IFX21401 Low Dropout Voltage Tracking Regulator IFX21401MB Data Sheet Rev. 1.01, 2009-10-19 Standard Power Low Dropout Voltage Tracking Regulator 1 IFX21401 Overview Features • • • • • • • • • • • • • 50 mA Output Current Capability Tiny and Thermally Enhanced-Package Accurate Output Voltage Tracking Stable with Small Output Capacitor Low Dropout Voltage, 300mV Combined Reference / Enable Input Low Current Consumption in Stand-by Mode Maximum Input Voltage -42 V ≤ VI ≤ +45 V Reverse Polarity Protection Output Short Circuit to Ground and Supply Protection Overtemperature Protection Temperature Range -40 °C ≤ Tj ≤ 125 °C Green Product (RoHS compliant) PG-SCT595-5 Applications • • • • • Manufacturing Automation Appliances HDTV Televisions Game Consoles Network Routers For automotive and transportation applications, please refer to the Infineon TLE and TLF voltage regulator series. Functional Description The IFX21401 is a monolithic integrated low dropout voltage tracker in a tiny SMD package PG-SCT595-5 with excellent thermal resistance. It is designed to supply off-board loads (e.g. sensors) in harsh environments. The IC protects itself in case of overload, overtemperature, reverse polarity as well as output short circuit to battery or ground. Supply voltages up to VI = 45 V are regulated to a reference voltage applied at the adjust input “ADJ” with high accuracy. The output “Q” is able to drive loads up to 50 mA. In order to reduce the quiescent current to a minimum, the IFX21401 can be switched to stand-by mode by setting the adjust/enable input “ADJ/EN” to “low”. Type Package Marking IFX21401MB PG-SCT595-5 T1 Data Sheet 2 Rev. 1.01, 2009-10-19 IFX21401 Block Diagram 2 Block Diagram Supply IFX21401MB I CI ADJ/EN Internal Supply Saturation Control Current Limitation Q Regulated Output Voltage Temp. Protection CQ Voltage divider optional Reference off-board load ADJ/EN GND BlockDiagram. vsd Figure 1 Block Diagram and Typical Application Circuit 3 Pin Configuration 3.1 Pin Assignment ADJ/EN 1 GND 2 I 3 5 GND 4 Q Pi no ut.v s d Figure 2 Pin Configuration Package PG-SCT595-5 3.2 Pin Definitions and Functions Pin Symbol Function 1 ADJ/EN Adjust / Enable. Connect the reference to this pin. A low signal disables the IC; a high signal switches it on. The reference voltage can be connected directly or by a voltage divider for lower output voltages. For compensating line influences, a capacitor close to the IC pins is recommended. 2 GND Ground Reference. Internally connected to Pin 5. Connect to heatsink area. 3 I Input. IC supply. For compensating line influences, a capacitor close to the IC pins is recommended. 4 Q Tracker Output. Block to GND with a capacitor close to the IC terminals, respecting capacitance and ESR requirements given in the table “Functional Range”. 5 GND Ground Reference. Internally connected to Pin 2. Connect to heatsink area. Data Sheet 3 Rev. 1.01, 2009-10-19 IFX21401 General Product Characteristics 4 General Product Characteristics 4.1 Absolute Maximum Ratings Absolute Maximum Ratings 1) -40 °C ≤ Tj ≤ 150 °C; all voltages with respect to ground (unless otherwise specified). Pos. Parameter Symbol Limit Values Unit Conditions Min. Max. VI VQ VADJ/EN -42 45 V – -1 40 V – -0.3 40 V – Tj Tstg -40 150 °C – -50 150 °C – VESD,HBM VESD,CDM -3 3 kV HBM2) -2 2 kV CDM3) Voltages 4.1.1 Input voltage 4.1.2 Output voltage 4.1.3 Adjust / Enable Input Temperatures 4.1.4 Junction Temperature 4.1.5 Storage Temperature ESD Susceptibility 4.1.6 ESD Resistivity 4.1.7 1) Not subject to production test, specified by design. 