MIC5232-1.8YML-TR

MIC5232 10mA Ultra-Low Quiescent Current µCap LDO Features General Description The MIC5232 is an ultra-low quiescent current, lowdropout linear regulator that is capable of operating from a single-cell lithium ion battery. Consuming only 1.8µA of quiescent current while operating, the MIC5232 is ideal for stand-by applications like powering real-time clocks or memory in battery operated electronics.       Input voltage range: 2.7V to 7.0V Ultra-low Iq: Only 1.8µA operating current Stable with 0.47µF ceramic output capacitor Low dropout voltage of 100mV @ 10mA Reverse Battery Protection High output accuracy: – +2.0% initial accuracy – +3.0% over temperature Logic-Level Enable Input Miniature 6-pin 2mm x 2mm MLF package Lead-Free Thin SOT-23-5 Package Tight Load and Line Regulation The MIC5232 is capable of providing 10mA of output current and has low output noise, providing a small, efficient solution ideal for any keep-alive application. This includes reverse current protection, keeping reverse leakage (VOUT > VIN) down to 20nA.     The MIC5232 is a µCap design, operating with very small ceramic output capacitors for stability, reduction of required board space and component cost. Applications The MIC5232 is available in fixed output voltages in the miniature 6-pin 2mm x 2mm MLF® package and thin SOT-23-5 package with an operating junction temperature range of -40°C to 125°C.     Real-Time Clock Power Supply Stand-by Power Supply SRAM Memory Back-up Supply Cellular Telephones and Notebook Computers Typical Application MIC5232-1.2YD5 VIN 3.6V VIN 1µF VOUT 1.2V VOUT 0.47µF ceramic EN GND 3.0 2.7 Ground Pin Current vs. Input Voltage 2.4 2.1 1.8 1.5 1.2 0.9 1.5 Real-Time Clock Back-up Supply 0.6 0.3 VOUT = 1.2V IOUT = 100µA COUT = 0.47µF 0 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 INPUT VOLTAGE (V) MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com June 2012 M9999-061812-C Micrel, Inc. MIC5232 Ordering Information Marking Code(1) Voltage(2) Junction Temperature Range Package Lead Finish MIC5232-1.2YD5 ZA12 1.2V –40°C to +125°C TSOT-23-5 Pb-Free MIC5232-1.8YD5 ZA18 1.8V –40°C to +125°C TSOT-23-5 Pb-Free MIC5232-2.5YD5 ZA25 2.5V –40°C to +125°C TSOT-23-5 Pb-Free MIC5232-2.8YD5 ZA28 2.8V –40°C to +125°C TSOT-23-5 Pb-Free MIC5232-3.3YD5 ZA33 3.3V –40°C to +125°C TSOT-23-5 Pb-Free MIC5232-1.2YML 12Z 1.2V –40°C to +125°C 6-Pin 2mm x 2mm MLF(3) Pb-Free MIC5232-1.8YML 18Z 1.8V –40°C to +125°C 6-Pin 2mm x 2mm MLF(3) Pb-Free –40°C to +125°C 6-Pin 2mm x 2mm MLF (3) Pb-Free (3) Pb-Free Pb-Free Part Number MIC5232-2.5YML 25Z 2.5V MIC5232-2.8YML 28Z 2.8V –40°C to +125°C 6-Pin 2mm x 2mm MLF MIC5232-3.3YML 33Z 3.3V –40°C to +125°C 6-Pin 2mm x 2mm MLF(3) Notes: 1. Overbar/Underbar symbol ( / __ ) may not be to scale. 2. Other voltages available. Contact Micrel Inc. for more details. 3. MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. . June 2012 2 M9999-061812-C Micrel, Inc. MIC5232 Pin Configuration Pin Description Pin Number TSOT-23-5 Pin Number MLF Pin Name Pin Name 1 3 VIN Supply Input. 2 2 GND Ground. 3 1 EN Enable Input. Active High. High = on, Low = off. Do not leave floating. 4 5 NC Not Internally Connected. 5 4 VOUT - 6 NC - EP ePad Output (10mA output current). Not Internally Connected. Exposed pad connected-to-ground. Block Diagram June 2012 3 M9999-061812-C Micrel, Inc. MIC5232 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Input Voltage (VIN) ................................0V to 8V Enable Input Voltage (VEN)...............................0V to 8V Power Dissipation (PD) .................... Internally Limited(3) Junction Temperature (TJ).................. –40°C to +125°C Storage Temperature (TS) .................. –65°C to +150°C Lead Temperature (soldering, 5 sec.) ................. 260°C ESD Rating(4) ......................................................... ±2kV Supply voltage (VIN) ...................................... 2.7V to 7V Enable Input voltage (VEN) ...............................0V to VIN Thermal Resistance TSOT-23-5 (θJA)......................................... 235°C/W MLF-6 (θJA) .................................................. 90°C/W Electrical Characteristics(5) VIN = VOUT + 1.0V, COUT = 0.47µF, IOUT = 100µA, TJ = 25°C, bold values indicate –40°C to +125°C, unless noted. Parameter Output Voltage Accuracy Conditions Variation from nominal VOUT Variation from nominal VOUT; -40C to +125C Min -2.0 -3.0 Typ Output Voltage Temp. Coefficient Line Regulation VIN = VOUT +1V to7V; 40 0.02 Load Regulation IOUT = 10µA to 10mA 0.2 Dropout Voltage(6) IOUT = 100µA IOUT = 10mA 60 100 IOUT = 10µA VEN < 0.18V VOUT = 0V VOUT = VIN + 1V f = 10Hz f = 1kHz COUT =0.47µF; 10Hz to 100kHz 1.8 0.1 70 0.02 55 35 400 Ground Pin Current Ground Pin Current in Shutdown Current Limit Reverse Current (VOUT > VIN) Ripple Rejection Output Voltage Noise Enable Input Enable Input Voltage Enable Input Current Turn-on Time(7) Logic Low (Regulator Shutdown) Logic High (Regulator Enabled) VIL < 0.18V (Regulator Shutdown) VIH > 1.4V (Regulator Enabled) COUT = 0.47µF Max +2.0 +3.0 0.25 1.0 1.5 300 % % mV mV 3 1.5 120 1 µA µA mA µA dB dB µVrms 0.18 V V nA nA ms 1.4 1 1 0.75 Units % % ppm/C %/V 1.5 Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. 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. 4. Devices are ESD sensitive. Handling precautions recommended. 5. Specification for packaged product only. 6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal VOUT. For outputs below 2.7V, dropout voltage is the input-to-output differential with the minimum input voltage 2.7V. 7. Turn-on time is measured from 10% of the positive edge of the enable signal to 90% of the rising edge of the output voltage of the regulator. June 2012 4 M9999-061812-C Micrel, Inc. MIC5232 Typical Characteristics 80 50 40 30 