MIC2212 Micrel 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 /RST Baseband µProcessor COUT = 1µF Ceramic SET GND Sets delay for POR MIC2212 Typical Cell Phone Application MicroLeadFrame and MLF are trademarks of Amkor Technology. Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com August 2004 1 M9999-080504 MIC2212 Micrel Ordering Information Full Part Number Manufacturing Part Number Voltage* (Vo1/Vo2) Junction Temp. Range Package MIC2212-GMBML 1.8V/2.8V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-1.85/2.85BML MIC2212-DNBML 1.85V/2.85V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-1.85/2.9BML MIC2212-DOBML 1.85V/2.9V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-2.6/2.8BML MIC2212-KMBML 2.6V/2.8V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-2.6/2.85BML MIC2212-KNBML 2.6V/2.85V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-2.7/2.8BML MIC2212-LMBML 2.7V/2.8V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-2.7/2.9BML MIC2212-LOBML 2.7V/2.9V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-2.8/2.6BML MIC2212-MKBML 2.8V/2.6V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-2.8/2.8BML MIC2212-MMBML 2.8V/2.8V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-2.8/3.0BML MIC2212-MPBML 2.8V/3.0V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-3.0/2.8BML MIC2212-PMBML 3.0V/2.8V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-3.3/1.8BML MIC2212-SGBML 3.3V/1.8V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-3.3/2.8BML MIC2212-SMBML 3.3V/2.8V –40°C to +125°C 10-Pin 3×3 MLF™ MIC2212-1.8/2.8BML * For other output voltage options, contact Micrel marketing. Voltage Code Adj. A 1.5 F 1.6 W 1.8 G 1.85 D 1.9 Y 2.0 H 2.1 E 2.5 J 2.6 K 2.7 L 2.8 M 2.850 N 2.9 O 3.0 P 3.1 Q 3.2 R 3.3 S 3.4 T 3.5 U 3.6 V Table 1. Voltage Codes M9999-080504 2 August 2004 MIC2212 Micrel 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 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 Output of Regulator 2: 300mA output current. 10 VOUT1 Output of Regulator 1: 150mA output current. EP GND August 2004 Pin Function No Connection. Power-On Reset Output: Open-drain output. Active low indicates an output undervoltage condition on regulator 2. Ground: Internally connected to the Exposed Pad. Connect externally to pin 6 of the IC. 3 M9999-080504 MIC2212 Micrel 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)1" square 2oz. copper ................. 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 Line Regulation(5) Load Regulation Typ Dropout Ground Pin Current Units +1.0 +2.0 % % 40 VIN = VOUT +1V to 5.5V –0.3 –0.6 IOUT = 100µA to 150mA (Regulator 1 and 2) ppm/C 0.02 0.3 0.6 %/V 0.2 1.0 % 1.5 % IOUT = 100µA to 300mA (Regulator 2) Voltage(6) Max 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 µA Ground Pin Current in Shutdown VEN ≤ 0.4V Ripple Rejection f = 1kHz; COUT = 1.0µF ceramic; CBYP = 10nF 60 dB f = 20kHz; COUT = 1.0µF ceramic; CBYP = 10nF 40 dB Current Limit Output Voltage Noise 2.0 µA VOUT = 0V (Regulator 1) 150 280 460 mA VOUT = 0V (Regulator 2) 300 450 700 mA COUT =1µF, CBYP = 0.01µF, 10Hz to 100kHz µVrms 30 Enable Input Enable Input Voltage Enable Input Current Logic Low (Regulator Shutdown) 0.6 V Logic High (Regulator Enabled) 1.8 V 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 POR Output VTH % High Threshold, % of nominal VOUT2 (Flag OFF) VOL POR Output Logic Low Voltage; IL = 250µA IPOR Flag Leakage Current, Flag OFF M9999-080504 4 –1 96 % 0.02 0.1 V 0.01 +1 µA August 2004 MIC2212 Parameter Micrel Conditions Min Typ Max Units SET Pin Current Source VSET = 0V 0.75 1.25 1.75 µA SET Pin Threshold Voltage POR = High SET Input 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. August 2004 5 M9999-080504 MIC2212 Micrel PSRR Output 1 PSRR Output 2 80 80 CBYP = 100nF CBYP = 100nF CBYP = 10nF 40 20 CBYP = 1nF VIN = VOUT + 1 IOUT = 300mA COUT = 1µF 0 0.01 1000 0.1 1 10 100 FREQUENCY (kHz) 1000 Spectral Noise Density Output 1 10E-6 100µA Load 1E-6 100E-9 COUT = 1µF C = 1µF IN CBYP = 0.01µF 10E-9 10 Dropout Characteristics Output 1 Spectral Noise Density Output 2 1k 100 10k 100k FREQUENCY (Hz) 1M Dropout Characteristics Output 2 3 3 2.5 2.5 10E-6 1E-6 100E-9 COUT = 1µF