PL2211 PICSEMI | Alldatasheet

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Technical content

300mA Low Noise Dual LDO PL2211

FEATURES

„ Guaranteed 300mA load/ LDO „ Ultra low output noise: 100µVRMS „ Low ground current: 200µA „ Very low dropout: 180mV @300mA „ Zero shutdown supply current „ TTL-logic-controlled independent enable input „ Thermal and current limit protections „ Low ESR capacitor compatibility to achieve „ Ultra low droop load transient response „ Ultra fast line transient response „ Tiny 10pin 3mm x 3mm MLF (10L-TDLMF ) package

APPLICATIONS

„ Cellular and cordless phones „ Wireless LAN cards „ Palmtop computers „ Personal communication equipment

DESCRIPTION

The PL2211 is a d ual CMOS lo w dropout linear regulator with ultra-low-noise output, very lo w dropout voltage and very low ground current. The PL221 1 op erates f rom a 2.5V to 5 .5V input vo ltage range and delivers up to 300mA, with low dropout of 200 mV at 300mA. The other features of PL2211 include short- circuit protection and thermal-shutdown protection. The PL22 11 i s d esigned esp ecially f or battery-powered portable devices. Its low noise feature makes PL2211 ideal for noise-sensi tive pers onal communication applications . Other key a pplication a reas f or PL2211 al so i nclude palmtop computers, PCMCIA cards and WLAN cards. The PL 2211 has a special fe ature t hat if both EN pin is enabled si multaneously t he output of L DO2 del ays 20us from out put of LD O1 w hich hel ps t o m inimize i nrush startup current. The PL2211 is av ailable in tiny 10pin 3mm x 3mm MLF (10L-TDLMF) package with fixed output voltage versions. TYPICAL APPLICATION Power IC Ltd. - 1 - www.picsemi.com Version 1.0 Mar 4, 2007

300mA Low Noise Dual LDO PL2211 MARKING DIAGRAMS PIN CONFIGURATION

ORDERING INFORMATION

Part Number Output Voltage Marking Package PL2211 – 15VZ 1.5 DBAMW 10L-TDLMF PL2211 – 15UZ 1.5 DBBMW 10L-TDLMF PL2211 – 18VZ 1.8 DBCMW 10L-TDLMF PL2211 – 18UZ 1.8 DBDMW 10L-TDLMF PL2211 – 25VZ 2.5 DBEMW 10L-TDLMF PL2211 – 25UZ 2.5 DBFMW 10L-TDLMF PL2211 – 27VZ 2.7 DBGMW 10L-TDLMF PL2211 – 27UZ 2.7 DBHMW 10L-TDLMF PL2211 – 28VZ 2.8 DBIMW 10L-TDLMF PL2211 – 28UZ 2.8 DBJMW 10L-TDLMF PL2211 – 30VZ 3.0 DBKMW 10L-TDLMF PL2211 – 30UZ 3.0 DBLMW 10L-TDLMF PL2211 – 33VZ 3.3 DBMMW 10L-TDLMF PL2211 – 33UZ 3.3 DBNMW 10L-TDLMF Note 1: Contact the factory for other output voltages that are not in the above table PIN DESCRIPTIONS Name Pin NO. Type Function IN 1 Supply Supply voltage. 2.5V ~ 5.5V. EN1 2 Logic input 1 Enable/Shutdown. CMOS compatible input. Logic ‘H’ : enable, logic ‘L’ : shutdown. EN2 3 Logic input 2 Enable/Shutdown. CMOS compatible input. Logic ‘H’ : enable, logic ‘L’ : shutdown. BYP 4 Bypass Reference voltage bypass pin. Connect 0.01uF ≦ CBYP ≦ 0.1uF to GND to reduce output noise. May be left open. GND 6 Ground Ground pin OUT2 9 Analog output2 Regulator 2 Output. OUT1 10 Analog output1 Regulator 1 Output. Power IC Ltd. - 2 - www.picsemi.com Version 1.0 Mar 4, 2007

300mA Low Noise Dual LDO PL2211 BLOCK DIAGRAM Power IC Ltd. - 3 - www.picsemi.com Version 1.0 Mar 4, 2007

