MPM3822C

MPM3822C MPS | Alldatasheet

Document overview

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Technical content

2.75 - 6V, 2A, Ultra-Small and Ultra-Low Noise Power Module MPM3822C Rev. 1.0 www.MonolithicPower.com 1 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved.

DESCRIPTION

The MPM3822C is a synchronous, step-down, power module with an integrated inductor. The MPM3822C achieves 2A of continuous output current from a 2.75V to 6V input voltage range with excellent load and line regulation. The MPM3822C works in forced continuous conduction mode (CCM) and has a voltage ripple less than 10mV with one output capacitor, making it suitable for optical modules, FGPA, ASIC, and other applications requiring low ripple noise. The output voltage can be regulated as low as 0.6V. Only FB resistors, input capacitors, and output capacitors are needed to complete the design. The constant-on-time control (COT) scheme provides fast transient response, high efficiency, and easy loop stabilization. Full protection features include cycle-by-cycle current limiting and thermal shutdown. The MPM3822C requires a minimal number of readily available, standard, external components and is available in an ultra-small QFN-18 (2.5mmx3.5mmx1.6mm) package.

FEATURES

 Wide 2.75V to 6V Operating Input Range  Adjustable Output from 0.6V  Low Radiated Emissions (EMI) Complies with EN55022 Class B Standard  Up to 2A Continuous Output Current  100% Duty Cycle in Dropout  Forced Continuous Conduction Mode (CCM)  Enable (EN) and Power Good (PG) for Power Sequencing  Cycle-by-Cycle Over-Current Protection (OCP)  Short-Circuit Protection (SCP) with Hiccup Mode  Only Four External Components Requires  Available in a QFN-18 (2.5mmx3.5mmx 1.6mm) Package

APPLICATIONS

 FPGA, ASIC, DSP Power  Optical Modules  LDO Replacements  Power for Portable Products  Storage (SSD/HDD)  Space-Limited Applications All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks o f Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION Efficiency vs. Output Current VIN = 5V 100 00 . 511 . 52 EFFICI ENCY (%) OUTPUT CURRENT (A) Vout=1.2V Vout=1.8V Vout=2.5V Vout=3.3V

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 2 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved.

ORDERING INFORMATION

Part Number* Package Top Marking MPM3822CGRH QFN-18 (2.5mmx3.5mmx1.6mm) See Below * For Tape & Reel, add suffix –Z (e.g.: MPM3822CGRH–Z). TOP MARKING BFV: Product code of MPM3822CGRH Y: Year code WW: Week code LLL: Lot number PACKAGE REFERENCE TOP VIEW PGND SW FB OUT_S EN SW SW IN PG OUT OUT 1516 DNC DNC AGND 1 14 IN NC SW OUT QFN-18 (2.5mmx3.5mmx1.6mm)

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 3 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. PIN FUNCTIONS Pin # Name Description 1 AGND Analog ground for the internal control circuit. 2 FB Feedback. Use an external resistor divider from the output to GND tapped to FB to set the output voltage. 3 OUT_S Output voltage sense. 4 EN On/off control. 5 - 7, 15 SW Switch output. 8 - 10 OUT Power output. 11 NC No connection. Float NC or connect NC to GND. 12 PG Power good indicator. The output of PG is an open drain with an internal pull-up resistor to IN. PG is pulled up to IN when the FB voltage is within 10% of the regulation level; otherwise, PG is low. 13, 14 IN Supply voltage to internal control circuitry. 16 PGND Power ground. 17,18 DNC No connection. Leave DNC floating. ABSOLUTE MAXIMUM RATINGS (1) to 6.5V (10V for <10ns) Continuous power dissipation (T A = +25°C) (2)(4) Recommended Operating Conditions (3) Thermal Resistance θJA θJC NOTES: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature T J (MAX), the junction-to- ambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by P D (MAX) = (T J (MAX)-TA)/θJA. Exceeding the maximum allowable powe r dissipation produces an excessive die temperature, causing the regulator to go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on EVM3822C-RH-00A, 2-layer PCB. 5) The value of θ JA given in this table is only valid for comparison with other packages and cannot be used for design purposes. These values were calculated in accordance with JESD51-7 and simulated on a specified JEDEC board. They do not represent the performance obtained in an actual application.

