MIC2210 Dual µCap LDO with Open-Drain Driver General Description Features The MIC2210 is a dual µCap, low dropout regulator with an open-drain driver and power-on reset circuit. The first regulator is capable of sourcing 150mA, while the second regulator can source up to 300mA and includes a poweron reset function. The open-drain output is capable of sinking 150mA for LED backlighting applications. Ideal for battery operated applications, the MIC2210 offers 1% accuracy, extremely low dropout voltage (80mV @ 100mA), and extremely low ground current, only 48µA total. Equipped with a TTL logic compatible enable pin*, the MIC2210 can be put into a zero-off-mode current state, drawing no current when disabled. The MIC2210 is a µCap design, operating with very small ceramic output capacitors for stability, reducing required board space and component cost. The MIC2210 is available in fixed output voltages in the 10-pin 3mm × 3mm MLF® leadless package. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. • 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 • 1 Open-drain driver • 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 *For each output. Applications • Cellular/PCS phones • Wireless modems • PDAs ___________________________________________________________________________________________________________ Typical Application LED x10 Keyboard Backlight MIC2210-xx_ML CBYP VIN VOUT1 Audio Amp EN1 VOUT2 Baseband IC EN2 ERR CBYP DRV SW GND MIC2210 Typical Cell Phone Application MLF and MicroLeadFram 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 November 2006 1 M9999-112006 Micrel, Inc. MIC2210 Ordering Information Part Number Full Manufacturing Pb-Free Voltage* (Vo1/Vo2) Junction Temp. Range Package MIC2210-1.5/2.8BML MIC2210-FMBML MIC2210-FMYML 1.5V/2.8V –40° to +125°C 10-Pin 3x3 MLF® MIC2210-1.8/3.3BML MIC2210-GSBML MIC2210-GSYML 1.8V/3.3V –40° to +125°C 10-Pin 3x3 MLF® MIC2210-2.8/1.6BML MIC2210-MWBML MIC2210-MWYML 2.8V/1.6V –40° to +125°C 10-Pin 3x3 MLF® MIC2210-2.8/3.0BML MIC2210-MPBML MIC2210-MPYML 2.8V/3.0V –40° to +125°C 10-Pin 3x3 MLF® MIC2210-3.0/3.3BML MIC2210-PSBML MIC2210-PSYML 3.0V/3.3V –40° to +125°C 10-Pin 3x3 MLF® MIC2210-3.3/3.3BML MIC2210-SSBML MIC2210-SSYML 3.3V/3.3V –40° to +125°C 10-Pin 3x3 MLF® * For other output voltage options, contact Micrel for details. 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 2.85 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 November 2006 2 M9999-112006 Micrel, Inc. MIC2210 Pin Configuration VIN 1 10 VOUT1 EN1 2 9 VOUT2 EN2 3 8 ERR BYP 4 7 DRV SW 5 6 GND 10-Pin 3mm x 3mm MLF® (ML) (Top View) Pin Description Pin Number 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 SW Active high signal drives open-drain N-channel MOSFET. 6 GND Ground: Connect externally to Exposed Pad. 7 DRV Open-Drain Output: Capable of sinking 150mA. 8 ERR Error Flag Output: Open-drain output. Active low indicates an output undervoltage condition on regulator 2. 9 VOUT2 10 VOUT1 EP GND November 2006 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. 3 M9999-112006 Micrel, Inc. MIC2210 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) ............................................... 0V to 7V Enable Voltage (VEN).............................................. 0V to 7V Power Dissipation (PD) ........................... Internally Limited(3) Lead Temperature (soldering, 5 sec.)........................ 260°C Junction Temperature (TJ) ........................–40°C to +125°C Storage Temperature (Ts) .........................–65°C to +150°C Supply Voltage (VIN)....................................... 