2) ESD susceptibility, Human Body Model “HBM” according to EIA/JESD 22-A114B 3) ESD susceptibility, Charged Device Model “CDM” according to EIA/JESD22-C101 or ESDA STM5.3.1 Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are not designed for continuous repetitive operation. Data Sheet 4 Rev. 1.01, 2009-10-19 IFX21401 General Product Characteristics 4.2 Pos. Functional Range Parameter Symbol 4.2.1 Input Voltage 4.2.1 Adjust / Enable Input Voltage (Voltage Tracking Range) 4.2.2 Junction Temperature 4.2.3 Output Capacitor Requirements 4.2.4 Limit Values Unit Conditions Min. Max. VI VADJ/EN 4 40 V – 2.5 36 V – Tj CQ ESRCQ -40 125 °C – 1 – µF – 1) – 3 Ω – 2) 1) The minimum output capacitance requirement is applicable for a worst case capacitance tolerance of 30% 2) relevant ESR value at f = 10 kHz Note: Within the functional range the IC operates as described in the circuit description. The electrical characteristics are specified within the conditions given in the related electrical characteristics table. 4.3 Thermal Resistance Pos. Parameter Symbol 4.3.5 Junction to Ambient RthJA Limit Value Unit Conditions Min. Typ. Max. – 81 – K/W 2s2p board1) 4.3.1 – 217 – K/W Footprint only2) 4.3.2 – 117 – K/W 300 mm2 PCB heatsink area2) 4.3.3 – 103 – K/W 600 mm2 PCB heatsink area2) – 30 – K/W Pins 2, 5 fixed to TA 4.3.4 Junction to Soldering Point RthJSP 1) Specified RthJA value is according to JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The product (chip+package) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu). Where applicable a thermal via array under the package contacted the first inner copper layer. 2) Package mounted on PCB FR4; 80 x 80 x 1.5 mm; 35 µm Cu, 5 µm Sn; horizontal position; zero airflow. Not subject to production test; specified by design. Data Sheet 5 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics 5 Electrical Characteristics 5.1 Tracking Regulator The output voltage VQ is controlled by comparing it to the voltage applied at pin ADJ/EN and driving a PNP pass transistor accordingly. The control loop stability depends on the output capacitor CQ, the load current, the chip temperature and the poles/zeros introduced by the integrated circuit. To ensure stable operation, the output capacitor’s capacitance and its equivalent series resistor ESR requirements given in the table “Functional Range” have to be maintained. For details see also the typical performance graph “Output Capacitor Series Resistor ESRCQ vs. Output Current IQ”. Also, the output capacitor shall be sized to buffer load transients. An input capacitor CI is recommended to buffer line influences. Connect the capacitors close to the IC terminals. Protection circuitry prevent the IC as well as the application from destruction in case of catastrophic events. These safeguards contain output current limitation, reverse polarity protection as well as thermal shutdown in case of overtemperature. In order to avoid excessive power dissipation beyond the capability of the pass element and the package, the maximum output current is decreased at high input voltages. The overtemperature protection circuit prevents the IC from immediate destruction under fault conditions (e. g. output continuously short-circuited) by reducing the output current. Please note that a junction temperature above 150 °C is outside the maximum ratings and reduces the IC lifetime. The IFX21401 is protected from a reverse (i.e. negative polarity) input voltage. During reverse input voltage there is a small of current flowing into the IC and thermal shutdown protection is not operating. For reverse current details refer to the electrical characteristics table and typical performance graphs. Table 1 Electrical Characteristics Tracking Regulator VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 125 °C; all voltages with respect to ground (unless otherwise specified). Pos. Parameter Symbol Limit Values Unit Conditions Min. Typ. Max. -5 – 5 mV 1 mA ≤ IQ ≤ 10 mA; 6 V ≤ VI ≤ 16 V 5.1.2 -25 – 25 mV 1 mA ≤ IQ ≤ 50 mA; 6 V ≤ VI ≤ 28 V 