NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 1.5A LOW DROPOUT VOLTAGE CMOS REGULATOR Description Pin Assignments The PAM3116 is a 1.5A CMOS LDO regulator that features a low quiescent current and low dropout voltages, as well as over temperature shutdown. The PAM3116 is stable with a ceramic output capacitor of 4.7F or higher. This family of regulators can provide either a stand-alone power supply solution or act as a post regulator for switch mode power supplies. They are particularly suitable for applications requiring low input and output voltages. PAM3116 is available in SOP-8 package. Features High Output Current Up to 1.5A Output Voltage Available in ADJ(0.8V) Stable with a Ceramic Output Capacitor Dropout Voltage: 300mV@1.5A, Vo = 3.3V Low Quiescent Current Over Temperature Shutdown Short Circuit Protection Low Temperature Coefficient Standard SOP-8 Packages Pb-Free Package Applications LCD TV/Monitors Set-top Box IPhone Charger Communication Devices Typical Applications Circuit VOUT = 0.8 x (1+R1/R2) PAM3116 Document number: DS36427 Rev. 2 - 3 1 of 10 www.diodes.com August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 Pin Description Pin Name Pin Number Function SOP-8 VIN EN ADJ VOUT 2 3 6 7 1, 5, 8 4 NC GND Supply Input Voltage. Chip Enable Set the output voltage by the feedback resistors. Output Voltage. No Internal Connection. Ground Functional Block Diagram Absolute Maximum Ratings (@TA = +25C, unless otherwise specified.) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Parameter Rating 6.5 Unit V Output Pin Voltage -0.3 to VIN +0.3 V EN, ADJ, OUTPUT SENSE Pin Voltage -0.3 to VIN +0.3 V PD/(VIN-VO) -65 to +150 150 300, (5sec) C C C Input Voltage Maximum Output Current Storage Temperature Maximum Junction Temperature Lead Soldering Temperature PAM3116 Document number: DS36427 Rev. 2 - 3 -- 2 of 10 www.diodes.com August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 Recommended Operating Conditions (@TA = +25C, unless otherwise specified.) Parameter Rating Unit 6 V Maximum Supply Voltage Ambient Temperature Range -40 to +85 Junction Temperature Range -40 to +125 C Thermal Information Parameter Symbol Package Max Thermal Resistance (Junction to Case) JC SOP-8 11 Thermal Resistance (Junction to Ambient) JA SOP-8 90 Internal Power Dissipation PD SOP-8 1100 Unit C/W mW Electrical Characteristics (@TA = +25C, VIN = VO +1V, CIN = 4.7F, CO = 4.7F, unless otherwise specified.) Max Units Input Voltage Range Parameter VIN 2.5 6.0 V Output Voltage Range VO 0.8 5 V ADJ Reference Voltage VREF IO = 1mA 0.812 V Output Voltage Accuracy VO IO = 1mA -1.5 Output Current IO VO > 0.8V 1500 Output Current Limit ILIM VO > 0.8V 1500 Short Circuit Current ISC IO = 0mA Dropout Voltage Quiescent Current Symbol Test Conditions VDROP IO = 1.5A IQ IO = 0mA Min 0.788 0.8 1.5 2500 mA 0.8V VO < 2.5V mA 1700 VO 2.5V LNR IO = 1mA, VIN = VO +1 to VO +2 -0.4 Load Regulation LDR IO = 1mA to 1500mA -1.0 % mA 700 Line Regulation Temperature Coefficient Typ mV 300 400 90 150 A 0.4 %/V +1.0 % 0.2 40 ppm/C Over Temperature Shutdown OTS IO = 1mA 150 C Over Temperature Hysteresis OTH IO = 1mA 40 C 70 65 50 dB 50 VRMS Power Supply Ripple Rejection TC PSRR IO = 100mA, VO = 1.2mA f = 100Hz f = 1kHz f = 10kHz Output Noise Vn f = 10Hz to 100kHz, IO = 10mA EN Input High Threshold VEH VIN = 2.5V to 5V EN Input Low Threshold VEL VIN = 2.5V to 5V 0.3 V EN Input High Bias Current IEH VEN = 5V, VIN = 5V 0.5 A EN Input Low Bias Current IEL VEN = 0V, VIN = 5V 0.5 A Shutdown Current ISD VEN = 0V 1 A PAM3116 Document number: DS36427 Rev. 2 - 3 3 of 10 www.diodes.com 1.5 V August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 Typical Performance Characteristics (@TA = +25C, CIN =2.2F, CO = 4.7F, unless otherwise specified.) PAM3116 Document number: DS36427 Rev. 2 - 3 4 of 10 www.diodes.com August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 Typical Performance Characteristics (cont.) (@TA = +25C, CIN =4.7F, CO = 4.7F, unless otherwise specified.) PAM3116 Document number: DS36427 Rev. 2 - 3 5 of 10 www.diodes.com August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 Typical Performance Characteristics (cont.) (@TA = +25C, CIN =4.7F, CO = 4.7F, unless otherwise specified.) PAM3116 Document number: DS36427 Rev. 2 - 3 6 of 10 www.diodes.com August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 Application Information The PAM3116 family of low-dropout (LDO) regulators have several features that allow them to apply to a wide range of applications. The family operates with very low input voltage and low dropout voltage (typically 300mV at full load), making it an efficient stand-alone power supply or post regulator for battery or switch mode power supplies. The 1.5A output current make the PAM3116 family