MIC5333-J4YMT-TR

MIC5333 Micro-Power High Performance Dual 300mA ULDO™ with Dual POR General Description Features The MIC5333 is a tiny dual low quiescent current LDO ideal for applications that are power sensitive. The MIC5333 integrates two high performance, 300mA LDOs, and a POR generator for each LDO into a 2.5mm x 2.5mm Thin MLF® package, which occupies less PC board area than a single SOT-23 package. The MIC5333 is designed to reject input noise and provide low output noise with fast transient response to respond to any load change quickly even though it is a low quiescent current part. This combination of PSRR, low noise and transient response along with low power consumption makes for a very high performance, yet general purpose product. The MIC5333 is a µCap design, operating with very small ceramic output capacitors, which reduces required board space and component cost; and it is available in fixed output voltages in the tiny 10-pin 2.5mm x 2.5mm Thin MLF® leadless package. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. • • • • • • • • • • • 2.3V to 5.5V input voltage range 300mA output current per LDO Very low quiescent current: 25µA per LDO POR output with programmable delay for each LDO High PSRR – >65dB on each LDO Stable with 1µF ceramic output capacitors Tiny 10-pin 2.5mm x 2.5mm Thin MLF® package Ultra-low dropout voltage – 120mV @ 300mA Low output voltage noise – 50µVrms Thermal shutdown protection Current limit protection Applications • • • • • Camera phones Mobile phones PDAs GPS receivers Portable devices ___________________________________________________________________________________________________________ Typical Application MIC5333-xxYMT VBAT 100k 100k VIN VOUT1 I/O EN1 VOUT2 CORE EN2 POR1 /RST I/O CSET1 POR2 /RST CORE CSET2 1µF GND 1µF 1µF Camera DSP Camera DSP Power Supply Circuit ULDO is a trademark of Micrel, Inc. 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 February 2008 M9999-021408-A Micrel, Inc. MIC5333 Ordering Information Part Number Manufacturing Part Number Marking Voltage Junction Temperature Range Package XJ4 2.5V/1.2V –40° to +125°C 10-Pin 2.5 x 2.5 Thin MLF® MIC5333-2.5/1.2YMT MIC5333-J4YMT MIC5333-2.8/2.8YMT MIC5333-MMYMT XMM 2.8V/2.8V –40° to +125°C 10-Pin 2.5 x 2.5 Thin MLF® MIC5333-2.8/2.85YMT MIC5333-MNYMT XMN 2.8V/2.85V –40° to +125°C 10-Pin 2.5 x 2.5 Thin MLF® MIC5333-2.85/2.85YMT MIC5333-NNYMT XNN 2.85V/2.85V –40° to +125°C 10-Pin 2.5 x 2.5 Thin MLF® MIC5333-3.0/2.8YMT MIC5333-PMYMT XPM 3.0V/2.8V –40° to +125°C 10-Pin 2.5 x 2.5 Thin MLF® MIC5333-3.0/2.85YMT MIC5333-PNYMT XPN 3.0V/2.85V –40° to +125°C 10-Pin 2.5 x 2.5 Thin MLF® MIC5333-3.0/3.0YMT MIC5333-PPYMT XPP 3.0V/3.0V –40° to +125°C 10-Pin 2.5 x 2.5 Thin MLF® Note: Other voltage options available. Contact Micrel for details. Pin Configuration VIN 1 10 VOUT1 GND 2 9 VOUT2 POR2 3 8 CSET2 POR1 4 7 CSET1 EN2 5 6 EN1 10-Pin 2.5mm x 2.5mm Thin MLF® (MT) (Top View) Pin Description Pin Number Pin Name Pin Function 1 VIN Supply Input. 2 GND Ground. 3 POR2 Power-On Reset Output (Regulator 2): Open-drain output. Active low indicates an output under-voltage condition on regulator 2 when the device is enabled. 4 POR1 Power-On Reset Output (Regulator 1): Open-drain output. Active low indicates an output under-voltage condition on regulator 1 when the device is enabled. 5 EN2 Enable Input (Regulator 2): Active High Input. Logic High = On; Logic Low = Off. Do not leave floating. 