MIC2212 Micrel, Inc. MIC2212 Dual µCap LDO and Power-On Reset General Description Features The MIC2212 is a dual µCap low dropout regulator with power-on reset circuit. The first regulator is capable of sourcing 150mA, while the second regulator can source up to 300mA and includes a power-on reset function. Ideal for battery operated applications, the MIC2212 offers 1% accuracy, extremely low dropout voltage (80mV @ 100mA), and extremely low ground current, only 48µA total. Equipped with TTL-logic-compatible enable pins, the MIC2212 can be put into a zero-off-mode current state, drawing no current when disabled. The MIC2212 is a µCap design, operating with very small ceramic output capacitors for stability, reducing required board space and component cost. The MIC2212 is available in fixed output voltages in the 10-pin 3mm × 3mm MLF™ leadless package. • Input voltage range: 2.25V to 5.5V • Stable with ceramic output capacitor • 2 LDO outputs • Output 1 – 150mA output current • Output 2 – 300mA output current • Power-on reset function with adjustable delay time • Low dropout voltage of 80mV @ 100mA • Ultra-low quiescent current of 48µA • High output accuracy: • +1.0% initial accuracy • +2.0% over temperature • Thermal shutdown protection • Current limit protection • Tiny 10-pin 3mm × 3mm MLF™ package Applications • Cellular/PCS phones • Wireless modems • PDAs Typical Application MIC2212-xxBML Li-Ion Battery VIN VOUT1 VI/O EN1 VOUT2 VCORE EN2 POR CBYP SET /RST Baseband µProcessor COUT = 1µF Ceramic GND Sets del ay for POR MIC2212 Typical Cell Phone Application MicroLeadFrame and MLF are trademarks of Amkor Technology. 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 2006 1 M9999-022106 MIC2212 Micrel, Inc. Ordering Information Part Number Voltage* (Vo1/Vo2) Junction Temp. Range Package Full Manufacturing Pb-Free MIC2212-1.6/2.8BML MIC2212-WMBML MIC2212-WMYML 1.6V/2.8V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-1.6/3.3BML MIC2212-WSBML MIC2212-WSYML 1.6V/3.3V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-1.8/2.6BML MIC2212-GKBML MIC2212-GKYML 1.8V/2.6V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-1.8/2.7BML MIC2212-GLBML MIC2212-GLYML 1.8V/2.7V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-1.8/2.8BML MIC2212-GMBML MIC2212-GMYML 1.8V/2.8V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-1.8/3.3BML MIC2212-GSBML MIC2212-GSYML 1.8V/3.3V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-1.85/2.85BML MIC2212-DNBML MIC2212-DNYML 1.85V/2.85V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-1.85/2.9BML MIC2212-DOBML MIC2212-DOYML 1.85V/2.9V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.5/3.3BML MIC2212-JSBML MIC2212-JSYML 2.5V/3.3V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.6/2.8BML MIC2212-KMBML MIC2212-KMYML 2.6V/2.8V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.6/2.85BML MIC2212-KNBML MIC2212-KNYML 2.6V/2.85V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.7/2.8BML MIC2212-LMBML MIC2212-LMYML 2.7V2.8V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.7/2.9BML MIC2212-LOBML MIC2212-LOYML 2.7V/2.9V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.7/3.0BML MIC2212-LPBML MIC2212-LPYML 2.7V/3.0V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.8/2.6BML MIC2212-MKBML MIC2212-MKYML 2.8V/2.6V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.8/2.8BML MIC2212-MMBML MIC2212-MMYML 2.8V/2.8V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.8/3.0BML MIC2212-MPBML MIC2212-MPYML 2.8V/3.0V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-2.85/2.85BML MIC2212-NNBML MIC2212-NNYML 2.85V/2.85V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-3.0/2.8BML MIC2212-PMBML MIC2212-PMYML 3.0V/2.8V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-3.0/2.85BML MIC2212-PNBML MIC2212-PNYML 3.0V/2.85V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-3.0/3.0BML MIC2212-PPBML MIC2212-PPYML 