suitable for powering many microprocessors and FPGA suppl ies. The PAM3116 family also has low output noise (typically 50VRMS with 4.7F output capacitor), making it ideal for use in telecom equipment. External Capacitor Requirements A 4.7F or larger ceramic input bypass capacitor, connected between VIN and GND and located close to the PAM3116, is required for stability. A 4.7F minimum value capacitor from VO to GND is also required. To improve transient response, noise rejection, and ripple rejection, an additional 1 0F or larger, low ESR capacitor is recommended at the output. A higher-value, low ESR output capacitor may be necessary if large, fast-risetime load transients are anticipated and the device is located several inches from the power source, especially if the minimum input voltage of 2.5V is used. Regulator Protection The PAM3116 features internal current limiting, thermal protection and short circuit protection. During normal operation, the PAM3116 limits output current to about 2.5A. When current limiting engages, the output voltage scales back linearly until the over current condition ends. While current limiting is designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the package. If the temperature of the device exceeds +150C, thermal-protection circuitry will shut down. Once the device has cooled down to approximately +40C below the high temp trip point, regulator operation resumes. The short circuit current of the PAM3116 is about 0.7A when its output pin is shorted to ground. Thermal Information The amount of heat that an LDO linear regulator generates is: PD VIN VOIO All integrated circuits have a maximum allowable junction temperature (TJ(MAX)) above which normal operation is not assured. A system designer must design the operating environment so that the operating junction temperature (TJ) does not exceed the maximum junction temperature (TJ(MAX)). The two main environmental variables that a designer can use to improve thermal performance are air flow and external heat sinks. The purpose of thi s information is to aid the designer in determining the proper operating environment for a linear regulator that is operating at a specific power level. In general, the maximum expected power (PD(MAX)) consumed by a linear regulator is computed as: Where: VI(AVG) is the average input voltage. VO(AVG) is the average output voltage. IO(AVG) is the average output current. I(Q) is the quiescent current. For most LDO regulators, the quiescent current is insignificant compared to the average output current; therefore, the term VI(AVG) xIQ can be neglected. The operating junction temperature is computed by adding the ambient temperature (TA) and the increase in temperature due to the regulator's power dissipation. The temperature rise is computed by multiplying the maximum expected power dissipation by the sum of the thermal resistances between the junction and the case RJC), the case to heatsink (RCS), and the heatsink to ambient (RSA). Thermal resistances are measures of how effectively an object dissipates heat. Typically, the larger the device, the more surface area available for power dissipation so that the object's thermal resistance will be lowers. PAM3116 Document number: DS36427 Rev. 2 - 3 7 of 10 www.diodes.com August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 Application Information (cont.) Setting the Output Voltage The internal reference is 0.8V (Typical). The output voltage is calculated as below: R1 VO 0.8x1 R2 The output voltage is given by Table 1. Table 1: Resistor selection for output voltage setting. VO R1 R2 1.2V 1.5V 1.8V 2.5V 3.3V 5.0V 56k 130k 150k 215k 374k 620k 110k 150k 120k 100k 120k 120k Ordering Information PAM3116 X X X xxx X Package Type Pin Configuration B Type: L: SOP-8 Number of Pins Output Voltage Shipping Package B: 8 ADJ: Adjustable (0.8V-5.0V) R: Tape & Reel 1. NC 2. VIN 3. EN 4. GND 5. NC 6. ADJ 7. VOUT 8. NC Part Number Output Voltage PAM3116BLBADJR Adjustable PAM3116 Document number: DS36427 Rev. 2 - 3 Marking P3116 XXXYW 8 of 10 www.diodes.com Package Type Standard Package SOP-8 2500 Units/Tape&Reel August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 Marking Information Package Outline Dimensions (All dimensions in mm.) PAM3116 Document number: DS36427 Rev. 2 - 3 9 of 10 www.diodes.com August 2017 (c) Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2132 OR AP7173 PAM3116 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. 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Copyright (c) 2017, Diodes Incorporated www.diodes.com PAM3116 Document number: DS36427 Rev. 2 - 3 10 of 10 www.diodes.com August 2017 (c) Diodes Incorporated Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Diodes Incorporated: PAM3116BLBADJR PAM3116ABLBADJR