300mA Low Noise Dual LDO PL2211 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VIN DC Supply Voltage at Pin 1 -0.3 to +6.0 V VEN Enable Input Voltage at Pin 2 and Pin 3 -0.3 to +6.0 V PD Continuous Power Dissipation Internally limited W TSTG Storage Temperature Range -65 to +150 ℃ RθJA Thermal Resistance, Junction-To-Air 235 ℃/W TJ,MAX Operating Junction Temperature -40 to +125 ℃ TL Lead Temperature (Soldering, 5sec) 260 ℃ ESD ESD Capability, HBM model 2 kV RECOMMENDED OPERATING CONDITIONS Symbol Parameter Value Unit VIN DC Supply Voltage at Pin 1 +2.5 to 5.5 V VEN Enable Input Voltage at Pin 2 and Pin 3 0 to VIN V TA Operating Ambient Temperature -40 to +85 ℃

ELECTRICAL CHARACTERISTICS

(VIN=VOUT(NOMINAL)+1V or 2.5V (whichever is greater), VEN=VIN, CIN=COUT=1µF, IO=1mA, TA=25°C, unless otherwise noted.) Symbol Parameter Test Conditions Min. Typ. Max. Unit VIN Supply Voltage 2.5 5.5 V ∆VOUT Output Voltage Accuracy IO = 1mA ( both regulator ) -1.0 1.0 % ∆Vload Load Regulation IO=1mA to 300mA ( both regulator ) 0.5 % ∆Vl LINE Line Regulation dVOUT/( dVIN*VOUT(NOMINAL) )*100% VIN =VOUT(NOMINAL) +0.1V (or 2.5V, whichever is greater) to 5.5V, IO=1mA ( both regulator ) 0.05 %/V ILOAD = 300mA ( both regulator ) 180 220 mV VDP Dropout Voltage (Note 1) ILOAD = 100mA ( both regulator ) 80 100 mV IO Maximum Output Current Continuous 300 mA RMS VIN-VOUT =1.3V ( regulator 1 ) 350 600 mA ILIM Current Limit/Output Current VIN-VOUT =1.3V ( regulator 2 ) 350 600 IQ Standby Current VEN = 0V 0.02 1 µA IG Ground pin current ILOAD1 = ILOAD2 =1mA ( both regulator active) 200 300 µA PSRR f = 100Hz, Cout= 1µF, Cbyp=10nF 75 dB PSRR Ripple Rejection, IOUT = 10mA, f = 10KHz, Cout= 1µF, Cbyp=10nF 70 dB Output voltage noise COUT = 1µF, CBYP = 10nF, F = 10Hz to 100K Hz (Vp-p/2/√ 2) 100 µVRMS Thermal Shutdown Temperature 165 °C Thermal Shutdown Hysteresis 20 °C VIH Logic Input High Voltage (EN) ( both regulator ) 1.2 V VIL Logic Input Low Voltage (EN\\) ( both regulator ) 0.4 V IEN Logic Input Current (SHDN\\) ( both regulator ) -1 1 µA Note 1: The Dropout Voltage is defined as VIN - VOUT, when VOUT is 2% below the value of VOUT measured for VIN=VOUT(nominal)+1V. Power IC Ltd. - 4 - www.picsemi.com Version 1.0 Mar 4, 2007

