BTS3205N Infineon Technologies, BTS3205N Datasheet
BTS3205N
Specifications of BTS3205N
BTS3205NINTR
SP000438116
Available stocks
Related parts for BTS3205N
BTS3205N Summary of contents
Page 1
...
Page 2
... Output On-State Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5.1.4 Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5.1.5 Output Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5.1.6 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6.1 Thermal Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6.2 Overvoltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6.3 Short Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6.4 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7 Package Outlines BTS3205N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Data Sheet Smart Low-Side Power Switch 2 BTS3205N Rev. 1.0, 2008-09-25 ...
Page 3
... Green Product (RoHS compliant) • AEC Qualified Description The BTS3205N is a one channel low-side power switch in PG-SOT-223-4 package providing embedded protective functions. The device is monolithic integrated and consist of an N-channel power MOSFET transistor and additional protection circuitry. Table 1 Product Summary ...
Page 4
... The temperature information is given by a temperature sensor in the power MOSFET. During thermal shutdown the device tries to sink an increased input current to feedback the fault condition. The BTS3205N has a thermal-auto-restart function, the device will turn on again after the measured temperature has dropped down for the thermal hysteresis. ...
Page 5
... GND Figure 2 Terms Data Sheet Over- Over- voltage temperature Protection Protection Overload detection and Current limiter BTS3205N Source Smart Low-Side Power Switch BTS3205N Block DiagramTerms BlockDiagram _3205N.emf Drain V D Terms .emf Rev. 1.0, 2008-09-25 Drain Source ...
Page 6
... Pin Configuration PG-SOT-223-4 3.2 Pin Definitions and Functions Pin Symbol Function 1 IN Input / fault feedback 2, 4 Drain Load connection 3 Source Ground connection Data Sheet Pin ConfigurationPin Assignment BTS3205N DRAIN (TAB DRAIN SOURCE 6 Smart Low-Side Power Switch BTS3205N Pin_SOT 223.emf Rev. 1.0, 2008-09-25 ...
Page 7
... Symbol Limit Values Unit Min. Max. V – -0 self limited – 600 – – – 0.78 tot T +150 °C - +150 °C -55 stg ESD 7 Smart Low-Side Power Switch BTS3205N Test Conditions – -0.2 V < < < -0 > ° 350 mA °C J(start 250 mA 150 °C J(start 200 mA ...
Page 8
... Typical Transient Thermal Impedance single pulse, Data Sheet General Product CharacteristicsThermal Resistance Symbol Limit Values Min. Typ. R – – thJC R – 63 thJA - Smart Low-Side Power Switch BTS3205N Unit Conditions Max K – K/W Z thJA Z thJC Zth_3205 N.emf Z Z and thJA thJC Rev. 1.0, 2008-09-25 ...
Page 9
... Device mounted on PCB according EIA/JEDEC standard JESD51-7 (4-layer FR4, 76.2 mm × 114.3 mm with buried planes). PCB is mounted vertical without blown air with 0.78W power dissipation generated for single pulse on the DMOS Data Sheet General Product CharacteristicsThermal Resistance - [ with different Duty cycles thJA = 25 ° Smart Low-Side Power Switch BTS3205N pulse_BTS3205 N.emf Rev. 1.0, 2008-09-25 ...
Page 10
... Input Circuit Figure 6 shows the input circuit of the BTS3205N. The zener Diode protects the input circuit against ESD pulses. The internal circuitry is supplied by the input PIN. During normal operation the Input is connected to the Gate of the power MOSFET. During fault condition the device tries to sink the current information back to the driving circuit ...
Page 11
... Failure Feedback During failure condition the BTS3205N tries to sink a increased input current 5.1.3 Output On-State Resistance The on-state resistance depends on the junction temperature R on-state resistance . DS(on) Figure 9 Typical On-State Resistance, Data Sheet Block Description and CharacteristicsInput and Power Stage T . Figure 9 ...
Page 12
... Block Description and CharacteristicsInput and Power Stage Figure 10 is calculated by R =63 K/W thJA - 100 T / °C Figure 11 t off 12 Smart Low-Side Power Switch BTS3205N R R and . thJC thJA R =42 K/W thJC 125 150 Ptot_3205N.emf shows the timing definition Switching.emf Rev. 1.0, 2008-09-25 ...
Page 13
... INTH 0.8 – – R – 0.9 – DS(on) – 1.8 2.4 – 0.7 – – 1.4 1.9 I 350 550 – Dnom I – – 5 DSS – 2.5 6 – BTS3205N Unit Test Conditions µ µ 150 ° µ 25° µA, 150 °C ...
Page 14
... Smart Low-Side Power Switch Block Description and CharacteristicsInput and Power Stage Symbol Limit Values Min. Typ. Max. t – – 15 off – 2 – 6.0 ds off V – -1 and . thJA DS(on) 14 BTS3205N Unit Test Conditions µ 90 µ 10 9.3 V/µs 50 Ω 18.2 V/µs 30 Ω ...
Page 15
... Thermal Protection The device is protected against over temperature due to overload and / or bad cooling conditions. To ensure this a temperature sensor located in the Power MOSFET is used. The BTS3205N has a thermal auto-restart function. After the device has cooled down it will switch on again see Figure 12. ...
Page 16
... lamp V bb Figure 14 Switching an Inductance While demagnetization of inductive loads, energy has to be dissipated in the BTS3205N. This energy can be calculated with following equation: V out ⋅ ------------------------ bb out Following equation simplifies under assumption of V ⋅ ------------------------------------- - – out Data Sheet ...
Page 17
... IN lim Figure 15 Short Circuit Behavior of BTS3205N As the device is a low side switch it can be assumed that the Source to Ground path has a neglectable low impedance and resistance. Therefore all impedance and resistance in the load path during short circuit is merged into Zsc. Data Sheet ...
Page 18
... T 1) °C 150 175 – JSD ∆ T – 10 – K JSD V 42 – Clamp I 0.6 0.9 1.2 A lim 0.3 – – – – 1.4 t µs – – 50 dlim 18 BTS3205N Test Conditions – mA × t measure dlim ° 150 ° -40 ° Rev. 1.0, 2008-09-25 ...
Page 19
... Package Outlines BTS3205N A 0.7 ±0.1 0. Figure 16 PG-SOT-223-4 (Small Outline Transistor) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). ...
Page 20
... Revision History Version Date Changes Rev. 1.0 2008-09-25 released data sheet Data Sheet Smart Low-Side Power Switch 20 BTS3205N Revision History Rev. 1.0, 2008-09-25 ...
Page 21
... Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life ...