Product is End of Life 3/2014 SiP12502 Vishay Siliconix 500 mA - Fixed Output Boost Converter for Single or Dual Cell DESCRIPTION FEATURES SiP12502 is a boost converter IC with fixed output voltage for single or double cell NiMH or Alkaline battery pack. Featuring with an internal low resistance power MOSFET, it is capable of starting up with a low battery voltage of 0.85 V. It only needs four external components (an inductor, a diode and two capacitors) to construct a step-up converter. For best efficiency performance, it is designed to operate in PWM mode with a 300 kHZ switching frequency under normal load and in PFM mode under light load. The voltage-mode control loop is internally compensated, simplifying converter design and reducing external parts count. It accepts input voltages from 0.85 V to 5 V, providing fixed output voltages of 2.0 V, 3.3 V, and 5.0 V. It also features low shutdown current of under 1 µA, over voltage protection, thermal shutdown protection, a power good output and antiringing control to minimize EMI. • Voltage mode control with internal frequency compensation • 0.85 V to 5.0 V input voltage range • Fixed output voltage options - 2.0 V, 3.3 V, and 5.0 V • Other voltages available upon request • PWM control with 300 kHz fixed switching frequency • PFM control for light load • Powered from the output voltage supply • Integrated UVLO and soft-start • Logic controlled shutdown (< 1 µA) • 85 % typical efficiency • Internal power MOS switch: 0.2 Ω at 3.3 V output • Antiringing switch to minimize EMI • Power good output • Shutdown input • Minimum external components • PowerPAK® MLP33-6 package, (DFN-6, 3 x 3) • Over voltage protection SiP12502 is available in a lead (Pb)-free 6-pin, PowerPAK MLP33 package and is specified to operate over the industrial temperature range of - 40 °C to 85 °C. APPLICATIONS • • • • • • Portable applications Battery-powered equipment Handheld devices Digital cameras Wireless handsets LCD and OLED bias TYPICAL APPLICATION CIRCUIT VIN 10 µH 2 10 µF VIN XSHD 1 XSHD LX 6 MBR0520 VOUT 47 µF SiP12502 3 PGOOD VOUT GND 4 PGOOD 330 KΩ 5 Document Number: 73578 S09-1456-Rev. B, 03-Aug-09 www.vishay.com 1 Product is End of Life 3/2014 SiP12502 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS (all voltages referenced to GND = 0 V) Parameter Limit Input Voltage, VIN - 0.3 to VOUT + 0.5 LX Voltage Output Voltage, VOUT V - 0.3 to 6 - 0.3 to VIN + 0.5 XSHD Voltage PGOOD Voltage - 0.3 to 6 Maximum Junction Temperature 150 Storage Temperature - 55 to 150 Operating Junction Temperature °C 125 PowerPAK MLP33-6 (TA = 70 °C)a Power Dissipationa Thermal Resistance Unit - 0.3 to 6 b 1100 mW 50 °C/W PowerPAK MLP33-6 Notes: a. Derate 20 mW/°C above 70 °C. b. Device mounted with all leads soldered or welded to PC board. