SC5205 150mA Ultra Low Dropout, Low Noise Micropower Linear Regulator POWER MANAGEMENT Description Features The SC5205 uses a Semtech proprietary internal PNP device for the pass element, providing a low dropout voltage of 165mV at a load of 150mA, while maintaining a ground pin current of 2750µA. The SC5205 is a 150mA ultra low dropout linear regulator with a built in CMOS/TTL logic level enable switch. It is designed specifically for battery powered applications where low quiescent current and low dropout are critical for battery longevity. The output noise is reduced by placing a 10nF capacitor on pin 4 (bypass). Ultra low dropout voltage - 165mV @ 150mA Guaranteed 150mA output current Low ground pin current at all loads <5µA quiescent current in shutdown Wide input supply voltage range 2.5V to 16V in Wide output voltage range Excellent line regulation Industrial temperature range Surface mount packaging (5 pin SOT-23) Lead-free packaging available, fully WEEE and RoHS compliant Applications The SC5205 is packaged in a 5 pin SOT-23 surface mount package for a very small footprint and it requires only a 1µF capacitor on the output and a 0.01µF on the bypass pin for a minimum amount of external components. Each device contains a bandgap reference, error amplifier, PNP pass element, thermal and current limiting circuitry and resistor divider network for setting output voltage. Battery Powered Systems Cellular Telephones Cordless Telephones Pagers Personal Digital Assistants Portable Instrumentation Cameras Portable Consumer Equipment PCMCIA cards Typical Application Circuit 1 VIN 2 3 EN + U1 SC5205 VIN VO 5 VO GND EN BYP C1 1uF 4 C2 10nF + C3 1uF Notes: (1) CIN (C1) is needed if the device is far from the supply’s filter capacitors, or for operation from a battery. A value of 1.0µF or greater should be used. CIN may be tantalum or aluminum electrolytic. (2) CO (C3) should be a 1µF or greater tantalum or aluminum electrolytic capacitor. Larger value capacitors will improve the overall transient response. (3) CBYP (C2 - required) should be placed as close as possible to pin 4 and ground. A 10nF ceramic capacitor is recommended. (4) EN may be tied to VIN if the shutdown feature is not required. Maximum EN voltage = VIN. Revision: March 8, 2006 1 www.semtech.com SC5205 POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. Exposure to Absolute Maximum rated conditions for extended periods of time may affect device reliability. Parameter Symbol Limits Units Input Supply Voltage VIN -0.3 to +20 V Power Dissipation PD Internally Limited W Thermal Resistance Junction to Ambient θJ A 256 °C/W Thermal Resistance Junction to Case θJ C 81 °C/W Operating Ambient Temperature Range TA -40 to +85 °C Operating Junction Temperature Range TJ -40 to +125 °C Storage Temperature Range TSTG -65 to +150 °C Lead Temperature (Soldering) 10 sec TLEAD 300 °C ESD Rating (Human Body Model) V ESD 2 kV Electrical Characteristics Unless specified: VIN = VO(NOM) + 1V, IO = 100µA, CBYP = 10nF, CO = 1µF, VENABLE ≥ 1.8V. Values in bold apply over the full operating temperature range. Parameter Symbol Test Conditions Min Supply Voltage Range VIN 2.5 Output Voltage VO -1% Typ VO -3% Output Voltage