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 4 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN = 3.6V, TJ = -40°C to +125°C, typical value is tested at T J = +25°C. The limit over temperature is guaranteed by characterization, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Feedback voltage V FB 2.75V ≤ VIN ≤ 6V 591 600 609 mV Feedback current I FB V FB = 0.6V 10 nA Inductor L value L Inductance value at 1MHz 1 μH Dropout resistance R DR 100% on duty 130 m Ω Switch leakage VEN = 0V, VIN = 6V, VSW = 0V and 6V, TJ = 25°C 0 2 μA P-FET peak current limit 2.8 5.6 A N-FET valley current limit (6) 1.5 A On time T ON VIN = 5V, VOUT = 1.2V 185 ns VIN = 3.6V, VOUT = 1.2V 250 Switching frequency F s V OUT = 1.2V, ILOAD = 1A 1150 kHz Minimum off time T MIN-OFF 230 ns Minimum on time (6) T MIN-On 80 ns Soft-start time (6) T SS-ON 1.3 ms Soft-stop time T SS-OFF 1.7 ms Power good upper trip threshold FB voltage in respect to the regulation +10 % Power good lower trip threshold -10 % Power good delay 100 μs Power good sink current capability VPG_LO Sink 1mA 0.4 V Power good logic high voltage V PG_HI V IN = 5V, VFB = 0.6V 4 V Power good internal pull-up resistor RPG 440 k Ω Under-voltage lockout threshold rising 2.3 2.5 2.75 V Under-voltage lockout threshold hysteresis 400 mV EN input logic low voltage 0.3 V EN input logic high voltage 1.2 V EN input current VEN = 2V 2 μA VEN = 0V 0 μA Supply current (shutdown) V EN = 0V, TJ = 25°C 0 1 μA Supply current (quiescent) VEN = 2V, VFB = 0.63V, VIN = 3.6V 500 μA Thermal shutdown (7) 160 °C Thermal hysteresis (7) 30 °C

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 5 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. ELECTRICAL CHARACTERISTICS (continued) VIN = 3.6V, TJ = -40°C to +125°C, typical value is tested at T J = +25°C. The limit over temperature is guaranteed by characterization, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Converter System (6) Output voltage range 0.6 6 V Recommended input capacitance CIN1 VIN = 3.6V, VOUT = 1.2V, IOUT = 2A 4.7 22 μF Output capacitance C OUT1 VIN = 3.6V, VOUT = 1.2V, IOUT = 2A 10 22 100 μF Output ripple VIN = 3.6V, VOUT = 1.2V, COUT = 22μF, IOUT = 2A 5 mV Efficiency VIN = 3.6V, VOUT = 1.2V, IOUT = 2A 82 % Load transient peak-to-peak voltage VP2P1 VIN = 3.6V, VOUT = 1.2V, COUT = 22μF, IOUT = 0 to 2A @ 1A/μs 100 mV NOTES: 6) Derived from engineering sample test, not tested in production. 7) Derived from characterization test, not tested in production.

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 6 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS VIN = 5V, VOUT = 1.2V, COUT = 22µF, TA = 25°C, unless otherwise noted. Efficiency vs. Output Current VIN = 5V Efficiency vs. Output Current VIN = 3.6V 100 00 . 511 . 52 EFFICI ENC Y (%) OUTPUT CURRENT (A) Vout=1.2V Vout=1.8V Vout=2.5V Vout=3.3V 100 00 . 511 . 52 EFFICI ENCY (%) OUTPUT CURRENT (A) Vout=1.2V Vout=1.8V Vout=2.5V Load Regulation vs. Output Current Line Regulation vs. VIN -0.5 -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 0.5 00 . 511 . 522 . 5 LOAD REGULATION (%) OUTPUT CURRENT (A) VIN=6V VIN=5V VIN=2.7V -0.2 -0.1 0.1 0.2 0.3 0.4 LINE REGULATION (%) VIN (V) Iout=0A Iout=1A Iout=2A Quiescent Current vs. V IN Shutdown Current vs. VIN VIN = 5V 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 QUIESCENT CURRENT (mA) VIN (V) 0.2 0.4 0.6 0.8 SHUTDOWN CURRENT (µA) VIN (V)

