5-V Low-Drop Voltage Regulator TLE 4263 Features Output voltage tolerance 2 % 200 mA output current capability Low-drop voltage Very low standby current consumption Overtemperature protection Reverse polarity protection Short-circuit proof Adjustable reset threshold Watchdog Wide temperature range Suitable for use in automotive electronics Type Ordering Code P-DSO-14-8 Package TLE 4263 GM Q67006-A9357-A201K5 P-DSO-14-8 SMD type Functional Description TLE 4263 is a 5-V low-drop voltage regulator in a P-DSO-14-8 SMD package. The maximum input voltage is 45 V. The maximum output current is more than 200 mA. The IC is short-circuit proof and incorporates temperature protection which turns off the IC at overtemperature. The IC regulates an input voltage VI in the range of 6 V < VI < 45 V to VQ,nom = 5.0 V. A reset signal is generated for an output voltage of VQ,rt < 4.5 V. This voltage threshold can be decreased to 3.5 V by external connection of a voltage divider. The reset delay can be set externally by a capacitor. The integrated watchdog logic supervises the connected microcontroller. The IC can be switched off via the inhibit input, which causes the current consumption to drop from 900 ← A to typical 0 ←A. Data Sheet Rev. 2.4 1 2001-01-17 TLE 4263 Choosing External Components The input capacitor CI is necessary for compensation of line influences. Using a resistor of approx. 1 τ in series with CI, the oscillating circuit consisting of input inductivity and input capacitance can be damped. The output capacitor is necessary for the stability of the regulating circuit. Stability is guaranteed at values ∫ 22 ←F and an ESR of 3 τ within the operating temperature range. For small tolerances of the reset delay the spread of the capacitance of the delay capacitor and its temperature coefficient should be noted. TLE 4263 GM RO N.C. GND GND GND D RADJ 1 2 3 4 5 6 7 14 13 12 11 10 9 8 INH Ι GND GND GND Q W AEP03067 Figure 1 Pin Configuration (top view) Data Sheet Rev. 2.4 2 2001-01-17 TLE 4263 Pin Definitions and Functions Pin Symbol (P-DSO-14-4) Function 1 RO Reset output; open-collector output connected to the output via a resistor of 30 kτ. 2 N.C. Not connected 3 - 5, 10 - 12 GND Ground 6 D Reset delay; connected to ground with a capacitor. 7 RADJ Reset threshold; to adjust the switching threshold connect a voltage divider (output to GND) to the pin. If this input is connected to GND, reset is triggered at an output voltage of 4.5 V. 8 W Watchdog; rising edge triggered input for monitoring a microcontroller. 9 Q 5-V output voltage; block to ground with a capacitor, C ∫ 22 ←F, ESR 3 τ at 13 I Input voltage; block to ground directly at the IC with a ceramic capacitor. 14 INH Inhibit; TTL-compatible, low-active input. Data Sheet Rev. 2.4 3 2001-01-17 TLE 4263 Circuit Description The control amplifier compares a reference voltage, which is kept highly accurate by resistance adjustment, to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents any over-saturation of the power element. If the externally scaled down output voltage at the reset threshold input drops below 1.35 V, the external reset delay capacitor is discharged by the reset generator. When the voltage of the capacitor reaches the lower threshold VDRL, a reset signal occurs at the reset output and is held until the upper threshold VDU is exceeded. If the reset threshold input is connected to GND, reset is triggered at an output voltage of typ. 4.65 V. A connected microcontroller will be monitored through the watchdog logic. In case of missing pulses at pin W, the reset output is set to low. The pulse sequence time can be set in a wide range with the reset delay capacitor. The IC can be switched at the TTL-compatible, low-active inhibit input. The IC also incorporates a number of internal circuits for protection against: Overload Overtemperature Reverse polarity W Saturation Control and Protection Circuit Temperature