Preliminary CM3019 CALIFORNIA MICRO DEVICES Micropower, 500mA Low Noise CMOS LDO Regulator Features Product Description • 500mA output current capability • 500mA peak in SOT-23 package • 500mA continuous in MSOP package • 500mV maximum dropout voltage at full load • Excellent line and load regulation • Stable with any output capacitor • Ultra low noise with optional bypass capacitor • Fast power-up with bypass capacitor • “Zero” current in Shutdown mode • Thermal Overload Protection • Foldback Current Limiting Protection • Reverse current protection The CM3019 is a CMOS linear voltage regulator with low quiescent current, very low drop out voltage and better than 1% initial output voltage accuracy. The quiescent current is typically 150µA at light loads and only 165µA at 500mA. This is 5% more efficient than equivalent Bi-CMOS devices that can waste up to 25mA at 500mA. Load regulation is maintained for peak currents up to 500mA. This is useful for supplying inrush currents during power-up and transient conditions. Continuous output current is limited by package type and board layout. Applications • • • • Notebook, and palmtop computers Cell phones and battery powered devices Consumer and personal electronics PC Card Vcc and Vpp regulation and switching Table 1: CM3019 Regulator Family Product Output Voltage CM3019-00 Adjustable CM3019-12 1.2V CM3019-15 1.5V CM3019-18 1.8V CM3019-25 2.5V CM3019-28 2.8V CM3019-30 3.0V CM3019-33 3.3V For other output voltages, please contact the factory A dedicated control input (EN, Active High) has been included for power-up sequencing flexibility. When this input is taken low, the regulator is disabled. In this state, the supply current will drop to near zero. The device also features reverse current protection. This protects the device by blocking the pass transistors parasitic diode when the output voltage is forced higher than the input. For low noise performance and increased power supply ripple rejection a noise bypass capacitor can be connected to the BYP pin. Connecting this capacitor will not significantly delay the speed of power-up. The CM3019 is fully protected, offering both overload current limiting and high temperature thermal shutdown. To reduce board cost and layout size the CM3019 was designed to be stable with or without any output capacitor. This includes tiny, low ESR ceramic capacitors. Housed in a low profile MSOP8 package, or a SOT235/SOT23-6, the device is ideal for space critical applications. Typical Application Circuit Block Diagram © 2004 California Micro Devices Corp. All rights reserved 02/20/04 430 N. McCarthy Blvd, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 1 Preliminary CM3019 CALIFORNIA MICRO DEVICES PACKAGE / PINOUT DIAGRAM PIN DESCRIPTIONS SOT-23-5 Pin 1 MSOP 8 Pin 1 Symbol 2 3 5-8 1 GND EN 4 4 BYP 5 3 OUT IN Description IN is the input power source for the regulator. If this input is within a few inches of the main supply filter, a capacitor may not be necessary. Otherwise an input filter capacitor of about 1-10uF will ensure adequate filtering. Ground is the negative reference for all voltages When this input is taken low (< 0.4V), the regulator is disabled. In this state, the supply current will drop to near zero. Reference Bypass Pin. Connect to an external capacitor for noise reduction. A 10nF100nF size ceramic capacitor is recommended. Out is the regulator output voltage used to power the load. No output capacitor is required for stability. Output capacitance can be added to improve transient response, noise performance and power supply ripple rejection for frequencies over ~100kHz. Note1: Tantalum, electrolytic or low cost ceramic capacitors