APL3546A Power -Distribution Switches with Soft Start Features General Description • • The APL3546A is a power-distribution switch with some protection functions. The device incorporates a 78mΩ N- 78mΩ High Side MOSFET Soft Start Time Programmable by External channel MOSFET power switch that is controlled by an enable logic pin and has a SS pin dedicated to soft start Capacitor • • • • • • Wide Supply Voltage Range: 4.5V to 24V ramp-up rate control that can be used in application where the inrush current is concerned. Current Limit Protections Under Voltage Lockout Protection Over-temperature Protection The device integrates some protection features, including current limit protection, over-temperature protection, Logic Level Enable Input Lead Free and Green Devices Available (RoHS UVLO and current limit setting. The current limit protection can protect down-stream devices from catastrophic Compliant) • Current Limit setting failure by limiting the output current at current limit threshold during over-load or short circuit events. The over-temperature protection function shuts down IC when the junction temperature rises beyond 150oC. The UVLO function Applications • • • • keeps the power switch in off state until there is a valid input voltage present. The current limit can be set by con- TFT LCD Modules necting resistor from the current limit adjustable pin ISET to ground. Notebook and Desktop Computers USB Ports High-side Power Protection Switches Simplified Application Circuit APL 3546A VIN VOUT SS ISET EN GND ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 1 www.anpec.com.tw APL3546A Pin Configuration APL3546A VIN SS GND NC 1 2 3 4 9 GND APL3546A 8 7 6 5 VOUT ISET EN NC VOUT VIN 1 6 SS 2 5 ISET GND 3 4 EN TDFN2x2-6 (Top View) SOP-8P Top Ordering and Marking Information APL3546A Package Code KA : SOP-8P QB : TDFN2x2-6 Operating Ambient Temperature Range I : -40 to 80oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device Assembly Material Handling Code Temperature Range Package Code APL3546A KA: . APL3546A XXXXX APL3546A QB: XXXXX - Date Code . 46A X X - Date Code Note : ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant)and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight). Absolute Maximum Ratings (Note 1) Symbol Rating Unit VIN to GND Voltage -0.3 ~ 26 V VOUT VOUT to GND Voltage -0.3 ~ 26 V VEN EN to GND Voltage -0.3 ~ 7 V VISET ISET to GND Voltage -0.3 ~ 7 V VSS SS to GND Voltage -0.3 ~ 7 V IOUT IOUT output current Setting by RISET VIN TJ TSTG TSDR Parameter Maximum Junction Temperature Storage Temperature Maximum Lead Soldering Temperature (10 Seconds) A -40 ~ 150 o -65 ~ 150 o 260 o C C C Note1: 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 under "recommended operating conditions" is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 2 www.anpec.com.tw APL3546A Thermal Characteristics (Note 2) Symbol θJA Parameter Typical Value Unit Junction-to-Ambient Resistance in Free Air SOP-8P TDFN2x2-6 o 75 130 C/W Note 2: θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. Recommended Operating Conditions (Note 3) Symbol VIN Parameter VIN Input Voltage CSS SS Pin Soft-Start Capacitor TA Ambient Temperature TJ IOUT continuous current. IOUT IOUT output current Unit 4.5 ~ 24 V VIN Input Voltage=4.5V ~ 7V 3.3n ~ 10n VIN Input Voltage=7V ~ 24V 1n ~ 10n Junction Temperature IOUT Range F -40 ~ 85 o -40 ~ 125 o C C 2.5 A See Output Current vs. VIN Input Voltage curve A Note 3: Refer to the typical application circuit Electrical Characteristics