300mA Low Noise Dual LDO PL2211 OPERATION DESCRIPTION The PL2211 ar e ultra-low-noise, low-d ropout, l ow- quiescent c urrent l inear re gulators designed for space- restricted applications. These devices can supply loads up to 300mA. As shown in the Block Diagram, the PL2211 consists of a highly accurate band gap core, noise bypass circuit, er ror amplifier, P-c hannel pass transistor and an internal fee dback v oltage divider. T he 1.0V ba nd gap reference is c onnected t o th e er ror am plifier’s in verting input. Th e erro r am plifier co mpares this refere nce with the feedback voltage and amplifies the difference. If th e feedback voltage is lower t han the reference voltage, the pass tran sistor g ate is p ulled low. Th is allows m ore current t o pass t o t he output an d in creases th e output voltage. I f t he feed back voltage i s t oo high, t he pass transistor g ate is p ulled high, allowing less cu rrent to pass t o t he output. The output voltage i s feed back through an internal resistor voltage divider connected to the OUT pin. An external bypass capacitor connected to BYP re duces n oise at t he o utput. A dditional blocks include a cu rrent li miter, ov er tem perature protection, and shutdown logic. Internal P-Channel Pass Transistor The PL2211 feature a 1Ω (typ) P-channel MOSFET pass transistor. This provides several advantages over sim ilar designs using a PNP pass transistor, i ncluding l onger battery life. Th e P-ch annel M OSFET re quires no base drive, which considerably red uces qu iescent curren t. PNP-based regulators waste considera ble current i n dropout when the pass transistor saturates. They also use high base-drive current under heavy loads. The PL2211 does not su ffer from t hese p roblems and c onsume onl y 200µA of quiescent current in light load. Current Limit The PL221 1 in cludes a curren t li miter. It m onitors th e output c urrent and co ntrols t he pa ss t ransistor’s gate voltage to limit th e ou tput cu rrent under 550mA (typ). The o utput can be shorted to gr ound f or an indefinite amount of time without damaging the part. Enable Input The PL2211 features a n acti ve-high En able in put (EN) pin th at allows on /off con trol o f t he regulator. Th e PL2211 bias current reduces to less than microampere of leakage current when it is shu tdown. The Enable input is TTL/CMOS compatible threshold for simple logic interfacing. When EN is ‘H,’ th e ou tput vo ltage startup rising t ime i s 35 us t ypically at 300mA output c urrent. Connect EN pin to IN pin for normal operation Under Voltage Lockout When t he inpu t supp ly go es to o low (below 2.0V ) th e PL2211 produces an in ternal UV LO (under vo ltage lockout) si gnal t hat ge nerates a fa ult si gnal an d shuts down t he c hip. T his m echanism pr otects t he c hip from producing false logic due to low input supply. Quick Charging Mode The PL2211 has a quick charge block to get the reference up very quickly by charging the BYP capacitor with very high current when the chip comes out of shut down. This quick c harge block st ops c harging t he B YP ca pacitor when the reference reaches 95% of its nominal value and then t he ch ip switches out of qu ick ch arging m ode t o normal operating mode. Over Temperature Protection Over tem perature protection li mits t otal power dissipation i n t he PL2211. When t he junction temperature e xceeds T j= + 155°C, th e therm al sen sor signals t he shutdown l ogic an d t urns off t he pass transistor. The thermal sensor turns the pass transistor on again after the IC’s junction temperature drops by 15°C, resulting in a pulsed output during co ntinuous th ermal- overload conditions. Thermal-Overload protection is design to pro tect t he PL2211 i n th e ev ent of a fault con dition. For con tinual operation, do not exceed the absolute maximum junction temperature rating of Tj = +150°C. Operating Region and Power Dissipation The PL2211 maximum power dissipation depends on 1) the thermal resistance of the case and circuit board, 2) the temperature differe nce between the die junction and ambient, and 3) the rate of airflow. The power dissipation across the device is: P = Iout ( Vin – Vout ) The maximum power dissipation is: Pmax = (Tj – Ta) / (θjc + θca) Where (Tj – Ta) is the temperature difference between the PL 2211 die junction a nd the am bient air; θjc is th e thermal resistance of the package; and θca is the thermal Power IC Ltd. - 5 - www.picsemi.com Version 1.0 Mar 4, 2007

300mA Low Noise Dual LDO PL2211 resistance through the PC board, copper traces, and other materials to the surrounding air. The GND pin of the PL2211 performs the dual function of providing an electr ical co nnection to g round and channeling heat away. Connect t he G ND pin t o ground using a large pad or ground plane. Noise Reduction For t he PL2211, an ex ternal 0 .01µF by pass capacitor between BY P and GND w ith inno vative noise bypass scheme red uces ou tput noises dram atically, ex hibiting 100µVrms of output voltage noise with Cbyp = 0.01µF and Cout = 1µF.

