TS13401

TS13401 SEMTECH | Alldatasheet

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Features

Final Datasheet Rev 1.0 July 21, 2017 2 of 19 Semtech Proprietary & Confidential Pin Description Pin Symbol Pin # Function Description SUB 1 IC Substrate Connection Connect substrate capacit or from SUB to SYSM SYSP 2 Positive System Voltage Power is harvested from the SW pins SYSM 3 Negative System Voltage Power is harvested from the SW pins VDD 4 Bias Voltage Output Connect VDD Capacitor to SYSM PTO 5 Power Transfer Output Connect to Power Transf er Capacitor C PTO CLK 6 Clock Input Galvanically Isolated Clock Input DATA 7 Data Output Galvanically Isolated Data Output AD2 8 Address Select 2 For logic 0, must be tied to SRC on PCB For logic 1, must be tied to VGG5 on PCB AD1 9 Address Select 1 For logic 0, must be tied to SRC on PCB For logic 1, must be tied to VGG5 on PCB N/C 10 No Connect AD0 11 Address Select 0 For logic 0, must be tied to SRC on PCB For logic 1, must be tied to VGG5 on PCB WD 12 Watch Dog Control input for latching vs non-lat ching switch SRC 13 Source Bulk connection of switch, connect to VGG5, VGG10 capacitors VGG5 14 Bias Voltage Output Connect VGG5 Capacitor to SR C VGG10 15 Bias Voltage Output Connect VGG10 Capacitor to S RC SW2 16 Switch Output Node 2 GATE2 17 Gate 2 Connect to gate of switch between SRC and SW2 SRC 18 Source Connect to source of external switches GATE1 19 Gate 1 Connect to gate of switch between S RC and SW1 SW1 20 Switch Output Node 1 SUB PAD Thermal Input Connect thermally to the FET chip

Final Datasheet Rev 1.0 July 21, 2017 3 of 19 Semtech Proprietary & Confidential Functional Block Diagram Figure 1: TS13401 Block Diagram Absolute Maximum Ratings Over operating free–air temperature range unless ot herwise noted (1, 4) Parameter Range Unit SW1, SW2 (2) -1 to 60 V SYSP, SYSM, PTO (3) -1 to 60 V CLK , DATA, VDD, AD2, AD1, AD0, WD (3) -0.3 to 5.5 V VGG5 (2) -0.3 to 5.5 V GATE1, GATE2, VGG10 (2) -0.3 to 11 V SUB (2) -55 to 0.3 V Operating Junction Temperature Range, T J -40 to 125 °C Storage Temperature Range, T STG -65 to 150 °C Electrostatic Discharge – Human Body Model ±2k V Electrostatic Discharge – Charged Device Model +/-500 V Peak IR Reflow Temperature (10 to 30 seconds) 260 °C Notes: (1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only and function al operation of the device at these or any other condi tions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability. (2) Voltage values are with respect to SRC terminal. (3) Voltage values are with respect to SYSM terminal. (4) ESD testing is performed according to the respective JESD22 JEDEC standard.

Final Datasheet Rev 1.0 July 21, 2017 4 of 19 Semtech Proprietary & Confidential Thermal Characteristics Symbol Parameter Value Unit θJC Thermal Resistance Junction to Case (1) 50 °C/W TSTG Storage Temperature Range -65 to 150 °C TJ MAX Maximum Junction Temperature 150 °C TJ Operating Junction Temperature Range -40 to 125 °C Notes: (1) Case Temperature is measured in the center of the case at the bottom of the package adjacent to the circuit board. Recommended Operating Conditions Symbol Parameter Min Typ Max Unit VSW AC Switch Voltage 24 36 V RMS CDATA Data Isolation Capacitor 100 pF CISO Clock Isolation Capacitor 220 pF CPTO Power Transfer Capacitor 10 nF CVDD VDD Capacitor 470 nF CVGG5 VGG5 Capacitor 470 nF CVGG10 VGG10 Capacitor 470 nF CSUB Sub Capacitor 100 nF CWD Watch Dog Timer Capacitor 22 nF RWD Watch Dog Timer Resistor 100k 1M Ω CSYS VSYS Capacitor 2 μF RSYSP SYSP Resistor 100 Ω RSYSM SYSM Resistor 100 Ω VCLK Clock Drive Voltage 1.7 5.5 V TCLK Clock Period 0.8 1 1.2 μs TBIT Bit Period 7 8 10 μs TRESET Reset Time 18 μs