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING RANGE (all voltages referenced to GND = 0 V) Parameter Limit Input Voltage, VIN Unit 0.85 to 5.0 Output Voltage, VOUT 2.0 to 5 V 0 to VIN XSHD Voltage 0 to VOUT + 0.5 LX Voltage PGOOD Voltage 0 to 5 Operating Temperature Range - 40 to 85 °C SPECIFICATIONS Limits Test Conditions Unless Specified Parameter Symbol VIN = 1.2 V, VOUT = Vnome, TA = 25 °C Minimum Start-Up Voltage VSTART ILOAD = 1 mA Minimum Operating Voltaged VHOLD XSHD = VIN Output Voltage Accuracy VOUT UVLO VUVLO Rising VOUT a Temp. Full Min. b Typ.c Max.b 0.65 0.85 0.55 - 1.5 + 1.5 - 25 °C to 85 °C - 3.0 + 3.0 Full - 3.5 1.8 VUVLOHYST Full 0.100 Maximum PWM Duty Cycle MAXDTY Full 80 87 PWM Switching Frequency fOSC Full 225 300 www.vishay.com 2 V % + 3.5 Full UVLO Hysteresis Unit 2 V % 375 kHz Document Number: 73578 S09-1456-Rev. B, 03-Aug-09 Product is End of Life 3/2014 SiP12502 Vishay Siliconix SPECIFICATIONS Limits Test Conditions Unless Specified Symbol VIN = 1.2 V, VOUT = Vnome, TA = 25 °C Temp. IOUT1 VOUT = Vnom X 0.95 Full Supply Current 2 IOUT2 VOUT = 6 V, Vnom + 0.6 V, VLX > VIN Supply Current 3 IOUT3 VOUT = Vnom + 0.5 V, VLX < VIN Stand-By Current ISTB XSHD = 0 V, not including switch leakage NMOS Switch Leakage ILEAK LX = 5 V RDS(on) VOUT = 3.3 V Parameter Supply Current 1 NMOS Switch On Resistance a Min. b Typ.c Max.b 330 620 150 75 1 1 Full 3 IFTOF 22 VXSHDL Softstart Time tSTART 0.8 V ≤ VIN ≤ 0.9 V Full 0.55 0.9 V < VIN ≤ 2 V Full 0.8 2 V < VIN ≤ 5 V Full 1.2 Full 0.2 ViN = 1.8 V 1.6 VOV 110 Over Voltage Hysteresis VOVHYST 10 Thermal Shutdown TSHD 160 Thermal Shutdown Hysteresis THYST 20 PGOOD Threshold VPGOOD VPGOODHYST mA V Over Voltage Threshold PGOOD Hysteresis Ω 0.2 IWTOF XSHD Input Low Level 2 10 PFM to PWM Current Threshold VXSHDH µA Full PWM to PFM Current Threshold XSHD Input High Level Unit 85 90 ms % °C 95 2 % PGOOD Output Voltage Low PGGOODL VOUT = 3.3 V, IPGOOD = 1 mA Full 0.15 0.2 V PGOOD Output Leakage Current PGGOOD VPGOOD = 5 V Full 0.01 1 µA Notes: a. Full = - 40 °C to 85 °C. b. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum (- 40 °C to 85 °C). c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. d. Minimum operating voltage is determined by the battery’s capability to provide energy as it is deeply discharged. e. Vnom equals voltage output for part selected. Document Number: 73578 S09-1456-Rev. B, 03-Aug-09 www.vishay.com 3 Product is End of Life 3/2014 SiP12502 Vishay Siliconix PIN CONFIGURATION AND TRUTH TABLE PowerPAK MLP33-6 XSHD 1 6 LX VIN 2 5 GND VOUT 3 4 PGOOD Top View ORDERING INFORMATION Part Number Voltage Output SiP12502DMP-20-E3 2.0 V SiP12502DMP-33-E3 3.3 V SiP12502DMP-50-E3 5.0 V Temperature Range Marking 502A - 40 °C to 85 °C 502E 502G PIN DESCRIPTION Pin Number Name 1 XSDH 2 VIN 3 VOUT 4 PGOOD 5 GND 6 LX Function Logic controlled shutdown input, XSHD = high: normal operation, XSHD = low: shutdown Input voltage Output of the boost converter and power source for the IC battery Power good comparator output Signal and power ground Switch pin PIN FUNCTIONS XSHD (Pin 1) PGOOD (Pin 4) XSHD is a logic-level shutdown control pin. When XSHD is low, the IC’s switching is disabled and an antiringing switch is connected between LX and VIN. When XSHD is high, the IC is working in normal operation. PGOOD is the open-drain output pin of the power good comparator. It is low when VOUT is 10 % lower than its regulation voltage. After the soft start is finished and VOUT is higher than 90 % of its regulation voltage, PGOOD will go high. Its hysteresis is 2 %. VIN (Pin 2) VIN is the pin connected to the battery input voltage. At startup, SIP12502 