2.25V to 5.5V Enable 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 + 1V for higher output of the regulator pair; COUT = 1µF, IOUT = 100µA; TJ = 25°C, bold values indicate –40°C< TJ < +125°C, unless noted. Parameter Condition Output Voltage Accuracy Variation from nominal VOUT Min Typ –1 –2 Output Voltage Temp. Coefficient –0.3 –0.6 VIN = VOUT +1V to 5.5V Load Regulation IOUT = 100µA to 150mA (Regulator 1 and 2) +1 +2 % % ppm/C 0.02 +0.3 +0.6 %/V %/V 0.2 1 % 1.5 % IOUT = 100µA to 300mA (Regulator 2) Ground Pin Current Units 40 Line Regulation; Note 5 Dropout Voltage; Note 6 Max IOUT = 150mA (Regulator 1 and 2) 120 190 250 mV mV IOUT = 300mA (Regulator 2) 240 340 420 mV mV IOUT1 = IOUT2 = 0µA 48 65 80 µA µA IOUT1 = 150mA & IOUT2 = 300mA 60 µA Ground Pin Current in Shutdown VEN ≤ 0.4V Ripple Rejection f = 1kHz; COUT = 1.0µF ceramic; CBYP = 10nF Current Limit VOUT = 0V (Regulator 1) 150 280 460 mA VOUT = 0V (Regulator 2) 300 450 700 mA 2 60 f = 20kHz; COUT = 1.0µF ceramic; CBYP = 10nF Output Voltage Noise dB 40 COUT =1µF, CBYP =0.01µF, 10Hz to 100kHz µA dB 30 µVrms Enable Output Enable Input Voltage Logic Low (Regulator Shutdown) Logic High (Regulator Enabled) Enable Input Current 0.6 V V 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 ERROR Flag Output (LDO2) VERR % High Threshold, % of nominal VOUT2 (Flag OFF) VOL Flag Output Logic Low Voltage; IL = 100µA IERR Flag Leakage Current, Flag OFF November 2006 4 –1 96 % 0.02 0.1 mV 0.01 +1 µA M9999-112006 Micrel, Inc. Parameter MIC2210 Condition Min Typ Max Units 0.2 0.5 0.6 V 0.01 +1 µA 0.6 V DRV Output Voltage Low IDRV = 150mA Leakage Current IDRV = 0mA, VDRV = 5.5V, SW = 0V SW Input Voltage Logic Low (DRV Shutdown) SW Input Current –1 Logic High (DRV Enabled) 1.8 V VIL < 0.6V (DRV Shutdown) –1 0.01 +1 µA VIH > 1.8V (DRV Enabled) –1 0.01 +1 µA 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. 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 1Vdifferential. 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. November 2006 5 M9999-112006 Micrel, Inc. MIC2210 Typical Characteristics November 2006 6 M9999-112006 Micrel, Inc. MIC2210 Typical Characteristics (cont.) November 2006 7 M9999-112006 Micrel, Inc. MIC2210 Functional Characteristics November 2006 8 M9999-112006 Micrel, Inc. MIC2210 Functional Diagram OUT1 VIN LDO1 EN1 OUT2 LDO2 EN2 CBYP Error Comparator ERR DRV Reference SW GND NGND MIC2210 Fixed Voltage Block Diagram November 2006 9 M9999-112006 Micrel, Inc. MIC2210 Bypass Capacitor The internal reference voltage of the MIC2210 can be by-passed 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. Functional Description The MIC2210 is a high performance, low quiescent current power management IC consisting of two µCap low dropout regulators, 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. An open-drain driver completes the power management chipset, offering the capability of driving LEDs for keypad backlighting in applications such as cell phones. 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. 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. Open-Drain Driver (DRV) The drive (DRV) pin is an open-drain output capable of sinking 150mA of current. This output is controlled by a logic level input, the switch (SW) pin. The switch pin is an active high input and cannot be left floating. 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. November 2006 10 M9999-112006 Micrel, Inc. MIC2210 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 The 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. © 2002 Micrel, Incorporated. November 2006 11 M9999-112006