Final Datasheet Rev 1.0 July 21, 2017 5 of 19 Semtech Proprietary & Confidential

Electrical Characteristics

Electrical Characteristics, T J = -40°C to 125°C (unless otherwise noted) Symbol Parameter Condition Min Typ Max Unit Supply Voltages ISYSP System Supply Current Latch Mode 15 20 μA ISYSP_CONV System Supply Current- Converting Switch on, sensing enabled, converting 2 mA VDD VDD Bias Output Voltage With respect to SYSM 4.5 5 .0 5.5 V VGG5 VGG5 Bias Output Voltage With respect to SRC 4.5 5 .0 5.5 V VGG10 VGG10 Bias Output Voltage With respect to SRC 9 10 11 V I/O Parameters VDATAH DATA Output High Voltage Drop 2.5V < V DD < 5.5V; I OH = -4mA VDATAH = V DD - VDATA 0.7 1.3 V VDATAL DATA Output Low Voltage 2.5V < V DD < 5.5V; IOH = 4mA VDATAL = V DATA - VSYSM 0.1 0.2 V IDATAZ DATA Output Off-State Leakage 2.5V < V DD < 5.5V 0V < V DATA < V DD -1 8 μA IIL Input Low-level Leakage Current AD0, AD1, AD2 Inputs; VINPUT = V SRC CLK Input; VINPUT = V SYSM -1 1 μA IIH Input High-level Leakage Current AD0, AD1, AD2 Inp uts; VINPUT = V GG5 -1 1 μA IIH_CLK CLK Input High-level Leakage Current CLK Input; V INPUT = V DD -1 15 μA Current Sense |IRANGE | Current Sense Full-Scale Range 0.25 V IRANGE-TC Current Sense Channel TC 1.5625 mV |IRANGE-IR | Current Sense Full-Scale Range Inrush Mode 0.5 V IRANGE-IR-TC Current Sense Channel TC Inrush Mode 3.125 mV Temperature Sense TRANGE Temperature Sense Full-Scale Range Note: Accuracy not guaranteed above T J = 127°C (Not tested in production) -40 155 °C TCODE Temperature Channel Gain (1) 1 °C Code Voltage Sense |V RANGE | System Voltage Sense Full-Scale Range 60 63.5 67 V VCODE Voltage Sense Channel Gain 0.472 0.5 0.528 V Code Data Converter NBITS ADC Reported Resolution Reported Resolution via Se rial Interface 8 Bits NERR ADC Total Error Total linearity, zero and full-scale errors. F CLK = 1MHz 1 LSB tCONV ADC Conversion Time F CLK = 1MHz 10 μs Communication THB Heartbeat Pulse Width 24 μs Dither TDOFF Dither Off Period 38 μs TDRTY Dither Retry Interval 5.2 ms VDITHER_ON Dither On Threshold V SYSP -VSYSM 18.5 V VDITHER_OFF Dither Off Threshold V SYSP -VSYSM 19.5 V

