LM2853MH-1.5/NOPB

Product Folder Order Now Support & Community Tools & Software Technical Documents LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 LM2853 3-A 550-kHz Synchronous Buck Regulator 1 Features 3 Description • • The LM2853 synchronous buck regulator is a 550 kHz step-down switching voltage regulator capable of driving up to a 3A load with excellent line and load regulation. The LM2853 accepts an input voltage between 3 V and 5.5 V and delivers a customizable output voltage that is factory programmable from 0.8 V to 3.3 V in 100 mV increments. Internal type-three compensation enables a low component count solution and greatly simplifies external component selection. The HTSSOP-14 (PWP) package enhances the thermal performance of the LM2853. 1 • • • • • • • • Input Voltage Range of 3 V to 5.5 V Factory EEPROM Set Output Voltages From 0.8 V to 3.3 V in 100 mV Increments Maximum Load Current of 3A Voltage Mode Control Internal Type-Three Compensation Switching Frequency of 550 kHz Low Standby Current of 12 µA Internal 40 mΩ MOSFET Switches Standard Voltage Options – 0.8/1.0/1.2/1.5/1.8/2.5/3.0/3.3 Volts Exposed Pad 14-Lead HTSSOP (PWP) Package 2 Applications • • • Low Voltage Point of Load Regulation Local Solution for FPGA/DSP/ASIC Core Power Broadband Networking and Communications Infrastructure Typical Application Circuit Device Information(1) PART NUMBER LM2853 PACKAGE HTSSOP (14) BODY SIZE (NOM) 5.00 mm × 4.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Efficiency vs ILOAD 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 www.ti.com Table of Contents 1 2 3 4 5 6 7 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 4 6.1 6.2 6.3 6.4 6.5 6.6 4 4 4 4 5 6 Absolute Maximum Ratings ...................................... ESD Ratings ............................................................ Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Typical Characteristics .............................................. Detailed Description .............................................. 8 7.1 Overview ................................................................... 8 7.2 Functional Block Diagram ......................................... 8 8 Application and Implementation .......................... 9 8.1 Application Information.............................................. 9 8.2 Typical Application .................................................. 13 9 Layout ................................................................... 14 9.1 Layout Guidelines ................................................... 14 9.2 Example Circuit Schematic and Bill of Materials .... 14 10 Device and Documentation Support ................. 16 10.1 10.2 10.3 10.4 10.5 Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 16 16 16 16 16 11 Mechanical, Packaging, and Orderable Information ........................................................... 16 4 Revision History Changes from Original (October 2006) to Revision A Page • Added Application and Implementation section, Device Information table, Pin Configuration and Functions section, ESD Ratings table, Thermal Information table, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. ..................................................................................................................... 1 • Changed layout of Data Sheet to TI format ........................................................................................................................... 1 2 Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 LM2853 www.ti.com SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 5 Pin Configuration and Functions PWP 14-HTSSOP Top View Pin Functions NO. NAME 1 AVIN DESCRIPTION Input Voltage for Control Circuitry 2 EN 3 SGND 4 SS Soft-Start Pin No Connect. This pin must be tied to ground. 