SEMTECH SC1592

SC1592 Low Dropout High Performance Adjustable Positive Voltage Regulator POWER MANAGEMENT Description Features The SC1592 is a 3A low dropout high performance ‹ Wide input range, V = 1.25V to 16V, IN linear voltage regulator, that provides a low voltage, high V = 3V to 16V CNTL current output with a minimum of external components, ‹ 3A Guaranteed Output Current utilizing dual supply configuration. ‹ 260mV (typ) @ 3A dropout voltage in dual supply mode The SC1592 offers a wide input voltage range from 1.25V ‹ 1% Initial Accuracy to 16V and is ideal for applications that need to convert ‹ Adjustable output voltage, down to 0.8V down to 0.8V. ‹ Programmable current limiting and thermal shutdown Additionally, the SC1592 is fully protected with an exter- ‹ Fast transient response nally programmable current limit, and thermal shutdown. ‹ Excellent line and load regulation Also, there is an EN input which enables or shuts down ‹ Power SO-8 and 7-lead DDPAK the device. The SC1592 voltage regulator is available in 7-lead DDPAK Applications and SOIC-8L EDP packages. ‹ Low voltage logic supplies ‹ Microprocessor and chipset supplies ‹ Split plane microprocessor supplies ‹ Advanced graphics cards supplies ‹ Sound cards and auxiliary power supplies ‹ SMPS post regulator Typical Application Circuit +3.3V Vcntl +1.8V Vout CNTL OUT C1 C3 1uF R2 47uF(cer) SC1592 66.5 +2.5V Vin IN SENSE R2 GND EN ILIM C2 V = (1+ )• V OUT REF R3 R3 10uF 53 V = 0.8V typ. REF R1 TTL 100 1 www.semtech.com Revision: November 21, 2011 SC1592 POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. Pl arameter Sm ymbo Ms aximu Unit PV ower Input Voltage 1V 8 IN CV ontrol Input Voltage 1V 8 CNTL OI utput Current 5A OUT PP ower Dissipation IW nternally Limited D Thermal Resistance Junction to Ambient DDPAK (1sq. in.) θ 29 °C/W JA SOIC-8L EDP (1sq. in.) 36.5 Thermal Resistance Junction to Case DDPAK 3 °C/W θ JC SOIC-8L EDP 5.5 JT unction Temperature Range -C 40 to +125 ° J ST torage Temperature Range -C 65 to +150 ° STG LT ead Temperature (Soldering) 10 Sec. 3C 00 ° LEAD ED SD Rating (Human Body Model) E2 S kV Electrical Characteristics Unless specified: V = 2.5V, V = V = 3.3V, V = 1.8V, I = 10mA, R = 100Ω, T = T = 25°C. IN EN CNTL OUT OUT LIM J A Values in bold indicate -40°C < T < +125°C. J Pl arameterSs ymboTn est Condition Mp i Tx y Ms a Unit CV ontrol Voltage V = V 36 1 V CNTL OUT REF RV eference Voltage V = V 792 800 808 mV REF OUT REF CI ontrol Pin Current V = V = V = 16V 3 8 CNTL_EN CNTL IN EN V = V ; I = 0 mA OUT REF O V = V = V = 16V 24 CNTL IN EN V = V ; I = 3A OUT REF O Control Pin Current in I V = V = 16V 1 5 μA CNTL_DIS CNTL IN Shutdown V = 0 EN VLG ine Regulation RE 2.5V ≤ V ≤11 6V 0.0 0.1 %/V IN (LINE) IN VLG ine Regulation RE 3.3V ≤ V ≤ 16V, 0.1 0.4 %/V CNTL (CNTL) CNTL V = V OUT REF (1) Load Regulation REG 10mA ≤ I ≤ 2A, T=8 25°C 05 . 1% . (LOAD) OUT J 10mA ≤ I ≤ 3A, -40 < T<4 125°C 1. 