CMPWR161 Micropower, Low Noise 4.75V/150mA LDO Regulator Features Product Description • The CMPWR161 is a micropower, low noise regulator designed specifically to filter out noise from a 5V digital supply making it ideal for noise-sensitive analog applications. The CMPWR161 delivers up to 150mA at a fixed 4.75V output. A bandgap reference bypass pin (BYP) provides low noise operation when an external capacitor is connected between this pin and ground. In addition, the CMPWR161 features an enable pin (EN) which allows the regulator to be placed into shutdown mode supporting low power and battery applications. The CMOS regulator features low quiescent current even at full load. • • • • • • • • • • Excellent power supply ripple rejection for VIN-VOUT down to 110mV Excellent power supply ripple rejection in audible band (20Hz to 20KHz) Very low dropout voltage (110mV at 150mA) Fast transient response minimizes glitches in audible band. Low noise in audible band Guaranteed to deliver 150mA output at 4.75V output Low quiescent current—300µA typical "Zero" current shutdown mode 5205 compatible pin-out 5-lead SOT-23 package Lead-free version available The CMPWR161 is housed in a 5-pin SOT-23 package, which is ideal for space critical applications. It is available with optional lead-free finishing. Applications • • • • • • 5V analog supply for audio CODEC Low noise power supply ideal for audio use Notebook computers Sound cards Motherboards Set top boxes Simplified Electrical Schematic Typical Application Circuit VIN CMPWR161 5V Supply Voltage VIN VOUT VOUT + CIN 1µF GND 100nF BYP GND EN 4.75V@ 150mA EN + VOUT C + OUT + BYP 10kHz VREF 4.75V 10µF - 10nF GND © 2004 California Micro Devices Corp. All rights reserved. 01/14/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 1 CMPWR161 PACKAGE / PINOUT DIAGRAM Top View 1 GND 2 EN 3 5 VOUT 4 BYP 161Y/R VIN 5-pin SOT23 Note: This drawing is not to scale. PIN DESCRIPTIONS PIN NAME 1 VIN DESCRIPTION 2 GND 3 EN Enable/shutdown input. When EN is asserted high (VEN ≥ 2V), the regulator is enabled. When EN is asserted low, the regulator is shutdown (VOUT=0V). This input is compatible with CMOS logic. 4 BYP Reference bypass pin. This input is used to connect an external capacitor (CBYP) for noise reduction and to maximize power supply ripple rejection. A 10nF capacitor is recommended for this function. 5 VOUT The regulated voltage output. An output capacitor of 10µF is recommended to provide the necessary phase compensation for the regulator and also minimize any transient disturbances. Positive input voltage for the regulator. The internal loading on this input is typically 300µA whenever the regulator is enabled and less than 1µA when the regulator is disabled. If this input is greater than 2 inches from the main input filter, a 1µF ceramic capacitor is recommended for additional filtering. The negative reference for all voltages. Ordering Information PART NUMBERING INFORMATION Standard Finish Pins Package Ordering Part Number1 5 SOT23-5 CMPWR161Y Lead-free Finish Part Marking Ordering Part Number1 Part Marking 161Y CMPWR161R 161R Note 1: Parts are shipped in Tape & Reel form unless otherwise specified. © 2004 California Micro Devices Corp. All rights reserved. 2 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 01/14/04 CMPWR161 Specifications ABSOLUTE MAXIMUM RATINGS PARAMETER RATING UNITS +2000 V [GND - 0.5] to [+6.5] [GND - 0.5] to [+6.5] [GND - 0.5] to [VCC+0.5] V V V -40 to +150 °C 0 to +70 0 to +125 °C °C ESD Protection (HBM) Pin Voltages VIN VOUT VEN Storage Temperature Range Operating Temperature Range Ambient Junction STANDARD OPERATING CONDITIONS PARAMETER RATING UNITS VIN 4.9 to 5.5 V Ambient Operating Temperature Range 0 to +70 °C Load Current 0 to 150 mA COUT 10 +10% µF ELECTRICAL OPERATING CHARACTERISTICS(SEE NOTE 1) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Regulator Output Voltage 0mA < ILOAD < 150mA 4.65 4.75 4.85 V VR LOAD Load Regulation 5mA < ILOAD < 150mA, VIN=5.0V 0 mV VR LINE Line Regulation xx ILOAD = 5mA, 4.9V < VCC< to 5.5V 1 mV Regulator Dropout Voltage Minimum VIN −VOUT for ILOAD= 150mA 110 250 mV VIN Current Shutdown (Regulator Disabled), VOUT tied to GND 0.01 10 µA Ground Current Regulator Enabled, ILOAD= 0mA 300 500 µA Regulator Enabled, ILOAD= 150mA 300 500 µA VOUT VDO IIN IGND RREJ Ripple Rejection VIH EN Input Logic High Threshold VIL EN Input Logic Low Threshold VIN −VOUT = 150mV, ILOAD= 150mA, CBYP = 10nF ƒ =100Hz ƒ =10kHz xx xx 42 25 dB dB 2.0 V 0.5 V Note 1: Operating Characteristics are over Standard Operating Conditions unless otherwise specified. © 2004 California Micro Devices Corp. All rights reserved. 