Final Datasheet Rev 1.0 July 21, 2017 6 of 19 Semtech Proprietary & Confidential Symbol Parameter Condition Min Typ Max Unit Output Switch ISWX SW1/2 Leakage V SYS = 42V; V SWX = 0, 42V; V SYSM = 0V -3 3 μA IOUT OC-00 Output Over Current Shutdown SWx Threshold T J=25°C, OC_SET = 00, Measured as V SWX 220 mV IOUT OC-01 Output Over Current Shutdown SWx Threshold T J=25°C, OC_SET = 01, Measured as V SWX 350 mV IOUT OC-10 Output Over Current Shutdown SWx Threshold T J=25°C, OC_SET = 10, Measured as V SWX 460 mV IOUT OC-11 Output Over Current Shutdown SWx Threshold T J=25°C, OC_SET = 11, Measured as V SWX 580 mV IOUT IR-00 Output Inrush Current Shutdown SWx Threshold T J=25°C, OC_SET = 00, Measured as V SWX 930 mV IOUT IR-01 Output Inrush Current Shutdown SWx Threshold T J=25°C, OC_SET = 01, Measured as V SWX 1050 mV IOUT IR-10 Output Inrush Current Shutdown SWx Threshold T J=25°C, OC_SET = 10, Measured as V SWX 1150 mV IOUT IR-11 Output Inrush Current Shutdown SWx Threshold T J=25°C, OC_SET = 11, Measured as V SWX 1260 mV OC FILT Output Over Current Deglitch 2.75 4 7 μs OC IR_FILT Output Inrush Current Deglitch 1 2 3 μs NIR_CYCLES Inrush Duration 4 Cycles TBLANK-OC Current Limit Blanking Time 19 25 39 μs VTURN-OFF Switch Voltage for Zero Cross Turn-Off T J = 25 ⁰C -37.5 37.5 mV VOFF-TH Zero Cross Turn-Off Voltage Threshold T J = 25 ⁰C; Switch will turn off if absolute value of voltage is below this threshold after Zero Cross Off command 12.5 25 37.5 mV VCLAMP V SWX Clamp Voltage Measured as VSW1 -VSW2 , V SW2 -VSW1 ISW = 10mA 58 65 V Watch Dog WD TO Turn-Off Threshold Switch shuts off if WD drops below this voltage 500 700 900 mV WD RC WD Recharge Voltage WD recharges to this voltage when command is received V GG5 -1.1 V GG5 -0.9 V GG5 -0.5 V Over Temperature TWARN Over Temperature Warning (1) 90 120 °C TSD Over Temperature Shutdown (1) 120 150 °C THYST Over Temperature Hysteresis (1) 20 °C TDIFF Temperature Difference Between Warning and Shutdown Thresholds (1) 30 °C Power Transfer FPTO Power Transfer Output Frequency V SYSP -VSYSM = 24V 50 80 110 kHz RHS_PTO Power Transfer High Side Driver Resistance V SYSP -VSYSM = 24V 30 55 80 Ω RLS_PTO Power Transfer Low Side Driver Resistance V SYSP -VSYSM = 24V 20 35 50 Ω Notes: (1) Not tested in production

Final Datasheet Rev 1.0 July 21, 2017 8 of 19 Semtech Proprietary & Confidential Page Selection The three bits (P2 P1 P0) in Figure 3 select the pa ge of commands to be used for the current communica tion sequence. There are two possible selections; 110 for the Command Page a nd 111 for the Configuration Page (see Table 1). Th e commands available on each page are listed in Tables 2 and 3. Table 1: Valid Pages P2 P1 P0 Page 0 0 0 Reserved 0 0 1 Reserved 0 1 0 Reserved 0 1 1 Reserved 1 0 0 Reserved 1 0 1 Reserved 1 1 0 Command Page 1 1 1 Configuration Page Device Addressing Figure 2 shows the beginning of a command sequence. This pattern appears at the CLK input and starts with a low period for duration of T RESET or greater, followed by the preamble (P2 P1 P0). The following three bits designate the address of t he device being selected. These three bits (A2 A1 A0) corres pond to the device with AD2, AD1, and AD0 pins conn ected as in the Address Configuration Table shown in Figure 8. See the Mul ti-channel Application Section for more information . Switch Commands The (C3 C2 C1 C0) field sent using the CLK pin dete rmines the command sent to the switch. Two pages ar e available; one is for issuing commands, and the other is for configuring the device. The Command page defines possible acti ons that control the various functions. The Configuration page sets the parameters that affect those functions. Table 2 s hows valid commands: Table 2: Command Page--Valid Command Sequences C3 C2 C1 C0 Command 0 0 0 0 No Operation 0 0 0 1 OFF, Immediate 0 0 1 0 OFF, Zero Crossing 0 0 1 1 ON, Immediate 0 1 0 0 ON, Zero Crossing 0 1 0 1 ON, Immediate, with Dithering 0 1 1 0 ON, Zero Crossing, with Dithering 0 1 1 1 Heartbeat 1 0 0 0 Set Power Transfer Mode 1 0 0 1 Cancel Power Transfer Mode 1 0 1 0 Set Inrush Mode 1 0 1 1 Cancel Inrush Mode 1 1 0 0 Start a load current measurement 1 1 0 1 Start a system voltage measurement 1 1 1 0 Start a switch temperature measurement 1 1 1 1 Poll State (No Operation)