APPLICATION INFORMATION

Capacitor Selection and Regulator Stability Use a 1 µF cap acitor on t he PL22 11 input an d a 1 µF capacitor on the output. Large input capacitor values and lower ESR s provide better noi se rejection a nd l ine- transient response. Reduce output noise and improve load-transient response, stability, an d power-supp ly rej ection by u sing larg e output ca pacitors. Note that som e ceram ic dielectrics exhibit larg e cap acitance an d ESR variation with temperature. With dielectrics suc h as Z5U and Y5V, it may be necessary to use a 1µF or larger output capacitor to en sure stabilit y at tem peratures b elow -10°C. W ith X7R or X5R dielectrics, 1µF is sufficient at all operating temperatures. A gra ph of the region of stable Cout ESR vs. load current is shown in the Typical Characteristics. Use a 0.01µF by pass capac itor at B YP f or l ow-output voltage noi se. The leakage cu rrent go ing into t he B YP pin should be less than 10nA. Noise, PSRR, and Transient Response The PL2211 are designed to deliver ultra-low noise and high PSR R, a s wel l as l ow dr opout an d low quiescent currents in bat tery-powered systems. The PL2211 PSRR is 70 dB at 100Hz an d 60dB at 10 kHz ( see t he P ower- Supply R ejection R atio vs. Fre quency g raph i n t he Typical Characteristic). When operating from sou rces ot her t han bat teries, improved supp ly-noise rejection an d tr ansient r esponse can be achieved by increasing the values of the input and output bypass cap acitors, an d throug h p assive filtering techniques. The Typical Characteristics show the PL2211 line and load transient responses. Dropout Voltage A reg ulator’s minimum d ropout vo ltage determines th e lowest usable supply voltage. In battery-powered systems, this d etermines th e u seful en d-of-life b attery v oltage. Because t he PL2211 use a P-c hannel M OSFET pass transistor, their dropout voltage is a fu nction of drain-to- source on resistan ce (RDS(on)) m ultiplied b y th e lo ad current (see the Typical Characteristics). Power IC Ltd. - 6 - www.picsemi.com Version 1.0 Mar 4, 2007

300mA Low Noise Dual LDO PL2211

PACKAGE INFORMATION

5-pin SOT-25 Outline Dimension 1 3 E e D b A θ θ R L θ Detail A Detail A c Dimension: A 1.45 0.057 A1 0.15 0.006 b 0.30 0.50 0.011 0.020 c 0.08 0.22 0.003 0.009 D 2.90 0.114 E 2.80 0.110 E1 1.60 0.063 e 0.95 0.037 e1 1.90 0.075 L1 0.60 0.024 L2 0.25 0.010 R 0.10 0.004 R1 0.10 0.25 0.004 0.010 Power IC Ltd. - 7 - www.picsemi.com Version 1.0 Mar 4, 2007

300mA Low Noise Dual LDO PL2211 3-PIN SOT-23 OUTLINE DIMENSION c D E A θ e b θ L2R Detail A L Detail A Dimension: A 1.45 0.057 A1 0.15 0.006 b 0.30 0.50 0.011 0.020 c 0.08 0.22 0.003 0.009 D 2.90 0.114 E 2.80 0.110 E1 1.60 0.063 e 0.95 0.037 e1 1.90 0.075 L1 0.60 0.024 L2 0.25 0.010 R 0.10 0.004 R1 0.10 0.25 0.004 0.010 Power IC Ltd. - 8 - www.picsemi.com Version 1.0 Mar 4, 2007

300mA Low Noise Dual LDO PL2211 DISCLAIMERS LIFE SUPPORT Power IC’s products are not designed to be used as components in devices intended to support or sustain human life. Use of Power IC’s products in co mponents intended for surgical implant into the body, or other applications in which failure of Power IC’s products could create a situation where personal death or injury may occur, is not authorized without the express written approval of Power IC’s Chief Ex ecutive Officer. Po wer IC will no t be h eld liable fo r an y damages or clai ms resulting from the use of its products in medical applications. MILITARY Power IC's products are not designed for use in military applications. Use of Power IC’s products in military applications is not authorized without the express written approval of Power IC’s Chief Executive Officer. Power IC will not be held liable for any damages or claims resulting from the use of its products in military applications. RIGHT TO MAKE CHANGES Power IC reserves the right to change this document and/or this product without notice. Customers are advised to consult their Power IC sales representative before ordering. Power IC Ltd. - 9 - www.picsemi.com Version 1.0 Mar 4, 2007