VOUT=3.3V VIN=VOUT+1V IOUT=100µA COUT=.47µF 20 10 0 0.01 100 80 60 40 20 VOUT = 3.3V COUT = 0.47µF 0.1 1 10 100 1000 10000 0 1 2 3 4 5 6 7 8 9 100 80 60 V OUT = 3.3V V IN = VOUT + 1V COUT = 0.47µF 0 20 40 60 80 100 1 0.8 100µA 0.6 0.4 10mA VOUT =1.2V VIN =VOUT +1V COUT =0.47µF 0.2 120 Ground Pin Current vs. Output Current 1 2 3 4 5 INPUT VOLTAGE (V) 6 6 4 VOUT = 3.3V VIN = VOUT + 1V COUT = 0.47µF 4 5 6 7 8 9 10 2.1 1.8 1.5 1.2 0.9 V OUT = 1.2V IOUT = 100µA COUT = 0.47µF 0.6 3.0 2.9 2.8 3.5 4.5 5.5 2.5 6.5 ENABLE THRESHOLD (V) CURRENT LIMIT (mA) 0.9 70 60 50 40 30 20 VOUT = 3.3 COUT = 0.47µF 10 0 0 20 40 60 80 TEMPERATURE (°C) June 2012 100 120 120 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 Enable-On Threshold vs. Temperature 80 -20 100 INPUT VOLTAGE (V) 16 -40 80 VOUT = 1.2V IOUT = 100uA COUT = 0.47µF 2 1.0 0 60 4 90 2 40 6 100 VOUT = 3.3V VIN = VOUT + 1V COUT =0.47µF IOUT =10mA 20 8 Current Limit 8 0 10 18 4 -20 12 20 6 VOUT = 3.3V VIN = VOUT +1V COUT = 0.47µF 2.7 0 2.5 Ground Pin Current vs. Temperature 10 120 3.1 INPUT VOLTAGE (V) 12 100 Ground Pin Current vs. Input Voltage 2.4 OUTPUT CURRENT (mA) 14 80 TEMPERATURE (°C) 0 3 60 14 0.3 0 40 3.2 -40 GROUND CURRENT (µA) GROUND CURRENT (µA) 8 20 3.3 7 2.7 10 0 Output Voltage vs. Temperature Ground Pin Current vs. Input Voltage 12 2 -20 2.6 3 1 10 2.5 0 14 0 VOUT =3.3V IOUT =100µA COUT =0.47µF 20 3.4 TEMPERATURE (°C) 2 30 3.5 0 0 40 TEMPERATURE (°C) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 120 -20 50 -40 10 1.2 140 -40 60 Output Voltage vs. Input Voltage 1.4 160 20 70 OUTPUT CURRENT (mA) Dropout Voltage vs. Temperature 40 80 0 0 FREQUENCY (kHz) DROPOUT VOLTAGE (mV) DROPOUT VOLTAGE (mV) DROPOUT VOLTAGE (mV) PSRR (dB) 60 GROUND CURRENT (µA) 90 120 70 GROUND CURRENT (µA) Dropout Voltage vs. Temperature Dropout Voltage vs. Output Current Ripple Rejection 0.8 0.7 0.6 0.5 0.4 0.3 VOUT = 3.3V VIN = VOUT + 1V COUT = 0.47µF 0.2 0.1 0.0 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) 5 6 6.5 7 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) M9999-061812-C Micrel, Inc. MIC5232 Typical Characteristics (continued) Short Circuit Current vs. Temperature Turn-On Time 1400 (VOUT > VIN ) 100 80 1000 800 600 400 VOUT = 1.2V VIN = 2.7V COUT = 1uF IOUT = 100uA 200 0 90 70 60 50 40 30 20 VOUT = 0V VIN = 4.3V COUT = 0.47µF 10 -20 0 20 40 60 80 100 Temperature (°C) 1E+02 120 80 70 60 50 40 30 20 VIN=2.7V COUT=0.47µF 10 0 0 -40 REVERSE CURRENT (nA) (V OUT CURRENT) SHORT CIRCUIT CURRENT (mA) 1200 Time (µs) Reverse Leakage Current 90 -40 10 60 TEMPERATURE (°C) 110 2.5 3.0 3.5 4.0 4.5 5.0 5.5 OUTPUT VOLTAGE (V) Output Noise Spectral Density 1E+01 1E-00 1E-01 VOUT = 1.2V VIN = 4.3V ROUT COUT = 0.47µF 1E-02 0.1 100 FREQUENCY (kHz) June 2012 6 M9999-061812-C Micrel, Inc. MIC5232 Functional Characteristics June 2012 7 M9999-061812-C Micrel, Inc. MIC5232 Because this device is CMOS and the ground current is typically