MIC5364-2.8YMT-TR

MIC5363/4 High-PSRR, 300 mA, µCap LDO Features General Description • • • • • • • • • • • The MIC5363/4 is an advanced, 300 mA LDO ideal for powering general purpose portable devices requiring a high power supply rejection ratio (PSRR). The MIC5363/4 integrates a high-performance, 300 mA LDO into a tiny 1.2 mm x 1.2 mm Thin DFN package. 2.5V to 5.5V Input Voltage Range 300 mA Output Current LDOs High Output Accuracy: ±2% Low Quiescent Current: Typically 38 µA Stable with 1 µF Ceramic Output Capacitors High PSRR (70 dB @1 kHz) Low Dropout Voltage: 225 mV at 300 mA Thermal Shutdown Protection Current Limit Protection Active Output Discharge Circuit (MIC5364) 6-Pin 1.2 mm × 1.2 mm Thin DFN Package Applications • • • • Mobile Phones GPS, PMP, and DSC Battery Powered Electronics Moise Sensitive Applications  2021 Microchip Technology Inc. and its subsidiaries The MIC5363/4 is designed to reject input noise and provide a low output noise regulator with fast transient response to respond to any load change quickly. The MIC5364 also incorporates an active discharge feature that switches a 30Ω NFET from VOUT to GND to discharge output capacitors when the part is disabled. The MIC5363/4 is available in fixed output voltages in lead-free (RoHS-compliant) 6-Pin 1.2 mm x 1.2 mm Thin DFN leadless package. Package Type MIC5363/4 TDFN-6 (MT) (Top View) DS20006604A-page 1 MIC5363/4 Typical Application Circuit Camera DSP Power Supply Circuit Functional Block Diagrams MIC5363 MIC5364 DS20006604A-page 2  2021 Microchip Technology Inc. and its subsidiaries MIC5363/4 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Supply Voltage (VIN) .................................................................................................................................... –0.3V to +6V Enable Voltage (VEN) .......................................................................................................................... –0.3V to VIN +0.3V Power Dissipation (PD), Note 1.............................................................................................................. Internally Limited ESD Rating, Note 2.................................................................................................................................................... 2 kV Operating Ratings ‡ Supply Voltage (VIN) ................................................................................................................................. +2.5V to +5.5V Enable Voltage (VEN) ..........................................................................................................................................0V to VIN † Notice: Stresses above those listed under “Absolute 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. ‡ Notice: The device is not guaranteed to function outside its operating ratings. Note 1: The maximum allowable power dissipation of any TA (ambient temperature) is PD(MAX) = (TJ(MAX) – TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 2: Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5 kΩ in series with 100 pF. ELECTRICAL CHARACTERISTICS Electrical Characteristics: VIN = VEN = VOUT + 1V; if VOUT ≤ 1.5V; IOUT = 100µA; COUT = 1 µF; TJ = +25°C; Bold values are valid for –40°C to +125°C unless noted. (Note 1). Parameters Symbol Min. Typ. Max. –2.0 — +2.0 –3.0 — +3.0 Units % Output Voltage Accuracy VOUT Line Regulation, Note 2 ΔVOUT/ (VOUT x ΔVIN) — 0.02 0.2 %/V Load Regulation ΔVOUT/VOUT — 0.3 0.7 % Dropout Voltage, Note 3 Ground Pin Current VDO IGND — 35 65 — 225 380 — 55 100 — 300 600 — 38 53 — 55 70 Conditions Variation from nominal VOUT Variation from nominal VOUT; –40°C to +125°C VIN = Max (VOUT + 1V, 2.5V) to 5.5V, IOUT = 100 µA IOUT = 100 µA to 300 mA IOUT = 50 mA; VOUT ≥ 2.8V mV IOUT = 50 mA; VOUT ≥ 2.8V IOUT = 50 mA; 2.5V ≤ VOUT < 2.8V IOUT = 50 mA; 2.5V ≤ VOUT < 2.8V µA VEN = High; IOUT = 0 mA VEN = High; IOUT = 300 mA Shutdown Current ISHDN — 0.1 1 µA VEN = 0V Supply Ripple Rejection PSRR — 70 — dB f = 1 kHz; COUT = 1 µF Current Limit ILIM 325 520 680 mA VOUT = 0V Output Voltage Noise eN — 200 — Auto-Discharge NFET Resistance RDSCG — 30 — VIL — — 0.2 VIH 1.2 — — µVRMS COUT = 1µF, 10 Hz to 100 kHz Ω Enable Inputs (EN1/EN2) Enable Input Voltage  2021 Microchip Technology Inc. and its subsidiaries V MIC5364 Only; VEN = 0V, VIN = 3.6V, IOUT = –3 mA Logic Low Logic High DS20006604A-page 3 MIC5363/4 ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Characteristics: VIN = VEN = VOUT + 1V; if VOUT ≤ 1.5V; IOUT = 100µA; COUT = 1 µF; TJ = +25°C; Bold values are valid for –40°C to +125°C unless noted. (Note 1). Parameters Enable Input Current Turn-On Time Note 1: 2: 3: Symbol Min. Typ. Max. IIL — 0.01 1 IIH — 0.01 1 tON — 60 150 Units µA µs Conditions VIL ≤ 0.2V VIH ≥ 1.2V COUT = 1 µF Specification for packaged product only. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value. TEMPERATURE SPECIFICATIONS Parameters Symbol Min. Typ. Max. Units Conditions Junction Temperature Range TJ –40 — +125 °C Storage Temperature Range TS –65 — +150 °C — Lead Temperature — — — +260 °C Soldering, 10 sec. JA — 173 — °C/W Temperature Ranges Note 1 Package Thermal Resistances Thermal Resistance, TDFN-6 Note 1: — The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the thermal resistance from junction to air (i.e., TA, TJ, JA). Exceeding the maximum allowable power dissipation will cause the device operating junction temperature to exceed the maximum +125°C rating. Sustained junction temperatures above +125°C can impact the device reliability. DS20006604A-page 4  2021 Microchip Technology Inc. and its subsidiaries MIC5363/4 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. 120 2.82 VIN = 3.8V 100μA OUTPUT VOLTAGE (V) PSRR (dB) 100 80 60 200mA 100mA 40 VIN = VEN = 3.8V 20 VOUT = 2.8V CIN = COUT = 1μF 2.81 2.80 2.79 VOUT = 2.8V COUT = 1μF 0 2.78 10 100 1K 10K 100K 1M 0 50 FREQUENCY (Hz) Power Supply Rejection FIGURE 2-4: Current. 3.40 70 3.20 60 3.00 GROUND CURRENT (μA) OUTPUT VOLTAGE (V) FIGURE 2-1: Ratio. 100μA 2.80 2.60 300mA 2.40 VOUT = 2.8V 2.20 CIN = COUT = 1μF 150 200 250 300 Output Voltage vs.Output 300mA 50 40 30 NO LOAD 20 VOUT = 2.8V 10 CIN = COUT = 1μF 2.00 0 2.5 3 3.5 4 4.5 5 5.5 2.5 3 3.5 INPUT VOLTAGE (V) 4 4.5 5 5.5 INPUT VOLTAGE (V) FIGURE 2-2: Output Voltage vs. Input Voltage (VOUT = 2.8V). FIGURE 2-5: Voltage. Ground Current vs. Input 120 GROUND CURRENT (μA) 1.30 OUTPUT VOLTAGE (V) 100 OUTPUT CURRENT (mA) 1.26 100μA 1.22 1.18 300mA 1.14 V OUT = 1.2V 100 80 60 40 VIN = 3.8V 20 VOUT = 2.8V CIN = COUT = 1μF CIN = COUT = 1μF 1.10 0 2.5 3 3.5 4 4.5 5 5.5 0 INPUT VOLTAGE (V) FIGURE 2-3: Output Voltage vs. Input Voltage (VOUT = 1.2V).  2021 Microchip Technology Inc. and its subsidiaries 50 100 150 200 250 300 OUTPUT CURRENT (mA) FIGURE 2-6: Current. Ground Current vs. Output DS20006604A-page 5 MIC5363/4 10.000 240 200 180 1.000 160 NOISE uV/¥Hz OUTPUT VOLTAGE (V) 220 140 120 0.100 100 80 60 VIN = 4.5V VOUT = 2.8V COUT = 1μF IOUT = 51mA 0.010 40 VOUT = 2.8V 20 CIN = COUT = 1μF NOISE (10Hz - 100kHz) = 192μV 0 0 50 100 150 200 250 300 OUTPUT CURRENT (mA) FIGURE 2-7: Current. 0.001 10 100 1K 10K 100K 1M FREQUENCY (Hz) Dropout Voltage vs. Output FIGURE 2-10: Density. Output Noise Spectral FIGURE 2-11: Turn-On Time. FIGURE 2-12: (Auto-Discharge). MIC5364 Turn-Off Time 300 VOUT = 2.8V DROPOUT VOLTAGE (mV) 250 300mA CIN = COUT = 1μF 200 150mA 150 100 50mA 50 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE( °C) FIGURE 2-8: Temperature. Dropout Voltage vs. 700 CURRENT LIMIT (mA) 650 600 550 500 450 VOUT = 1.2V 400 CIN = COUT = 1μF 350 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) FIGURE 2-9: Voltage. DS20006604A-page 6 Current Limit vs. Input  2021 Microchip Technology Inc. and its subsidiaries MIC5363/4 FIGURE 2-13: Load Transient. FIGURE 2-15: Line Transient. FIGURE 2-14: Load Transient. FIGURE 2-16: Line Transient.  