C = 1µF 2 1.5 100µA 150mA 1 0.5 IN OUTPUT (V) OUTPUT (V) 100µA Load 2 100µA 300mA 1.5 1 0.5 CBYP = 0.01µF 200 150 100 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 30 20 10 0 0 20 40 60 80 100 120 140 OUTPUT 1 LOAD CURRENT (mA) M9999-080504 30 20 10 1 2 3 4 5 SUPPLY VOLTAGE (V) 6 Ground Pin Current 60 50 40 30 20 10 0 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA) 6 1mA 50 100µA 40 0µA 30 20 10 Load on both outputs 0 140 160 40 40 100 120 50 Output 1 and 2 with 100µA load 0 0 60 GROUND CURRENT (µA) 60 GROUND CURRENT (µA) 50 50 60 80 50 300mA load 250 GROUND CURRENT (µA) 100 60 350 300 1 2 3 4 5 SUPPLY VOLTAGE (V) Ground Current vs. Supply Voltage Dropout Voltage Output 2 Dropout Voltage Output 1 150mA load 0 0 1 2 3 4 5 SUPPLY VOLTAGE (V) 20 40 0 0 1M GROUND PIN CURRENT (µA) DROPOUT VOLTAGE (mV) 150 100 1k 10k 100k FREQUENCY (Hz) -40 -20 0 10E-9 10 DROPOUT VOLTAGE (mV) SPECTRAL NOISE DENSITY (V/root Hz) 0.1 1 10 100 FREQUENCY (kHz) CBYP = 1nF 40 20 VIN = VOUT + 1 IOUT = 150mA COUT = 1µF 0 0.01 CBYP = 10nF 60 PSRR (dB) PSRR (dB) 60 SPECTRAL NOISE DENSITY (V/root Hz) Typical Characteristics TEMPERATURE (°C) August 2004 MIC2212 Micrel Typical Characteristics (cont.) GROUND CURRENT (µA) 25 LDO1 20 15 10 LDO1 Only LDO2 Disabled (VEN2 = LOW) 5 60 30 25 LDO2 20 15 10 5 LDO2 Only LDO1 Disabled (VEN1 = LOW) Ground Current vs. Output Current 50 Both Enabled 40 30 20 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) Ground Current vs. Output Current Output Voltage vs. Load Current Output Voltage vs. Load Current Both Enabled 40 30 Both LDOs Active LDO1 = 150mA Output Current LDO2 Varied from 0 to Full Load 10 2.870 2.605 2.865 2.860 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 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 3.15 Enable Voltage Threshold vs. Supply Voltage 2.95 100µA load OUTPUT VOLTAGE (V) 3.10 2.855 2.850 3.05 3.00 2.95 2.90 2.85 -40 -20 0 20 40 60 80 100120140 TEMPERATURE (°C) 2.90 1.60 100µA load ENABLE THRESHOLD (V) 20 2.610 OUTPUT VOLTAGE (V) 50 0 0 50 100 150 200 250 300 OUTPUT 2 LOAD CURRENT (mA) OUTPUT VOLTAGE (V) Ground Current vs. Output Current 0 0 50 100 150 OUTPUT 1 LOAD CURRENT (mA) OUTPUT VOLTAGE (V) GROUND CURRENT (µA) 30 60 GROUND CURRENT (µA) 35 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) 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 10M 1M TIME (µs) 100k 10k 1k 100 CIN = 1µF COUT = 1µF ILOAD = 100µA 10 1 1 August 2004 10 100 1k 10k 100k 1M POR SETTING CAP (pF) 7 M9999-080504 MIC2212 Micrel 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) VOUT1 (2V/div) VEN (2V/div) Enable Characteristics CIN = 1µF COUT = 1µF Ceramic CSET = 0.01µF CBYP = 0.01µF VIN = 5V Time (100µs/div) Time (2ms/div) Load Transient Response (LDO 1) Load Transient Response (LDO 2) 300mA VOUT2 IOUT2 (100mV/div) (200mA/div) 100µA CIN = 1µF COUT = 1µF CBYP = 0.01µF VIN = VOUT+1V VOUT1 (100mV/div) VOUT2 (50mV/div) VOUT1 IOUT1 (50mV/div) (100mA/div) 150mA Time (4µs/div) M9999-080504 100µA CIN = 1µF COUT = 1µF CBYP = 0.01µF VIN = VOUT+1V Time (4µs/div) 8 August 2004 MIC2212 Micrel Functional Diagram VIN OUT1 LDO1 EN1 OUT2 LDO2 EN2 POR & Delay POR SET CBYP Reference GND MIC2212 Fixed Voltage Block Diagram 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 quick-start 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. X7Rtype 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. Functional Description 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. August 2004 9 M9999-080504 MIC2212 Micrel Package Information 0.85 +0.15 —0.05 1.60 +0.15 —0.15 3.00 BSC. 0.80 +0.15 —0.15 1.50 BSC. 0.01 +0.04 —0.01 0.48 typ. PIN 1 ID 0.23 +0.07 —0.05 1 1 1.50 BSC. +0.15 2 1.15 —0.15 2 3.00 BSC. 3 2.30 +0.15 —0.15 3 0.20 dia 0.50 BSC. 0.40 +0.15 —0.05 TOP SEATING PLANE TERMINAL TIP BOTTOM 0.23 +0.07 —0.05 0.01 +0.04 —0.01 0.50 BSC. 0.50 BSC. TERMINAL TIP ODD TERMINAL SIDE EVEN TERMINAL SIDE 10-Lead MLF™ (ML) MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB USA http://www.micrel.com The information furnished by Micrel in this datasheet 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 at Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2004 Micrel, Incorporated. M9999-080504 10 August 2004