is powered from the voltage at the VIN pin. Once VOUT exceeds VIN, the SIP12502 is powered from VOUT. This increases the drive to the gate of the internal power switch, to allow higher maximum output currents and higher converter efficiency. VOUT (Pin 3) VOUT is the output of the boost converter and also the power source for the IC. www.vishay.com 4 GND (Pin 5) GND is the ground pin for signal and power ground. LX (Pin 6) LX is connects to the drain of the internal power MOSFET (boost switch). Externally, the LX pin should be connected to the boost inductor and Schottky diode. If the inductor current falls to zero, or XSHD is low, an internal antiringing switch is connected from LX to VIN to minimize EMI. Document Number: 73578 S09-1456-Rev. B, 03-Aug-09 Product is End of Life 3/2014 SiP12502 Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM DETAILED OPERATION SiP12502 is a 300 kHz boost converter IC, packaged in 6-pin MLP33 PowerPAKTM package. With start-up from input voltages as low as 0.65 V, this device features fixed frequency voltage mode PWM control with internal frequency compensation. With its low rDS(on) internal power MOSFET, this device maintains high efficiency over a wide range of load currents. Under light load conditions, it switches to PFM mode to maintain high efficiency. A power good signal is available to monitor the output voltage. PWM operation After the soft-start interval is over, the device works in PWM operation with a fixed frequency of 300 kHz, with automatic switch-over to PFM operation during light load conditions. PFM Operation When operating into light loads, the SiP12502 automatically switches to PFM operation. This reduces gate charge losses in the boost switch, hence raising converter efficiency. Low Voltage Start-Up SiP12502 is designed to start-up at input voltage of typically 0.65 V. At start-up, VOUT is lower than VIN due to the voltage drop of the Schottky diode. Therefore, the device uses VIN as the power source for its control logic and internal gate drive, until VOUT exceeds VIN. During the start-up interval, the boost switch’s conduction interval during each cycle is determined by the time taken for the inductor current to reach internal current limit, followed by a fixed off time before the switch is allowed to turn on again. Once VOUT exceeds VIN, the device uses VOUT as the IC’s power source. When VOUT exceeds 1.89 V, the device engages its built-in soft-start circuitry. Over Voltage Protection If the output voltage is above 10 % of the regulation voltage, the device will turn off the internal power MOSFET and wait until the output voltage falls below the regulation voltage, then the PWM operation is enabled again. Thermal Shutdown Protection If the internal device temperature rises above 160 °C, the device will turn off the internal power MOSFET. Once the die temperature falls below 140 °C, the device performs a new soft-start cycle, the converter resumes normal operation. Antiringing Control Soft-Start During soft-start, the loop compensation guarantees the slow increase of output voltage, so that no large voltage overshoot or inrush current transients occur when the soft-start period ends. Document Number: 73578 S09-1456-Rev. B, 