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 7 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 5V, VOUT = 1.2V, COUT = 22µF, TA = 25°C, unless otherwise noted. Output Current vs. Ambient Temperature TJ < 125°C Radiated Emission IOUT = 2A, tested on EVM3822C-RH-00A 0.5 1.5 2.5 20 40 60 80 100 120 OUTPUT CURRENT (A) AMBIENT TEMPERATURE (°C) Vout=1.2V Vout=3.3V UVLO VIN Rising and Falling Threshold vs. Temperature EN Rising and Falling Threshold vs. Temperature 0.5 1.5 2.5 -50 0 50 100 150 UVLO VIN RISING AND FALLING THRESHOLD (V) TEMPERATURE (°C) Rising Falling 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 -50 0 50 100 150 EN RISING AND FALLING THRESHOLD (V) TEMPERATURE (°C) Rising Falling Power Good UV Threshold vs. Temperature Power Good OV Threshold vs. Temperature 100 200 300 400 500 600 700 800 -60 -10 40 90 140 POWER GOOD UV THRESHOLD (mV) TEMPERATURE (°C) Rising Falling 100 200 300 400 500 600 700 800 -60 -10 40 90 140 POWER GOOD OV THRESHOLD (mV) TEMPERATURE (°C) Rising Falling

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 8 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 3.6V, VOUT = 1.2V, Co = 22µF, TA = 25°C, unless otherwise noted. Steady State IOUT = 0A Steady State IOUT = 2A CH1: VOUT/AC 20mV/div. CH2: VIN 5V/div. CH3: VSW 5V/div. CH4: IL 1A/div. CH1: VOUT/AC 20mV/div. CH2: VIN 5V/div. CH3: VSW 5V/div. CH4: IL 2A/div. 1µs/div. 1μs/div. V IN Start-Up IOUT = 0A VIN Start-Up IOUT = 2A CH1: VOUT 1V/div. CH2: VIN 5V/div. CH3: VSW 5V/div. CH4: IL 2A/div. CH1: VOUT 1V/div. CH2: VIN 5V/div. CH3: VSW 5V/div. CH4: IL 2A/div. 2ms/div. 2ms/div. V IN Shutdown IOUT = 0A VIN Shutdown IOUT = 2A CH1: VOUT 1V/div. CH2: VIN 5V/div. CH3: VSW 5V/div. CH4: IL 1A/div. CH1: VOUT 1V/div. CH2: VIN 5V/div. CH3: VSW 5V/div. CH4: IL 2A/div. 40ms/div. 10ms/div.

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 9 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 3.6V, VOUT = 1.2V, Co = 22µF, TA = 25°C, unless otherwise noted. EN On IOUT = 0A EN On IOUT = 2A CH1: VOUT 1V/div. CH2: VEN 2V/div. CH3: VSW 5V/div. CH4: IL 1A/div. CH1: VOUT 1V/div. CH2: VEN 2V/div. CH3: VSW 5V/div. CH4: IL 2A/div. 4ms/div. 4ms/div. EN Off IOUT = 0A EN Off IOUT = 2A CH1: VOUT 1V/div. CH2: VEN 2V/div. CH3: VSW 5V/div. CH4: IL 1A/div. CH1: VOUT 1V/div. CH2: VEN 2V/div. CH3: VSW 5V/div. CH4: IL 2A/div. 4ms/div. 4ms/div. Power Good On IOUT = 0A Power Good On IOUT = 2A CH1: VOUT 1V/div. CH2: VPG 5V/div. CH3: VSW 5V/div. CH4: IL 1A/div. CH1: VOUT 1V/div. CH2: VPG 5V/div. CH3: VSW 5V/div. CH4: IL 2A/div. 4ms/div. 4ms/div.