2021 Microchip Technology Inc. and its subsidiaries DS20006604A-page 7 MIC5363/4 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE Pin Number Pin Name Description 1 NC Not internally connected. 2 NC Not internally connected. 3 GND Ground. 4 VIN 5 VOUT 6 EN1 Enable Input. Active-High. Logic High = ON, Logic Low = OFF. Do not leave floating. EP ePad Exposed Heatsink Pad. Connect to ground for best thermal performance. DS20006604A-page 8 Supply Input. Decouple with 1 µF ceramic capacitor. Output Voltage. Decouple with 1 µF ceramic capacitor.  2021 Microchip Technology Inc. and its subsidiaries MIC5363/4 4.0 APPLICATION INFORMATION The MIC5363/4 is a 300 mA LDO, packaged in a 1.2 mm x 1.2 mm Thin DFN package. The MIC5364 includes an auto-discharge feature which automatically discharges the output capacitor when the output is disabled. The MIC5363/4 consists of an internal reference, error amplifier, P-channel pass transistor, and internal feedback resistors. The error amplifier compares the feedback voltage with that of the reference. Depending upon whether the feedback is lower or higher than the reference determines whether the gate of the pass transistor is pulled low to allow more current and increase output voltage or pulled high to reduce current. The MIC5363/4 regulator is fully protected from damage due to fault conditions through linear current limiting and thermal shutdown. 4.1 Input Capacitor The MIC5363/4 is a high-performance, high-bandwidth device. An input capacitor of 1 µF capacitor is required from the input to ground to provide stability. Low-ESR ceramic capacitors provide optimal performance at a minimum of space. Additional high-frequency capacitors, such as small valued NPO dielectric type capacitors, help filter out high-frequency noise and are good practice in any RF-based circuit. X5R or X7R dielectrics are recommended for the input capacitor. Y5V dielectrics lose most of their capacitance over temperature and are therefore, not recommended. 4.2 Output Capacitor The MIC5392/3 requires an output capacitor of 1 µF or greater to maintain stability. The design is optimized for use with low-ESR ceramic chip capacitors. High-ESR capacitors may cause high frequency oscillation. The output capacitor can be increased, but performance has been optimized for a 1 µF ceramic output capacitor. X7R/X5R dielectric-type ceramic capacitors are recommended because of their temperature performance. X7R type capacitors change capacitance by 15% over their operating temperature range and are the most stable type of ceramic capacitors. Z5U and Y5V dielectric capacitors change value by as much as 50% and 60%, respectively, over their operating temperature ranges. To use a ceramic chip capacitor with Y5V dielectric, the value must be much higher than an X7R ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range. 4.3 4.4 Enable/Shutdown The MIC5363/4 comes with an active-high enable pin that allows the regulator to be disabled. Forcing the enable pin low disables the regulator and sends it into an off-mode current state drawing virtually zero current. When disabled, the MIC5364 switches an internal 30Ω load on the regulator output to discharge the external capacitor. Forcing the enable pin high enables the output voltage. The active-high enable pin uses CMOS technology and cannot be left floating. A floating enable pin may cause an indeterminate state on the output. 4.5 Thermal Considerations The MIC5392/3 is designed to provide 150 mA of continuous current for both outputs in a very small package. Maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. For example if the input voltage is 3.6V, the output voltage is 2.8V and the output current = 300 mA. The actual power dissipation of the regulator circuit can be determined using Equation 4-1: EQUATION 4-1: P D =  V IN – V OUT I OUT + V IN  I GND Because this device is CMOS and the ground current is typically