3.0V/3.0V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-3.0/3.3BML MIC2212-PSBML MIC2212-PSYML 3.0V/3.3V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-3.3/1.8BML MIC2212-SGBML MIC2212-SGYML 3.3V/1.8V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-3.3/2.5BML MIC2212-SJBML MIC2212-SJYML 3.3V/2.5V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-3.3/2.8BML MIC2212-SMBML MIC2212-SMYML 3.3V/2.8V -40°C to +125°C 10-Pin 3x3 MLF™ MIC2212-3.3/3.6BML MIC2212-SVBML MIC2212-SVYML 3.3V/3.6V -40°C to +125°C 10-Pin 3x3 MLF™ * For other output voltage options, contact Micrel marketing. Voltage Code Voltage Code Adj. A 2.8 M 1.5 F 2.850 N 1.6 W 2.9 O 1.8 G 3.0 P 1.850 D 3.1 Q 1.9 Y 3.2 R 2.0 H 3.3 S 2.1 E 3.4 T 2.5 J 3.5 U 2.6 K 3.6 V 2.7 L Table 1. Voltage Codes M9999-022106 2 February 2006 MIC2212 Micrel, Inc. Pin Configuration VIN 1 10 VOUT1 EN1 2 9 VOUT2 EN2 3 8 POR BYP 4 7 NC SET 5 6 GND 10-Pin 3mm × 3mm MLF™ (ML) (Top View) Pin Description Pin Number MLF-10 (3x3) Pin Name Pin Function 1 VIN Supply Input: (VIN1 and VIN2 are internally tied together.) 2 EN1 Enable Input to Regulator 1: Enables regulator 1 output. Active high input. High = on, low = off. Do not leave floating. 3 EN2 Enable Input to Regulator 2: Enables regulator 2 output. Active high input. High = on, low = off. Do not leave floating. 4 CBYP Reference Bypass: Connect external 0.01µF to GND to reduce output noise. May be left open. 5 SET Delay Set Input: Connect external capacitor to GND to set the internal delay for the POR output. When left open, there is no delay. This pin cannot be grounded. 6 GND Ground: Connect externally to Exposed Pad. 7 NC 8 POR 9 VOUT2 10 VOUT1 EP GND February 2006 No Connection. Power-On Reset Output: Open-drain output. Active low indicates an output undervoltage condition on regulator 2. Output of Regulator 2: 300mA output current. Output of Regulator 1: 150mA output current. Ground: Internally connected to the Exposed Pad. Connect externally to pin 6 of the IC. 3 M9999-022106 MIC2212 Micrel, Inc. Absolute Maximum Rating(1) Operating Ratings(2) Supply Input Voltage (VIN) ......................................0V to 7V Enable Input Voltage (VEN) ....................................0V to 7V Power Dissipation (PD) ................ Internally Limited, Note 3 Junction Temperature ............................... –40°C to +125°C Storage Temperature (TS) .......................... –65°C to 150°C Lead Temperature (soldering, 5 sec.) ........................ 260°C Supply Input Voltage (VIN) ..............................2.25V to 5.5V Enable Input Voltage (VEN) ................................... 0V to Vin Junction Temperature (TJ) ........................ –40°C to +125°C Package Thermal Resistance MLF™-10 (θJA) .................................................... 60°C/W Electrical Characteristics(4) VIN = VOUT +1.0V for higher output of the regulator pair; COUT = 1.0µF, IOUT = 100µA; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted. Parameter Conditions Min Output Voltage Accuracy Variation from nominal VOUT –1.0 –2.0 Output Voltage Temp. Coefficient Max Units +1.0 +2.0 % % 40 Line Regulation(5) VIN = VOUT +1V to 5.5V Load Regulation IOUT = 100µA to 150mA (Regulator 1 and 2) Voltage(6) Typ –0.3 –0.6 IOUT = 100µA to 300mA (Regulator 2) ppm/C 0.02 0.3 0.6 %/V 0.2 1.0 % 1.5 % IOUT = 150mA (Regulator 1 and 2) 120 190 250 mV mV IOUT = 300mA (Regulator 2) 240 340 420 mV IOUT1 = IOUT2 = 0µA 48 65 80 µA µA IOUT1 = 150mA and IOUT2 = 300mA 60 Ripple Rejection f = 1kHz; COUT = 1.0µF ceramic; CBYP = 10nF 60 Current Limit VOUT = 0V (Regulator 1) Dropout Ground Pin Current Ground Pin Current in Shutdown Output Voltage Noise Enable Input Enable Input Voltage Enable Input Current POR Output VTH VOL IPOR M9999-022106 2.0 VEN ≤ 0.4V f = 20kHz; COUT = 1.0µF ceramic; CBYP = 10nF VOUT = 0V (Regulator 2) µA dB 40 dB 150 280 460 300 450 700 COUT =1µF, CBYP = 0.01µF, 10Hz to 100kHz 30 Logic Low (Regulator Shutdown) µA mA mA µVrms 0.6 V Logic High (Regulator Enabled) 1.8 VIL < 0.6V (Regulator Shutdown) –1 0.01 +1 µA VIH > 1.8V (Regulator Enabled) –1 0.01 +1 µA Low Threshold, % of nominal VOUT2 (Flag ON) 90 High Threshold, % of nominal VOUT2 (Flag OFF) POR Output Logic Low Voltage; IL = 250µA Flag Leakage Current, Flag OFF 4 V % 96 –1 % 0.02 0.1 V 0.01 +1 µA February 2006 MIC2212 Parameter Micrel, Inc. Conditions Min Typ Max Units VSET = 0V 0.75 1.25 1.75 µA SET Input SET Pin Current Source SET Pin Threshold Voltage POR = High 1.25 V Notes 1. Exceeding maximum rating may damage the device. 