SIP4610ADT-T1-E3

SiP4610A/B Vishay Siliconix Protected 1-A High-Side Load Switch APPLICATIONS • Peripheral Ports • Hot Swap • Notebook Computers • PDAs FEATURES • • • • • • • 1 A Continuous Output Current 2.4 V to 5.5 V Supply Voltage Range User Settable Current Limit Level Low Quiescent Current Undervoltage Lockout Thermal Shutdown Protection Compatible with AAT4610A • 4 kV ESD Rating-HBM RoHS COMPLIANT DESCRIPTION SiP4610A/B is a protected highside power switch. It is designed to operate from voltages ranging from 2.4 V to 5.5 V and handle a continuous current of 1 A. The user settable current limit protects the input supply voltage from excessive load currents that might cause a system failure. SiP4610A/B has a low quiescent current of 9 µA and in shutdown the supply current is reduced to less than 1 µA. In addition to current limit, the SiP4610A/B is protected by undervoltage lockout and thermal shutdown. There are two versions of the SiP4610. The SiP4610A has an active low enable input, while the SiP4610B has an active high enable input. The SiP4610A/B is available in a lead (Pb)-free 5-pin thin SOT-23 package for operation over the industrial temperature range of - 40 to 85 °C. TYPICAL APPLICATION DIAGRAM 2.4 to 5.5 V CIN Enable IN OUT COUT Load SiP4610A/B ON/ON GND RSET SET GND GND Document Number: 73233 S-71061–Rev. J, 21-May-07 www.vishay.com 1 SiP4610A/B Vishay Siliconix ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND = 0 V) Parameter VIN, VON, VON IMAX Storage Temperature Operating Junction Temperature Power Dissipationa, SOT-23 5-Pin Thermal Impedance (ΘJA) , SOT-23 5-Pin b Limit - 0.3 to 6 2 - 65 to 150 - 40 to 150 305 180 Unit V A °C °C mW °C/W Notes: a. Derate 5.5 mW/°C above TA = 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 IN Operating Temperature Range Limit 2.4 to 5.5 - 40 to 85 Unit V °C SPECIFICATIONSa Test Conditions Unless Specified Parameter Power Supplies Supply Voltage Quiescent Current Shutdown Current Switch Off Current Enable Inputs ON/ON High ON/ON Low ON/ON Leakage Current Turn Off Time Turn On Time Output On-Resistance Current Limit Minimum Current Limit Current Limit Response Time Undervoltage Lockout UVLO Threshold UVLO Hysteresis Thermal Shutdown Thermal Shutdown Threshold Hysteresis T THYST 20 165 °C VUVLO VHYST Rising Edge 1.8 0.05 2.4 V rDS IL IL(min) tRESP IN = 5 V IN = 5 V, TA = 25 °C IN = 3 V, TA = 25 °C RSET = 6.8 kΩ 0.75 145 190 1 130 4 180 230 1.25 mΩ A mA µs VIH VIL ILH tOFF tON IN = 2.4 V to 5.5 V ON/ON = 5 V IN = 5 V, RL = 10 Ω 11 65 2.0 0.8 1 21 200 µA µs V VIN IQ ISD IS(off) IN = 5 V, ON/ON = Active, lOUT = 0 A IN = 5 V, ON/ON = Inactive IN = 5 V, ON/ON = Inactive, VOUT = 0 V 2.4 9 5.5 25 1 1 µA V Symbol IN = 5 V, TA = - 40 to 85 °C Mina Limits Typb Maxa Unit Notes: a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum ( - 40 to 85 °C). b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. c. Guaranteed by design. www.vishay.com 2 Document Number: 73233 S-71061–Rev. J, 21-May-07 SiP4610A/B Vishay Siliconix PIN CONFIGURATION, ORDERING INFORMATION, AND TRUTH TABLE Thin SOT-23, 5-Pin OUT 1 5 IN GND 2 SET 3 4 ON/ON Top View ORDERING INFORMATION Parameter SiP4610ADT-T1-E3 SiP4610BDT-T1-E3 XX = Lot Code W = Work week Code Eval Kit SiP4610DT Marking M1WXX M2WXX Temperature Range - 40 to 85 °C Package Thin SOT23-5 Temperature Range - 40 to 85 °C Board Type PIN DESCRIPTION Pin Number 1 2 3 4 5 Name OUT GND SET ON/ON IN Function Switch Output. Ground pin. Current limit level set pin. The level is determinied by the value of a resistor connected from this pin to GND. Shutdown pin. ON, active low on the SiP4610A and ON, active high on the SiP4610B. Input