3 % OUT J DV ropout Voltage I = 2A; V=0 0.98 Vnom 16 320 mV DO OUT OUT I = 3A; V=0 0.98 Vnom 26 520 OUT OUT © 2011 Semtech Corporation 2 www.semtech.com SC1592 POWER MANAGEMENT Electrical Characteristics (Cont.) Unless specified: V = 2.5V, V = V = 3.3V, V = 1.8V, I = 10mA, R = 100Ω, T = T = 25°C. IN EN CNTL OUT OUT LIM J A Values in bold indicate -40°C < T < +125°C. J Pl arameterSs ymboTn est Condition Mp i Tx y Ms a Unit TT hermal Shutdown 1C 50 ° SHUT Thermal Shutdown 1C 0 ° Hysteresis SENSE Input Current 1A μ Low Level EN 0.8 V High Level EN 2 V EV N Input Current = V=5 5V 5 100 μA EN CNTL EN Impedance 6K 5 Ω (2) Current Limit Accuracy I -0 20 +% 2 LIM Notes: (1) For load regulation use a 1ms current pulse width, d.c. ≤ 10% when measuring VOUT. 240• V OUT (2) Current limit is programmable, I ≈ LIM R LIM © 2011 Semtech Corporation 3 www.semtech.com SC1592 POWER MANAGEMENT Pin Configurations Ordering Information (1) Pe art Number Packag Temp. Range (T ) Top View J SL C1592IMTRTC O-263-7 -40°C to +125° Pin Function TAB (3) SC1592IMTRT 1M ILI 2N I SP C1592ISTR SOIC-8L ED 3L CNT (3) SC1592ISTRT 4D GN (2) SC1592EVB Evaluation Board 5T OU Notes: 6E SENS (1) Only available in tape and reel packaging. A reel 7N E contains 800 devices for TO-263 package and 2500 TD AB GN devices for SOIC package. (2) When ordering Evaluation Board please specify pack- (TO-263-7L DDPAK) age needed (TO-263(DDPAK) or SOIC(EDP)). (3) Lead free product. Top View Bottom View GND ILIM 1 8 EN 8 1 ILIM EN IN 2 7 SENSE SENSE 7 Exposed 2 IN Die Pad IN 3 6 OUT OUT 6 3 IN CNTL 4 5 OUT 4 OUT 5 CNTL (SOIC-8L EDP) (SOIC-8L EDP) Pin Descriptions Pin # Pin #Pn in Name Pin Functio DDPAK SOIC 11I. LIM Externally programmable current limit should be set at < 5A 232N , I This is the collector input to the power device. The ouput load current is supplied through this pin. 34 CNTL This pin is the bias supply for the control circuitry. The current flow into this pin will be approximately 1% of the output current. For the device to regulate, the voltage on this pin must be at least 1.5V greater than the output voltage, but no less than V CNTL_MIN. 4D , TABPD A G. N Ground 565T ,O. U This is the power output of the device 67S. ENSE This is a feedback input 78EV N Enable input. When high, should be less or equal to CNTL. © 2011 Semtech Corporation 4 www.semtech.com SC1592 POWER MANAGEMENT Block Diagram Figure 1 ⎡ ⎤ V OUT R ≈ 240 X LIM ⎢ ⎥ I ⎣ LIM ⎦ I = Selected current limit value LIM V = Regulated output voltage OUT R = Externally programmable current limit resistor. LIM Accuracy of the current limit setting is better than ±20% over full operating temperature range. *Internal ESD structure. In cases where EN is permanently tied to V , it’s recommended that a 10-20k IN resistor should be inserted in the link between EN and V . IN © 2011 Semtech Corporation 5 www.semtech.com SC1592 POWER MANAGEMENT Application Information The SC1592 is a 3A low dropout high performance linear voltage regulator. The SC1592 can be used for voltage +1.8V Vout +3.3V Vcntl CNTL OUT applications as low as 0.8V and is ideal for down C1 C3 conversion utilizing dual supply configuration. This allows 2.2uF 100uF R2 SC1592 66.5 for extremely low dropout voltages with excellent load +2.5V Vin IN SENSE and line regulation. The SC1592 can be utilized in high EN GND ILIM C2 10k voltage applications, with V and V up to 16V, providing 22uF IN CNTL R3 53 there is adequate thermal management. R1 100 R2 SC1592 is designed to meet stringent requirements of V = (1+ )• V OUT REF R3 current generation microprocessors and other sensitive V = 0.8V typ. electronic devices. This is