ACT513 Rev 2, 24-Feb-14 ActiveQRTM Quasi-Resonant PWM Controller ACT513 integrates comprehensive protection. In case of over temperature, over voltage, winding short, current sense resistor short, open loop and overload conditions, it would enter into auto restart mode including Cycle-by-Cycle current limiting. FEATURES • CCM and Quasi-Resonant Operation • Adjustable up to 45kHz Switching Frequency • OCP/OLP Protection • Integrated Patented Frequency Foldback ACT513 is to achieve no overshoot and very short rise time even with a big capacitive load with the built-in fast and soft start process. Technique • Integrated Patented Line Compensation • Built-in Soft-Start Circuit • Line Under-Voltage, Thermal, Output OverCurrent Sense Resistor Short Protection In full load condition, ACT513 is able to be designed to work in both CCM mode and DCM mode to meet different types of applications. QuasiResonant (QR) operation mode can improve efficiency during DCM operation, and reduce EMI and further reduce the components in input filter. Transformer Winding Short Protection ACT513 is ideal for applications up to 60 Watts. 100mW Standby Power Figure 1: Complies with Global Energy Efficiency and CEC Average Efficiency Standards Simplified Application Circuit voltage, Output Short Protections • • • • • Tiny SOT23-6 Packages APPLICATIONS • AC/DC Adaptors/Chargers for Cell Phones, Cordless Phone, PDAs, E-books • Adaptors for Portable Media Player, DSCs, Set-top boxes, DVD players, records • Linear Adapter Replacements GENERAL DESCRIPTION The ACT513 is a high performance peak current mode PWM controller. ACT513 applies ActiveQRTM and frequency foldback technique to reduce EMI and improve efficiency. ACT513’s maximum design switching frequency is set at 45kHz. Very low standby power, good dynamic response and accurate voltage regulation is achieved with an opto-coupler and the secondary side control circuit. The idle mode operation enables low standby power of 100mW with small output voltage ripple. By applying frequency foldback and ActiveQRTM technology, ACT513 increases the average system efficiency compared to conventional solutions and exceeds the latest ES2.0 efficiency standard with good margin. Innovative PowerTM -1- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 ORDERING INFORMATION PART NUMBER TEMPERATURE RANGE PACKAGE PINS PACKING METHOD ACT513US-T -40°C to 85°C SOT23-6 6 TUBE & REEL TOP MARK FSIT PIN CONFIGURATION SOT23-6 ACT513US PIN DESCRIPTIONS PIN NAME DESCRIPTION 1 CS 2 GND Ground. 3 GATE Gate Drive. Gate driver for the external MOSFET transistor. 4 VDD Power Supply. This pin provides bias power for the IC during startup and steady state operation. 5 VDET Valley Detector Pin. Connect this pin to a resistor divider network from the auxiliary winding to detect zero-crossing points for valley turn on operation. 6 FB Current Sense Pin. Connect an external resistor (RCS) between this pin and ground to set peak current limit for the primary switch. Feedback Pin. Connect this pin to optocouplers’s collector for output regulation. Innovative PowerTM -2- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 ABSOLUTE MAXIMUM RATINGSc PARAMETER VALUE UNIT FB, CS, VDET to GND -0.3 to + 6 V VDD, GATE to GND -0.3 to + 28 V 0.45 W -40 to 150 ˚C 220 ˚C/W -55 to 150 ˚C 300 ˚C Maximum Power Dissipation (SOT23-6) Operating Junction Temperature