2. The device is not guaranteed to work 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. Specification for packaged product only. 5. Minimum input for line regulation test is set to VOUT + 1V relative to the highest output voltage. 6. 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 2.25V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.25V. Minimum input operating voltage is 2.25V. February 2006 5 M9999-022106 MIC2212 Micrel, Inc. CBYP = 100nF CBYP = 10nF Spectral Noise Density Output 2 100µA Load DROPOUT VOLTAGE (mV) 1.5 Dropout Voltage Output 1 150mA load Dropout Characteristics Output 1 100µA 150mA 350 300 300mA load 150 100 50 0 -40 -20 0 20 40 60 80 100120140 TEMPERATURE °C) ( 0 -40 -20 0 20 40 60 80 100120140 TEMPERATURE °C) ( Ground Current vs. Output 1 Current Ground Current vs. Output 2 Current 60 50 40 30 20 10 0 0 20 40 60 80 100 120 140 OUTPUT 1 LOAD CURRENT (mA) M9999-022106 60 100µA 300mA 1.5 1 0 0 Dropout Voltage Output 2 200 50 2 1 2 3 4 5 SUPPLY VOLTAGE (V) 250 100 Dropout Characteristics Output 2 3 0.5 0.5 0 0 100 1k 10k 100k 1M FREQUENCY (Hz) 2.5 1 10k 100k 1M 100 1k FREQUENCY (Hz) 150 GROUND CURRENT (µA) 2 COUT = 1µF CIN = 1µF CBYP = 0.01µF 10E-9 10 60 GROUND CURRENT (µA) 10E-9 10 COUT = 1µF CIN = 1µF CBYP = 0.01µF 100E-9 2.5 OUTPUT (V) 1E-6 100E-9 3 0.1 1 10 100 1000 FREQUENCY (kHz) 100µA Load 1E-6 50 50 1 2 3 4 5 SUPPLY VOLTAGE (V) Ground Current vs. Supply Voltage Output 1 and 2 with 100µA load 40 30 20 10 0 0 60 GROUND PIN CURRENT (µA) 10E-6 VIN = VOUT + 1 IOUT = 300mA COUT = 1µF 0 0.01 0.1 1 10 100 1000 FREQUENCY (kHz) GROUND CURRENT (µA) SPECTRAL NOISE DENSITY (V/root Hz) 20 VIN = VOUT + 1 IOUT = 150mA COUT = 1µF 0 0.01 CBYP = 1nF 40 CBYP = 1nF DROPOUT VOLTAGE (mV) 20 CBYP = 10nF 60 Spectral Noise Density Output 1 10E-6 OUTPUT (V) 40 CBYP = 100nF PSRR (dB) PSRR (dB) 60 PSRR Output 2 80 1 2 3 4 5 SUPPLY VOLTAGE (V) Ground Pin Current 1mA 50 40 40 30 6 0µA 100µA 30 20 20 10 10 0 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA) 6 0 Load on both outputs -40 -20 0 20 40 60 80 100 120 140 160 PSRR Output 1 80 SPECTRAL NOISE DENSITY (V/root Hz) Typical Characteristics TEMPERATURE °C) ( February 2006 MIC2212 Micrel, Inc. Typical Characteristics (cont.) 20 15 10 LDO1 Only LDO2 Disabled (VEN2 = LOW) 5 0 0 50 100 150 OUTPUT 1 LOAD CURRENT (mA) Ground Current vs. Output Current 50 Both Enabled 40 30 20 Both LDOs Active LDO1 = 150mA Output Current LDO2 Varied from 0 to Full Load 10 0 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA) 3.10 3.05 3.00 2.95 2.90 2.85 -40 -20 0 20 40 60 80 100120140 TEMPERATURE °C) ( 10M 20 10 5 Ground Current vs. Output Current Both Enabled 30 15 LDO2 Only LDO1 Disabled (VEN1 = LOW) 10 Both LDOs Active LDO2 = 300mA Output Current LDO1 Varied from 0 to Full Load 0 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA) 0 0 50 100 150 OUTPUT 1 LOAD CURRENT (mA) Output Voltage vs. Load Current Output Voltage vs. Load Current 2.600 2.595 2.590 2.585 2.580 0 25 50 75 100 125 150 OUTPUT 1 LOAD CURRENT (mA) Output Voltage 1 vs. Temperature 100µA load 40 2.605 2.95 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 3.15 50 LDO2 20 2.610 OUTPUT VOLTAGE (V) GROUND CURRENT (µA) 60 25 OUTPUT VOLTAGE (V) LDO1 30 60 2.90 2.870 2.865 2.860 2.855 2.850 2.845 2.840 2.835 2.830 2.825 2.820 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA) Output Voltage 2 vs. Temperature 100µA load 