Final Datasheet Rev 1.0 July 21, 2017 9 of 19 Semtech Proprietary & Confidential Table 3 defines the possible configuration sequence s. These sequences are intended to be used in the system primarily during initial setup (usually on system power-up). These commands are “sticky”, that is to say, once one is written, that corresponding configuration remains in effect until such a time a s power is removed, thereby re-setting the part. U pon reset, the configuration will return to its default state. The default conf iguration settings are shown in the table. Table 3: Configuration Page--Valid Configuration Sequences C3 C2 C1 C0 Configuration 0 0 0 0 Reserved 0 0 0 1 Set Over-Current Shutdown Set to 00 0 0 1 0 Set Over-Current Shutdown Set to 01 0 0 1 1 Set Over-Current Shutdown Set to 10 0 1 0 0 Set Over-Current Shutdown Set to 11 (defaul t) 0 1 0 1 Reserved 0 1 1 0 Reserved 0 1 1 1 Reserved 1 0 0 0 Reserved 1 0 0 1 Reserved 1 0 1 0 Reserved 1 0 1 1 Reserved 1 1 0 0 Reserved 1 1 0 1 Reserved 1 1 1 0 Reserved 1 1 1 1 Poll State (No Operation) Each device monitors the CLK line regardless of the address; however only the device with the (AD2 AD1 AD0) pins configured to match the (A2 A1 A0) field sent via the CLK pin wil l respond to the Command bits (C3 C2 C1 C0). If tw o or more devices on the CLK bus have address pins wired alike, those devices wi ll all respond to the same command. However, doing this may lead to DATA bus conflicts when the device Status Values are rep orted. The command is executed after the status values are shifted out to avoid interference on the status va lues caused by transients in the system. ON Commands Four modes of closing the switch are available: 1. ON, Immediate: When this command sequence is sent, the switch will be closed after the status values a re shifted out. The system must comprehend the time it takes to complet e the sequence in order to place the switch in the closed state at the desired time. 2. ON, Zero Crossing: When this command sequence is se nt, the switch will close on the first occurrence o f a polarity change in the voltage across the switch (V SW1 -VSW2 changes sign to indicate a voltage zero-crossing) after the switch receives the command and the status values are shifted out. Thi s should not be used for DC applications. 3. ON, Immediate with Dithering: This command closes t he switch as in ON, Immediate, above, but puts the device into Dither mode as well. Dithering opens the switch af ter an interval of T DRTY for a period of time, T DOFF when the system voltage drops below V DON . This allows the C SYS capacitor to be re-charged. See the Dither Functio nality Section for more details. 4. ON, Zero Crossing with Dithering: This command clos es the switch as in ON, Zero Crossing, but enables the Dither mode as described above. OFF Commands Two modes of opening the switch are available: 1. OFF, Immediate: When the OFF, Immediate sequence is sent, the switch will transition to the open state after the status values are shifted out. 2. OFF, Zero Crossing: When the OFF, Zero-Crossing seq uence is received, the switch will open on the firs t occurrence of the load-current dropping within I TURN_OFF after the status values are shifted out.

Final Datasheet Rev 1.0 July 21, 2017 10 of 19 Semtech Proprietary & Confidential Poll Command A Poll State command may be sent to the device when no change of operation is desired, but the state o f the Status Values is needed by the microcontroller. In non-latched oper ation, this command will also serve to recharge the Watchdog Timer. See the Latching Configuration Section for details. Sensing Modes The device has the ability to make system parametri c measurements related to the load being actuated. The parameters that can be measured are: 1. Load Current The load current can be measured by writing the com mand sequence shown in the commands table to initia te a load current measurement. Note that the load current ca n only be measured when the switch is in the “ON” s tate. The switch must be commanded to the “ON” state using any of th e supported command sequences before sending a load current measurement command. Normal Measurement For a given code value (CODE) from a load current m easurement, the current through the external switch (I SW ) with total resistance equal to R FET is: + × 2× 255 Inrush Measurement For a given code value (CODE) from a load current m easurement with Inrush Mode enabled, the current th rough the external switch (I SW ) with total resistance equal to R FET is: + × 2× 255 2. System Voltage The system voltage can be measured by writing the c ommand sequence shown in the commands table to init iate a system voltage measurement. This measures the volt age between one switch terminal tied to the supply and the other tied to the load, and depends on the load being ter minated to ground in order to make the measurement. It is also important to note that this measurement can only be made when the switch is in the “OFF” state. The s witch must be placed into that state by any of the supported comm and sequences or by an over-current event before se nding a system voltage measurement command. For a given code value (CODE) from a system voltage measurement, the voltage across SW1 and SW2 (V SW ) is: =−|" 255 % 3. Switch Temperature The switch temperature may be measured by writing t he command sequence shown in the commands table to initiate a switch temperature measurement. There are no const raints on the switch state to be able to make a tem perature measurement. For a given code value (CODE) from a temperature AD C measurement, the temperature of the device (T J) is: &' = & (() +*−128 - ×&.(/ (() = 25°