Junction to Ambient Thermal Resistance (θJA) Storage Temperature Lead Temperature (Soldering, 10 sec) c: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods. ELECTRICAL CHARACTERISTICS (VDD = 14V, LM = 4mH, RCS = 1.27Ω, VOUT = 12V, NP = 122, NS =14, NA =15, TA = 25°C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Supply VDD Turn-On Voltage VDDON VDD Rising from 0V 11.5 12.5 13.5 V VDD Turn-Off Voltage VDDOFF VDD Falling after Turn-on 6.7 7.4 8.1 V VDD Over Voltage Protection VDDOVP VDD Rising from 0V 25 VDD = 10V, before VDD Turn-on 8 Start Up Supply Current IDDST IDD Supply Current IDD V 13 µA VDD = 15V, after VDD Turn-on ,FB floating 0.6 mA IDD Supply Current at Standby IDDSTBY FB = 1.3V 0.4 mA IDD Supply Current at Fault IDDFAULT Fault mode, FB Floating 250 µA Feedback FB Pull up Resistor RFB 15 kΩ CS to FB Gain ACS 3 V/V 3 + VBE V VFB at Max Peak Current FB Threshold to Stop Switching VFBBM1 1.35 V FB Threshold to Start Switching VFBBM2 1.51 V 4.2 V 320 ms Output Overload Threshold OverLoad/Over Voltage Blanking Time TOVBLANK Innovative PowerTM -3- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 ELECTRICAL CHARACTERISTICS CONT’D (VDD = 14V, LM = 4mH, RCS = 1.27Ω, VOUT = 12V, NP = 122, NS = 14, NA = 15, TA = 25°C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT VCSLIM 0.91 0.974 1.03 V TCSBLANK 300 400 500 ns Current Limit CS Current Limit Threshold Leading Edge Blanking Time GATE DRIVE Gate Rise Time TRISE VDD = 10V, CL = 1nF 200 300 ns Gate Falling Time TFALL VDD = 10V, CL = 1nF 115 200 ns Gate Low Level ON-Resistance RONLO ISINK = 30mA 7 Ω Gate High Level ON-Resistance RONHI ISOURCE = 30mA 40 Ω GATE = 25V, before VDD turn-on Gate Leakage Current 1 µA Oscillator Maximum Switching Frequency fMAX Switching Frequency Foldback fMIN 45 kHz fMAX/3 kHz 75 % 100 mV 3.5 µs 1 µA 6 µs CS Short Detection Threshold 0.112 V CS Open Threshold Voltage 1.73 V Abnormal OCP Blanking Time 150 ns Thermal Shutdown Temperature 135 ˚C Maximum Duty Cycle FB = 2.3V+VBE DMAX 65 Valley Detection ZCD Threshold Voltage VDETTH After valley detection time window, if no valley detected, forcedly turn-on main switch Valley Detection Time Window VDET Leakage Current Protection CS Short Waiting Time Line UVLO IVDETUVLO 0.1 mA Line OVP IVDETOVP 2 mA VDET Over Voltage Protection VDETVOOVP 2.72 V VDET Vo Short Threshold VDETVOshort 0.58 V Innovative PowerTM -4- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 FUNCTIONAL BLOCK DIAGRAM Innovative PowerTM -5- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 FUNCTIONAL DESCRIPTION switching. After it stops, as a result of a feedback reaction, the feedback voltage increases. When the feedback voltage reaches VFBBM2, ACT513 start switching again. Feedback voltage drops again and output voltage starts to bounds back and forward with very small output ripple. ACT513 leaves idle mode when load is added strong enough to pull feedback voltage exceed VFBBM2. ACT513 is a high performance peak current mode low-voltage PWM controller IC. The controller includes the most advance features that are required in the adaptor applications up to 60 Watt. Unique fast startup, frequency foldback, QR switching technique, accurate peak current line compensation, idle mode, short winding protection, OCP, OTP, OVP and UVLO are included in the controller. Figure 2: Idle Mode Startup Startup current of ACT513 