500kHz MSOP-10 Synchronous Step-Down Controller MIC2169A high-eff

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500kHz MSOP-10 Synchronous Step-Down Controller MIC2169A high-eff

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MIC2169A Evaluation Board
500kHz MSOP-10 Synchronous Step-Down Controller
MIC2169A high-efficiency, simple 500kHz synchronous buck control housed small MSOP-10 package. MIC2169A allows compact DC-toDC solutions with minimal external component count cost. output voltage precisely regulated down 0.8V. adaptive N-Channel MOSFET drive scheme allows efficiencies over across wide load range. Note: This evaluation board applications. output evaluation board also available. literature evaluation found MIC2169A data sheet. Data sheets support documentation found Micrel's site www.micrel.com. Requirements MIC2169A evaluation board requires input power source that able deliver greater than 12V. Precautions evaluation board does have reverse polarity protection. Applying negative voltage (J1) terminal damage device. MIC2169A evaluation board tailored input voltage range. input voltage range should exceed 14.5V input. Getting Started Connect external supply VIN. Apply desired input voltage (J1) ground (J2) terminals evaluation board, paying careful attention polarity supply voltage (5VVIN12V). ammeter placed between input supply terminal evaluation board. Ensure that supply voltage monitored terminal. ammeter and/or power lead resistance reduce voltage supplied input. Enabling MIC2169A. MIC2169A enabled soon power supply with voltage range 14.5V connected across (J1) (J2) terminals. Adjusting Output Voltage output voltage MIC2169A evaluation board adjustable. output voltage controlled feedback resistors calculated follows:
VOUT 0.8V evaluation board initially adjusted 1.5V, easily modified removing replacing with value that yields desired output voltage. resistor recommended resistor range.
0.8V 0.8V
Ensure output voltage selected does exceed since tantalum output capacitor 6.3V voltage rating. Typically working voltage tantalum capacitors should never exceed their rated voltage value. When output voltages greater than desired, output capacitor should replaced with where output voltage less than output capacitor voltage rating (tantalum capacitors).
Ordering Information
Part Number MIC2169AYMM MIC2169A Tiny3A Description Evaluation Board Package 10-Pin MSOP 10-Pin MSOP
Micrel Inc. 2180 Fortune Drive Jose, 95131 (408) 944-0800 (408) 474-1000 http://www.micrel.com
2007
M9999-053107-A
Micrel, Inc.
MIC2169A Evaluation Board
+VIN
100µF/20V
SD103BWS 0.1µF/25V SI48O4BDY 2.0µH CDR7D28MN-2R0 (Open 1N5819HW) 330µF 10µF/16V 10µF/6V 0.1µF
1µF/16V
COUT TPSD337M006R0045
1.5V
MIC2169AYMM
Open
OPEN 0.1µF
0.1µF/25V
COMP/EN
Open
1000pF
11.3K
MIC2169A Schematic
2007
M9999-053107-A
Micrel, Inc.
MIC2169A Evaluation Board
Bill Materials
Item C1,C8, C10,C14 C3,C4 C5,C11 R1,R4 R6,R8
Notes: Vishay: www.vishay.com AVX: www.avxcorp.com TDK: www.tdk.com Dioses, Inc.: www.diodes.com Sumida: www.sumida.com Internacional Rectifier: www.irf.com Analog Power: www.analogpowerinc.com Micrel, Inc.: www.micrel.com
Part Number VJ0603Y104KXXAT 594D337X06R3D2T TPSD337M006R0045
Manufacturer Vishay Victramon Vishay/Sprague AVX(2)
Description 0.1µF/25V, 0603 330µF, 6.3V, Tantalum OPEN
Qty.
VJ0603A102KXXAT 08056D106MAT2A C2012X5R0J106M C2012X7R1C105K 0805YD105MAT2A C3225X7R1C106M 594D686X0020D2T TPSD686M020R0100 SD103BWS 1N5819HW CDR7D28MN-2R0 CRCW06031002FKEY3 CRCW06031152FKEY3 CRCW06034R02FKEY3 OPTIONAL CRCW06032R00FKEY3 CRCW06036020FKEY3 CRCW080510R0FKEY3 CRCW06031001FKEY3 Si4804BDY IRF8910 AM4920N MIC2169AYMM
Vishay Victramon(1)
1000pF/25V 10µF/6.3V, 0805 Ceramic Capacitor 1µF/16V, X7R, 0805, Ceramic Capacitor 10µF/16V, X7R, Ceramic Capacitor
TDK(3)
Vishay/Sprague AVX(2) Vishay(1) Diodes Inc.
68µF, Tantalum Schottky Diode OPEN 2.0µH, Inductor OPEN (0603 size)
Sumida(5) Vishay Dale Vishay Dale
10K, 0603, 1/10W, 11.5K, 0603, 1/10W, 4.02, 0603, 1/10W, TRACE BOARD 0603, 1/10W, 602, 0603, 1/10W, 0805 ,1/8W, 0603, 1/10W, Dual Power N-Channel Transistors Step-Down Controller
Vishay Dale(1) Vishay Dale Vishay Dale
Vishay Dale(1)
Vishay Dale
Vishay/Siliconix
International Rectifier(6) Analog Power(7) Micrel, Inc.
2007
M9999-053107-A
Micrel, Inc.
MIC2169A Evaluation Board
Layout
Layer with Silkscreen
Bottom Layer with Silkscreen
2007
M9999-053107-A
Micrel, Inc.
MIC2169A Evaluation Board
MICREL, INC. 2180 FORTUNE DRIVE JOSE, 95131
(408) 944-0800 (408) 474-1000 http://www.micrel.com
information furnished Micrel this data sheet believed accurate reliable. However, responsibility assumed Micrel use. Micrel reserves right change circuitry specifications time without notification customer. Micrel Products designed authorized components life support appliances, devices systems where malfunction product reasonably expected result personal injury. Life support devices systems devices systems that intended surgical implant into body support sustain life, whose failure perform reasonably expected result significant injury user. Purchaser's sale Micrel Products life support appliances, devices systems Purchaser's risk Purchaser agrees fully indemnify Micrel damages resulting from such sale. 2007 Micrel, Incorporated.
2007
M9999-053107-A

500kHz MSOP-10 Synchronous Step-Down Controller MIC2169A high-eff

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