03-Aug-09 The antiringing control circuitry prevents high frequency ringing at the LX pin as the inductor current goes to zero by damping the resonant circuit formed by L and CLX (capacitance on LX pin). When the IC is shutdown, this antiringing switch is also turned on. www.vishay.com 5 Product is End of Life 3/2014 SiP12502 Vishay Siliconix TYPICAL CHARACTERISTICS 0.180 0.40 0.175 Supply Current 2 (mA) Supply Current 1 (mA) 0.35 0.30 0.170 0.165 0.160 0.155 0.150 0.25 0.145 0.20 - 50 0.140 - 30 - 10 10 30 50 70 - 50 90 - 30 - 10 10 30 50 70 90 Temperature (°C) Temperature (°C) Supply Current 2 vs. Temperature Supply Current 1 vs. Temperature 93 320 92 310 91 90 % Duty Cycle Frequency (kHz) 300 290 280 89 88 87 86 270 85 260 84 250 - 50 - 30 - 10 10 30 50 70 83 - 60 90 - 40 - 20 0 20 40 60 80 100 Temperature (°C) Temperature (°C) Maximum PWM Duty Cycle vs. Temperature Frequency vs. Temperature 1.0 0.20 0.9 Shutdown Input Voltage Threshold (V) RDS(on) Ω 0.15 0.10 0.8 0.7 0.6 0.5 0.4 0.05 0.3 0.00 0 1 2 3 4 VOUT (V) RDS(on) vs. Output Voltage www.vishay.com 6 5 6 0.2 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VIN (V) Shutdown Input Voltage Threshold vs. VIN Document Number: 73578 S09-1456-Rev. B, 03-Aug-09 Product is End of Life 3/2014 SiP12502 Vishay Siliconix TYPICAL CHARACTERISTICS 4 1.2 VIN = 5.0 V 3 VOUT Voltage Accuracy (%) Shutdown Threshold (V) 1.0 0.8 VIN = 2.0 V 0.6 VIN = 0.8 V 0.4 0.2 0.0 - 50 1 0 -1 -2 -3 - 30 - 10 10 30 50 70 -4 - 50 90 - 10 10 30 50 Temperature (°C) Temperature (°C) VOUT Voltage vs. Temperature 90 100 80 90 70 80 70 90 70 Efficiency (%) 50 40 30 60 50 40 30 20 20 10 10 0 0.1 - 30 Shutdown Threshold vs. Temperature 60 Efficiency (%) 2 1 10 100 1000 Load Current (mA) 0 0.1 1 10 100 1000 Load Current (mA) VIN = 2.4 V, VOUT = 3.3 V VIN = 1.2 V, VOUT = 2 V 100 90 80 Efficiency (%) 70 60 50 40 30 20 10 0 0.1 1 10 100 1000 Load Current (mA) VIN = 2.4 V, VOUT = 5 V Document Number: 73578 S09-1456-Rev. B, 03-Aug-09 www.vishay.com 7 Product is End of Life 3/2014 SiP12502 Vishay Siliconix TYPICAL WAVEFORMS VOUT 50 mV/div VOUT 20 mV/div LX 2 V/div LX 2 V/div 1 µs/div 100 µs/div Typical Switching Waveform PWM Mode VIN = 1.2 V, VOUT = 3.3 V, Load Current = 150 mA, L = 10 µH; COUT = 47 µF Typical Switching Waveform PFM Mode VIN = 1.2 V, VOUT = 3.3 V, Load Current = 10 mA, L = 10 µH; COUT = 47 µF VOUT 1 V/div PGOOD 1 V/div 5 ms/div Soft Start and PGOOD VIN = 1.2 V, VOUT = 3.3 V, Load Current = 50 mA, L = 10 µH; COUT = 47 µF Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and reliability data, see www.vishay.com/ppg?73578. www.vishay.com 8 Document Number: 73578 S09-1456-Rev. B, 03-Aug-09 Package Information Vishay Siliconix PowerPAKr MLP33-6, 8 and 10 (POWER IC ONLY) 4xQ // ccc A NX 8 Detail D TopView C A2 A1 A3 0.08 C Side View Detail C NX b bbb M C A A e 1 ÉÉÉ ÇÇ ÉÉÉ ÇÇ ÉÉÉ Detail C A1 Seating Plane C 5 ddd M C 2 Exposed Pad (Optional) L 7 R2 R 11 D E2 L2 E2/2 Detail D A B NxK See Detail A 7 N 8 N-1 6 See Detail B D2/2 (ND-1) x Pin 1 Mark 4 e 9 D2 aaa C 9 Bottom View 2X 2X Datum A or B ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ aaa C 1 E L2 Datum A or B NX R1 NX R1 L e/2 e Even pin/Side L2 pin Tip e pin Tip 5 Odd pin/Side 5 Detail