is designed to be very low so that VDD could be charged to VDDON threshold level and device starts up quickly. A large value startup resistor can therefore be used to minimize the power loss yet reliable startup in application. For a typical AC/DC adaptor with universal input range design, two 1MΩ, 1/8 W startup resistors could be used together with a VDD capacitor(4.7uF) to provide a fast startup and yet low power dissipation design solution. During startup period, the IC begins to operate with minimum Ippk to minimize the switching stresses for the main switch, output diode and transformers. And then, the IC operates at maximum power output to achieve fast rise time. After this, VOUT reaches about 90% VOUT , the IC operates with a ‘soft-landing’ mode(decrease Ippk) to avoid output overshoot. Vo 12V Io 2A 0A Vfb Vfb_olp Vfb_fl Vfbbm2 Vfbbm1 Ip Ilim Ip_FL t Primary Inductor Current Limit Compensation vs Line The ACT513 integrates a primary inductor peak current limit compensation circuit to achieve constant OLP over wide line. Constant Voltage (CV) Mode Operation Frequency Foldback In constant voltage operation, the ACT513 regulates its output voltage through secondary side control circuit . The output voltage information is sensed at FB pin through OPTO coupling. The error signal at FB pin is amplified through TL431 and OPTO circuit. When the secondary output voltage is above regulation, the error amplifier output voltage decreases to reduce the switch current. When the secondary output voltage is below regulation, the error amplifier output voltage increases to ramp up the switch current to bring the secondary output back to regulation. The output regulation voltage is determined by the following relationship: When the load drops to 75% of full load level, ACT513 starts to reduce the switching frequency, which is proportional to the load current ,to improve the efficiency of the converter. VOUTCV R = VREF _ TL 431 × (1 + F 1 ) RF 2 ACT513’s load adaptive switching frequency enables applications to meet all latest green energy standards. The actual minimum average switching frequency is programmable with output capacitance, feedback circuit and dummy load (while still meeting standby power). Valley Switching ACT513 employed valley switching from no load to heavy load to reduce switching loss and EMI. In discontinuous mode operation, the resonant voltage between inductance and parasitic capacitance on MOSFET source pin is coupled by auxiliary winding and reflected on VDET pin through feedback network R5, R6. Internally, the VDET pin is connected to an zero-crossing detector to generate the switch turn on signal when the conditions are met. (1) where RF1 (R15) and RF2 (R16) are top and bottom feedback resistor of the TL431. No Load Idle Mode In no load standby mode, the feedback voltage falls below VFBBM2 and reaches VFBBM1, ACT513 stop Innovative PowerTM -6- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 FUNCTIONAL DESCRIPTION CONT’D Figure 3: Valley Switching V Vdrain_gnd DC voltage Possible Valley turn on Ton t T Protection Features The ACT513 provides full protection functions. The following table summarizes all protection functions. Auto-Restart Operation ACT513 will enter into auto-restart mode when a fault is identified. There is a startup phase in the auto-restart mode. After this startup phase the conditions are