EV2141N-TF-00A 1A Synchronous Step-down Converter with 11µA Iq in a Tiny SOT The Future of Analog IC Technology DESCRIPTION FEATURES The MP2141N is a monolithic, step-down, switch-mode converter with built-in internal power MOSFETs. It achieves 1A continuous output current from a 2.3V-to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V. The Constant-On-Time control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-bycycle current limiting and thermal shutdown. The MP2141N is available in a tiny SOT package and requires a minimal number of readily available standard external components. The MP2141N is ideal for a wide range of applications including high performance DSPs, wireless power, portable and mobile devices, and other low-power systems. ELECTRICAL SPECIFICATION Parameter Input Voltage Output Voltage Output Current Symbol Value Units VIN VOUT IOUT 2.3 – 5.5 1.2 1 V V A Low IQ: 11μA 2.2MHz Switching Frequency EN for Power Sequencing Power Good Only for Fixed Output Version Wide 2.3V-to-5.5V Operating Input Range Output Adjustable from 0.6V Up to 1A Output Current 120mΩ and 80mΩ Internal Power MOSFET Switches Output Discharge 100% Duty Cycle Short-Circuit Protection with Hiccup Mode Stable with Low ESR Output Ceramic Capacitors Available in a Tiny SOT Package APPLICATIONS Wireless/Networking Cards Portable and Mobile Devices Battery Powered Devices Low Voltage I/O System Power All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. Note: VIN<3.3V may need more input capacitor. EV2141N-TF-00A EVALUATION BOARD Board Number MPS IC Number EV2141N-TF-00A MP2141NGTF EV2141N-TF-00A Rev.1.0 www.MonolithicPower.com 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 1 EV2141N –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN TINY SOT EVALUATION BOARD SCHEMATIC Figure 1—Typical Application Circuit for MP2141NGTF Note: VIN<3.3V may need more input capacitor. Figure 2—Typical Application Circuit for MP2141NGTF-XX Note: 1. VIN<3.3V may need more input capacitor; 2. VIN>VOUT for application. EV2141N-TF-00A Rev.1.0 www.MonolithicPower.com 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 2 EV2141N –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN TINY SOT EV2141N-TF-00A BILL OF MATERIALS Table 1. MP2141NGTF Bill of Materials Qty 2 1 1 1 RefDes C1, C2 R1 R2 R3 1 L1 1 U1 0 C1A, C2A Value 10μF 200k 200k 100k Description Ceramic Cap,10V,X5R Film Res.1%, Film Res.1% Film Res.1% Package 0805 0402 0402 0402 1.0μH Inductor, Rdc=45mΩ, Isat=3.8A 2520 Step-down Switcher Tiny SOT Manufacturer Manufacturer P/N muRata GRM21BR61A106KE19L any any any CYNTEC CO. PIFE25201B-1R0MS LTD. MPS MP2141NGTF NS Table 2. MP2141NGTF-XX Bill of Materials Qty 2 1 1 RefDes C1, C2 R1 R2 1 L1 1 0 U1 C1A, C2A Value 10μF 100k 470k Description Ceramic Cap,10V,X5R Film Res.1% Film Res.1% Package 0805 0402 0402 1.0μH Inductor, Rdc=45mΩ, Isat=3.8A 2520 Step-down Switcher Tiny SOT Manufacturer muRata any any CYNTEC CO. LTD. MPS Manufacturer P/N GRM21BR61A106KE19L PIFE25201B-1R0MS MP2141NGTF-XX NS EV2141N-TF-00A Rev.1.0 www.MonolithicPower.com 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 3 EV2141N –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN TINY SOT EVB TEST RESULTS Performance waveforms are tested on the evaluation board. VIN = 5V, VOUT = 1.2V, L =1.0µH, TA = +25ºC, unless otherwise noted. Steady State Steady State Steady State without Load with 1A Load