MIC5502-1.8YMT-T5

MIC5501/2/3/4 300 mA Single Output LDO in Small Packages Features General Description • • • • • • • • • • • • The MIC5501/2/3/4 is an advanced general-purpose LDO ideal for powering general-purpose portable devices. The MIC5501/2/3/4 family of products provides a high-performance 300 mA LDO in an ultra-small 1 mm x 1 mm package. The MIC5502 and MIC5504 LDOs include an auto-discharge feature on the output that is activated when the enable pin is low. The MIC5503 and MIC5504 have an internal pull-down resistor on the enable pin that disables the output when the enable pin is left floating. This is ideal for applications where the control signal is floating during processor boot up. Input Voltage Range: 2.5V to 5.5V Fixed Output Voltages from 1.0V to 3.3V 300 mA Guaranteed Output Current High Output Accuracy (±2%) Low Quiescent Current: 38 μA Stable with 1 μF Ceramic Output Capacitors Low Dropout Voltage: 160 mV @ 300 mA Output Discharge Circuit: MIC5502, MIC5504 Internal Enable Pull-Down: MIC5503, MIC5504 Thermal-Shutdown and Current-Limit Protection 4-Lead 1.0 mm x 1.0 mm Thin DFN Package MIC5501/4 5-Lead SOT23 Package Applications • • • • • Smartphones DSC, GPS, PMP, and PDAs Medical Devices Portable Electronics 5V Systems Ideal for battery-powered applications, the MIC5501/2/3/4 offers 2% initial accuracy, low dropout voltage (160 mV at 300 mA), and low ground current (typically 38 μA). The MIC5501/2/3/4 can also be put into a zero-off-mode current state, drawing virtually no current when disabled. The MIC5501/2/3/4 has an operating temperature range of –40°C to +125°C. junction Package Types MIC5501/2/3/4 4-Lead DFN (MT) (Top View) VIN EN 4 3 MIC5501/4 SOT23-5 (M5) (Top View) EN GND VIN 1 2 3 EP 1 2 VOUT GND  2019 Microchip Technology Inc. 4 NC 5 VOUT DS20006006B-page 1 MIC5501/2/3/4 Typical Application Circuit MIC5501/2/3/4 MIC550X-xYMT VIN VBAT 1μF VOUT 1μF EN GND DS20006006B-page 2  2019 Microchip Technology Inc. MIC5501/2/3/4 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Supply Voltage (VIN) .................................................................................................................................... –0.3V to +6V Enable Voltage (VEN) .................................................................................................................................... –0.3V to VIN Power Dissipation (PD) ............................................................................................................. Internally Limited, Note 1 ESD Rating (Note 2) ..................................................................................................................................................3 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; CIN = COUT = 1 μF; IOUT = 100 μA; TJ = +25°C, bold values indicate –40°C to +125°C, unless noted. Parameter Output Voltage Accuracy Symbol VOUT Min. Typ. Max. –2.0 — 2.0 –3.0 — 3.0 Units Conditions Variation from nominal VOUT % Variation from nominal VOUT; –40°C to +125°C Line Regulation — — 0.02 0.3 %/V VIN = VOUT +1V to 5.5V; IOUT = 100 μA Load Regulation (Note 1) — — 8 40 mV IOUT = 100 μA to 300 mA Dropout Voltage (Note 2) VDO — 80 190 — 160 380 Ground Pin Current (Note 3) IGND — 38 55 — 42 65 IGND(SHDN) — 0.05 1 μA VEN = 0V PSRR — 60 — dB f = 1 kHz; COUT = 1 μF VOUT = 0V Ground Pin Current in Shutdown Ripple Rejection Current Limit mV μA ILIM 400 630 900 mA Output Voltage Noise en — 175 — μVRMS Auto-Discharge NFET Resistance — — 25 — Ω — — 4 — MΩ — — 0.2 1.2 — — IOUT = 150 mA IOUT = 300 mA IOUT = 0 mA IOUT = 300 mA COUT = 1 μF, 10 Hz to 100 kHz MIC5502, MIC5504 Only; VEN = 0V; VIN = 3.6V; IOUT = –3 mA Enable Input Enable Pull-Down Resistor Enable Input Voltage  2019 Microchip Technology Inc. VEN V For MIC5503 and MIC5504 use only Logic-Low Logic-High DS20006006B-page 3 MIC5501/2/3/4 ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Characteristics: VIN = VEN = VOUT + 1V; CIN = COUT = 1 μF; IOUT = 100 μA; TJ = +25°C, bold values indicate –40°C to +125°C, unless noted. Parameter Enable Input Current MIC5501, MIC5502 Symbol IEN Enable Input Current MIC5503, MIC5504 IEN Turn-On Time tON Note 1: 2: 3: Min. Typ. Max. — 0.01 1 — 0.01 1 — 0.01 1 — 1.4 2 — 50 125 Units μA μA μs Conditions VEN = 0V VEN = 5.5V VEN = 0V VEN = 5.5V COUT = 1 μF; IOUT = 150 mA 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 measured at 1V differential. For outputs below 2.5V, dropout voltage is the input-to-output differential with the minimum input voltage 2.5V. Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus the ground pin current. DS20006006B-page 4  2019 Microchip Technology Inc. MIC5501/2/3/4 TEMPERATURE SPECIFICATIONS (Note 1) Parameters Symbol Min. Typ. Max. Units Conditions Storage Temperature Range TS –65 — +150 °C — Maximum Junction Temperature Range TJ –40 — +150 °C — Operating Junction Temperature Range TJ –40 — +125 °C — Lead Temperature — — — +260 °C Soldering, 10s Thermal Resistance 1 mm x 1 mm Thin DFN-4 JA — 250 — °C/W — Thermal Resistance SOT23-5 JA — 253 — °C/W — Temperature Ranges Package Thermal Resistances 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.  2019 Microchip Technology Inc. DS20006006B-page 5 MIC5501/2/3/4 2.0 Note: TYPICAL PERFORMANCE CURVES 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. FIGURE 2-1: Ratio. Power Supply Rejection FIGURE 2-4: Voltage. Ground Current vs. Supply FIGURE 2-2: Current. Dropout Voltage vs. Output FIGURE 2-5: Current. Ground Current vs. Load FIGURE 2-3: Temperature. Dropout Voltage vs. FIGURE 2-6: Temperature. Ground Current vs. DS20006006B-page 6  2019 Microchip Technology Inc. MIC5501/2/3/4 FIGURE 2-7: Current. Output Voltage vs. Output FIGURE 2-10: Voltage. Current Limit vs. Supply VIN = 3V VOUT = 1.8V CIN = COUT = 1μF VEN (500mV/div) VOUT (500mV/div) Time (10μs/div) FIGURE 2-8: Voltage. Output Voltage vs. Supply FIGURE 2-11: VEN (1V/div) Enable Turn-On. VIN = 4.3V VOUT = 3.3V CIN = COUT = 1μF VOUT (1V/div) Time (20μs/div) FIGURE 2-9: Temperature. Output Voltage vs.  2019 Microchip Technology Inc. FIGURE 2-12: Enable Turn-On. DS20006006B-page 7 MIC5501/2/3/4 VOUT = 3.3V CIN = COUT = 1μF VIN = 3.8V VOUT = 2.8V CIN = COUT = 1μF IOUT (100mA/div) VOUT (AC-COUPLED) (100mV/div) VEN (1V/div) VOUT (1V/div) Time (100μs/div) FIGURE 2-13: Time (20μs/div) FIGURE 2-16: Load Transient. Auto-Discharge (No Load). VIN = 4.3V VOUT = 3.3V CIN = COUT = 1μF IOUT (100mA/div) VOUT (AC-COUPLED) (100mV/div) Time (100μs/div) FIGURE 2-14: Load Transient. 5.5V VOUT = 2.8V CIN = COUT =1μF IOUT = 300mA 3.8V VIN (2mV/div) VOUT (AC-COUPLED (50mV/div) Time (100μs/div) FIGURE 2-15: DS20006006B-page 8 Line Transient.  2019 Microchip Technology Inc. MIC5501/2/3/4 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE 4-Lead TDFN Pin Number SOT23-5 Pin Number Pin Name 1 5 VOUT Output Voltage. When disabled the MIC5502 and MIC5504 switches on an internal 25Ω load to discharge the external capacitors. 2 2 GND Ground. 3 3 EN Description Enable Input: Active-High. High = ON; Low = OFF. For MIC5501 and MIC5502 do not leave floating. MIC5503 and MIC5504 have an internal pull-down and this pin may be left floating. 4 1 VIN Supply Input. — 4 NC No Connection. Pin is not internally connected. EP — ePAD  2019 Microchip Technology Inc. Exposed Heatsink Pad. Connect to GND for best thermal performance. DS20006006B-page 9 MIC5501/2/3/4 4.0 APPLICATION INFORMATION MIC5501/2/3/4 are low-noise 300 mA LDOs. The MIC5502 and MIC5504 include an auto-discharge circuit that is switched on when the regulator is disabled through the enable (EN) pin. The MIC5503 and MIC5504 have an internal pull-down resistor on the EN pin to ensure the output is disabled if the control signal is tri-stated. The MIC5501/2/3/4 regulators are fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. The MIC5501/2/3/4 is not suitable for RF transmitter systems. 4.1 Input Capacitor The MIC5501/2/3/4 are high performance, high bandwidth devices. An input capacitor of 1 μF 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 MIC5501/2/3/4 require 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 are not recommended because they may cause high frequency oscillation. The output capacitor can be increased, but performance has been optimized for a 1 μF ceramic output capacitor and does not improve significantly with larger capacitance. 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 No-Load Stability Unlike many other voltage regulators, the MIC5501/2/3/4 remain stable and in regulation with no load. This is especially important in CMOS RAM keep-alive applications. DS20006006B-page 10 4.4 Enable/Shutdown The MIC5501/2/3/4 each come with an active-high enable pin that allows the regulator to be disabled. Forcing the EN pin low disables the regulator and sends it into an off mode current state drawing virtually zero current. When disabled, the MIC5502 and MIC5504 switches an internal 25Ω load on the regulator output to discharge the external capacitor. Forcing the EN pin high enables the output voltage. The MIC5501 and MIC5502 enable pin uses CMOS technology and the EN pin cannot be left floating; a floating EN pin may cause an indeterminate state on the output. The MIC5503 and MIC5504 have an internal pull-down resistor on the enable pin to disable the output when the enable pin is floating. 4.5 Thermal Considerations The MIC5501/2/3/4 are designed to provide 300 mA of continuous current 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 is 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 1   I OUT + V IN  I GND Because this device is CMOS and the ground current is typically