checked whether the failure is still present. Normal operation proceeds once the failure mode is removed. Otherwise, new startup phase will be initiated again. To reduce the power loss during fault mode, the startup delay control is implemented. The startup delay time increases over lines. PROTECTION FUNCTIONS FAILURE CONDITION PROTECTION MODE VDD Over Voltage VDD > 25V (4 duty cycle) Auto Restart VVDET Over Voltage/No Voltage VVD > 2.72V or No switching for 4 cycles Auto Restart Over Temperature T > 135˚C Auto Restart Short Winding/ Short Diode Over Load/Open Loop Output Short Circuit VDD Under Voltage VCS > 1.72V Auto Restart IPK = ILIMIT or VFB = 3.5V + VBE for 320ms Auto Restart VDET < 0.58V Auto Restart VDD < 7.4V Auto Restart Innovative PowerTM -7- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 TYPICAL APPLICATION line frequency, tC is the estimated rectifier conduction time, CIN is empirically selected to be 82µF electrolytic capacitors. Design Example The design example below gives the procedure for 12V/2A flyback converter using ACT513. Refer to application circuit Figure 4, the design for an adapter application starts with the following specification: Input Voltage Range To get minimum primary peak current for saving system efficiency, the maximum duty cycle is set to be 50% at low line voltage 90VAC and the circuit efficiency is estimated to be 88%. Then in CCM the primary to secondary turn ratio NP/NS: 90VAC - 265VAC, 50/60Hz Output Power, PO 24W Np Output Voltage, VOUTCV 12V Ns Full Load Current, IOUTFL 2A 0 . 5 × 105 = = 8 . 75 ( 1 − 0 . 5 ) × 12 OCP Current, IOUTMAX 2.3-2.6A System Efficiency CV, η 0.88,DOE2.0 VINDC = _ MIN = _ MIN 2 × VIN ( MAX ) AC 2 × ( 265 V AC ) = 375 V × VIN _ min _ max _ max ) × Vo (4) Po Iedc = η × Vin _ min × Dmax (5) 12 × 2 = 0 .52 A = 105 × 0.88 × 0.5 To get deeply CCM operation, set k=Ippk_start/ Ippk=0.57 in low line, then Ippk is: 2 × I edc 1+ k 2 × 0 . 52 = = 0 . 662 A 1 + 0 . 57 I ppk = (6) The primary inductance is: Lp = Vindc × Duty (1 − k ) × I ppk × fsw (7) 105 × 0.5 = = 4 mH (1 − 0.57 ) × 0.662 × 45000 ER28 core is selected for the transformer. The core minimum Ae is 0.82cm^2. The minimum turn of the primary winding is: Np ≥ = Lp × ΔI ppk × 10 8 (8) ΔBmax × Aemin ( gaus × cm 2 ) 0.004 × (1 − k ) × 0.662 × 10 = 116T 1200 × 0.82 8 VDD voltage is set to 13V, base on the data we can get primary, secondly and auxiliary turns: N A Vdd + Vd _ aux 13 + 0.7 = = = 1 .1 Ns Vo + Vd _ sec 12 + 0.45 (2) 1 2 × 24 × ( - 3 . 5 ms ) 2 2 47 × 2 × 90 ≈105 V 0 . 88 × 82 μ F VIN ( MAX ) DC = = 2 2VINAC DCCM ( 1 − DCCM We set all CCM operation at full load in all line, the low line primary average current is: The operation for the circuit shown in Figure 4 is as follows: the rectifier bridge D1−D4 and the capacitor C1 convert the AC line voltage to DC bus voltage. This voltage supplies the primary winding of the transformer T1 and the startup circuit of R7/R8 and C4 to VDD pin of ACT513. The primary power current path is formed by the transformer’s primary winding, Q1, and the current sense resistor R9. The resistors R3, R2, diode D5 and capacitor C3 create a snubber clamping network that protects Q1 from damage due to high voltage spike during Q1’s turn off. The network consisting of capacitor C4, diode D6 and resistor R4 provides a VDD supply voltage for ACT513 from the auxiliary winding