5 NC 6,7 PVIN 8,9 SW 10,11 PGND 12,13 NC 14 SNS Exposed Pad EP Enable Low noise ground Input Voltage for Power Circuitry Switch Pin Power Ground No-Connect. These pins must be tied to ground. Output Voltage Sense Pin The exposed pad is internally connected to GND, but it cannot be used as the primary GND connection. The exposed pad should be soldered to an external GND plane. Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 3 LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 www.ti.com 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) AVIN, PVIN, EN, SNS, SW, SS MIN MAX UNIT –0.3 6 V Power Dissipation 14-Pin Exposed Pad HTSSOP Package (PWP) Internally Limited V Infrared (15 sec) 220 °C Vapor Phase (60 sec) 215 °C Soldering (10 sec) 260 °C 150 °C 150 °C Maximum junction temperature Storage temperature, Tstg (1) –65 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 6.2 ESD Ratings V(ESD) (1) Electrostatic discharge VALUE UNIT ±2 kV Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) (1) PVIN to GND AVIN to GND Operation junction temperature, TJ (1) MIN MAX 1.5 5.5 UNIT V 3 5.5 V –40 125 °C Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Range indicates conditions for which the device is intended to be functional, but does not ensure specific performance limits. For ensured specifications and test conditions, see the Electrical Characteristics. 6.4 Thermal Information LM2853 THERMAL METRIC (1) PWP (HTSSOP) UNIT 14 PINS RθJA (1) 4 Junction-to-ambient thermal resistance 38 °C/W For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 LM2853 www.ti.com SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 6.5 Electrical Characteristics Specifications with standard typeface are for TJ = 25°C. Minimum and Maximum limits are ensured through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C and are provided for reference purposes only. Unless otherwise specified AVIN = PVIN = 5 V. PARAMETER TEST CONDITIONS MIN TYP MAX 0.8 0.818 1.0225 UNIT SYSTEM PARAMETERS VOUT ΔVOUT/ΔA VIN ΔVOUT/ΔIO Voltage tolerance Line regulation (1) (1) Load regulation VOUT = 0.8 V option TJ = –40°C to 125°C 0.782 VOUT = 1 V option TJ = –40°C to 125°C 0.9775 1 VOUT = 1.2 V option TJ = –40°C to 125°C 1.1730 1.2 1.227 VOUT = 1.5 V option TJ = –40°C to 125°C 1.4663 1.5 1.5337 VOUT = 1.8 V option TJ = –40°C to 125°C 1.7595 1.8 1.8405 VOUT = 2.5 V option TJ = –40°C to 125°C 2.4437 2.5 2.5563 VOUT = 3 V option TJ = –40°C to 125°C 2.9325 3 3.0675 VOUT = 3.3 V option TJ = –40°C to 125°C 3.2257 3.3 3.3743 VOUT = 0.8 V, 1 V, 1.2 V, 1.5 V, 1.8 V or 2.5 V 3 V ≤ AVIN ≤ 5.5 V TJ = –40°C to 125°C 0.2 1.1 % VOUT = 3 V or 3.3 V 3.5 V ≤ AVIN ≤ 5.5 V TJ = –40°C to 125°C 0.2 1.1 % Rising TJ = –40°C to 125°C 2.47 3 Normal operation 2 V mV/A V VON UVLO Threshold (AVIN) Falling hysteresis TJ = –40°C to 125°C 155 260 mV RDS(ON)-P PFET On resistance Isw = 3A TJ = –40°C to 125°C 40 120 mΩ RDS(ON)-N NFET On resistance Isw = 3A TJ = –40°C to 125°C 32 100 mΩ RSS Soft-Start resistance ICL Peak current limit threshold IQ Operating current Non-switching TJ = –40°C to 125°C 0.85 2 mA ISD Shutdown quiescent current EN = 0 V TJ = –40°C to 125°C 12 50 µA RSNS Sense pin resistance 50 3.6 450 kΩ 5 A 432 kΩ PWM fosc Switching frequency Drange Duty cycle range ENABLE CONTROL . TJ = –40°C to 125°C 325 TJ = –40°C to 125°C 0 75 550 725 kHz 100 % (2) VIH EN Pin minimum high input TJ = –40°C to 125°C VIL EN Pin maximum low input TJ = –40°C to 125°C IEN EN Pin pullup current EN = 0 V % of AVIN 25 % of AVIN 1.5 µA THERMAL CONTROLS TSD Thermal shutdown threshold 165 °C TSD-HYS Hysteresis for thermal shutdown 10 °C (1) (2) VOUT measured in a non-switching, closed-loop configuration at the SNS pin. The enable pin is internally pulled up, so the LM2853 is automatically enabled unless an external enable voltage is applied. Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 5 LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 www.ti.com 6.6 Typical Characteristics VOUT = 1.8 V Figure 1. Efficiency vs ILOAD Figure 2. NFET RDS(ON) vs Temperature VOUT = 2.5 V Figure 3. Efficiency vs ILOAD 6 Figure 4. PFET RDS(ON) vs Temperature Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 LM2853 www.ti.com SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 Typical Characteristics (continued) VOUT = 3.3 V Figure 5. Efficiency vs ILOAD Figure 6. Switching Frequency vs Temperature Figure 7. IQ vs VIN and Temperature Figure 8. ISD vs VIN and Temperature Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 7 LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 www.ti.com 7 Detailed Description 7.1 Overview The LM2853 is a DC-DC buck regulator belonging to Texas Instrument’s synchronous family. Integration of the PWM controller, power switches and compensation network greatly reduces the component count required to implement a switching power supply. A typical application requires only four components: an input capacitor, a soft-start capacitor, an output filter capacitor and an output filter inductor. 7.2 Functional Block Diagram 8 Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 LM2853 www.ti.com SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information 8.1.1 Input Capacitor (CIN) Fast switching of large currents in the buck converter places a heavy demand on the voltage source supplying PVIN. The input capacitor, CIN, supplies extra charge when the switcher needs to draw a burst of current from the supply. The RMS current rating and the voltage rating of the CIN capacitor are therefore important in the selection of CIN. The RMS current specification can be approximated by: (1) where D is the duty cycle, VOUT/VIN. CIN also provides filtering of the supply. Trace resistance and inductance degrade the benefits of the input capacitor, so CIN should be placed very close to PVIN in the layout. A 22 µF or 47 µF ceramic capacitor is typically sufficient for CIN. In parallel with the large input capacitance a smaller capacitor should be added such as a 1 µF ceramic for higher frequency filtering. Ceramic capacitors with high quality dielectrics such as X5R or X7R should be used to provide a constant capacitance across temperature and line variations. For improved load regulation and transient performance, the use of a small 1 µF ceramic capacitor is also recommended as a local bypass for the AVIN pin. 8.1.2 Soft-Start Capacitor (CSS) The DAC that sets the reference voltage of the error amplifier sources a current through a resistor to set the reference voltage. The reference voltage is one half of the output voltage of the switcher due to the 200 kΩ divider connected to the SNS pin. Upon start-up, the output voltage of the switcher tracks the reference voltage with a two to one ratio as the DAC current charges the capacitance connected to the reference voltage node. Internal capacitance of 20 pF is permanently attached to the reference voltage node which is also connected to the soft start pin, SS. Adding a soft-start capacitor externally increases the time it takes for the output voltage to reach its final level. The charging time required for the reference voltage can be estimated using the RC time constant of the DAC resistor and the capacitance connected to the SS pin. Three RC time constant periods are needed for the reference voltage to reach 95% of its final value. The actual start up time will vary with differences in the DAC resistance and higher-order effects. If little or no soft-start capacitance is connected, then the start up time may be determined by the time required for the current limit current to charge the output filter capacitance. The capacitor charging equation I = CΔV/Δt can be used to estimate the start-up time in this case. For example, a part with a 3 V output, a 100 μF output capacitance and a 5A current limit threshold would require a time of 60 µs: (2) Since it is undesirable for the power supply to start up in current limit, a soft-start capacitor must be chosen to force the LM2853 to start up in a more controlled fashion based on the charging of the soft-start capacitance. In this example, suppose a 3 ms start time is desired. Three time constants are required for charging the soft-start capacitor to 95% of the final reference voltage. So in this case RC = 1 ms. The DAC resistor, R, is 450 kΩ so C can be calculated to be 2.2 nF. A 2.2 nF ceramic capacitor can be chosen to yield approximately a 3 ms start-up time. Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 9 LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 www.ti.com Application Information (continued) 8.1.3 Soft-Start Capacitor (CSS) and Fault Conditions Various fault conditions such as short circuit and UVLO of the LM2853 activate internal circuitry designed to control the voltage on the soft-start capacitor. For example, during a short circuit current limit event, the output voltage typically falls to a low voltage. During this time, the soft-start voltage is forced to track the output so that once the short is removed, the LM2853 can restart gracefully from whatever voltage the output reached during the short circuit event. The range of soft-start capacitors is therefore restricted to values 1 nF to 50 nF. 8.1.4 Compensation The LM2853 provides a highly integrated solution to power supply design. The compensation of the LM2853, which is type-three, is included on-chip. The benefit of integrated compensation is straight-forward, simple power supply design. Since the output filter capacitor and inductor values impact the compensation of the control loop, the range of LO, CO and CESR values is restricted in order to ensure stability. 8.1.5 Output Filter Values Table 1 details the recommended inductor and capacitor ranges for the LM2853 that are suggested for various typical output voltages. Values slightly different than those recommended may be used, however the phase margin of the power supply may be degraded. For best performance when output voltage ripple is a concern, ESR values near the minimum of the recommended range should be paired with capacitance values near the maximum. If a minimum output voltage ripple solution from a 5 V input voltage is desired, a 6.8 μH inductor can be paired with a 220 μF (50 mΩ) capacitor without degraded phase margin. Table 1. Recommended LO and CO Values VOUT (V) 0.8 1 1.2 1.5 1.8 2.5 3.0 3.3 VIN (V) LO (µH) CO (µF) CESR (mΩ) MIN MAX MIN MAX MIN MAX 5 4.7 6.8 120 220 70 100 3.3 4.7 4.7 150 220 50 100 5 4.7 6.8 120 220 70 100 3.3 4.7 4.7 150 220 50 100 5 4.7 6.8 120 220 70 100 3.3 4.7 4.7 120 220 60 100 5 4.7 6.8 120 220 70 100 3.3 4.7 4.7 120 220 60 100 5 4.7 6.8 120 220 70 120 3.3 4.7 4.7 100 220 70 120 5 4.7 6.8 120 220 70 150 3.3 4.7 4.7 100 220 80 150 5 4.7 6.8 120 220 70 150 3.3 4.7 4.7 100 220 80 150 5 4.7 6.8 120 220 70 150 8.1.6 Choosing an Inductance Value The current ripple present in the output filter inductor is determined by the input voltage, output voltage, switching frequency and inductance according to Equation 3. (3) 10 Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 LM2853 www.ti.com SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 where ΔIL is the peak to peak current ripple, D is the duty cycle VOUT/VIN, VIN is the input voltage applied to the output stage, VOUT is the output voltage of the switcher, f is the switching frequency and LO is the inductance of the output filter inductor. Knowing the current ripple is important for inductor selection since the peak current through the inductor is the load current plus one half the ripple current. Care must be taken to ensure the peak inductor current does not reach a level high enough to trip the current limit circuitry of the LM2853. As an example, consider a 5 V to 1.2 V conversion and a 550 kHz switching frequency. According to Table 1, a 4.7 µH inductor may be used. Calculating the expected peak-to-peak ripple, (4) The maximum inductor current for a 3A load would therefore be 3A plus 177 mA, 3.177A. As shown in the ripple equation (Equation 4), the current ripple is inversely proportional to inductance. 