Sensor Input Watchdog Ι Q Control Amplifier Buffer Bandgap Reference Reset Generator Output D Reset Delay RO Reset Output RADJ Reset Threshold Adjustment INH Inhibit Figure 2 GND GND AEB03068 Block Diagram Data Sheet Rev. 2.4 4 2001-01-17 TLE 4263 Absolute Maximum Ratings Parameter Symbol Limit Values Unit Remarks min. max. VI II – 42 – 45 – V – – internally limited VR IR – 0.3 – 42 – V – – internally limited VRADJ – 0.3 6 V – VD ID – 0.3 – 42 – V – – internally limited VQ IQ – 0.3 – 7 – V – – internally limited VINH – 42 45 V – VW – 0.3 6 V – IGND – 0.5 – A – Input I Input voltage Input current Reset Output RO Voltage Current Reset Threshold RADJ Voltage Reset Delay D Voltage Current Output Q Voltage Current Inhibit INH Voltage Watchdog W Voltage Ground GND Current Data Sheet Rev. 2.4 5 2001-01-17 TLE 4263 Absolute Maximum Ratings (cont’d) Parameter Symbol Limit Values Unit Remarks min. max. Tj Tstg – – 50 150 150 C C – – Input voltage VI – 45 V – Junction temperature Tj – 40 150 C – Thermal resistance junction-ambient junction-pin Rthj-a Rthj-p – – 112 32 K/W K/W 1) Temperature Junction temperature Storage temperature Operating Range 1) 2) 2) Package mounted on PCB 80 ⌠ 80 ⌠ 1.5mm3; 35← Cu; 5← Sn; Footprint only; zero airflow. Measured to pin 4. Data Sheet Rev. 2.4 6 2001-01-17 TLE 4263 Characteristics VI = 13.5 V; – 40 C < Tj < 125 C; VINH > 3.5 V; (unless specified otherwise) Parameter Symbol Limit Values min. typ. max. Unit Test Condition Normal Operation Output voltage VQ 4.90 5.00 5.10 V 5 mA IQ 150 mA; 6 V VI 28 V Output voltage VQ 4.90 5.00 5.10 V 6 V VI 32 V; IQ = 100 mA; Tj = 100 C Output current IQ 200 250 – mA Current consumption; Iq Iq = II – IQ – 0 50 ←A Iq Iq Iq – – – 900 10 15 1300 ←A 18 mA 23 mA IQ = 0 mA IQ = 150 mA IQ = 150 mA; VI = 4.5 V Drop voltage Vdr – 0.35 0.50 V IQ = 150 mA1) Load regulation αVQ,lo – – 25 mV IQ = 5 mA to 150 mA Line regulation αVQ.li – 3 25 mV VI = 6 V to 28 V; IQ = 150 mA Power Supply Ripple Rejection PSRR – 54 – dB fr = 100 Hz; Vr = 0.5 VPP VQ,rt 4.5 4.65 4.8 V VRADJ = 0 V 1.26 1.35 1.44 V VQ > 3.5 V – 0.10 0.40 V IRO = 1 mA 1) VINH = 0 Reset Generator Switching threshold Reset adjust threshold VRADJ,th Reset low voltage VRO,l Note: The reset output is low within the range VQ = 1 V to VQ,rt 1) Drop voltage = Vi – VQ (measured when the output voltage has dropped 100 mV from the nominal value obtained at 6 V input) Data Sheet Rev. 2.4 7 2001-01-17 TLE 4263 Characteristics (cont’d) VI = 13.5 V; – 40 C < Tj < 125 C; VINH > 3.5 V; (unless specified otherwise) Parameter Saturation voltage Symbol VD,sat Upper timing threshold VDU Limit Values Unit Test Condition min. typ. max. – 50 100 mV VQ < VR,th 1.45 1.70 2.05 V – Lower reset timing threshold VDRL 0.20 0.35 0.55 V – Charge current ID,ch 40 60 85 ←A – Reset delay time trd 1.3 2.8 4.1 ms CD = 100 nF Reset reaction time trr 0.5 1.2 4 ←s CD = 100 nF ID,wd 4.40 6.25 9.10 ←A VD = 1.0 V Upper timing threshold VDU 1.45 1.70 2.05 V – Lower timing threshold VDWL 0.20 0.35 0.55 V – Watchdog trigger time TWI,tr 16 22.5 27 ms CD = 100 nF Watchdog Discharge current Inhibit Switching voltage VINH,ON 3.6 – – V IC turned on Turn-OFF voltage VINH,OFF – – 0.8 V IC turned off Input current IINH 5 10 25 ←A VINH = 5 V Note: The reset output is low within the range VQ = 1 V to VQ,rt Data Sheet Rev. 2.4 8 2001-01-17 TLE 4263 Ι Input Q Output 470 nF 6 V...45 V KL 15 INH Reset To MC RO D TLE 4263G 100 k Ω 100 nF 22 µF RADJ GND 56 k Ω W Watchdog from MC Figure 3 AES03069 Application Circuit ΙΙ Ι 1000 µF 470 nF ΙE VΙ + Vr VE PSRR = 20 log Q 22 µF TLE 4263G INH VC ΙQ RO D Ι D, ch CD GND Ι GND W RADJ VW VRADJ 5.6 k Ω Ι RD VQ VRO 100 nF Vr ∆VQ, r AES03070 Figure 4 Test Circuit Data Sheet Rev. 2.4 9 2001-01-17 TLE 4263 Reset Timing The power-on reset delay time is defined by the charging time of an external capacitor CD which can be calculated as follows: CD = (trd ⌠ ID,ch)/αV Definitions: CD = delay