CAT6221 300mA CMOS Dual LDO Regulator FEATURES DESCRIPTION Two outputs with guaranteed 300mA peak output current The 300mA CMOS Dual LDO CAT6221 combines in a single TSOT-23 6-lead package two low dropout regulators (LDO), each with its own enable pin. Low dropout voltages of 210mV typical at 300mA The regulator outputs drive loads up to 300mA. By design, the dual LDO provides fast response time during load current and line voltage changes. Stable with ceramic output capacitors Independent enable pins Under voltage lockout Each LDO is optimized for low noise and high crosstalk isolation. With zero shut down current and a low quiescent current of 100μA, the dual LDO is ideal for battery-operated devices with supply voltage from 2.3V to 5.5V. No-load ground current of 100μA typical Full-load ground current of 160μA typical ±1.0% output voltage initial accuracy ±2.0% accuracy over temperature The dual LDO offers 1% initial accuracy and very low dropout voltage, typical 210mV at 300mA. Stable operation is provided with small 1μF ceramic output capacitors, reducing required board space and component cost. “Zero” current shutdown mode Fold-back current limit and thermal protection TSOT-23 6-lead, 0.8mm height package APPLICATIONS Other features include fold-back current limit and thermal protection. Cellular phones The dual LDO is available in the tiny 6-lead TSOT-23 package with a maximum height of 0.8mm. Battery-powered devices Consumer Electronics For Ordering Information details, see page 10. PIN CONFIGURATION TYPICAL APPLICATION CIRCUIT 6-Lead TSOT-23 (0.8mm height) VIN VIN EN1 1 VIN 2 EN2 3 6 VOUT1 5 GND 4 VOUT2 2.3V to 5.5V 1µF CAT4201 OFF ON OFF ON COUT1 CAT6221 EN1 VOUT2 EN2 GND VOUT1 1µF VOUT2 COUT2 1µF Top View © Catalyst Semiconductor, Inc. Characteristics subject to change without notice VOUT1 CIN 1 Doc. No. MD-10001 Rev. A CAT6221 PIN DESCRIPTIONS BLOCK DIAGRAM Pin # Name Function 1 EN1 Enable input (active high) for VOUT1. 2 VIN Supply voltage input. 3 EN2 Enable input (active high) for VOUT2. 4 VOUT2 LDO Output Voltage 2. 5 GND Ground reference. 6 VOUT1 LDO Output Voltage 1. VIN VIN VOUT1 LDO1 EN1 VOUT1 EN1 Reference Shutdown Switch VOUT2 PIN FUNCTION LDO2 EN2 VIN is the supply pin for the LDO. A small 1μF ceramic bypass capacitor is required between the VIN pin and ground near the device. When using longer connections to the power supply, CIN value can be increased without limit. The operating input voltage range is from 2.3V to 5.5V. VOUT2 EN2 Shutdown Switch GND EN1 & 2 are the enable control logic (active high) for the regulator outputs. Figure 2. CAT6221 Functional Block Diagram VOUT1 & 2 are the LDO regulator outputs. A small 1μF ceramic bypass capacitor is required between the VOUT pins and ground. For better transient response, its value can be increased to 4.7μF. On each output, a 250Ω internal shutdown switch discharges the output capacitor in the no-load condition. GND is the ground reference for the LDO. The pin must be connected to the ground plane on the PCB. The capacitor should be located near the device. For the TSOT23 6-lead package, a continuous 300mA output current for both LDOs may turn-on the thermal protection. ABSOLUTE MAXIMUM RATINGS (1) Parameter VIN VEN, VOUT Junction Temperature, TJ Power Dissipation, PD Storage Temperature Range, TS Lead Temperature (soldering, 5 sec.) ESD Rating (Human Body Model) Rating 0 to 6.5 -0.3 to VIN+0.3 +150 Internally Limited (2) -65 to +150 260 3 Unit V V °C mW °C °C kV