6 EN1 Enable Input (Regulator 1): Active High Input. Logic High = On; Logic Low = Off. Do not leave floating. 7 CSET1 Delay Set Input (Regulator 1): Connect external capacitor to GND to set the internal delay for the POR1 output. When left open, there is no delay. This pin cannot be grounded. 8 CSET2 Delay Set Input (Regulator 2): Connect external capacitor to GND to set the internal delay for the POR2 output. When left open, there is no delay. This pin cannot be grounded. 9 VOUT2 Regulator Output – LDO2. 10 VOUT1 Regulator Output – LDO1. February 2008 2 M9999-021408-A Micrel, Inc. MIC5333 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) ............................................. 0V to +6V Enable Input Voltage (VEN1, VEN2) .......................... 0V to VIN POR Voltage (VPOR1, VPOR2) ................................. 0V to +6V Power Dissipation .................................. Internally Limited(3) Lead Temperature (soldering, 3sec.)......................... 260°C Storage Temperature (Ts) .........................–65°C to +150°C ESD Sensitive(4) Supply Voltage (VIN)..................................... +2.3V to +5.5V Enable Input Voltage (VEN1, VEN2) .......................... 0V to VIN POR Voltage (VPOR1, VPOR2) .............................. 0V to +5.5V Junction Temperature (TJ) ........................ –40°C to +125°C Junction Thermal Resistance 2.5mm x 2.5mm Thin MLF-10 (θJA) ...................75°C/W Electrical Characteristics(5) VIN = VEN1 = VEN2 = VOUT + 1.0V, higher of the two regulator outputs; IOUT1 = IOUT2 = 100µA; COUT1 = COUT2 = 1µF; TJ = 25°C, bold values indicate –40°C < TJ < +125°C; unless noted. Parameter Output Voltage Accuracy Condition Min Typ Max Units Variation from nominal VOUT –1.0 +1.0 % Variation from nominal VOUT; –40°C to +125°C –2.0 +2.0 % 0.3 %/V Line Regulation VIN = VOUT +1V to 5.5V; IOUT = 100µA 0.02 0.6 %/V Load Regulation IOUT = 100µA to 300mA 0.2 0.5 % Dropout Voltage IOUT = 50mA 20 40 mV IOUT = 300mA 120 240 mV Ground Current VEN1 = High; VEN2 = Low; IOUT = 100µA to 300mA 25 50 µA VEN1 = Low; VEN2 = High; IOUT = 100µA to 300mA 25 50 µA 40 75 µA 0.01 1.0 µA VEN1 = VEN2 = High; IOUT1= 300mA, IOUT2 = 300mA Ground Current in Shutdown VEN1 = VEN2 < 0.2V Ripple Rejection f = 1kHz; COUT = 2.2µF 65 f = 20kHz; COUT = 2.2µF Current Limit VOUT = 0V Output Voltage Noise COUT=1µF; 10Hz to 100kHz dB 45 350 550 dB 800 50 mA µVRMS Enable Inputs (EN1/EN2 ) Enable Input Voltage Logic Low 0.2 Logic High Enable Input Current V V 1.2 VIL ≤ 0.2V 0.01 1.0 µA VIH ≥ 1.2V 0.01 1.0 µA COUT = 1µF (Enable of First LDO) 140 500 µs COUT = 1µF (Enable of Second LDO after First Enabled) 110 500 µs Turn-on Time Turn-on Time (LDO1 and 2) POR1/POR2 Output VTH Low Threshold, % of VOUT (POR ON) 88 % High Threshold, % of VOUT (POR OFF) VOL POR Output Logic Low Voltage; IL = 250µA IPOR POR Leakage Current, POR OFF February 2008 3 –1.0 98 % 0.02 0.1 V 0.01 +1.0 µA M9999-021408-A Micrel, Inc. Parameter MIC5333 Condition Min Typ Max Units CSET Pin Current Source VCSET = 0V 0.8 1.4 2 µA CSET Pin Threshold Voltage POR = High 1.21 1.25 1.29 V CSET1/CSET2 INPUT 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, and the regulator will go into thermal shutdown. 