capacitor trd = reset delay time ID,ch = charge current, typical 60 ← A αV = VDU, typical 1.70 V VDU = upper delay switching threshold at CD for reset delay time VI < trr t VQ VQ, rt dV ID, ch = dt CD VD t VDU VDRL trd trr t VRO t Power-ON Reset Figure 5 Overtemperature Voltage Drop at Input Undervoltage Secondary Load Bounce Spike AET03066 Time Response, Watchdog with High-Frequency Clock Reset Switching Threshold The present default value is typ. 4.65 V. When using the TLE 4263 the reset threshold can be set to 3.5 V < VQ,rt < 4.6 V by connecting an external voltage divider to pin RADJ. The calculation can be easily done since the reset adjust input current can be neglected. If this feature is not needed, the pin has to be connected to GND. VQ, rt = (1+R1/R2) ⌠ VRADJ,th Data Sheet Rev. 2.4 10 2001-01-17 TLE 4263 VQ,rt = reset threshold VRADJ, th = comparator reference voltage, typical 1.35 V Definitions: Watchdog Timing The frequency of the watchdog pulses has to be higher than the minimum pulse sequence which is set by the external reset delay capacitor CD. Calculation can be done according to the formulas given in Figure 6. VW t VΙ VQ t T WD, p VD t T WI, tr VDU VDWL VRO t WD, L T WI, tr = (VDU - VDWL ) Ι D, wd C D ; T WD, p = (VDU -VDWL ) (Ι D, wc + Ι D, wd ) Ι D, wc x Ι D, wd C D ; t WD, L = t (VDU - VDWL ) Ι D, wc t CD AED03099 Figure 6 Timing of the Watchdog FunctionReset Data Sheet Rev. 2.4 11 2001-01-17 TLE 4263 Timing Threshold Voltage VDU and VDRL versus Temperature Reset Switching Threshold versus Output Voltage AED01098 1.6 V RADJ V 1.4 1.2 2.0 V Ι = 13.5 V 0.8 1.6 0.6 1.2 0.4 0.8 0.2 0.4 0 1 2 3 0 -40 4 V 5 VQ VDRL 0 1.0 10 0.8 8 0.6 6 0.4 4 0.2 2 80 0 -40 120 ˚C 160 Tj Data Sheet Rev. 2.4 120 ˚C 160 AED03063 12 40 80 16 µA IINH 14 1.2 0 40 Current Consumption of Inhibit versus Temperature AED01088 1.6 VRADJ V 1.4 VDU Tj Reset Switching Threshold versus Temperature 0 -40 VI = 13.5 V 2.4 1.0 0 AED03062 3.2 V V 2.8 VINH = 5 V 0 40 80 120 ˚C 160 Tj 12 2001-01-17 TLE 4263 Drop Voltage versus OutputCurrent Vdr Current Consumption versus Output Current AED03060 800 mV 700 600 AED03061 32 Iq mA 28 24 T j = 125 ˚C 25 ˚C 500 20 VI = 13.5 V 400 16 300 12 200 8 100 4 0 0 50 100 150 mA 200 0 300 0 50 100 150 200 IQ Ιq Output Voltage versus Input Voltage AED01096 AED01097 12 mA VQ 25 V 10 20 8 R L = 25 Ω 15 6 10 4 5 2 0 300 IQ Current Consumption versus Input Voltage 30 mA 0 10 Data Sheet Rev. 2.4 20 30 0 40 V 50 VΙ 13 R L = 25 Ω 0 2 4 6 8 V 10 VΙ 2001-01-17 TLE 4263 Charge Current and Discharge Current versus Temperature Ι Output Voltage versus Temperature AED03064 80 µA 70 VQ Ι D, ch 5.1 V Ι = 13.5 V V D = 1.5 V 5.0 60 50 40 AED01090 5.2 V VI = 13.5 V 4.9 30 4.8 20 0 -40 4.7 Ι D, dis 10 0 80 40 4.6 -40 120 C 160 Tj 0 40 80 120 ˚C 160 Tj Pulse Time versus Temperature Output Current versus Input Voltage AED03065 40 ms TWI,tr 35 AED01091 300 ΙQ mA T j = 25 C 250 30 200 V Ι = 13.5 V C D = 100 nF 25 20 150 15 100 10 50 5 0 -40 0 Data Sheet Rev. 2.4 40 80 0 120 C 160 Tj 14 0 10 20 30 40 V 50 VΙ 2001-01-17 TLE 4263 Package Outlines GPS09222 P-DSO-14-8 (Plastic Dual Small Outline) Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book “Package Information”. SMD = Surface Mounted Device Data Sheet Rev. 2.4 15 Dimensions in mm 2001-01-17 TLE 4263 Data Sheet Rev. 2.4 16 2001-01-17 TLE 4263 Data Sheet Rev. 2.4 17 2001-01-17 TLE 4263 Edition 2001-01-17 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 München © Infineon Technologies AG1999. All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as warranted characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of noninfringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide (see address list). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems 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. Data Sheet Rev. 2.4 18 2001-01-17 This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components.