possible by employing an REF additional bias source, V . The voltage of this supply Figure 2 CNTL needs to be at least 1.5V greater than the output voltage The circuit in Figure 2 shows a typical application of 2.5V in order to achieve low dropout, typically less then 300mV. to 1.8V conversion with a 3.3V control supply and the load range of up to 3A steady state. Considering the Unlike most of the other high current linear regulators, approximate 2W power being dissipated by the pass the SC1592 provides a programmable current limit which element of the SC1592, we are still able to choose an SO-8 EDP package with T = 36.5°C/W mount on the can be set with a single resistor. The value of the JA 1sq.in. copper pad allocated for adequate heat transfer. programming resistor is: The ambient temperature in this case should not exceed 240• V OUT I ≈ 50°C. If this temperature range is too restrictive, then LIM R LIM the DDPAK can be utilized, having T = 29°C/W mount JA on the same size copper pad. where I = selected current limit value LIM V = regulated output voltage OUT Input capacitor: A minimum of 10μF ceramic capacitor R = programmable current limit resistor LIM is recommended to be placed directly next to the Vin pin. This allows for the device being some distance from any The SC1592 has a fast transient response that allows it bulk capacitance on the rail. Additionally, bulk to handle large load changes associated with high current capacitance may be added closely to the input supply applications. Proper selection of the of the output pin of the SC1592 to ensure that Vin does not sag, capacitor and it’s ESR value determines stable operation improving load transient response. and optimizes performance. Output capacitor: A minimum bulk capacitance of 33μF, The typical application shown in Figure 2 was tested with along with a 0.1μF ceramic decoupling capacitor is a wide range of different capacitors. The circuit was found recommended. Increasing the bulk capacitance will to be unconditionally stable with capacitor values from improve the overall transient response. The use of 47μF to 330μF and ESR ranging from 0.5mΩ to greater multiple lower value ceramic capacitors in parallel to then 75mΩ. achieve the desired bulk capacitance will not cause stability issues. Although designed for use with ceramic It’s recommended to maintain 5-10mA through the output output capacitors, the SC1592 is extremely tolerant of divider network in order to have a tight load and line output capacitor ESR values and thus will also work regulation. Initial accuracy of the internal voltage comfortably with tantalum output capacitors. reference V = 0.8V ±1% over full temperature range. REF This commands the use of 0.5% or better accuracy resistors to build a precision power supply. © 2011 Semtech Corporation 6 www.semtech.com SC1592 POWER MANAGEMENT Typical Characteristics Load Transient Reponse V = 2.5V IN V = 1.8V OUT V = 3.3V CNTL C = 22uF IN C = 100uF OUT Istep: 15mA to 3A slew rate: 2 .5 A/ uS Time (2ms/div) V = 2.5V IN V = 1.8V OUT V = 3.3V CNTL C = 22uF IN C = 100uF OUT Istep: 15 mA to 3A slew rate: 2.5A/ uS Time (200us/div) © 2011 Semtech Corporation 7 www.semtech.com V V OUT V V IN IN OUT I out I out 20mV/div 20mV/div SC1592 POWER MANAGEMENT Typical Characteristics (Cont.) Load Regulation 2.00 1.95 V = 3.3V CNTL V = 2.5V 1.90 IN 1.85 1.80 1.75 1.70 1.65 1.60 1.55 1.50 0.00.5 1.01.5 2.02.5 3.0 OUTPUT CURRENT (A) Output Voltage vs. Temperature 2 V = 3.3V 1.95 CNTL V = 2.5V IN 1.9 I = 10mA OUT 1.85 1.8 1.75 1.7 1.65 1.6 1.55 1.5 -40 -20 0 2040 6080 100 120 o TEMPERATURE ( C) © 2011 Semtech Corporation 8 www.semtech.com OUTPUT VOLTAGE (V) OUTPUT VOLTAGE(V) SC1592 POWER MANAGEMENT Typical Characteristics (Cont.) EnableThreshold vs. Temperature 2 V = 3.3V CNTL 1.8 V = 2.5V IN V = 1.8V OUT 1.6 I = 10mA OUT 1.4 1.2 1 0.8 0.6 0.4 -40 -20 0 20 40 60 80 100 120 o TEMPERATURE ( C) © 2011 Semtech Corporation 9 www.semtech.com OUTPUT VOLTAGE (V) SC1592 POWER MANAGEMENT Typical Characteristics (Cont.) Dropout Voltage (Control Supply) 1.1 INITIAL V = 3.3V CNTL V = 2.5V IN V = 1.8V OUT 1.0 0.9 0.8 01 2 3 OUTPUT CURRENT (A) Dropout Voltage (Input Supply) 0.50 V = 3.3V CNTL INITIAL V = 2.5V IN 0.40 V = 1.8V OUT 0.30 0.20 0.10 0.00 01 23 OUTPUT CURRENT (A) © 2011 Semtech Corporation 10 www.semtech.com DROPOUT VOLTAGE (V) DROPOUT VOLTAGE (V) SC1592 POWER MANAGEMENT Typical Characteristics (Cont.) Contol Current vs. Temperature (In Shutdow n) 10000 1000 100 V = 3.3V CNTL 10 V = 2.5V IN V = 0V EN I = 10mA OUT 1 -40 -20 0 20 40 60 80 100 120 o TEMPERATURE ( C) Control Current vs Temperature (In Regulation) 100 I = 3A OUT I = 2A OUT 10 I = 1A OUT V = 3.3V CNTL V = 2.5V IN 1 -40 -20 0 20 40 60 80 100 120 o TEMPERATURE ( C) © 2011 Semtech Corporation 11 www.semtech.com CONTROL CURRENT (nA) CONTROL CURRENT (mA) SC1592 POWER MANAGEMENT Typical Characteristics (Cont.) Dropout Voltage vs. Temperature (V - V ) CNTL OUT 1500 INITIAL V = 3.3V CNTL 1400 V = 2.5V IN 1300 V = 1.8v OUT 1200 I = 3A OUT 1100 1000 900 800 700 600 500 -40 10 60 110 o TEMPERATURE ( C) Dropout Voltage vs. Temperature (V - V ) IN OUT 500 450 I = 3A OUT 400 350 300 250 200 150 V = 3.3V CNTL 100 I = 2A OUT INITIAL V = 2.5V IN 50 V = 1.8v OUT 0 -40 -20 0 20 406080 100 120 o TEMPERATURE ( C) © 2011 Semtech Corporation 12 www.semtech.com DROPOUT VOLTAGE (mV) DROPOUT VOLTAGE (mV) SC1592 POWER MANAGEMENT Typical Characteristics (Cont.) 47uF ESR vs. Iout 10 Unstable Area 1 0.1 Stable Area 0.01 0.001 0 0.5 1 1.5 2 2.5 3 OUTPUT CURRENT (A) 150uF ESR vs. Iout 10 Unstable Area 1 0.1 Stable Area 0.01 0.001 00.5 11.5 2 2.5 3 OUTPUT CURRENT (A) 330uF ESR vs. Iout 10 Unstable Area 1 0.1 Stable 0.01 Area 0.001 00.5 1 1.5 22.5 3 OUTPUT CURRENT (A) © 2011 Semtech Corporation 13 www.semtech.com ESR (Ohm) ESR (Ohm) ESR (Ohm) SC1592 POWER MANAGEMENT Evaluation Board Schematic +3.3V Vcntl +1.8V Vout CNTL OUT C1 U1 C3 2.2uF 100uF R2 SC1592 (cer) 66.5 +2.5V Vin IN SENSE R opt EN GND ILIM C2 10k 22uF R3 (cer) 53 R1 R2 100 V = (1+ )• V OUT REF R3 V = 0.8V typ. REF Evaluation Board Schematic - Bill of Material Ry efQe tRe eferencPr art Number/Valu Manufacture 11C6 12r .2uF, 16V, Ceramic, 120 Murata or simila 21C0 22r 2uF, 10V, Ceramic, 121 Murata or simila 31C2 31r 00uF, 6.3V, Ceramic, 181 Murata or simila 41R5 1 1y 00, ±5%, 080 An 51R5 2 6y 6.5, ±0.5%, 080 An 61R5 3 5y 3, ±0.5%, 080 An 71R5 opt 1y 0K, ±10%, 080 An 81U2 1S. C159 Semtech Corp © 2011 Semtech Corporation 14 www.semtech.com SC1592 POWER MANAGEMENT Evaluation Board - SOIC-8 EDP © 2011 Semtech Corporation 15 