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF. 5. Specification for packaged product only. February 2008 4 M9999-021408-A Micrel, Inc. MIC5333 Typical Characteristics PSRR -100 -90 PSRR -80 50mA -80 0.10 -60 -50 300mA 0.06 -30 -20 VIN = 2.3V V = 1.2V -10 OUT COUT = 2.2µF 0 -20 VIN = 2.3V -10 VOUT = 1.2V COUT = 1µF 0 Dropout Voltage vs. Temperature Ground Current vs. Supply Voltage 40 38 300mA 0.12 0.08 100mA 0.06 0.04 50mA 0.02 10mA 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) Ground Current vs. Temperature 39 10mA 100mA 300mA EN1 = EN2 = VIN VIN = VOUT + 1V 33 VOUT = 2.8V COUT = 1µF 30 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) 850 800 20 2 2.820 42 Current Limit vs. Supply Voltage 0 0 41 Dual LDO Enabled 39 36 VOUT1 = 2.5V 34 VOUT2 = 1.2V 32 COUT1 = 1µF C = 1µF 30 OUT2 IOUT1 = 300mA 28 I OUT2 = 300mA 26 24 22 Single LDO Enabled 27 2.5 3 3.5 4 4.5 5 SUPPLY VOLTAGE (V) 5.5 Output Voltage vs. Load Current 3.0 2.812 2.8 2.808 2.7 VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF 50 100 150 200 250 300 LOAD CURRENT (mA) 100K 2.6 1.0 10K 600 550 Dual LDO Enabled Single LDO Enabled 50 100 150 200 250 300 LOAD CURRENT (mA) Output Voltage vs. Temperature VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF 2.5 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) 1.2 750 0.8 Output Noise Spectral Density VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF Load = 50mA 0.6 1K 500 450 400 350 2 25 0 POR Delay vs. CSET 700 650 Ground Current vs. Load Current 35 VIN = VOUT + 1V VOUT1 = 2.5V 33 VOUT2 = 1.2V 31 COUT1 = 1µF COUT2 = 1µF 29 2.9 2.800 0 50 100 150 200 250 300 LOAD CURRENT (mA) 37 2.816 2.804 VOUT = 2.8V COUT = 1µF 0.02 FREQUENCY (Hz) 0.10 36 0.04 FREQUENCY (Hz) VOUT = 2.8V 0.16 COUT = 1µF 0.14 45 0.08 300mA -40 -30 0.18 0.12 50mA -70 -70 -60 -50 -40 0.14 -90 Dropout Voltage vs. Load Current CIN = 1µF COUT = 1µF 2.5 3 3.5 4 4.5 5 SUPPLY VOLTAGE (V) February 2008 5.5 100 100 0.4 VIN = 3.6V VOUT = 1.2V COUT = 1µF 1K 10K CSET (pF) 5 100K 0.2 0 10 100 1K 10K 100K FREQUENCY (Hz) 1M M9999-021408-A Micrel, Inc. MIC5333 Functional Characteristics February 2008 6 M9999-021408-A Micrel, Inc. MIC5333 Functional Diagram MIC5333 Block Diagram February 2008 7 M9999-021408-A Micrel, Inc. MIC5333 The active-high enable pin uses CMOS technology and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. Application Information MIC5333 is a dual 300mA LDO, with an integrated Power On Reset (POR) for each of the regulators. The MIC5333 regulator is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. Power On Reset Each of the regulator outputs has a Power On Reset status pin (POR1/POR2). This pin is an open drain output. When an LDO is enabled an active low POR indicates an under voltage condition on VOUT. Each POR status signal can be programmed for a delay of 1sec/µF by placing a capacitor from its associated CSET pin to ground. Where the CSET1 pin sets the delay for the POR1 output and the CSET2 pin sets the delay for the POR2 output. Zero delay is added by leaving the CSET1/2 pin open circuit. Input Capacitor The MIC5333 is a high-performance, high bandwidth device. Therefore, it requires a well-bypassed input supply for optimal performance. A 1µF capacitor is required from the input to ground to provide stability. Low-ESR ceramic capacitors provide optimal performance at a minimum of space. Additional highfrequency 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. Thermal Considerations The MIC5333 is designed to provide 300mA 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 3.0V for VOUT1, 2.8V for VOUT2 and the output current = 300mA. The actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) I OUT2 + VIN IGND Because this device is CMOS and the ground current is typically