B 0.17 min L1 Exposed Slug/Heat Sink L2 This Feature Applies To Both Ends of The Package 0.17 0.30 B Exposed Metalized Feature Detail A Document Number: 72820 28-Jan-04 10 Edge of Plastic Body www.vishay.com 1 Package Information Vishay Siliconix PowerPAKr MLP33-6, 8, 10 N = 6 PITCH: 0.95 mm N = 8 PITCH: 0.65 mm N = 10 PITCH: 0.50 mm MILLIMETERS* Dim A A1 A2 A3 aaa b-6 b-8 b-10 bbb ccc D D2 ddd E E2 e-6 e-8 e-10 K L L1-6 L1-8 L1-10 L2 R Ref R1 Ref-6 R1 Ref-8 R1 Ref-10 Q INCHES Basic Min Nom Max Basic Min Nom Max Notes − 0.80 0.90 1.00 − 0.031 0.035 0.039 1, 2 − 0.00 0.025 0.05 − 0.000 0.001 0.002 1, 2 − 0.65 0.70 0.75 − 0.026 0.028 0.030 1, 2 − 0.15 0.20 0.25 − 0.006 0.008 0.010 1, 2 − − 0.10 − − − 0.004 − 1, 2 − 0.33 0.35 0.43 − 0.013 0.014 0.017 1, 2, 8 − 0.285 0.305 0.385 − 0.011 0.012 0.015 1, 2, 8 − 0.18 0.20 0.28 − 0.007 0.008 0.011 1, 2, 8 − − 0.10 − − − 0.004 − 1, 2 − − 0.10 − − − 0.004 − 1, 2 3.00 − − − 0.118 − − − 1, 2, 8 − 1.92 2.02 2.12 − 0.076 0.080 0.083 1, 2, 8 − − 0.05 − − 3.00 − − − 0.118 − − − 1, 2, 8 − 1.10 1.20 1.30 − 0.043 0.047 0.051 1, 2, 8 − − 0.95 − − − 0.037 − 1, 2 − − 0.65 − − − 0.026 − 1, 2 − − 0.50 − − − 0.020 − 1, 2 − 0.20 − − − 0.008 − − 5, 11 − 0.20 0.29 0.45 − 0.008 0.011 0.018 1, 2, 8 − 0.16 0.24 0.40 − 0.006 0.009 0.016 1, 2, 8 − 0.16 0.24 0.40 − 0.006 0.009 0.016 1, 2, 8 − − − − − − − − 1, 2, 8 − − − 0.125 − − − 0.005 5, 11 − − 0.15 − − − 0.006 − 1, 2, 8 − − 0.127 − − − 0.005 − 1, 2, 8 − − 0.15 − − − 0.006 − 1, 2, 8 − − 0.075 − − − 0.003 − 1, 2, 8 − 0_ 10_ 12_ − 0_ 10_ 12_ 1, 2 0.002 1, 2 * Use millimeters as the primary measurement. ECN: S-40082—Rev. A, 02-Feb-04 DWG: 5925 NOTES: 1. Dimensioning and tolerancing conform to ASME Y14.5M-1994. 2. All dimensions are in millimeters. All angels are in degrees. 3. N is the total number of pins. 4. The pin #1 identifier and pin numbering convention shall conform to JESD 95-1 SPP-012. Details of pin #1 identifier is located within the zone indicated. The pin #1 identifier is marked. 5. Dimension b applies to metallized pin and is measured between 0.15 mm and 0.20 mm from the pin tip. 6. ND refers to the maximum number of pins on the D side. 7. Depopulation of pins is allowed and will be called out on the individual variation. 8. Coplanarity applies to the exposed heat sink slug as well as the pins. 9. Profile tolerance (aaa) will be applicable only to the plastic body and not to the metallized features (such as the pin tips and tie bars.) Metallized features may protrude a maximum of L2 from the plastic body profile. 10. L1 max is not called out, the metallized feature will extend to the exposed pad. Thus, the 0.17-mm gap does not apply. 11. The corner will be sharp unless otherwise specified with radius dimensions. www.vishay.com 2 Document Number: 72820 28-Jan-04 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein. Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. Material Category Policy Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (EEE) - recast, unless otherwise specified as non-compliant. Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU. Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21 conform to JEDEC JS709A standards. Revision: 02-Oct-12 1 Document Number: 91000