01/14/044 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 3 CMPWR161 Performance Information CMPWR161 Typical DC Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN=10µF & 0.1µF, COUT=10µF & 0.1µF, CBYP=0.01µF, VIN=5.0V, ILOAD=5mA. Load Regulation 125 4.80 100 4.78 Output Voltage [V] Dropout [mV] Dropout Voltage vs. Load (VOUT=4.70V) 75 50 25 0 4.76 4.74 4.72 4.70 0 50 100 Load Current [mA] 150 0 4.78 4.77 4.77 4.76 4.75 4.74 250 300 4.76 4.75 4.74 4.73 4.73 4.72 4.75 4.80 4.85 4.90 4.95 5.00 5.05 5.10 Supply Voltage [V] 4.72 4.75 4.80 4.85 4.90 4.95 5.00 5.05 5.10 Supply Voltage [V] Supply Current vs. Voltage (EN = VIN) Ground Current vs. Output Load 500 Ground Current [uA] 500 Supply Current [uA] 100 150 200 Load Current [mA] Line Regulation (150mA Load) 4.78 Output Voltage [V] Output Voltage [V] Line Regulation (5mA Load) 50 400 300 200 100 0 4.75 400 300 200 100 0 5.00 5.25 Supply Voltage [V] 5.50 0 50 100 Load Current [mA] 150 © 2004 California Micro Devices Corp. All rights reserved. 4 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 01/14/04 CMPWR161 Performance Information (cont’d) CMPWR161 Transient Characteristics (nominal conditions unless specified otherwise) 1mA-150mA Load Step (VIN -VOUT=250mV) 4.8V – 5.2V Line Step (5mA Load) Enable Response (no BYP cap) Enable Response (CBYP = 10nF) Disable Response (no BYP cap) Disable Response (CBYP = 10nF) EN © 2004 California Micro Devices Corp. All rights reserved. 01/14/044 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 5 CMPWR161 Performance Information (cont’d) CMPWR161 Supply Rejection (nominal conditions with 10mV peak-to-peak sine wave on VIN and ILOAD=150mA) Ripple Rejection vs. Frequency (VIN-VOUT=250mV)1 70 70 5mA Load 60 50 Ripple Rejection (dB) Ripple Rejection (dB) Ripple Rejection vs. Frequency (VIN-VOUT=125mV)1 150mA Load 40 30 20 10 0 100 1000 5mA Load 60 50 40 30 150mA Load 20 10 0 100 10000 1000 100Hz Ripple Rejection vs. Dropout (150mA) 10kHz Ripple Rejection vs. Dropout (150mA) 70 70 60 60 Ripple Rejection (dB) Ripple Rejection (dB) 10000 Frequency Frequency 50 40 30 20 10 0 50 40 30 20 10 0 0 50 100 150 200 V IN - V OUT [mV] 250 300 0 100 200 300 VIN - VOUT [mV] Note:1 VIN – VOUT is measured from the DC operating point on the output to the DC operating point on the input. © 2004 California Micro Devices Corp. All rights reserved. 6 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 01/14/04 CMPWR161 Performance Information (cont’d) CMPWR161 Typical Thermal Characteristics (nominal conditions unless specified otherwise) VOUT vs. Temperature (150mA Load) 4.800 4.800 4.775 4.775 VOUT [V] VOUT [V] VOUT vs. Temperature (5mA Load) 4.750 4.725 4.750 4.725 4.700 4.700 25 50 75 100 o Temperature [ C] 125 25 50 75 100 Temperature [o C] 125 Dropout Voltage vs. Load 150 Dropout [mV] 125 70oC 100 75 125oC 50 25oC 25 0 0 50 100 Load Current [mA] 150 © 2004 California Micro Devices Corp. All rights reserved. 01/14/044 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 7 CMPWR161 Mechanical Details SOT23-5 Mechanical Specifications Mechanical Package Diagrams Dimensions for CMPWR161 device packaged in 5-pin SOT23 package are presented below. TOP VIEW For complete information on the SOT23-5 package, see the California Micro Devices SOT23 Package Information document. e1 e 5 4 E1 E 1 2 3 PACKAGE DIMENSIONS Package SOT23-5 (JEDEC name is MO-178) Pins 5 Dimensions Millimeters Min Max Min Max -- 1.45 -- 0.0571 A1 0.00 0.15 0.0000 0.0059 b 0.30 0.50 0.0118 0.0197 c 0.08 0.22 0.0031 0.0087 D 2.75 3.05 0.1083 0.1201 E 2.60 3.00 0.1024 0.1181 E1 1.45 1.75 0.0571 0.0689 e 0.95 BSC 0.0374 BSC e1 1.90 BSC 0.0748 BSC L1 # per tape and reel 0.30 0.60 0.60 REF SIDE VIEW Inches A L b 0.0118 D A A1 END VIEW c 0.0236 L1 L 0.0236 REF 3000 pieces Package Dimensions for SOT23-5. © 2004 California Micro Devices Corp. All rights reserved. 8 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ▲ Tel: 408.263.3214 ▲ Fax: 408.263.7846 ▲ www.calmicro.com 01/14/04