8.1.7 Output Filter Inductors Once the inductance value is chosen, the key parameter for selecting the output filter inductor is its saturation current (ISAT) specification. Typically ISAT is given by the manufacturer as the current at which the inductance of the coil falls to a certain percentage of the nominal inductance. The ISAT of an inductor used in an application should be greater than the maximum expected inductor current to avoid saturation. Table 2 lists inductors that are suitable in LM2853 applications. Table 2. Recommended Inductors INDUCTANCE PART NUMBER VENDOR 4.7 μF DO3308P-472ML Coilcraft 4.7 μF DO3316P-472ML Coilcraft 4.7 μF MSS1260-472ML Coilcraft 5.2 μF MSS1038-522NL Coilcraft 5.6 μF MSS1260-562ML Coilcraft 6.8 μF DO3316P-682ML Coilcraft 6.8 μF MSS1260-682ML Coilcraft 8.1.8 Output Filter Capacitors The recommended capacitors that may be used in the output filter with the LM2853 are limited in value and ESR range according to Table 1. Table 3 shows some examples of capacitors that can typically be used in a LM2853 application. Table 3. Recommended Capacitors CAPACITANCE (µF) PART NUMBER CHEMISTRY VENDOR 100 594D107X_010C2T Tantalum Vishay-Sprague 100 593D107X_010D2_E3 Tantalum Vishay-Sprague 100 TPSC107M006#0075 Tantalum AVX 100 NOSD107M006#0080 Niobium Oxide AVX 100 NOSC107M004#0070 Niobium Oxide AVX 120 594D127X_6R3C2T Tantalum Vishay-Sprague 150 594D157X_010C2T Tantalum Vishay-Sprague 150 595D157X_010D2T Tantalum Vishay-Sprague 150 591D157X_6R3C2_20H Tantalum Vishay-Sprague 150 TPSD157M006#0050 Tantalum AVX 150 TPSC157M004#0070 Tantalum AVX 150 NOSD157M006#0070 Niobium Oxide AVX 220 594D227X_6R3D2T Tantalum Vishay-Sprague Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 11 LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 www.ti.com Table 3. Recommended Capacitors (continued) 12 CAPACITANCE (µF) PART NUMBER CHEMISTRY VENDOR 220 591D227X_6R3D2_20H Tantalum Vishay-Sprague 220 591D227X_010D2_20H Tantalum Vishay-Sprague 220 593D227X_6R3D2_E3 Tantalum Vishay-Sprague 220 TPSD227M006#0050 Tantalum AVX 220 NOSD227M0040060 Niobium Oxide AVX Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 LM2853 www.ti.com SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 8.1.9 Split-Rail Operation The LM2853 can be powered using two separate voltages for AVIN and PVIN. AVIN is the supply for the control logic; PVIN is the supply for the power FETs. The output filter components need to be chosen based on the value of PVIN. For PVIN levels lower than 3.3 V, use output filter component values recommended for 3.3 V. PVIN must always be equal to or less than AVIN. Figure 9. Split-Rail Operation Example Circuit 8.1.10 Switch Node Protection The LM2853 includes protection circuitry that monitors the voltage on the switch pin. Under certain fault conditions, switching is disabled in order to protect the switching devices. One side effect of the protection circuitry may be observed when power to the LM2853 is applied with no or light load on the output. The output will regulate to the rated voltage, but no switching may be observed. As soon as the output is loaded, the LM2853 will begin normal switching operation. 8.2 Typical Application Figure 10. LM2853 Typical Application Circuit Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 13 LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 www.ti.com 9 Layout 9.1 Layout Guidelines These are several guidelines to follow while designing the PCB layout for an LM2853 application. 1. The input bulk capacitor, CIN, should be placed very close to the PVIN pin to keep the resistance as low as possible between the capacitor and the pin. High current levels will be present in this connection. 2. All ground connections must be tied together. Use a broad ground plane, for example a completely filled back plane, to establish the lowest resistance possible between all ground connections. 3. The sense pin connection should be made as close to the load as possible so that the voltage at the load is the expected regulated value. The sense line should not run too close to nodes with high dV/dt or dl/dt (such as the switch node) to minimize interference. 