1.60 ENABLE THRESHOLD (V) 25 GROUND CURRENT (µA) GROUND CURRENT (µA) 35 30 Ground Current vs. Output Current GROUND CURRENT (µA) Ground Current vs. Output Current 35 2.85 2.80 2.75 2.70 2.65 -40 -20 0 20 40 60 80 100120140 TEMPERATURE °C) ( Enable Voltage Threshold vs. Supply Voltage 1.40 1.20 1.00 0.80 0.60 0.40 0.20 0.00 2.25 2.75 3.25 3.75 4.25 4.75 5.25 SUPPLY VOLTAGE (V) POR Delay 1M TIME (µs) 100k 10k 1k 100 CIN = 1µF COUT = 1µF ILOAD = 100µA 10 1 1 10 100 1k 10k 100k 1M POR SETTING CAP (pF) February 2006 7 M9999-022106 MIC2212 Micrel, Inc. Functional Characteristics Power-On Reset Characteristics VOUT2 (1V/div) POR VOUT1 (1V/div) (2V/div) VEN (2V/div) CIN = 1µF COUT = 1µF Ceramic CBYP = 0.01µF VIN = 3.8V VOUT2 (1V/div) Time (2ms/div) Load Transient Response (LDO 1) Load Transient Response (LDO 2) VOUT2 IOUT2 (100mV/div) (200mA/div) 150mA 100µA CIN = 1µF COUT = 1µF CBYP = 0.01µF VIN = VOUT +1V Time (4µs/div) M9999-022106 CIN = 1µF COUT = 1µF Ceramic CSET = 0.01µF CBYP = 0.01µF VIN = 5V Time (100µs/div) VOUT1 (100mV/div) VOUT2 (50mV/div) VOUT1 IOUT1 (50mV/div) (100mA/div) VOUT1 (2V/div) VEN (2V/div) Enable Characteristics 300mA 100µA CIN = 1µF COUT = 1µF CBYP = 0.01µF VIN = VOUT +1V Time (4µs/div) 8 February 2006 MIC2212 Micrel, Inc. Functional Diagram VIN OUT1 LDO1 EN1 LDO2 EN2 OUT2 POR & Del ay POR SET CBYP Reference GND MIC2212 Fixed Voltage Block Diagram Functional Description Input Capacitor Good bypassing is recommended from input to ground to help improve AC performance. A 1µF capacitor or greater located close to the IC is recommended. Bypass Capacitor The internal reference voltage of the MIC2212 can be bypassed with a capacitor to ground to reduce output noise and increase power supply rejection (PSRR). A quickstart feature allows for quick turn-on of the output voltage regardless of the size of the capacitor. The recommended nominal bypass capacitor is 0.01µF, but it can be increased without limit. Output Capacitor Each regulator output requires a 1µF ceramic output capacitor for stability. The output capacitor value can be increased to improve transient response, but performance has been optimized for a 1µF ceramic type 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 a X7R ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range. The MIC2212 is a high performance, low quiescent current power management IC consisting of two µCap low dropout regulators, a power-on reset (POR) circuit and an open-drain driver. The first regulator is capable of sourcing 150mA at output voltages from 1.25V to 5V. The second regulator is capable of sourcing 300mA of current at output voltages from 1.25V to 5V. The second regulator has a POR circuit that monitors its output voltage and indicates when the output voltage is within 5% of nominal. The POR offers a delay time that is externally programmable with a single capacitor to ground. Enable 1 and 2 The enable inputs allow for logic control of both output voltages with individual enable inputs. The enable input is active high, requiring 1.8V for guaranteed operation. The enable input is CMOS logic and cannot by left floating. Power-On Reset (POR) The power-on reset output is an open-drain N-Channel device, requiring a pull-up resistor to either the input voltage or output voltage for proper voltage levels. The POR output has a delay time that is programmable with a capacitor from the SET pin to ground. The delay time can be programmed to be as long as 1 second. The SET pin is a current source output that charges a capacitor that sets the delay time for the power-on reset output. The current source is a 1µA current source that charges a capacitor up from 0V. When the capacitor reaches 1.25V, the output of the POR is allowed to go high. February 2006 9 M9999-022106 MIC2212 Micrel, Inc. Package Information 10-Pin 3mm x 3mm MLF (ML) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2004 Micrel Incorporated M9999-022106 10 February 2006