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 10 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 3.6V, VOUT = 1.2V, Co = 22µF, TA = 25°C, unless otherwise noted. Power Good Off IOUT = 0A Power Good Off IOUT = 2A CH1: VOUT 1V/div. CH2: VPG 5V/div. CH3: VSW 5V/div. CH4: IL 1A/div. CH1: VOUT 1V/div. CH2: VPG 5V/div. CH3: VSW 5V/div. CH4: IL 2A/div. 100ms/div. 100ms/div. Load Transient IOUT = 0 - 2A, 2.5A/μs Load Transient IOUT = 1 - 2A, 2.5A/μs CH1: VOUT/AC 50mV/div. CH4: I OUT 1A/div. CH1: VOUT/AC 50mV/div. CH4: IOUT 1A/div. 1ms/div. 1ms/div. Short Entry Short Steady State CH1: VOUT 1V/div. CH2: VPG 5V/div. CH3: VSW 5V/div. CH4: IL 5A/div. CH1: VOUT 1V/div. CH2: VPG 5V/div. CH3: VSW 5V/div. CH4: IL 5A/div. 100μs/div. 1ms/div.

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 11 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 3.6V, VOUT = 1.2V, Co = 22µF, TA = 25°C, unless otherwise noted. Short Recovery IOUT = 0A CH1: VOUT 1V/div. CH2: VPG 5V/div. CH3: VSW 5V/div. CH4: IL 5A/div. 1ms/div.

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 12 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. BLOCK DIAGRAM Figure 1: Functional Block Diagram

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 13 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. OPERATION The MPM3822C comes in a small surface- mounted QFN-18 (2.5mmx3.5mmx1.6mm) package. The MPM3822C’s integrated inductor simplifies the schematic and layout design. Only FB resistors, input capacitors, and output capacitors are needed to complete the design. The MPM3822C uses constant-on-time (COT) control with input voltage feed-forward to stabilize the switching frequency over the full input range. Constant-On-Time Control (COT) Compared to fixed-frequency pulse-width modulation (PWM) control, COT control offers the advantage of a simpler control loop and faster transient response. By using input voltage feed-forward, the MPM3822C maintains a nearly constant switching frequency across the input and output voltage ranges. The on time of the switching pulse can be estimated with Equation (1): OUT ON IN To prevent inductor current runaway during the load transition, the MPM3822C fixes the minimum off time at 230ns. This minimum off- time limit does not affect operation during steady state. Forced PWM Operation The MPM3822C works in continuous current mode (CCM) to achieve a smaller V OUT ripple, load regulation, and load transient in the full load range. Enable (EN) If the input voltage is greater than the under- voltage lockout (UVLO) threshold (typically 2.5V), the MPM3822C can be enabled by pulling EN above 1.2V. Leave EN floating or pull EN down to ground to disable the MPM3822C. There is an internal 1M Ω resistor from EN to ground. Soft Start/Stop The MPM3822C has a built-in soft start that ramps up the output voltage at a controlled slew rate to prevent overshoots during start-up. The soft-start time is about 1.3ms, typically. When disabled, the MPM3822C ramps down the internal reference, so the load can discharge the output linearly. The soft-stop time is 1.7ms, typically. Power Good Indicator (PG) The MPM3822C has an open drain with a 440kΩ pull-up resistor pin for power good indication (PG). When FB is within ±10% of the regulation voltage (0.6V), PG is pulled up to IN by the internal resistor. If the FB voltage is out of the ±10% window, PG is pulled down to ground by an internal MOSFET. The MOSFET has a maximum R DS(ON) of less than 100Ω. Current Limit The MPM3822C high-side switch has a typical 5.6A current limit, and the low-side switch has a 1.5A current limit. When the high-side switch reaches its current limit, the high-side is turned off, and the low-side is turned on. When the current drops to the valley current-limit threshold, the MPM3822C turns on the high- side again. If the high-side reaches the peak current limit and the low-side reaches the valley current limit in every cycle for 100µs, the MPM3822C remains at the hiccup threshold until the current decreases. This prevents the inductor current from continuing to build and damaging components. Short Circuit and Recovery If the output voltage is shorted to GND, the current limit is triggered. If the current limit is triggered every cycle for 100µs, the MPM3822C enters hiccup mode and disables the output power stage. The MPM3822C discharges the soft-start capacitor, and then attempts to soft start again automatically. If the short-circuit condition still remains after the soft start ends, the MPM3822C repeats this operation cycle until the short circuit is removed and the output rises back to the regulation level.