may be used. STANDARD PART ORDERING INFORMATION Package Pins 6 5 5 5 5 5 5 5 8 8 8 8 8 8 8 8 Ordering Information Style Tape & Reel SOT-23 CM3019-00ST Part Marking CB00 SOT-23 CM3019-12ST CB12 SOT-23 CM3019-15ST CB15 SOT-23 CM3019-18ST CB18 SOT-23 CM3019-25ST CB25 SOT-23 CM3019-28ST CB28 SOT-23 CM3019-30ST CB30 SOT-23 CM3019-33ST CB33 MSOP CM3019-00MA CM30/1900 MSOP CM3019-12MA CM30/1912 MSOP CM3019-15MA CM30/1915 MSOP CM3019-18MA CM30/1918 MSOP CM3019-25MA CM30/1925 MSOP CM3019-28MA CM30/1928 MSOP CM3019-30MA CM30/1930 MSOP CM3019-33MA CM30/1933 © 2004 California Micro Devices Corp. All rights reserved 02/20/04 430 N. McCarthy Blvd, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 2 Preliminary CM3019 CALIFORNIA MICRO DEVICES Specifications Parameter Absolute Maximum Ratings Rating VIN Voltage EN, VOUT Voltages Temperature: Storage Operating Ambient Operating Junction Power Dissipation Unit + 6.0, Gnd - 0.6 VCC + 0.6, Gnd - 0.6 - 40 to +150 -40 to +85 0 to +150 Internally limited V V °C Parameter Operating Conditions Range VIN Temperature (Ambient) Load Current note2 COUT 2.2 to 6.0 -40 to +85 0 to 500 0-50 Uni t V °C mA µF W Electrical Operating Characteristics o VOUT+1V< VIN & 2.5V< VIN < 6V, IOUT=1mA, CIN=2.2uF, TJ=25 C, COUT=2.2µ F, VSD=1.5V, unless specified otherwise. o o bold values indicate -40 C<TJ<125 C Symbol VOUT Parameter Output Voltage Accuracy VR LINE Line Regulation Note4 VR LOAD Load Regulation RDROP Dropout Resistance IGND Ground Current Conditions o TA = 25 C o o 0 C<TJ<125 C o o -40 C<TJ<125 C VOUT+1V< VIN & 2.5V< VIN < 6V IOUT=1mA to 500mA Note3 VIN=VOUT+1V IOUT=1mA to 500mA VIN=VOUT(nominal)-100mV EN tied to VCC, ILOAD = 1mA 150 MAX 1 2 3 0.2 0.4 0.25 0.5 1 1.2 200 EN tied to VCC, ILOAD = 500mA 165 200 µA EN tied to GND, (Disable Mode) 0.01 1 µA VEN Enable Voltage Regulator enabled VDIS Disable Voltage Regulator shutdown IEN Enable Input Current PSRR Power Supply Ripple Rejection eN ton TYP 0.1 0.1 0.7 1.5 UNIT % % % %/V % Ω µA V 0.4 0.18 V 0.01 µA f=1kHz 75 dB Output Noise Voltage CBYP=0.1uF, BW=10Hz to 100kHz 30 VOUT Turn-On-Time CBYP=0uF 80 µVrm s µs CBYP=0.1uF 100 µs 800 mA 550 mA 165 °C 20 °C ILIM Overload Current Limit ISC Short Circuit Current TJSD Thermal Shutdown Junction Temperature Thermal Hysteresis THYST MIN -1 -2 -3 VOUT < 0.5V Note 2: Tantalum, electrolytic or low cost ceramic capacitors may be used. Note 3: Regulation voltages and dropout resistance is measured at constant junction temperature using low duty cycle pulse testing. Note 4: Line regulation is displayed as the average regulation across the full operating range measured in %/V. Package SOT23-5/SOT23-6 MSOP8 Fused Thermal Performance θJA Minimum Footprint θJA 1” square 2oz copper O O 220 C/W 170 C/W O O 160 C/W 70 C/W © 2004 California Micro Devices Corp. All rights reserved 02/20/04 430 N. McCarthy Blvd, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 3 Preliminary CM3019 CALIFORNIA MICRO DEVICES Typical DC Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1µF, COUT = 2.2µF, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT) Load Regulation Dropout Voltage (VOUT=2.9V) Foldback Current Limiting 4.0 800 3.10 OUTPUT VOLTAGE [V] 600 DROPOUT [V] 3.00 2.95 500 400 300 200 100 0 2.90 0 100 200 300 400 500 600 200 LOAD CURRENT [m A] Line Regulation 1mA Load 3.00 2.95 2.90 500mA Load 0 100 200 300 400 500 600 700 800 900 LOAD CURRENT [mA] Enable Voltage Threshold 1000 3.5 3.0 1mA Load 2.5 2.0 1.5 1.0 3.6 4.0 4.4 4.8 5.2 INPUT VOLTAGE [V ] 5.6 0 1 2 3 4 5 GROUND CURRENT [uA] 175 150 125 100 3 4 2 5 6 3 4 5 6 SUPPLY VOLTAGE [V] 7 Output Supply Current vs. Voltage 2500 200 2 600 6 Ground Current vs. Output Load 1mA Load 1 