supply voltage and switch input. FUNCTIONAL BLOCK DIAGRAM nW/L IN _ + OUT W/L Under Voltage Lockout Thermal Shutdown + _ ON (SiP4610A) ON (SiP4610B) Reference Voltage SET GND Figure 1. SiP4610 Block Diagram Document Number: 73233 S-71061–Rev. J, 21-May-07 www.vishay.com 3 SiP4610A/B Vishay Siliconix DETAILED DESCRIPTION The SiP4610 limits load current by sampling the pass transistor current and passing that through an external resistor, RSET. The voltage across RSET, VSET, is then compared with an internal reference voltage, VREF. In the event that load current surpasses the set limit current, VSET will exceed VREF causing the pass transistor gate voltage to increase, thereby reducing the gate to source voltage of the PMOS switch and regulating its current back down to ILIMIT. VIN - VOUT will cause the chip to dissipate more heat. The power dissipation for the SiP4610 can be expressed as P = ILOAD x (VIN - VOUT) Once this exceeds the maximum power dissipation of the package, the die temperature will rise. When the die temperature exceeds an over-temperature limit of 165 °C, the SiP4610 will shut down until it has cooled down to 145 °C, before starting up again. As can be seen in the figure below, the SiP4610 will continue to cycle on and off until the load is reduced or the part is turned off (See Figure 2). The maximum power dissipation in any application is dependant on the maximum junction temperature, TJ(MAX) = 125 °C, the junction-to-ambient thermal resistance for the SOT23-5 package, θJ-A = 180 °C/W, and the ambient temperature, TA, which may be formulaically expressed as: Setting the Current Limit Level Setting the current limit level on the SiP4610 requires some care to ensure the maximum current required by the load will not trigger the current limit circuitry. The minimum current limit threshold should be determined by taking the maximum current required by the load, ILOAD, and adding 25 % headroom. The SiP4610 has a current limit tolerance of 25 %, which is largely a result of process variations from part to part, and also temperature and VIN/VOUT variances. Thus, to ensure that the actual current limit is never below the desired current limit a 1/0.75 = 1.33 coefficient needs to be added to the calculations. Knowing the maximum load current required, the value of RSET is calculated as follows. RSET = RSET coefficient/ILIMIT where ILIMIT = (ILOAD x 1.33) x 1.25 and RSET coefficient is 7100 for a 1 A current limit. For typical RSET coefficient values given a limit current refer to the "Typical Characteristics" section. T (max) − T A P (max) = J θ J −A = 125 − TA 180 It then follows that assuming an ambient temperature of 70 °C, the maximum power dissipation will be limited to about 305 mW. Reverse Voltage The SiP4610 is designed to control current flowing from IN to OUT. If the voltage on OUT is raised higher than IN current will flow from OUT to IN but the current limit function will not be available, as can be inferred from the block diagram in Figure 1. Thus, in applications were OUT is used to charge IN, careful considerations must be taken to limit current through the device and protect it from becoming damaged. Operation at Current Limit and Thermal Shutdown In the event that a load higher than ILIMIT is demanded of the SiP4610, the load current will stay fixed at the current limit established by RSET. However, since the required current is not supplied, the voltage at OUT will drop. The increase in Figure 2. Current Over load Condition. Load Switch turned on with 0.1 Ω load at time = 0 ms. www.vishay.com 4 Document Number: 73233 S-71061–Rev. J, 21-May-07 SiP4610A/B Vishay Siliconix TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 20 20 16 Quiescent Current (µA) Quiescent Current (µA) 16 12 12 8 8 4 4 0 - 40 0 - 20 0 20 40 60 80 100 120 0 1 2 3 4 5 6 VIN – Input Voltage (V) Temperature (°C) Quiescent Current vs. Temperature 1000 900 800 Output Current (A) 700 rDS(on) (mΩ) 600 500 400 300 200 100 0 0 1 2 3 4 5 0 0 50 RSET = 16.2 kΩ 150 200 250 Quiescent Current vs. Input Voltage VIN = 3 V VIN = 5 V 100 20 40 60 80 100 120 VOUT - Output Voltage (V) Temperature (°C) Output Current vs. VOUT 1 10 1 0.1 Off Supply Current (µA) Off Switch Current (µA) 0.1 rDS(on) vs. Temperature 0.01 0.01 0.001 0.001 0.0001 0.0001 0.00001 - 40 - 20 0 20 40 60 80 100 120 0.00001 - 40 - 20 0 20 40 60 80 100 120 Temperature (°C) Temperature (°C) Off Supply Current vs. Temperature Off Switch Current vs. Temperature Document Number: 73233 S-71061–Rev. J, 21-May-07 www.vishay.com 5 SiP4610A/B Vishay Siliconix TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 120 15 100 Turn-On Time (µS) VIN = 3 V Turn-Off Time (µS 13 VIN = 5 V 11 VIN = 3 V 9 80 VIN = 5 V 60 40 20 7 0 - 40 - 20 0 20 40 60 80 100 5 - 40 - 20 0 20 40 60 80 100 Temperature (°C) Temperature (°C) Turn-On vs. Temperature RL = 10 Ω , CL = 0.47 µF 2.0 100 Turn-Off vs. Temperature RL = 10 Ω , CL = 0.47 µF 1.5 RSET (kΩ ) VON (v) 1.0 10 0.5 0.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 1 0.1 1 ILIMIT (A) 10 VIN – Input Voltage (V) VIH vs. VIL vs. VIN 9 4 3 RSET ILIMIT Product (kΩ) 2 Current Limit (%) 8 1 0 -1 -2 -3 6 0.00 -4 - 50 RSET vs. ILIMIT RSET = 22.1 k VIN – VOUT = 0.5 V 7 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 - 25 0 25 50 75 100 125 ILIMIT (A) Temperature (°C) RSET Coefficient vs. ILIMIT Current Limit vs. Temperature www.vishay.com 6 Document Number: 73233 S-71061–Rev. J, 21-May-07 SiP4610A/B Vishay Siliconix TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 250 VOUT = 5 V 200 200 250 VOUT = 5 V I(VOUT to VIN ) = 1 A Rds (mΩ) 100 Rds (mΩ) 150 150 100 50 50 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0 - 40 - 20 0 20 40 60 80 100 Current (A) Temperature (°C) Rds (VOUT to VIN) vs. Current Rds (VOUT to VIN) vs. Temperature TYPICAL WAVEFORMS ON 2 V/div ON, 2 V/div OUT 2 V/div RL = 10 Ω CL = 0.47 µF 10 µs/div RL = 10 Ω CL = 0.47 µF 10 µs/div OUT, 2 V/div Turn On Turn Off VIN 2 V/div VIN 2 V/div VOUT 2 V/div 2 V/div VOUT lout 2 A/div 2 µs/div 2 µs/div lout 2 A/div Short Circuit through 0.3 Ω, Vin = 3.3 V Short Circuit through 0.3 Ω, Vin = 5 V 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 http://www.vishay.com/ppg?73233. Document Number: 73233 S-71061–Rev. J, 21-May-07 www.vishay.com 7 Package Information Vishay Siliconix THIN SOT-23 : 5- AND 6-LEAD (POWER IC ONLY) e1 e1 5 4 6 5 4 E1 E E1 E 1 2 3 −B− 1 2 3 − B− e b 0.15 M CB A e b 0.15 M C B A SOT23-5L Format −A− SOT23-6L Format 4xq1 0.17 Ref D C R A2 A R Seating Plane Q 4xq1 L (L1) L 2 Gauge Plane Seating Plane 0.08 C −C− A1 MILLIMETERS Dim A A1 A2 b c D E E1 e e1 L L1 L2 R Q Q1 Min 0.91 0.01 0.90 0.30 0.10 2.90 2.70 1.525 1.80 0.30 INCHES Min 0.036 0.0004 0.035 0.012 0.004 0.114 0.106 0.060 0.070 0.012 Nom 1.00 0.05 0.95 0.32 0.15 3.05 2.85 1.65 0.95 BSC 1.90 0.40 0.60 REF 0.25 BSC Max 1.10 0.10 1.00 0.45 0.20 3.10 2.98 1.70 2.00 0.60 Nom 0.039 0.002 0.037 0.013 0.006 0.120 0.112 0.065 0.0374 BSC 0.075 0.016 0.024 REF 0.010 BSC Max 0.043 0.004 0.039 0.018 0.008 0.122 0.117 0.067 0.080 0.024 0.10 0_ 4_ − 4_ 10_ NOM − 8_ 12_ 0.004 0_ 4_ − 4_ 10_ NOM − 8_ 12_ ECN: S-40083—Rev. A, 02-Feb-04 DWG: 5926 Document Number: 72821 29-Jan-04 www.vishay.com 1 Legal Disclaimer Notice 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. 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