of the transformer. The resistor R4 is optional, which filters out spikes and noise to makes VDD more stable. C4 is the decoupling capacitor of the supply voltage and energy storage component for startup. During power startup, the current charges C4 through startup resistor R7/R8 from the rectified bus voltage. The diode D8 and the capacitor C5/L2/C6 rectify filter the output voltage. The resistor divider consists of R15 and R16 programs the output voltage. Since a bridge rectifier and bulk input capacitors are used, the resulting minimum and maximum DC input voltages can be calculated: 1 2 POUT ( - tC ) 2 fL η × C IN = (9) So base on the result, we can get the turn ratios. N p = 122 T , N s = 14 T , N a = 15 T (10) (3) Where ŋ is the estimated circuit efficiency, fL is the Innovative PowerTM -8- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 TYPICAL APPLICATION CONT’D high current ground returns, the input capacitor ground lead, and the ACT513 GND pin to a single point (star ground configuration). Determining the value of the current sense resistor (R7) uses the maximum current in the design. So the input primary maximum current at maximum load: I p _ OCP = = 2 2 × Lp × fsw × Pin + Vin2 _ min × Dmax 2 × LP × fsw × Vin _ min × Dmax 12 × 2 × 2.6 + 105 2 × 0.5 2 0.88 = 0.82 A 2 × 4 × 45 × 105 × 0.5 (11) 2 × 4 × 45 × Since the ACT513 internal current limit is set to 0.96V, the design of the current sense resistor is given by: RCS = VCS 0 . 96 = ≈ 1 .27 Ω I p _ OCP 0 . 82 (12) The voltage feedback resistors are selected according to the design. Because the line UVLO is 70VDC, the upper feedback resistor is given by: RFB _ UP = VINDC _ UVLO × = NA N p × IFB _ UVLO 70 × 14 ≈ 54 .9 kΩ 122 × 0.15 mA (13) The lower feedback resistor is selected as: RFB _ LOW = VFB (VOUT + VD ) NA - VFB NS RFB _ UP (14) 2.2 = × 54.9 kΩ ≈ 11.7 kΩ (12 + 0.45 ) × 1.1 - 2.2 When selecting the output capacitor, a low ESR electrolytic capacitor is recommended to minimize ripple from the current ripple. The approximate equation for the output capacitance value is given by: COUT = IOUT 2 = = 889μF fsw × VRIPPLE 45k × 50mV (15) Three 470µF electrolytic capacitors are used to further reduce the output ripple. PCB Layout Guideline Good PCB layout is critical to have optimal performance. Decoupling capacitor (C4) and feedback resistor (R5/R6) should be placed close to VDD and FB pin respectively. There are two main power path loops. One is formed by C1/C2, primary winding, mosfet transistor and current sense resistor (R9). The other is secondary winding, rectifier D8 and output capacitors (C5/C6). Keep these loop areas as small as possible. Connecting Innovative PowerTM -9- Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 Figure 4: Universal VAC Input, 12V/2A Output Adaptor Innovative PowerTM - 10 - Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 Table 1: ACT513 12V24W Bill of Materials ITEM REFERENCE DESCRIPTION QTY MANUFACTURER 1 U1 IC, ACT513, SOT23-6 1 Active-Semi 2 C1 Capacitor, Electrolytic, 82µF/400V, 18 × 20mm 1 Rubcon 3 C3 Capacitor, Ceramic,1000pF/1KV,DIP 1 POE 4 C4 Capacitor, Electrolytic,4.7µF/35V,5*11mm 1 KSC 5 C5,C6,C7 Capacitor, Solid, 470µF/16V, 8*16mm 3 Rubcon 6 C8 Capacitor, Ceramic, 0.1µF/50V,0805,SMD 1 POE 7 C9 Capacitor, Ceramic,1000pF/100V,0805,SMD 1 POE 8 Cfb Capacitor, Ceramic,100pF/50V,0805,SMD 1 POE 9 BD1 GBL10 2A/600V 4Pin