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NCP3337 Dataheets PDF



Part Number NCP3337
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description Power Good Low Dropout Regulator
Datasheet NCP3337 DatasheetNCP3337 Datasheet (PDF)

NCP3337 Ultra High Accuracy, Low Iq, 500 mA with Power Good Low Dropout Regulator The NCP3337 is a high performance, low dropout regulator. With accuracy of ±0.9% over line and load and ultra−low quiescent current and noise it encompasses all of the necessary features required by today’s consumer electronics. This unique device is guaranteed to be stable without a minimum load current requirement and stable with any type of capacitor as small as 1.0 mF. The NCP3337 also comes equipped with sens.

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NCP3337 Ultra High Accuracy, Low Iq, 500 mA with Power Good Low Dropout Regulator The NCP3337 is a high performance, low dropout regulator. With accuracy of ±0.9% over line and load and ultra−low quiescent current and noise it encompasses all of the necessary features required by today’s consumer electronics. This unique device is guaranteed to be stable without a minimum load current requirement and stable with any type of capacitor as small as 1.0 mF. The NCP3337 also comes equipped with sense and noise reduction pins to increase the overall utility of the device. The NCP3337 offers reverse bias protection. Features • High Accuracy Over Line and Load (±0.9% at 25°C) • Ultra−Low Dropout Voltage at Full Load (260 mV typ) • No Minimum Output Current Required for Stability • Low Noise (33 mVrms w/10 nF Cnr and 52 mVrms w/out Cnr) • Low Shutdown Current (< 1 mA) • Reverse Bias Protected • 2.9 V to 12 V Supply Range • Thermal Shutdown Protection • Current Limitation • Requires Only 1.0 mF Output Capacitance for Stability • Stable with Any Type of Capacitor (including MLCC) • Available in 1.8 V, 2.5 V, 3.3 V, 5.0 V and Adjustable Output Voltages • Power Good Output • These are Pb−Free Devices Applications • PCMCIA Card • Cellular Phones • Camcorders and Cameras • Networking Systems, DSL/Cable Modems • Cable Set−Top Box • MP3/CD Players • DSP Supply • Displays and Monitors http://onsemi.com DFN10 MN SUFFIX CASE 485C MARKING DIAGRAM 1 P3337 xxx ALYWG G Pin 1, 2. Vout 3. Sense / ADJ 4. GND 5. PWRG 6. NC 7. NR 8. SD 9, 10. Vin EP, GND xxx = Specific Device Marking A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Package (Note: Microdot may be in either location) ORDERING INFORMATION See detailed ordering, marking and shipping information in the package dimensions section on page 15 of this data sheet. © Semiconductor Components Industries, LLC, 2011 September, 2011 − Rev. 1 1 Publication Order Number: NCP3337/D NCP3337 ON OFF Vin Cin 1.0 mF + Cnr 6 7 (Optional) 8 NC SD 9 IN 10 IN NR SENSE OUT OUT R1 PWRG EP GND 100k 5 EP 4 3 2 1 Cout 1.0 mF + Vout PWRG Figure 1. Typical Fixed Version Application Schematic ON OFF Vin + Cin 1.0 mF 6 8 NC SD 9 IN 10 IN Cnr 7 (Optional) NR 3 ADJ OUT 2 1 OUT R1 PWRG EP GND 100k 5 EP 4 Cout 1.0 mF R2 R3 + Vout PWRG Figure 2. Typical Adjustable Version Application Schematic http://onsemi.com 2 NCP3337 Vin SD NR GND Enable Block Voltage Reference NCP3337 Adjustable Comp. Current and Thermal Protection Circuit Error Amplifier Series Pass Element with Reverse Bias Protection Figure 3. Block Diagram, Adjustable Output Version Vin SD NR GND Comp. Enable Block Voltage Reference NCP3337 Fix Current and Thermal Protection Circuit Error Amplifier Series Pass Element with Reverse Bias Protection Figure 4. Block Diagram, Fixed Output Version PWRG Vout ADJ PWRG Vout SENSE http://onsemi.com 3 NCP3337 PIN FUNCTION DESCRIPTION Pin No. Pin Name Description 1, 2 Vout Regulated output voltage. Bypass to ground with Cout w 1.0 mF 3 SENSE/ADJ For output voltage sensing, connect to Pins 1 and 2.at Fixed output Voltage version Adjustable pin at Adjustable output version 4 GND Power Supply Ground 5 PWRG Power Good 6 NC Not Connected 7 NR Noise Reduction Pin. This is an optional pin used to further reduce noise. 8 SD Shutdown pin. When not in use, this pin should be connected to the input pin. 9, 10 EPAD Vin EPAD Power Supply Input Voltage Exposed thermal pad should be connected to ground. MAXIMUM RATINGS Rating Symbol Value Unit Input Voltage Vin −0.3 to +16 V Output Voltage Vout −0.3 to Vin +0.3 or 10 V* V PWRG Pin Voltage VPWRG −0.3 to +16 V Shutdown Pin Voltage Vsh −0.3 to +16 V Junction Temperature Range TJ −40 to +150 °C Storage Temperature Range Tstg −50 to +150 °C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. NOTE: This device series contains ESD protection and exceeds the following tests: Human Body Model (HBM) JESD 22−A114−B Machine Model (MM) JESD 22−A115−A *Which ever is less. Reverse bias protection feature valid only if (Vout − Vin) ≤ 7 V. THERMAL CHARACTERISTICS Test Conditions (Typical Value) Characteristic Min Pad Board (Note 1) 1, Pad Board (Note 1) Unit Junction−to−Air, qJA 215 66 °C/W Junction−to−Pin, J−L4 58 18 °C/W 1. As mounted on a 35 x 35 x 1.5 mm FR4 Substrate, with a single layer of a specified copper area of 2 oz (0.07 mm thick) copper traces and heat spreading area. JEDEC 51 specifications for a low and high conductivity test board recommend a 2 oz copper thickness. Test conditions are under natural convection or zero air flow. .


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