltage pin of the MCP16301/H devices 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/H Size WxLxH (mm) ME3220 15 0.52 0.90 3.2x2.5x2.0 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 Part Number Value (µH) ISAT (A) MCP16301/H RECOMMENDED 3.3V INDUCTORS DCR () TABLE 5-3: Coilcraft MSS7341 15 0.057 1.78 7.3x7.3x4.1 ME3220 15 0.520 0.8 2.8x3.2x2.0 LPS3015 15 0.700 0.61 3.0x3.0x1.4 5.
PAGE 20
MCP16301/H For low boost voltage applications, a small Schottky diode with the appropriately rated voltage can be used to lower the forward drop, increasing the boost supply for gate drive. EXAMPLE 5-5: VIN = 10V VOUT = 5.0V IOUT = 0.4A Efficiency = 90% 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.
PAGE 21
MCP16301/H Bottom Plane is GND MCP16301/H 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 VOUT 3.3V L 5 MCP16301/H SW 6 VIN COUT 4V to 30V CIN D1 RTOP FB 3 GND 2 Component 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 RBOT *Note: The 10 resistor is used with network analyzer, to measure system gain and phase.
PAGE 22
MCP16301/H Bottom Plane is GND MCP16301/H 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/H 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: DS20005004C-page 22 VOUT 3.3V L FB 3 2 RBOT MCP16301/H SOT-23-6 D2 Recommended Layout, 200 mA Design.  2011-2013 Microchip Technology Inc.
PAGE 23
MCP16301/H 6.0 TYPICAL APPLICATION CIRCUITS Boost Diode BOOST CB EN L MCP16301/H VIN SW 3.3V VIN 6V to 30V VOUT COUT FW Diode CIN GND RTOP FB RBOT Component Value Manufacturer CIN 2 x 4.7 µF Taiyo Yuden Co., Ltd. UMK325B7475KM-T Cap. 4.7 µF 50V Ceramic X7R 1210 10% COUT 2 x 10 µF Taiyo Yuden Co., Ltd. JMK212B7106KG-T Cap. 10 µF 6.3V Ceramic X7R 0805 10% 15 µH Coilcraft L Part Number MSS6132-153ML Comment MSS6132 15 µH Shielded Power Inductor RTOP 31.
PAGE 24
MCP16301/H Boost Diode BOOST CB EN 15V to 30V VIN DZ L MCP16301/H 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 Co., Ltd. UMK325B7475KM-T Cap. 4.7 uF 50V Ceramic X7R 1210 10% COUT 2 x 10 µF Taiyo Yuden Co., Ltd. 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/H DZ Boost Diode BOOST CB EN VIN L VOUT MCP16301/H SW 12V 2V VIN COUT FW Diode CIN GND RTOP FB RBOT Component Value Manufacturer Part Number Comment CIN 10 µF Taiyo Yuden Co., Ltd. COUT 22 µF Taiyo Yuden Co., Ltd. JMK316B7226ML-T L 10 µH Coilcraft MSS4020-103ML 10 µH Shielded Power Inductor EMK316B7106KL-TD Cap. Ceramic 10 µF 16V X7R 10% 1206 Cap. Ceramic 22 µF 6.3V X7R 1206 RTOP 15 k Panasonic-ECG ERJ-3EKF1502V Res. 15.
PAGE 26
MCP16301/H Boost Diode DZ CZ BOOST RZ CB EN VIN L 2.5V VIN 10V to 16V VOUT MCP16301/H SW COUT FW Diode CIN RTOP FB GND RBOT Component Value Manufacturer CIN 10 µF Taiyo Yuden Co., Ltd. COUT 22 µF Taiyo Yuden Co., Ltd. JMK316B7226ML-T L RTOP 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 µH Shielded Power Inductor 21.5 k Panasonic-ECG ERJ-3EKF2152V Res. 21.
PAGE 27
MCP16301/H Boost Diode EN BOOST CB REN L MCP16301/H 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 Co., Ltd. GMK212B7105KG-T Cap. Ceramic 1.0 µF 35V X7R 0805 COUT 10 µF Taiyo Yuden Co., Ltd. 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/H NOTES: DS20005004C-page 28  2011-2013 Microchip Technology Inc.
PAGE 29
MCP16301/H 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 MCP16301HT-E/CH AAANY MCP16301HT-I/CH AAAPY 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/H / $ !$ % $ 0 $$ ,33... 3 " .
PAGE 31
MCP16301/H Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2011-2013 Microchip Technology Inc.
PAGE 32
MCP16301/H 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.
PAGE 33
MCP16301/H 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  2011-2013 Microchip Technology Inc.
PAGE 34
MCP16301/H NOTES: DS20005004C-page 34  2011-2013 Microchip Technology Inc.
PAGE 35
MCP16301/H APPENDIX A: REVISION HISTORY Revision C (November 2013) The following is the list of modifications: 1. 2. 3. Added new device to the family (MCP16301H) and related information throughout the document. Added package markings and drawings for the MCP16301H device. Updated the Product Identification System section. 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).
PAGE 36
MCP16301/H 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 37
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 38
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