Final Datasheet Rev 1.0 July 21, 2017 11 of 19 Semtech Proprietary & Confidential When any of the above sensing modes are commanded, the information returned on the DATA pin will be am ended with the system measurement results. This will consist of e ight bits of data following the Status Values and a “0” bit. The sequence will be as follows: CLK: R Page Addr Sensing Command 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ANY ↑ Sample Param. Conv. Complete ↑ ↓ Output Data ↓ DATA: High-Z 0 S7 S6 S5 S4 S3 S2 S1 S0 0 D7 D6 D5 D4 D3 D2 D1 D0 0 High-Z Figure 4: Sensing Communication Protocol The switch depends on the CLK to make its data conv ersion, so it is required that the CLK continue to be driven until the output data is received. The requested measurement is sampled during the “0” bit at the beginning of the status bit stream. Th e converted signal is complete at the end of the “0” bit following the st atus bit stream, with the transfer of the converted data commencing afterward. For temporally-accurate measurements to be made, th e microcontroller must comprehend the delay between the start of the Reset / Preamble / Address / Command sequence and t he sampling period. The timing of the sample will be entirely dependent on the CLK timing presented to the device. Continuous Sample Mode The device supports a continuous sample mode whereb y a continuous series of samples is provided withou t having to send another command. By continuing to send a series of “1” bits on the CLK pin, the microcontroller will be provided a continuous series of converted samples of the selected type, 8 bits long, and separated by a “0” transmission. B y utilizing this feature, the microcontroller may sample waveforms and use the da ta for numerical analysis to gain insight into the health of the load, the quality of the supply voltage, compute power factor , frequency, distortion, etc. Samples following th e first conversion will be taken at the end of the D3 bit transmission of the prior sampled data. Status Values The (S7…S0) field received using the DATA pin provi des the status of the switch before the command has been executed. Each of the status bits is generated by the switch in the f ollowing way:

• For zero: the DATA pin is pulsed for first 2 clock pulses matching the protocol (the pulses correspond ing to the Zero signal).
• For one: the DATA pin duplicates the signal availab le at the CLK pin (the pulses corresponding to the One signal). The following status values are defined: Table 4: Status Bits S7 Power Transfer Mode Enabled S6 Inrush Mode Enabled S5 Dithering Enabled S4 Over Temperature Warning S3 Over-Temperature Shutdown S2 Inrush Over-Current Shutdown S1 Over-Current Shutdown S0 Switch State Data Values The DATA (D7, D6…D0) field is used to provide the a cquired value of the system parameter requested by the Command Sequence if there is data to be returned by that command. T he data will be transmitted with the MSB first. For Continuous Sample Mode, drive 9 “1” bits (D7-D0, 0) for each additional conversion desired

Final Datasheet Rev 1.0 July 21, 2017 12 of 19 Semtech Proprietary & Confidential Latching Configuration The device can be configured for latching or non-la tching functionality via external interconnect. Whe n the WD pin is tied to VGG5, the switch state is latched after each command (CMD ) sequence. When the WD pin is tied to an RC circui t, the device is configured for non-latching behavior. If a CMD sequence is not transmitted before the RC decays to WD TO , the switch will be turned off. A CMD sequence received by the device before the WD pin v oltage decays to WD TO will cause the WD pin to recharge to WD RC , and the switch will remain closed. In order to recharge, t he CMD address must be for the corresponding device address configuration. Typical waveforms for non-latching behavior are sho wn below. Figure 5: Latching Functionality The time between the last CMD sequence and the swit ch opening (in a non-latching configuration) can be computed by the following equation: / ln34 ( Where: tOFF is the time from the last CMD sequence until the s witch opens RWD is the WD pin resistor CWD is the WD pin capacitor WD TO is the WD pin turn-off voltage threshold WD RC is the WD pin re-charge voltage It should be noted that the WD capacitor, C WD , is recommended to be 22nF. The reason for this i s that charge proportional to C WD is drawn from the C SYS capacitor in every re-charge cycle, thereby elevat ing the average current, and forcing the device to switch off more frequently in order to re-charge C SYS (see Figure 8, below). C WD can be made smaller, but this will necessitate a l arger value of RWD to be used to define a given t OFF time. R WD has its practical limits due to leakage within the components attached to the WD pin and possible leakage on the circuit board due to co ntamination. The system designer should consider a ll these issues when selecting R WD and C WD . Device 2 in Figure 8 shows R WD and C WD being used to create a non-latching channel. Devi ce 1 is shown in latching mode.