Unless otherwise specified, these specifications apply over VIN=12V, VEN =5V. Typical values are at TA=25oC. Symbol Parameter APL3546A Test Conditions Unit Min. Typ. Max. No load, VEN=0V - 30 50 µA No load, VEN=5V - 250 400 µA VOUT=GND , VEN=0V - - 1 µA IOUT=2A, TA= 25 oC ,VIN=12V - 78 90 mΩ IOUT=2A, VIN=12V - 78 100 mΩ 3.3 - 3.9 V - 0.2 - V SUPPLY CURRENT VIN Supply Current Leakage Current POWER SWITCH RDS(ON) Power Switch On Resistance UNDER-VOLTAGE LOCKOUT VIN UVLO Threshold Voltage VIN UVLO Hysteresis CURRENT LIMIT AND SHORT CIRCUIT PROTECTIONS VISET ILIM Current Limit Voltage Current Limit Threshold VIN=4.5V to 24V - 0.6 - V RISET=82kΩ - 6.2 - A VIN=12V, 1 2 3 µA VIN=12V, No load, COUT=1uF, CSS =1nF - 0.5 - ms VIN=12V, No load, COUT=1uF, CSS =open 1 2 3 ms VEN=0V - 300 - Ω SOFT-START CONTROL PIN ISS tSS SS Current Soft-Start Time Soft-Star Discharge Resistance Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 3 www.anpec.com.tw APL3546A Electrical Characteristics(Cont.) Unless otherwise specified, these specifications apply over VIN=12V, VEN =5V. Typical values are at TA=25oC. Symbol Parameter APL3546A Test Conditions Unit Min. Typ. Max. 2 - - V 0.6 V µA EN INPUT PIN VIH VIL Input Logic High VIN=4.5V to 24V Input Logic Low VIN=4.5V to 24V Input Current - - - - 1 - 950 - Ω tD(ON) Turn on Delay Time - 300 - µs tD(OFF) Turn off Delay Time - 3 - µs - 150 - °C VOUT Discharge Resistance VEN=0V OVERT-TEMPERATURE PROTECTION (OTP) TOTP Over-Temperature Threshold TJ rising Pin Description FUNCTION NO. NAME SOP-8P TDFN2x2-6 1 1 VIN Power Supply Input. Connect this pin to external DC supply. 2 2 SS Soft Start Control Pin. Connect a capacitor to GND to control the soft start rate. If the SS pin is left floating the soft start time is 2ms when VIN=12V. 3,9 3 GND 4 - NC 5 - NC No connection. Enable Input. Pull this pin to high to enable the device and pull this pin to low to disable device. The EN pin cannot be left floating. GND. No connection. 6 4 EN 7 5 ISET Connect a resistor to GND to adjust OCP level. 8 6 VOUT Output Voltage Pin. The output voltage follows the input voltage. When EN is low the output voltage is discharged by an internal resistor. Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 4 www.anpec.com.tw APL3546A Typical Operating Characteristics 6.24 450 6.22 400 6.20 VIN Supply Current(uA) Current Limit Threshold(A) Current Limit Threshold vs. VIN Input Voltage 6.18 6.16 6.14 6.12 6.10 6.08 350 VEN=5V 300 250 200 150 100 VEN=0V 50 6.06 6.04 0 5 10 15 20 5 25 10 15 25 VIN Input Voltage(V) EN Input Voltage vs. VIN Input Voltage ISET resistor vs. Current Limit Threshold 12 Input Logic High V IN =12V, TA =25°C Current Limit Threshold(A) 1.50 1.45 1.40 1.35 Input Logic Low 1.30 1.25 10 1.20 5 10 15 20 8 6 4 2 0 25 0 100 200 VIN Input Voltage(V) 300 400 500 600 ISET Resistor(kΩ) Power Switch On Resistance vs. VIN Input Voltage 91.0 7 90 .5 6 Output Current vs. VIN Input Voltage Current Limit Output Current(A) Power Switch On Resistance(mΩ) 20 VIN Input Voltage(V) 1.55 EN Input Voltage(V) VIN Supply Current vs. VIN Input Voltage 90.0 89.5 89.0 88.5 CSS=1nF 5 CSS=10nF 4 3 2 VEN = 5V RISET = 82k TA = 25°C 1 88.0 0 5 10 15 20 0 25 VIN Input Voltage(V) Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 5 10 15 20 25 VIN Input Voltage(V) 5 www.anpec.com.tw APL3546A Operating Waveforms Power Off Power On VIN VOUT VIN 1 1 VOUT 3 IIN 2 2 IIN 3 VIN=12V, CIN=1uF, COUT=10uF, ROUT=30Ω VIN=12V, CIN=1uF, COUT=10uF, ROUT=30Ω CH1: VIN (5V/Div) CH2: VOUT (5V/Div) CH3: IIN (0.5A/Div) Time: 4ms/Div CH1: VIN (5V/Div) CH2: VOUT (5V/Div) CH3: IIN (0.5A/Div) Time: 400ms/Div Turn Off Response Turn On Response EN 1 2 3 VOUT EN 1 VOUT 2 IIN 3 VIN=12V, CIN=1uF, COUT=10uF, ROUT=30Ω CH1: EN (2V/Div) CH2: VOUT (5V/Div) CH3: IIN (0.5A/Div) Time: 400us/Div VIN=12V, CIN=1uF, COUT=10uF, ROUT=30Ω CH1: EN (2V/Div) CH2: VOUT (5V/Div) CH3: IIN (0.5A/Div) Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 IIN 6 www.anpec.com.tw APL3546A Operating Waveforms Soft Start Ramp Up Control Short Circuit Response EN VIN Css=open Css=1nF VOUT Css=1.5nF 1 1 2 2 IOUT Css=5.6nF 3 VIN=12V, CIN=1uF, COUT =10uF, ROUT =30Ω CH1: EN (2V/Div) CH2: VOUT (5V/Div) Time: 400us/Div Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 VIN=12V, CIN=1uF, COUT=10uF, RISET=82kΩ CH1: VIN (5V/Div) CH2: VOUT (5V/Div) CH3: IOUT (5A/Div) Time: 10us/Div 7 www.anpec.com.tw APL3546A Block Diagram ISET VOUT VIN UVLO Charge Pump Current Limit Gate Driver and Control Logic EN Soft Start SS GND OTP Typical Application Circuit APL3546A VIN VIN VOUT VOUT 1uF 10uF VIN 1nF SS ISET RISET (OPTION) EN Controller (OPTION) Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 GND (OPTION) 8 www.anpec.com.tw APL3546A Function Description Under-voltage Lockout (UVLO) Enable/Disable The APL3546A power switch is built-in an under-voltage Pull the EN below 0.6V to disable the device and pull EN above 2V to enable the device. When the IC is disabled lockout circuit to keep the output shut off until internal circuitry is operating properly. The UVLO circuit has hys- the supply current is reduced to less than 35µA. The enable input is compatible with both TTL and CMOS logic teresis and a de-glitch feature so that it will typically ignore undershoot transients on the input. When input volt- levels. The EN pin cannot be left floating. age exceeds the UVLO threshold, the output voltage starts a soft-start to reduce the inrush current. Over-temperature Protection When the junction temperature exceeds 150oC, the internal thermal sense circuit turns off the power FET and Power Switch The power switch is an N-channel MOSFET with a low allows the device to cool down. When over temperature protection occur, IC latch off. Thermal protection is de- RDS(ON). The internal power MOSFET does not have the body diode. When IC is off, the MOSFET prevents a signed to protect the IC in the event of over temperature conditions. For normal operation, the junction tempera- current flowing from the VOUT back to VIN and VIN to VOUT. ture cannot exceed TJ=+125oC. Current Limit Protection The APL3546A power switch provides the current limit protection function. When current limit occur, IC latch off. For reliable operation, the device should not be operated in current limit for extended period time. Soft-Start The APL3546A provides an adjustable soft-start circuitry to control rise rate of the output voltage and limit the current surge during start-up. The soft-start ramp-up rate is controlled by a capacitor from SS pin to ground. the soft start time can be calculated by this following equation: tss= 0.1( CSSx VIN )/ ISS where, tSS is soft start time of VOUT rising from 0 to 100%, of which unit is second. CSS is the value of the capacitor connected from SS pin to GND, of which unit is micro-Farad. VIN is the amplitude of input voltage applied to this device, of which unit is volt. ISS is the SS pin charge current, typical value is 2µA. If the CSS is not connected or tied to VIN, the soft start time is 2ms when VIN=12V. Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 9 www.anpec.com.tw APL3546A Application Information Power Sequencing Layout Consideration The PCB layout should be carefully performed to maxi- VIN mize thermal dissipation and to minimize voltage drop, droop and EMI. The following guidelines must be EN threshold considered: 1. Please place the input capacitors near the VIN pin as EN At start-up, it is necessary to ensure that the VIN and EN are sequenced correctly. Input Capacitor A 1µF ceramic bypass capacitor from VIN to GND, located near the APL3546A, is strongly recommended to suppress the ringing during short-circuit fault event. Without the bypass capacitor, the output short may cause sufficient ringing on the input (from supply lead inductance) to damage internal control circuitry. close as possible. 2. Output decoupling capacitors for load must be placed near the load as close as possible for decoupling high frequency ripples. 3. Locate APL3546A and output capacitors near the load to reduce parasitic resistance and inductance for excellent load transient performance. 4. The negative pins of the input and output capacitors and the GND pin must be connected to the ground plane of the load. 5. Keep VIN and VOUT traces as wide and short as possible. Output Capacitor Current Limit Setting A low-ESR 10µF MLCC, aluminum electrolytic or tanta- The current limit can be set by connecting resistor from the current limit adjustable pin ISET to ground. The re- lum between VOUT and GND is strongly recommended to reduce the voltage droop during hot-attachment of downstream peripheral. Higher-value output capacitor is better when the output load is heavy. Additionally, bypassing the output with a 0.1µF ceramic capacitor improves the immunity of the device to short-circuit transients. quired value of resistor RISET for current limit is calcuated as follows: RISET = 510000 / ILIM Soft-Start Capacitor The APL3546A has a built-in adjustable soft-start control for user to set an optimum soft-start time for the application. The soft-start time can be calculated by the equation, described in the paragraph of Soft-Start in Functional Description section. The soft-start time will become internally controlled as if there is no CSS, tSS=2ms when VIN=12V. Please note that there minimum value of soft start capacitor in different VIN input voltage. Please make sure the CSS is in the recommended value. Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 10 www.anpec.com.tw APL3546A Package Information SOP-8P D SEE VIEW A h X 45o E THERMAL PAD E1 E2 D1 c A1 0.25 A2 A b e GAUGE PLANE SEATING PLANE θ L VIEW A S Y M B O L SOP-8P MILLIMETERS MIN. INCHES MAX. A MIN. MAX. 1.60 0.063 0.000 0.15 0.006 A1 0.00 A2 1.25 b 0.31 0.51 0.012 0.020 c 0.17 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 0.049 D1 2.50 3.50 0.098 0.138 E 5.80 6.20 0.228 0.244 E1 3.80 4.00 0.150 0.157 E2 2.00 3.00 0.079 0.118 e 1.27 BSC 0.050 BSC h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 0o C 8oC 0 0oC 8o C Note : 1. Followed from JEDEC MS-012 BA. 2. Dimension "D" does not include mold flash, protrusions or gate burrs. Mold flash, protrusion or gate burrs shall not exceed 6 mil per side . 3. Dimension "E" does not include inter-lead flash or protrusions. Inter-lead flash and protrusions shall not exceed 10 mil per side. Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 11 www.anpec.com.tw APL3546A Package Information TDFN2x2-6 A b E D D2 A1 A3 L K E2 Pin 1 Corner e TDFN2x2-6 S Y M B O L MIN. MAX. A 0.70 A1 0.00 MILLIMETERS A3 INCHES MIN. MAX. 0.80 0.028 0.031 0.05 0.000 0.002 0.20 REF 0.008 REF 0.30 0.007 0.012 1.90 2.10 0.075 0.083 D2 1.00 1.60 0.039 0.063 E 1.90 2.10 0.075 0.083 E2 0.60 1.00 0.024 0.039 b D 0.18 e 0.65 BSC L 0.30 K 0.20 0.026 BSC 0.012 0.45 0.018 0.008 Note : 1. Followed from JEDEC MO-229 WCCC. Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 12 www.anpec.com.tw APL3546A Carrier Tape & Reel Dimensions P0 P2 P1 A B0 W F E1 OD0 K0 A0 A OD1 B B T SECTION A-A SECTION B-B H A d T1 Application A H 330.0±2.00 50 MIN. P0 P1 T1 12.4+2.00 -0.00 P2 4.0±0.10 8.0±0.10 2.0±0.05 A H T1 C 13.0+0.50 -0.20 D0 1.5+0.10 -0.00 C 178.0±2.00 50 MIN. 8.4+2.00 -0.00 P0 P1 SOP-8P Application TDFN2x2-6 4.0±0.10 4.0±0.10 d D 1.5 MIN. 20.2 MIN. D1 A0 B0 K0 6.55±0.20 5.25±0.20 2.10±0.20 d T 0.6+0.00 -0.40 D W E1 F 13.0+0.50 -0.20 1.5 MIN. 20.2 MIN. 8.0±0.20 1.75±0.10 3.5±0.05 P2 D0 D1 T A0 B0 K0 2.0±0.05 1.5+0.10 -0.00 1.5 MIN. 0.6+0.00 -0.40 2.35±0.20 2.35±0.20 1.00±0.20 1.5 MIN. W E1 12.0±0.30 1.75±0.10 F 5.5±0.05 (mm) Devices Per Unit Package Type Unit Quantity SOP-8P Tape & Reel 2500 TDFN2x2-6 Tape & Reel 3000 Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 13 www.anpec.com.tw APL3546A Taping Direction Information SOP-8P USER DIRECTION OF FEED TDFN2x2-6 USER DIRECTION OF FEED Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 14 www.anpec.com.tw APL3546A Classification Profile Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 15 www.anpec.com.tw APL3546A Classification Reflow Profiles Profile Feature Sn-Pb Eutectic Assembly Pb-Free Assembly 100 °C 150 °C 60-120 seconds 150 °C 200 °C 60-120 seconds 3 °C/second max. 3°C/second max. 183 °C 60-150 seconds 217 °C 60-150 seconds See Classification Temp in table 1 See Classification Temp in table 2 Time (tP)** within 5°C of the specified classification temperature (Tc) 20** seconds 30** seconds Average ramp-down rate (Tp to Tsmax) 6 °C/second max. 6 °C/second max. 6 minutes max. 8 minutes max. Preheat & Soak Temperature min (Tsmin) Temperature max (Tsmax) Time (Tsmin to Tsmax) (ts) Average ramp-up rate (Tsmax to TP) Liquidous temperature (TL) Time at liquidous (tL) Peak package body Temperature (Tp)* Time 25°C to peak temperature * Tolerance for peak profile Temperature (Tp) is defined as a supplier minimum and a user maximum. ** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum. Table 1. SnPb Eutectic Process – Classification Temperatures (Tc) Package Thickness <2.5 mm ≥2.5 mm Volume mm <350 235 °C 220 °C 3 Volume mm ≥350 220 °C 220 °C 3 Table 2. Pb-free Process – Classification Temperatures (Tc) Package Thickness <1.6 mm 1.6 mm – 2.5 mm ≥2.5 mm Volume mm <350 260 °C 260 °C 250 °C 3 Volume mm 350-2000 260 °C 250 °C 245 °C 3 Volume mm >2000 260 °C 245 °C 245 °C 3 Reliability Test Program Test item SOLDERABILITY HOLT PCT TCT HBM MM Latch-Up Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 Method JESD-22, B102 JESD-22, A108 JESD-22, A102 JESD-22, A104 MIL-STD-883-3015.7 JESD-22, A115 JESD 78 16 Description 5 Sec, 245°C 1000 Hrs, Bias @ Tj=125°C 168 Hrs, 100%RH, 2atm, 121°C 500 Cycles, -65°C~150°C VHBM≧2KV VMM≧200V 10ms, 1tr≧100mA www.anpec.com.tw APL3546A Customer Service Anpec Electronics Corp. Head Office : No.6, Dusing 1st Road, SBIP, Hsin-Chu, Taiwan, R.O.C. Tel : 886-3-5642000 Fax : 886-3-5642050 Taipei Branch : 2F, No. 11, Lane 218, Sec 2 Jhongsing Rd., Sindian City, Taipei County 23146, Taiwan Tel : 886-2-2910-3838 Fax : 886-2-2917-3838 Copyright ANPEC Electronics Corp. Rev. A.3 - Jul., 2013 17 www.anpec.com.tw