IFX21401 Low Dropout Voltage Tracking Regulator IFX21401MB Data Sheet Rev. 1.
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 ≤
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