RECOMMENDED OPERATING CONDITIONS (3) Parameter Range VIN 2.3 to 5.5 VEN 0 to VIN Junction Temperature Range, TJ -40 to +125 235 Package Thermal Resistance (TSOT23), θJA Typical application circuit with external components are shown on page 1. Unit V V °C °C/W Notes: (1) Exceeding maximum rating may damage the device. (2) The maximum allowable power dissipation at any TA (ambient temperature) is PDmax = (TJmax – TA) / θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. (3) The device is not guaranteed to work outside its operating rating. Doc. No. MD-10001 Rev. A 2 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT6221 ELECTRICAL OPERATING CHARACTERISTICS (1) VIN = VOUT + 1.0V, VEN = High, IOUT = 100µA, CIN = COUT = 1µF, ambient temperature of 25ºC (over recommended operating conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range. Symbol Parameter Conditions Min VOUT-ACC Initial accuracy -1.0 -2.0 -0.2 -0.4 TCOUT Output Voltage Accuracy Output Voltage Temp. Coefficient VR-LINE Line Regulation VIN = VOUT + 1.0V to 5.5V VR-LOAD Load Regulation IOUT = 100μA to 300 mA VDROP Dropout Voltage (2) IOUT = 300mA 210 100 55 PSRR Power Supply Rejection Ratio ISC Output short circuit current limit TON Turn-On Time eN Output Noise Voltage (3) ROUT-SH Shutdown Switch Resistance VIN-UVLO Under voltage lockout threshold ESR COUT equivalent series resistance +1.0 +2.0 % ppm/ºC +0.2 +0.4 1.5 2 280 350 140 %/V % mV 75 µA 90 One LDO Enabled IOUT = 300mA Shutdown Ground Current Unit 160 One LDO Enabled IOUT = 0μA IGND-SD Max 170 Both LDOs Enabled IOUT = 300mA Ground Current 40 ±0.1 0.9 Both LDOs Enabled IOUT = 0μA IGND Typ 85 2 VEN < 0.4V 4 µA f = 1kHz 60 f = 20kHz 45 VOUT = 0V 130 mA 150 µs 95 µVrms 250 Ω BW = 10Hz to 100kHz dB 2.15 5 V 500 mΩ 0.4 V V Enable Input (EN1, EN2) VHI VLO Logic High Level Logic Low Level IEN Enable Input Current VIN = 2.3 to 5.5V VIN = 2.3 to 5.5V 1.8 VEN = 0.4V 0.05 1 VEN = VIN 0.1 1 µA Thermal Protection TSD THYS Thermal Shutdown Thermal Hysteresis 160 10 ºC ºC . Notes: (1) Specification for 2.8V output version unless specified otherwise. (2) 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. During test, the input voltage stays always above the minimum 2.3V. (3) Specification for 1.8V output version. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 3 Doc. No. MD-10001 Rev. A CAT6221 TYPICAL CHARACTERISTICS (shown for 2.8V/1.8V outputs version) VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified. Output Voltage 1 vs. Temperature Output Voltage 2 vs. Temperature Load Regulation VOUT1 Load Regulation VOUT2 Ground Current (EN2 = GND) Ground Current (EN1 = GND) Doc. No. MD-10001 Rev. A 4 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT6221 TYPICAL CHARACTERISTICS (shown for 2.8V/1.8V outputs option) VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified. Ground Current (EN2 = GND) Ground Current (EN1 = GND) Output 1 Dropout Characteristics Ground Current vs. Input Voltage Output Voltage 1 vs. Load Current 1 Output Voltage 2 vs. Load Current 2 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 5 Doc. No. MD-10001 Rev. A CAT6221 TYPICAL CHARACTERISTICS (shown for 2.8V/1.8V outputs option) VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified. Line Regulation VOUT2 Line Regulation VOUT1 PSRR 1 & 2 vs. Frequency (30mA Load) Doc. No. MD-10001 Rev. A 6 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT6221 TRANSIENT CHARACTERISTICS (shown for 2.8V/1.8V outputs option) VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified. Note: All transient characteristics are generated using the evaluation board CAT6221EVAL1. Enable Turn-On (100µA Loads) Enable Turn-Off (100µA Loads) Enable Turn-On (300mA/100μA Loads) Enable Turn-Off (300mA/100µA Loads) Enable Turn-On (100μA/300mA Loads) © Catalyst Semiconductor, Inc. Characteristics subject to change without notice Enable Turn-Off (100μA/300mA Loads) 7 Doc. No. MD-10001 Rev. A CAT6221 TRANSIENT CHARACTERISTICS (shown for 2.8V/1.8V outputs option) VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified. Note: All transient characteristics are generated using the evaluation board CAT6221EVAL1. VOUT2 Load Transient Response (0.1 to 300mA) VOUT1 Load Transient Response (0.1 to 300mA) Line Transient Response (0.1mA Loads) Line Transient Response (0.1/100mA Loads) Line Transient Response (100/0.1mA Loads) Separate Enable Operation (100mA Loads) Doc. No. MD-10001 Rev. A 8 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT6221 PACKAGE OUTLINE DRAWING TSOT-23 6-Lead 0.8mm (TD) (1)(2) SYMBOL D MIN NOM A e 1.00 A1 0.01 0.05 0.10 A2 0.80 0.87 0.90 b 0.30 c 0.12 D E1 E MAX 0.45 0.15 0.20 2.90 BSC E 2.80 BSC E1 1.60 BSC e 0.95 TYP L 0.30 L1 0.40 0.50 0.60 REF L2 0.25 BSC θ 0º 8º TOP VIEW A2 A b θ L A1 c L1 SIDE VIEW L2 END VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters, angles in degrees. (2) Complies with JEDEC standard MO-193. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 9 Doc. No. MD-10001 Rev. A CAT6221 EXAMPLE OF ORDERING INFORMATION (1)(2)(3)(5) Prefix Device # CAT 6221 -MG TD -G Package TD: TSOT-23 Lead Finish G: NiPdAu Product Number 6221 VOUT Voltage (4) See table below for Voltage Combinations Company ID Suffix Tape & Reel T: Tape & Reel 3: 3000 Units/Reel VOUT Voltage Combination(4) Package Quantity per Reel CAT6221-JFTD-G 2.5V / 1.5V TSOT-23 3000 CAT6221-JGTD-G 2.5V / 1.8V TSOT-23 3000 CAT6221-JLTD-G 2.5V / 2.7V TSOT-23 3000 CAT6221-JPTD-G 2.5V / 3.0V TSOT-23 3000 CAT6221-MFTD-G 2.8V / 1.5V TSOT-23 3000 CAT6221-MGTD-G 2.8V / 1.8V TSOT-23 3000 CAT6221-MLTD-G 2.8V / 2.7V TSOT-23 3000 CAT6221-MPTD-G 2.8V / 3.0V TSOT-23 3000 CAT6221-PFTD-G 3.0V / 1.5V TSOT-23 3000 CAT6221-PGTD-G 3.0V / 1.8V TSOT-23 3000 CAT6221-PLTD-G 3.0V / 2.7V TSOT-23 3000 CAT6221-PPTD-G 3.0V / 3.0V TSOT-23 3000 CAT6221-SFTD-G 3.3V / 1.5V TSOT-23 3000 CAT6221-SGTD-G 3.3V / 1.8V TSOT-23 3000 CAT6221-SLTD-G 3.3V / 2.7V TSOT-23 3000 CAT6221-SPTD-G 3.3V / 3.0V TSOT-23 3000 Part Number T3 Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu pre-plated (PPF) lead frames. (3) The device used in the above example is a CAT6221-MGTD-GT3 (VOUT1 = 2.8V, VOUT2 = 1.8V, in a TSOT-23 package, NiPdAu, Tape and Reel). (4) For other voltage combinations, please contact your nearest Catalyst Semiconductor Sales office. (5) Top marking for CAT6221 is T3YM (Y = Year, M = Month). Doc. No. MD-10001 Rev. A 10 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice REVISION HISTORY Date 10/10/2007 Rev. A Reason Initial Release Copyrights, Trademarks and Patents © Catalyst Semiconductor, Inc. Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: Adaptive Analog™, Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™, Quad-Mode™ and Quantum Charge Programmable™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete. Catalyst Semiconductor, Inc. Corporate Headquarters 2975 Stender Way Santa Clara, CA 95054 Phone: 408.542.1000 Fax: 408.542.1200 www.catsemi.com Document No: MD-10001 Revision: A Issue date: 10/10/07