DIP 1 Good-Ark 10 D5 Diode, Ultra Fast, FR107,1000V/1.0A, DO-41 1 Good-Ark 11 D6 RS1M SMD 1 Good-Ark 12 D8 Diode, Schottky, 60V/30A, SBR3060, DO-220 1 Diodes 13 Dgate Diode L4148 SMD 1 Good-Ark 14 LF1 CM Inductor, 50mH, UU10.5 1 SoKa 15 LF2 Axial Inductor, 0.75*5T, 5*7,Dip 200uH 1 SoKa 16 Q1 Mosfet Transisor, 04N65, TO-220F 1 Infineon 17 PCB1 PCB, L*W*T =49x68x1.6mm, Cem-1, Rev:A 1 Jintong 18 F1 Fusible, 2A/250V 1 TY-OHM 19 R1 Chip Resistor,22 Ω, SMD 0805, 5% 1 TY-OHM 20 R2 metal Resistor,100K Ω,DIP,1W,5% 1 TY-OHM 21 R3 Chip Resistor, 100Ω, 0805, 5% 1 TY-OHM 22 R4 Chip Resistor,4.7Ω, 0805, 5% 1 TY-OHM 23 R5 Chip Resistor,54.9kΩ, 0805, 1% 1 TY-OHM 24 R6 Chip Resistor, 11.8KΩ, 0805, 1% 1 TY-OHM 25 R7,R8 Chip Resistor, 1MΩ, 5% 2 TY-OHM 26 R9 metal Resistor, 1.27Ω, 1W, 1% 1 TY-OHM 27 R10 Chip Resistor, 510Ω, 1/4W, 5% 1 TY-OHM 28 R12,R14 Chip Resistor, 3.3KΩ, 0805, 5% 2 TY-OHM 29 R13 Chip Resistor, 10Ω, 0805, 5% 1 TY-OHM 30 R15 Chip Resistor,24.3kΩ, 0805,1% 1 TY-OHM 31 R16 Chip Resistor,6.19KΩ, 0805, 1% 1 TY-OHM 32 Rgate Chip Resistor,330Ω, 0805, 5% 1 TY-OHM 33 T1 ER28 Lm=4mH 1 34 CX1 X capacitance, 0.1µF/400V,X1 1 35 NTC Thermistor, SC053 1 TY-OHM 36 TVS Varistor, 10471 1 TY-OHM 37 CY1 Y capacitance, 1000pF/400V,Y1 1 SEC 38 U2 Opto-coupler, PC817C CTR=200 dip-4 1 Sharp 39 U3 Voltage Regulator, TL431A, Vref=2.5V TO-92 1 ST Innovative PowerTM - 11 - Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 TYPICAL PERFORMANCE CHARACTERISTICS Startup Supply Current vs. Temperature VDD ON/OFF Voltage vs. Temperature VDDON and VDDOFF (V) 11.5 Startup Supply Current (µA) VDDON 12.5 10.5 9.5 8.5 VDDOFF 7.5 9 8 7 6 0 40 80 120 0 20 80 100 Supply Current at Idle/Fault Mode vs. Temperature Maximum Switching Frequency vs. Temperature Idle Mode 0.4 0.3 Fault Mode 0 20 40 60 80 100 120 120 ACT513-004 ACT513-003 0.5 0.2 60 50 40 0 20 Temperature (°C) 40 60 80 100 120 Temperature (°C) VFB Threshold Voltage vs. Temperature VCS Voltage vs. Temperature VFB Threshold Voltage (V) 0.9 0.8 0.7 ACT513-006 5 ACT513-005 1.0 VCS Voltage (V) 60 Temperature (°C) 0.6 0.6 0 40 Temperature (°C) Maximum Switching Frequency (KHz) 6.5 Supply Current (mA) ACT513-002 10 ACT513-001 13.5 4 OLP 3 Start Switching 2 1 Stop Switching 0 20 40 60 80 100 0 120 20 Temperature (°C) Innovative PowerTM 60 80 100 120 Temperature (°C) - 12 - Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. 40 www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT513 Rev 2, 24-Feb-14 PACKAGE OUTLINE SOT23-6 PACKAGE OUTLINE AND DIMENSIONS Active-Semi, Inc. reserves the right to modify the circuitry or specifications without notice. Users should evaluate each product to make sure that it is suitable for their applications. Active-Semi products are not intended or authorized for use as critical components in life-support devices or systems. Active-Semi, Inc. does not assume any liability arising out of the use of any product or circuit described in this datasheet, nor does it convey any patent license. Active-Semi and its logo are trademarks of Active-Semi, Inc. For more information on this and other products, contact [email protected] or visit http://www.active-semi.com. is a registered trademark of Active-Semi. Innovative PowerTM - 13 - Active-Semi Proprietary―For Authorized Recipients and Customers ActiveQRTM is a trademark of Active-Semi. www.active-semi.com Copyright © 2014 Active-Semi, Inc.