700 INPUT VOLTAGE [V] En = Vin 0 800 500 6.0 Supply Current vs. Voltage (EN = V IN) 200 180 160 140 120 100 80 60 40 20 0 900 0.5 0.0 2.80 3.2 1.0 600 THRESHOLD [mV] OOUTPUT VOLTAGE [V] OUTPUT VOLTAGE [V] 3.05 2.8 2.0 Line Regulation 3.10 GROUND CURRENT [uA] 400 LOAD [mA] 4.0 2.85 3.0 0.0 0 700 0 INPUT VOLTAGE [V] 100 200 300 400 500 600 700 800 OUTPUT SUPPLY CURRENT [nA] OUTPUT VOLTAGE [V] 700 3.05 2000 1500 1000 Vin = 0V, EN = 0V 500 0 LOAD CURRENT [mA] 0 1 2 3 4 5 6 OUTPUT SUPPLY VOLTAGE [V] © 2004 California Micro Devices Corp. All rights reserved 02/20/04 430 N. McCarthy Blvd, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 4 Preliminary CM3019 CALIFORNIA MICRO DEVICES Input Supply Current vs. Voltage Input Supply Current vs. Voltage Output Supply Current vs. Voltage 10000 2500 2000 1500 1000 Vout = 0V, EN = 0V 500 0 0 1 2 3 4 5 6 Clamp to GND OUTPUT SUPPLY CURRENT [uA] INPUT SUPPLY CURRENT [nA] INPUT SUPPLY CURRENT [nA] 2500 Vout = 3V, EN = 0V 2000 1500 1000 500 0 0 INPUT SUPPLY VOLTAGE [V] 1 2 3 4 5 1000 100 Vin = 3V, EN = 0V 10 1 Protect 0 0 6 INPUT SUPPLY VOLTAGE [V] 1 2 3 4 5 6 OUTPUT SUPPLY VOLTAGE [V] Transient Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1µF, COUT = 2.2µF, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V VOUT) 10% to 90% Load Step (tr=1µ s) 3.5V – 4.5V Line Step (tr=1µ s) 10% to 90% Load Step (tr=1µ s) 10% to 90% Load Step (tr=1µ s) 3.5V – 4.5V Line Step (tr=1µ s) 3.5V – 4.5V Line Step (tr=1µ s) Enable Response Disable Response Enable Response © 2004 California Micro Devices Corp. All rights reserved 02/20/04 430 N. McCarthy Blvd, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 5 Preliminary CM3019 CALIFORNIA MICRO DEVICES Power-up Power-up Power-down Power Supply Ripple Rejection and Noise (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1µF, VIN = 4.0V, PSRR measured with 50mV pk-pk sin wave on VIN. (all plots measured with 3.0V VOUT) Pow er Supply Ripple Reje ction [dB] Power Supply Ripple Rejection [dB] 90 90 100uA Load 80 5mA Load 80 5mA Load 100uA Load 70 70 100mA Load 100mA Load 60 PSRR [dB] PSRR[dB] 60 50 500mA Load 40 30 50 500mA Load 40 30 20 20 10 Cout=10uF, Cbyp=100nF 10 0 10 100 1000 10000 100000 Cout=2.2uF, Cbyp=100nF 0 10 100 1000 10000 100000 Fre que ncy [Hz] Frequency [Hz] © 2004 California Micro Devices Corp. All rights reserved 02/20/04 430 N. McCarthy Blvd, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 6 Preliminary CM3019 CALIFORNIA MICRO DEVICES Ouput noise spectral density (100uA Load) Power Supply Ripple Rejection [dB] 1.E-06 90 80 5mA Load 100uA Load 70 100mA Load En[uV/rootHz] PSRR [dB] 60 50 500mA Load 40 30 1.E-07 20 10 Cout = 10uF, Cbyp = 100nF NO OUTPUT CAP, Cbyp=100nF 0 10 100 1000 10000 100000 1.E-08 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 Frequency [Hz] Frequency [Hz] © 2004 California Micro Devices Corp. All rights reserved 02/20/04 430 N. McCarthy Blvd, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 7 Preliminary CM3019 CALIFORNIA MICRO DEVICES Typical Thermal Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN = 1uF, COUT = 2.2uF, No CBYP, VIN = 4.0V, Load = 5mA (all plots measured with 3.0V Vout) VOUT vs. Temperature 50 50 40 40 30 30 OUTPUT CHANGE [mV] OUTPUT CHANGE [mV] VOUT vs. Temperature 20 10 0 -10 -20 -30 -40 20 10 0 -10 -20 -30 -40 -50 -50 0 25 50 75 100 125 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE [oC] o TEMPERATURE [ C] IGND vs. Temperature GROUND CURRENT [uA] 300 250 200 150 100 50 0 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE [oC] © 2004 California Micro Devices Corp. All rights reserved 02/20/04 430 N. McCarthy Blvd, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 8