Temperature Coefficient Line Regulation TC REG(LINE) Max Units 16 V +1% V +3% 40 VIN = (VO(NOM) + 1V) to 16V 0.06 ppm/°C 0.12 %/V 0.15 Load Regulation REG(LOAD) IO = 0.1mA to 150mA 0.001 0.004 %/mA 0.007 Dropout Voltage(1) VD IO = 100µA 5 10 mV 25 IO = 50mA 100 150 mV 200 IO = 100mA 140 200 mV 250 IO = 150mA 165 250 mV 300 2006 Semtech Corp. 2 www.semtech.com SC5205 POWER MANAGEMENT Electrical Characteristics (Cont.) Unless specified: VIN = VO(NOM) + 1V, IO = 100µA, CBYP = 10nF, CO = 1µF, VENABLE ≥ 1.8V. Values in bold apply over the full operating temperature range. Parameter Ground Pin Current Symbol Test Conditions IGND IO = 100µA Min Typ Max Units 80 125 µA 150 IO = 50mA 600 1000 µA 1500 IO = 100mA 1600 2100 µA 2600 IO = 150mA 2750 3300 µA 4000 Current Limit(2) Ripple Rejection Ratio VEN < 0.4V (shutdown) 0.01 5 µA ILIM VO > (VO(NOM) - 5%) 300 500 mA PSRR IO = 100µA, f = 100Hz 50 dB 0.05 %/W 210 nV Thermal Regulation ∆VO PD RMS Output Noise en Enable Input Voltage V EN IO = 50mA, CBYP = 10nF, CO = 2.2µF, BW = 10Hz to 99kHz Low = O/P OFF High = O/P ON Enable Input Current IEN 0.4 Hz V 2.0 VEN ≤ 0.4V -0.01 -1 µA VEN ≥ 1.8V 5 10 µA 20 Notes: (1) Defined as the input to output differential at which the output voltage drops to 2% below the value measured at a differential of 1V. (2) As the load resistance further decreases, the SC5205 folds back the output current to approximately 150mA at VO = 0V. 2006 Semtech Corp. 3 www.semtech.com SC5205 POWER MANAGEMENT Pin Configuration Ordering Information Top View Device(1)(2) SC5205-X.XCSKTR SC5205-X.XCSKTRT(3) P ackag e 5 pin SOT-23 Notes: (1) Where -X.X denotes voltage options. Available voltages are: 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 3.6V, 3.8V, 4.0V and 5.0V. (2) Only available in tape and reel packaging. A reel contains 3000 devices. (3) Lead free packaging. This product is fully WEEE and RoHS compliant. SOT-23-5 Block Diagram Pin Descriptions Pin Pin Name 1 VIN 2 GND 3 EN Active high enable input. Connect to VIN if not being used. 4 BYP Reference bypass. Connect a 10nF capacitor (required) between this pin and GND to reduce output noise 5 VO Voltage output. 2006 Semtech Corp. Pin Function Supply voltage input. Ground. 4 www.semtech.com SC5205 POWER MANAGEMENT Outline Drawing - SOT-23-5 DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM MAX A e1 2X E/2 D A A1 A2 b c D E1 E e e1 L L1 N 01 aaa bbb ccc N EI 1 E 2 ccc C 2X N/2 TIPS e B D aaa C A2 .035 .000 .035 .010 .003 .110 .060 - .045 - .057 .006 .051 .020 .009 .118 .069 .114 .063 .110 BSC .037 BSC .075 BSC .012 .018 .024 (.024) 5 10° 0° .004 .008 .008 0.90 0.00 .90 0.25 0.08 2.80 1.50 - 1.15 - 1.45 0.15 1.30 0.50 0.22 3.00 1.75 2.90 1.60 2.80 BSC 0.95 BSC 1.90 BSC 0.30 0.45 0.60 (0.60) 5 0° 10° 0.10 0.20 0.20 A SEATING PLANE A1 C H bxN bbb C A-B D c GAGE PLANE 0.25 L 01 (L1) SEE DETAIL DETAIL A A SIDE VIEW NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Land Pattern - SOT-23-5 X DIM (C) G Z Y P C G P X Y Z DIMENSIONS MILLIMETERS INCHES (.098) .055 .037 .024 .043 .141 (2.50) 1.40 0.95 0.60 1.10 3.60 NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805) 498-2111 FAX (805)498-3804 Visit us at: www.semtech.com 2006 Semtech Corp. 5 www.semtech.com