Final Datasheet Rev 1.0 July 21, 2017 13 of 19 Semtech Proprietary & Confidential Heartbeat Functionality When the switch is off and the heartbeat command se quence has been transmitted, the DATA pin provides a pulse synchronous with the zero crossings of the AC waveform. A singl e pulse or “Heartbeat” for each crossing will be pr esent with a pulse width of T HB as shown in the figure below. This is useful for mo nitoring load presence and for evaluating the phase of the AC waveform. To cancel the heartbeat command, send any other valid command. If a heartbeat command is sent while the s witch is on no data will be sent back, the switch state will remain the same , and the heartbeat command will not be enacted. Figure 6: Heartbeat Functionality Power Transfer When the set power transfer mode command is sent to the device, the PTO pin will be driven from SYSP t o SYSM at frequency FPTO . The PTO pin will continue to drive a pulse train un til the cancel power transfer mode command is sent. This feature can be used to drive a charge pump to harvest power from the SW pi ns. See Figure 8 for a typical configuration. Over Temperature In the event of the device reaches temperatures exc eeding T WARN or T SD , status bits 4 or 3 respectively will be set and v isible on the DATA pin (see Table 4). There is also hysteresis T HYST built into each trip point. When T WARN is reached, functionality of the device will remain the same and this status is just for user in formation. When T SD is reached, the device will drive the switch off a nd ignore turn on commands until the temperature goes below T SD -THYST . Since the switch is external, it is important to thermally couple the PAD to the switch through the PCB layout.

Final Datasheet Rev 1.0 July 21, 2017 14 of 19 Semtech Proprietary & Confidential Inrush Support A system may present loads to the switch which resu lt in high inrush currents when initially energized , but rapidly decrease to a lower level. If the inrush level is higher than th e switch over-current shutdown, it may be impossibl e to activate the load. This device supports an inrush mode to allow the activat ion of loads with inrush currents on the order of t wice their normal operating current for a short period of time. During the inr ush period, the switch over-current shutdown is ele vated, allowing current to build in the load, ensuring actuation. After the i nrush event, the over-current threshold can be redu ced to a lower level to allow protection against faults. Figure 7 below illustrat es the time-variant peak load current and how the i nrush over-current shutdown threshold can be used to energize a load successful ly when the higher inrush current would otherwise h ave tripped the lower steady-state over-current threshold. As long as th e load current stays within the safe shaded area, t he switch will remain closed. Figure 7: Inrush Waveform Note that T IPK is internally limited to a maximum of N IR_CYCLES = 4 cycles (8 current zero-crossings). Therefore TIPK is defined as: 2∗7 8 ≤&!:; ≤ 9 2∗7 8 If it is desired to limit this period to something less, the normal over-current shutdown threshold ma y be restored by writing the command sequence to cancel inrush mode. If the dev ice is used in a DC application, note that T IPK will be infinite, so it is critical that the system controller adjusts this time as req uired so that the system is not sustained in the lo ad current inrush state indefinitely. It is recommended that the inrush pe riod be only as long as is required by the load in the system. Dither Functionality Dithering is provided as a mode of operation for ap plications where a single device per system is used . It enables powering the TS13401 from the AC waveform. The device monitors s ystem voltage and if it is below V DITHER_ON , the switch is shut off for approximately TDOFF . This causes energy stored in the inductor to be t ransferred into the C SYS capacitor. When the device is in Dither mode, this event occurs at TDRTY intervals until the system voltage reaches VDITHER_OFF . -12 -10 Load Current (A) Time (s) Load Current vs. Time TIPK Inrush Over-Current Shutdown: IOUT PK Over-Current Shutdown Threshold: IOUT OC -IOUT OC -IOUT PK Load Current Inrush Steady-State Operation