VIN=3.6V, VOUT=3.3V, IOUT=0A,AAM VOUT/AC 10mV/div. VOUT/AC 50mV/div. VOUT/AC 100mV/div. VIN 5V/div. VIN 5V/div. VIN 5V/div. VSW 2V/div. VSW 2V/div. IL 500mA/div. VSW 5V/div. IL 0.2A/div. IL 1A/div. Steady State VIN=3.6V, VOUT=3.3V, IOUT=0.05A, AAM Steady State Steady State VIN=3.6V, VOUT=3.3V, IOUT=0.25A, AAM VIN=3.6V, VOUT=3.3V, IOUT=1A VOUT/AC 20mV/div. VOUT/AC 50mV/div. VIN 5V/div. VIN 5V/div. VIN 5V/div. VSW 2V/div. VSW 2V/div. VOUT/AC 100mV/div. VSW 2V/div. IL 0.2A/div. IL 0.2A/div. VIN Power Up IL 1A/div. VIN Power Up without Load VIN Shut Down with 1A Load without Load VOUT 1V/div. VIN 5V/div. VOUT 1V/div. VIN 5V/div. VOUT 1V/div. VIN 5V/div. VSW 5V/div. VSW 5V/div. VSW 5V/div. IL 1A/div. IL 1A/div. IL 1A/div. EV2141N-TF-00A Rev.1.0 www.MonolithicPower.com 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 4 EV2141N –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN TINY SOT EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 5V, VOUT = 1.2V, L =1.0µH, TA = +25ºC, unless otherwise noted. EV2141N-TF-00A Rev.1.0 www.MonolithicPower.com 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 5 EV2141N –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN TINY SOT EVB TEST RESULTS (continued) Performance waveforms are tested on the evaluation board. VIN = 5V, VOUT = 1.2V, L =1.0µH, TA = +25ºC, unless otherwise noted. EV2141N-TF-00A Rev.1.0 www.MonolithicPower.com 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 6 EV2141N –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN TINY SOT PRINTED CIRCUIT BOARD LAYOUT Figure 3—Top Silk Layer Figure 4—Top Layer Figure 5—Bottom Layer EV2141N-TF-00A Rev.1.0 www.MonolithicPower.com 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 7 EV2141N –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN TINY SOT QUICK START GUIDE(MP2141NGTF ) The output voltage of this board is set externally which can be regulated as low as 0.6V by operating from +2.3V to +5.5V input as the Figure 1. The default output voltage of this board is set to 1.2V. 1. Connect the positive and negative terminals of the load to the VOUT and GND pins, respectively. 2. Preset the power supply output between 2.3V and 5.5V, and then turn off the power supply. 3. Connect the positive and negative terminals of the power supply output to the VIN and GND pins, respectively. 4. Turn the power supply on. The board will automatically start up. 5. The Output Voltage can be changed by varying R2. Choose R1 to be around 40kΩ to 200kΩ. R2 is then given by: R2 R1 Vout 1 0.6 Example: For Vout= 1.8V, R1=200kΩ, R2=100kΩ. QUICK START GUIDE(MP2141NGTF-XX) MP2141NGTF-12(-15,-18,-25,-33) board is fixed ouput voltage with PG function as the Figure 2: 1. Connect the positive and negative terminals of the load to the VOUT and GND pins, respectively. 2. Preset the power supply output between 2.3V and 5.5V, and then turn off the power supply. 3. Connect the positive and negative terminals of the power supply output to the VIN and GND pins, respectively. 4. Turn the power supply on. The board will automatically start up. Fixed output versions are shown in Table 3. Table 3—Fixed output version information Part Number Fixed VOUT (V) MP2141NGTF-12 1.2 MP2141NGTF-15 1.5 MP2141NGTF-18 1.8 MP2141NGTF-25 2.5 MP2141NGTF-33 3.3 NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV2141N-TF-00A Rev.1.0 www.MonolithicPower.com 3/28/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 8