www.semtech.com SC1592 POWER MANAGEMENT Evaluation Board - TO-263-7L (DDPAK) © 2011 Semtech Corporation 16 www.semtech.com SC1592 POWER MANAGEMENT Outline Drawing - SOIC-8L EDP A D e DIMENSIONS MILLIMETERS DIM MIN NOM MAX N - A 1.35 1.75 E/2 A1 0.00 - 0.13 1.25 - 1.65 A2 E1 E - b 0.31 0.51 - c 0.17 0.25 D 4.80 4.90 5.00 12 E1 3.80 3.90 4.00 E 6.00 BSC ccc C e 1.27 BSC e/2 2X N/2 TIPS - - F 3.30 - - H 2.41 B - h 0.25 0.50 L 0.40 0.72 1.04 D L1 (1.05) aaa C N 8 - 01 0° 8° A2 A SEATING aaa 0.10 PLANE bbb 0.25 ccc C A1 0.20 bxN bbb CA-B D h (F) h EXPOSED PAD H (H) c GAUGE PLANE 0.25 L 01 (L1) DETAIL A SEE DETAIL A SIDE VIEW NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS - A- AND -B - TO BE DETERMINED AT DATUM PLANE -H - . 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 4. THE MEASUREMENT OF DIMENSION "F" DOES NOT INCLUDE EXPOSED TIE BAR. Land Pattern - SOIC-8L EDP E SOLDER D MASK DIMENSIONS DIM MILLIMETERS (5.30) C D3.50 (C) F G Z E 5.10 F2.60 G3.20 P1.27 Y X0.60 Y2.10 THERMAL VIA P Ø 0.36mm Z 7.40 X NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. THIS LAND PATTERN IS FOR REFERENCE PURPOSE ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 3. THERMAL VIAS IN THE LAND PATTERN OF THE EXPOSED PAD SHALL BE CONNECTED TO A SYSTEM GROUND PLANE. FAILURE TO DO SO MAY COMPROMISE THE THERMAL AND/OR FUNCTIONAL PERFORMANCE OF THE DEVICE. 4. REFERENCE IPC-SM-782A, SECTION 9.1, RLP NO. 300A. © 2011 Semtech Corporation 17 www.semtech.com SC1592 POWER MANAGEMENT Outline Drawing - TO-263-7L (DDPAK) A E DIMENSIONS E/2 INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM MAX 0 L1 A .160 - .190 4.06 - 4.83 A1 .000 - .010 0.00 - 0.25 - - b .020 .036 0.51 0.91 D c .015 - .029 0.38 - 0.74 - - c1 .045 .065 1.14 1.65 H - - D .326 .380 8.28 9.65 12 34 5 67 - - D1 .270 - 6.86 - - - E .380 .420 9.65 10.67 - -- - E1 .245 6.22 H .575 - .625 14.61 - 15.88 e .050 BSC 1.27 BSC - - L .070 .110 1.78 2.79 e L1 - - .066 - - 1.68 N 7 7 b X N aaa BA - - - - 0 15° 15° 01 0° - 8° 0° - 8° aaa .010 0.25 A SEATING PLANE B A1 c1 SIDE VIEW SEE DETAIL A PLATED COPPER HEAT SPREADER D1 (L1) c E1 L 01 NOTES: DETAIL A 1. CONTROLLING DIMENSIONS ARE IN INCHES (ANGLES IN DEGREES). 2. DIMENSIONS "D" AND "E" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Recommended Land Pattern - TO-263-7L (DDPAK) H DIMENSIONS DIM INCHES MILLIMETERS G .125 3.18 H .420 10.67 K.360 9.14 P.050 1.27 K X.038 0.97 Y.140 3.56 Z.625 15.88 Z G Y P X NOTES: 1. CONTROLLING DIMENSIONS ARE IN INCHES (ANGLES IN DEGREES). 2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. © 2011 Semtech Corporation 18 www.semtech.com SC1592 POWER MANAGEMENT © Semtech 2011 All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. Semtech assumes no responsibility or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specifi ed maximum ratings or operation outside the specified range. SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFESUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its offi cers, employees, subsidiaries, affi liates, and distributors harmless against all claims, costs damages and attorney fees which could arise. Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. Contact Information Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2011 Semtech Corporation 19 www.semtech.com