4. The switch node connections should be low resistance to reduce power losses. Low resistance means the trace between the switch pin and the inductor should be wide. However, the area of the switch node should not be too large since EMI increases with greater area. So connect the inductor to the switch pin with a short, but wide trace. Other high current connections in the application such as PVIN and VOUT assume the same trade off between low resistance and EMI. 5. Allow area under the chip to solder the entire exposed die attach pad to ground for improved thermal performance. Lab measurements also show improved regulation performance when the exposed pad is well grounded. 9.2 Example Circuit Schematic and Bill of Materials Figure 11. LM2853 Example Circuit Schematic Table 4. Bill of Materials for 5 V to 3.3 V Conversion ID PART NUMBER TYPE SIZE PARAMETERS QTY U1 LM2853MH-3.3 3A Buck HTSSOP-14 3.3 V 1 VENDOR TI CIN GRM31CR60J476ME19 Capacitor 1206 47 µF 1 Murata CBYP GRM21BR71C105KA01 Capacitor 0805 1 µF 1 Murata CSS VJ0805Y222KXXA Capacitor 0603 2.2 nF 1 Vishay-Vitramon LO DO3316P-682 Inductor DO3316P 6.8 µH 1 Coilcraft CO 594D127X06R3C2T Capacitor C Case 120 μF (85 mΩ) 1 Vishay-Sprague Table 5. Bill of Materials for 3.3 V to 1.2 V Conversion 14 ID PART NUMBER TYPE SIZE PARAMETERS QTY VENDOR U1 LM2853MH-1.2 3A Buck HTSSOP-14 1.2 V 1 TI Murata CIN GRM31CR60J476ME19 Capacitor 1206 47 µF 1 CBYP GRM21BR71C105KA01 Capacitor 0805 1 µF 1 Murata CSS VJ0805Y222KXXA Capacitor 0603 2.2 nF 1 Vishay-Vitramon LO DO3316P-472 Inductor DO3316P 4.7 μH 1 Coilcraft Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 LM2853 www.ti.com SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 Table 5. Bill of Materials for 3.3 V to 1.2 V Conversion (continued) ID PART NUMBER TYPE SIZE PARAMETERS QTY VENDOR CO NOSD157M006R0070 Capacitor D Case 150 μF (70 mΩ) 1 AVX Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 15 LM2853 SNVS459A – OCTOBER 2006 – REVISED SEPTEMBER 2017 www.ti.com 10 Device and Documentation Support 10.1 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 10.2 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 10.3 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 10.4 Electrostatic Discharge Caution This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 10.5 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 11 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 16 Submit Documentation Feedback Copyright © 2006–2017, Texas Instruments Incorporated Product Folder Links: LM2853 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) LM2853MH-1.0/NOPB ACTIVE HTSSOP PWP 14 94 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -1.0 LM2853MH-1.2/NOPB ACTIVE HTSSOP PWP 14 94 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -1.2 LM2853MH-1.5/NOPB ACTIVE HTSSOP PWP 14 94 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -1.5 LM2853MH-1.8/NOPB ACTIVE HTSSOP PWP 14 94 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -1.8 LM2853MH-2.5/NOPB ACTIVE HTSSOP PWP 14 94 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -2.5 LM2853MH-3.0/NOPB ACTIVE HTSSOP PWP 14 94 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -3.0 LM2853MH-3.3/NOPB ACTIVE HTSSOP PWP 14 94 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -3.3 LM2853MHX-1.0/NOPB ACTIVE HTSSOP PWP 14 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -1.0 LM2853MHX-1.2/NOPB ACTIVE HTSSOP PWP 14 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -1.2 LM2853MHX-1.5/NOPB ACTIVE HTSSOP PWP 14 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -1.5 LM2853MHX-1.8/NOPB ACTIVE HTSSOP PWP 14 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -1.8 LM2853MHX-2.5/NOPB ACTIVE HTSSOP PWP 14 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -2.5 LM2853MHX-3.3/NOPB ACTIVE HTSSOP PWP 14 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM2853 -3.3 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of