5.1.3 -25 – 25 mV 1 mA ≤ IQ ≤ 10 mA; 6 V ≤ VI ≤ 40V 5.1.1 Output Voltage Tracking Accuracy Δ VQ 5.1.4 Load Regulation steady-state |dVQ,load| – – 15 mV IQ = 1 mA to 30 mA; 5.1.5 Line Regulation steady-state |dVQ,line| – – 10 mV 5.1.6 Power Supply Ripple Rejection PSRR – 48 – dB 5.1.7 Dropout Voltage Vdr = VI - VQ Vdr – 100 300 mV 5.1.8 Output Current Limitation IQ,max 51 85 120 mA VI = 6 V to 40 V; IQ = 10 mA fripple = 100 Hz; Vripple = 1 Vpp 1) IQ = 10 mA VADJ ≥ 4 V 2) VQ = (VADJ - 0.1 V) Data Sheet 6 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics Table 1 Electrical Characteristics Tracking Regulator VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 125 °C; all voltages with respect to ground (unless otherwise specified). Pos. Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions VI = 0 V; VQ = 16 V; VADJ = 5 V VI = -16 V; VQ = 0 V; VADJ = 5 V Reverse Current IQ -5 -1 – mA 5.1.10 Reverse Current at Negative Input Voltage II -10 -2 – mA Tj,eq 151 – 200 °C 5.1.9 Overtemperature Protection: 5.1.11 Junction Temperature Equilibrium Tj increasing due to power dissipation generated by the IC 1) 1) Parameter not subject to production test; specified by design. 2) Measured when the output voltage VQ has dropped 100 mV from its nominal value. Data Sheet 7 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics Typical Performance Characteristics Tracking Regulator VADJ/EN = 5 V (unless otherwise noted) Output Voltage VQ vs. Adjust Voltage VADJ Output Voltage VQ vs. Input Voltage VI VQ-VADJ.vsd V Q [V] VQ-VI.vsd VI = 13.5 V V Q [V] 4 4 3 3 2 VI = 13.5 V Vdr 2 T j = 150 °C T j = -40 °C Tj = -40 °C 1 1 T j = 150 °C 1 2 3 4 1 5 3 7 VADJ [V] Maximum Output Current IQ vs. Input Voltage VI 120 IQ [mA] VI [V] Line Regulation dVQ,line vs. Input Voltage Change dVI) SOA.VSD dVQ-dVI.vsd Δ VQ [mV] VADJ = 5 V Tj = 25 °C 80 VI,initial = 6 V VADJ = 5 V IQ = 5 mA 0.3 Tj = 125 °C 60 0.2 40 0.1 20 0 steady-state condition 0 10 20 30 40 0 VI [V] Data Sheet 5 10 15 20 25 30 35 40 ΔVI [V] 8 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics Typical Performance Characteristics Tracking Regulator VADJ/EN = 5 V (unless otherwise noted) Load Regulation dVQ,line vs. Output Current Change dIQ Output Capacitor Series Resistor ESRCQ vs. Output Current IQ dVQ-dIQ.vsd Δ VQ [mV] ESR-IQ.vsd 10 ESR CQ IQ,initial = 1 mA VADJ = 5 V [Ω] C Q = 2.2 µF -2 C Q = 1 µF 1 T j = 25 °C -4 Stable Region Tj = 125 °C -6 0.1 -8 VI < 28 V -40 °C < T j < 150 °C steady-state condition 0 24 12 36 0.01 48 0 20 10 30 Line Transient Response 50 40 ΔΙQ [mA] IQ [mA] Load Transient Response dIQresponse.vsd dVI-reponse.vsd Δ VQ Δ VQ [mV] [mV] 0 0 -20 -50 -40 I Q = 5 mA C Q = 2.2 µF Ceramic VI VI = 13.5 V VADJ = 5 V C Q = 2.2 µF Ceramic ΙQ [V] [mA] 16 30 9 5 0 20 40 60 0 80 40 60 80 t [µs] t [µs] Data Sheet 20 9 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics Typical Performance Characteristics Tracking Regulator VADJ/EN = 5 V (unless otherwise noted) Tracking Accuracy ΔVQ vs. Junction Temperature Tj Dropout Voltage Vdr vs. Output Current IQ dVQ-Tj.vsd ΔVQ Vdr-IQ_log.vsd V dr [mV] [mV] T j = 150 °C 8 IQ = 50 mA T j = 25 °C 4 100 0 IQ = 1 mA -4 -40 -20 0 20 40 10 60 80 100 120 140 1 10 50 T j [°C] Dropout Voltage Vdr vs. Junction Temperature Tj I Q [mA] Output Current Limitation IQ,max vs. Output Voltage VQ IQmax-VQ.vsd Vdr-Tj.vsd VI = 13.5 V VADJ = 5 V V dr [mV] 5 VQ [V] 250 3 200 Tj = 125°C IQ = 10 mA 150 2 1 100 -40 -20 0 20 40 60 0 20 80 100 120 140 40 60 80 100 IQ [mA] T j [°C] Data Sheet Tj = 25°C 10 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics Typical Performance Characteristics Tracking Regulator VADJ/EN = 5 V (unless otherwise noted) Reverse Output Current IQ vs. Output Voltage VQ Reverse Current II vs. Input Voltage VI +0.5 +0.5 IQ-VQ.vsd I Q [mA] II-VI.vsd I I [mA] VI = 