Final Datasheet Rev 1.0 July 21, 2017 15 of 19 Semtech Proprietary & Confidential Multi-channel Application In a multi-channel application, dithering is unnece ssary when the switch for at least one channel is o pen and providing power to the other channels. As long as the device address p ins are wired uniquely for each channel, a single p air of GPIO pins on the microcontroller can control each device by matching the address in the CMD sequence with the hardwired address. If all devices must be on simultaneously, one device can be config ured for dithering mode to maintain system supply. The SYSP net should be tied to the SYSM net through the C SYS capacitor as shown in Figure 8 below. For a single transformer system, only one is necessary. If additional transf ormers are used in a given system, then the SYSP an d SYSM pins for those TS13401 devices will need an additional C SYS capacitor for each additional transformer. Current limit resistors are needed for each SYSP pi n and each SYSM pin as shown below (R SYSP and R SYSM respectively). These are typically 100Ω, ¼ W. As shown below, a pair of GPIO pins can manage the command and control for up to 8 loads as long as ea ch part has a unique address. The address pins are set using hard wired connections according to the Address Configuration Table shown in Figure 8. Also note that some devices can be wired in non-lat ching mode and others in latching mode. Figure 8: System Block Diagram

Final Datasheet Rev 1.0 July 21, 2017 16 of 19 Semtech Proprietary & Confidential

Package Information

Marking for the 3 x 3mm MLPQ-UT 20 Lead package: nnnnn= Part Number (Example: 13401) yyww xxxxx xxxxx = Semtech Lot No. (Example: E9010) yyww = Date Code (Example: 1652)

Final Datasheet Rev 1.0 July 21, 2017 17 of 19 Semtech Proprietary & Confidential Package Outline Drawing 3.00 2.90 3.10 NOTES: bbb C A B aaa C 0.08 1.90 0.00 0.51 2.10 2.00 0.05 0.60 (0.153) 0.02 0.55 0.10 2.90 3.00 3.10

0.40 BSC

0.15 0.25 0.35 A COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. 2. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 1. DIMENSIONS e bbb aaa DIM N L E D A MILLIMETERS MAX MIN NOM E BD e N PIN 1 INDICATOR (LASER MARK) A C SEATING PLANE b 0.15 0.20 0.25 bxN LxN E/2 D/2 R0.20 PIN 1 1.90 2.10 2.00

Final Datasheet Rev 1.0 July 21, 2017 18 of 19 Semtech Proprietary & Confidential Board Land Pattern

Ordering Information

TS13401ULTRT MLPQ-20 3.0 x 3.0 Tape & Reel (3000 parts/reel) TS13401EVB Evaluation Board THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. NOTES: C Z P Y X G H 3.50 0.20 0.55 0.40 2.00 2.40 DIM (2.95) MILLIMETERS DIMENSIONS K 2.00 CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 1. K H Y G Z X P (C)

Final Datasheet Rev 1.0 July 21, 2017 19 of 19 Semtech Proprietary & Confidential IMPORTANT NOTICE Information relating to this product and the application or design described herein is believed to be reliable, however such information is provided as a guide only and Semtech assumes no liability for any errors in this document, or for the application or design described herein. Semtech reserves the right to make changes to the product or this document at any time without notice. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. Semtech warrants performance of its products to the specifications applicable at the time of sale, and all sales are made in accordance with Semtech’s standard terms and conditions of sale. SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHOR IZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE- SUPPORT APPLICATIONS, DEVICES OR SYSTEMS, OR IN NUCLEAR APPLICATIONS IN WHICH THE FAILURE COULD BE REASONABLY EXPECTED TO RESULT IN PERSONAL INJURY, L OSS OF LIFE OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLI CATIONS 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 officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise. The Semtech name and logo are registered trademarks of the Semtech Corporation. All other trademarks and trade names mentioned may be marks and names of Semtech o r their respective companies. Semtech reserves the right to make changes to, or discontinue any products described in this document without further notice. Semtech makes no warranty, representation or guarantee, express or implied, regarding the suitability of its products for any particular purpose. All rights reserved. © Semtech 2017 Contact Information Semtech Corporation

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