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 14 11/30/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved.

APPLICATION INFORMATION

Setting the Output Voltage The external resistor divider is used to set the output voltage. The feedback resistor (R1) cannot be too large or too small considering the trade-off for stability and dynamics. There is no strict requirement for the feedback resistor. R2 can be calculated with Equation (2): out R1R2 V 10.6 (2) The feedback circuit is shown in Figure 2. Figure 2: Feedback Network Table 1 lists the recommended resistor values for common output voltages. Table 1: Resistor Values for Common Output Voltages VOUT (V) R1 (k Ω) R2 (k Ω) Selecting the Input Capacitor The input current to the step-down converter is discontinuous and therefore requires a capacitor to supply AC current while maintaining the DC input voltage. For optimal performance, use low ESR capacitors. Ceramic capacitors with X5R or X7R dielectrics are highly recommended because of their low ESR and small temperature coefficients. For most applications, a 22µF capacitor is sufficient Since the input capacitor absorbs the input switching current, it requires an adequate ripple current rating. The RMS current in the input capacitor can be estimated with Equation (3):   IN OUT IN OUTLOAD1C V V1V VII (3) The worst-case condition occurs at V IN = 2VOUT, shown in Equation (4): II LOAD 1C  (4) For simplification, choose an input capacitor with an RMS current rating greater than half of the maximum load current. The input capacitor can be electrolytic, tantalum, or ceramic. When using electrolytic or tantalum capacitors, add a small, high-quality ceramic capacitor (i.e.: 0.1 μF) as close to the IC as possible. When using ceramic capacitors, ensure that they have enough capacitance to provide a sufficient charge to prevent an excessive voltage ripple at the input. The input voltage ripple caused by the capacitance can be estimated with Equation (5): LOAD OUT OUT IN INSI N IV VV1 fC 1V V (5) Selecting the Output Capacitor An output capacitor (C2) is required to maintain the DC output voltage. Low ESR ceramic capacitors can be used to keep the output ripple low. Generally, a 22 μF output ceramic capacitor is sufficient for most applications. In higher output voltage conditions, a 47μF capacitor may be required for a stable system. When using ceramic capacitors, the impedance at the switching frequency is dominated by the capacitance. The output voltage ripple is caused mainly by the capacitance. For simplification, the output voltage ripple can be estimated with Equation (6): OUT OUT OUT 2 INS1 VV∆V1 V8f L C 2 (6)

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE MPM3822C Rev. 1.0 www.MonolithicPower.com 15 11/30/2018 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved. When using tantalum or electrolytic capacitors, the ESR dominates the impedance at the switching frequency. For simplification, the output ripple can be approximated with Equation (7): OUT OUT OUT ESR INS1 VV∆V1 R fL V Where L1 is a 1μH integrated inductor. The characteristics of the output capacitor affect the stability of the regulation system. PCB Layout Guidelines Efficient layout of the switching power supplies is critical for stable operation, especially for the high switching converter. If the layout is not done carefully, the regulator could show poor line or load regulation or stability issues. For best results, refer to Figure 3 and follow the guidelines below. 1. Place the 0805 size ceramic input capacitor as close to the IC pins as possible. 2. Connect the two ends of the ceramic capacitor to VIN and PGND directly. 3. Add copper to SW for power dissipation. 4. Place the external feedback resistor next to FB. Top Layer Bottom Layer Figure 3: Recommended Layout

MPM3822C – 6V, 2A, ULTRA-SMALL STEP-DOWN MODULE NOTICE: The information in this document is subject to change wi thout notice. Please contact MP S 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. MPM3822C Rev. 1.0 www.MonolithicPower.com 17 11/30/2018 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2018 MPS. All Rights Reserved.

PACKAGE INFORMATION

QFN-18 (2.5mmx3.5mmx1.6mm)