0 V V ADJ = 5 V -0.5 -0.5 -1 -1 VQ = 0 V VADJ = 5 V T j = -40 °C T j = -40 °C -1.5 T j = 150 °C -1.5 T j = 150 °C -2 -2 0 8 16 24 -32 32 VQ [V] -24 -16 -8 0 VI [V] Power Supply Ripple Rejection PSRR PSRR.vsd 60 PSRR [dB] IQ = 5 mA 40 30 20 10 0.01 VRIPPLE = 1 V VIN = 13.5 V C Q = 2.2 µF Ceramic T j = 25 °C 0.1 1 10 100 f [kHz] Data Sheet 11 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics 5.2 Current Consumption Table 2 Electrical Characteristics Current Consumption VI = 13.5 V; VADJ/EN ≥ 2.5 V; -40 °C ≤ Tj ≤ 125 °C; all voltages with respect to ground (unless otherwise specified). Pos. Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions VADJ/EN ≤ 0.4 V; Tj ≤ 85 °C IQ ≤ 1 mA; IQ ≤ 30 mA; VADJ = VI = 5 V; IQ = 0 mA 5.2.1 Quiescent Current Stand-by Mode Iq1 – 10 20 µA 5.2.2 Current Consumption Iq = II - IQ Iq2 – 140 200 µA – 3 5 mA Current Consumption Dropout Region; Iq = II - IQ Iq3 – 1 2 mA 5.2.3 5.2.4 Typical Performance Characteristics Current Consumption VADJ/EN = 5 V (unless otherwise noted) Current Consumption Iq1, Iq2 vs. Junction Temperature Tj Current Consumption Iq2 vs. Output Current IQ Iq-IQ.vsd Iq-Tj.vsd I q2 [mA] 1 I q [mA] I Q = 30 mA V EN/ADJ = 5 V VI = 9 V VI = 13.5 V VI = 13.5V VEN/ADJ = 5 V VI = 32 V IQ = 1 mA 1 0.1 Iq1 [µA] 16 VI = 32 V V I = 13.5V V EN/ADJ = 0 V 12 -40 -20 0 20 40 60 0.1 80 100 120 140 Tj [°C] Data Sheet 1 50 10 IQ [mA] 12 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics Current Consumption Iq2 vs. Input Voltage VI Iq-VI.vsd 12 VADJ = 5 V I q [mA] IQ = 50 mA 8 6 4 IQ = 30 mA 2 IQ = 10 mA 6 10 14 18 22 24 VI [V] Data Sheet 13 Rev. 1.01, 2009-10-19 IFX21401 Electrical Characteristics 5.3 Adjust / Enable Input In order to reduce the quiescent current to a minimum, the IFX21401MB can be switched to stand-by mode by setting the adjust/enable input “ADJ/EN” to “low”. Table 3 Electrical Characteristics Adjust / Enable VI = 13.5 V; VADJ ≥ 2.5 V; -40 °C ≤ Tj ≤ 125 °C; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified). Pos. Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions 5.3.1 Adjust / Enable Input Current IADJ – 0.1 0.5 µA VADJ = 5 V; 5.3.2 Adjust / Enable Low Signal Valid VADJ,low – – 0.4 V VQ = 0 V; 5.3.3 Adjust / Enable High Signal Valid (Tracking Region) VADJ,high 2.5 – 36 V |VQ - VADJ| < 25 mV; Typical Performance Characteristics Adjust / Enable Input VADJ/EN = 5V (unless otherwise noted) Startup Sequence 4250-2_startup.vsd V [V] Overshoot depends on load current, CQ , ESR CQ 4 VADJ 3 2 dVQ / dt = (IQ,max-I Load ) / C Q 1 0 20 40 60 80 100 120 140 t [µs] Data Sheet 14 Rev. 1.01, 2009-10-19 IFX21401 Package Outlines 6 Package Outlines 2.9 ±0.2 (2.2) B 1.2 +0.1 -0.05 1.1 MAX. (0.3) 1 2 +0.2 acc. to DIN 6784 3 0.3 +0.1 -0.05 0.15 +0.1 -0.06 +0.1 0.6 -0.05 0.2 0.95 M 1.6 ±0.1 4 10˚ MAX. (0.23) 1) (0.13) 5 0.25 ±0.1 10˚ MAX. 0.1 MAX. 2.5 ±0.1 (0.4) 1) A A 1.9 1) Contour of slot depends on profile of gull-wing lead form 0.25 M B GPW05997 2.3 1.3 2.9 1.9 2.3 1.3 1.45 1.3 MIN. Outline PG-SCT595-5 1.6 Figure 3 0.4 0.75 0.4 0.95 0.75 HLG09053 0.95 HLG09090 Reflow Soldering Figure 4 Wave Soldering Footprint PG-SCT595-5 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). For further information on packages, please visit our website: http://www.infineon.com/packages Data Sheet 15 Dimensions in mm Rev. 1.01, 2009-10-19 IFX21401 Revision History 7 Revision History Revision Date Changes 1.01 2009-10-19 Coverpage changed Overview page: Inserted reference statement to TLE/TLF series. 1.0 2009-04-28 Initial Release Data Sheet 16 Rev. 1.01, 2009-10-19 Edition 2009-10-19 Published by Infineon Technologies AG 81726 Munich, Germany © 2009 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a 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. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.