Q67000-A9153

TLE 4267 5-V Low-Drop Voltage Regulator TLE 4267 Bipolar IC Features q q q q q q q q q q q q q q Output voltage tolerance ≤ ± 2 % Low-drop voltage Very low standby current consumption Input voltage up to 40 V Overvoltage protection up to 60 V (≤ 400 ms) Reset function down to 1 V output voltage ESD protection up to 2000 V Adjustable reset time On/off logic Overtemperature protection Reverse polarity protection Short-circuit proof Wide temperature range Suitable for use in automotive electronics Ordering Code Package Q67000-A9153 P-TO220-7-3 P-TO220-7-180 (SMD) P-TO220-7-230 P-TO220-7-3 P-TO220-7-180 Type TLE 4267 TLE 4267 G Q67006-A9169 TLE 4267 S Q67000-A9246 Functional Description P-TO220-7-230 TLE 4267 is a 5-V low-drop voltage regulator in a TO220-7 package. It supplies an output current of > 400 mA. The IC is shortcircuit-proof and incorporates temperature protection that disables the IC at overtemperature. Application The IC regulates an input voltage VI in the range 5.5 V < VI < 40 V to VQrated = 5.0 V. A reset signal is generated for an output voltage VQ of < 4.5 V. The reset delay can be set with an external capacitor. The device has two logic inputs. It is turned-ON by a voltage of > 4 V on E2 by the ignition for example. It remains active as a function of the voltage on E6, even if the voltage on E2 goes Low. This makes it possible to implement a selfholding circuit without external components. When the device is turned-OFF, the output voltage drops to 0 V and current consumption tends towards 0 µA. Semiconductor Group 1 1998-11-01 TLE 4267 Design Notes for External Components The input capacitor CI is necessary for compensation line influences. The resonant circuit consisting of lead inductance and input capacitance can be damped by a resistor of approx. 1 Ω in series with CI. The output capacitor is necessary for the stability of the regulating circuit. Stability is guaranteed at values of ≥ 22 µF and an ESR of ≤ 3 Ω within the operating temperature range. 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-saturating of the power element. A comparator in the reset-generator block compares a reference that is independent of the input voltage to the scaled-down output voltage. If this reaches a value of 4.5 V, the reset-delay capacitor is discharged and then the reset output is set Low. As the output voltage increases again, the reset-delay capacitor is charged with constant current from VQ = 4.5 V onwards. When the capacitor voltage reaches the upper switching threshold, reset goes High again. The reset delay can be set within wide range by selection of the external capacitor. With the integrated turn-ON/turn-OFF logic it is simple to implement delayed turn-OFF without external components. Truth Table for Turn-ON/Turn-OFF Logic Pin 2 L H H X L L Pin 6 X X L L L H VQ Remarks Initial state, pin 6 internally pulled up Regulator switched on via pin 2, by ignition for example Pin 6 clamped active to ground by controller while pin 2 is still high Previous state remains, even ignition is shut off: self-holding state Ignition shut off while regulator is in self-holding state Regulator shut down by releasing of pin 6 while pin 2 remains Low, final state. No active clamping required by external selfholding circuit (µC) to keep regulator shut off. OFF ON ON ON ON OFF Pin 2: (Inhibit, E2) Enable function, active High Pin 6: (Hold, E6) Hold and release function, active Low Semiconductor Group 2 1998-11-01 TLE 4267 Pin Configuration (top view) P-TO220-7-3 P-TO220-7-180 P-TO220-7-230 1 23 456 7 12 345 6 7 1234567 Ι E2 R GND D E6 AEP01724 Ι E2 Ι R E2 GND D E6 Q AEP02123 R GND D E6 Q AEP01481 Pin Definitions and Functions Pin 1 2 3 4 5 6 7 Symbol I Function Input; block to ground directly at the IC by a ceramic capacitor Inhibit; device is turned-ON by High signal on this pin; internal pulldown resistor of 100 kΩ Reset Output; open-collector output internally connected to the output via a resistor of 30 kΩ Ground; connected to rear of chip Reset Delay; connect with capacitor to GND for setting delay Hold; see truth table above for function; this input is connected to output voltage across pullup resistor of 50 kΩ 5-V Output; block to GND with 22-µF capacitor, ESR < 3 Ω E2 R GND D E6 Q Semiconductor Group 3 1998-11-01 TLE 4267 Temperature Sensor In- 1 put Control Amplifier Adjustment Bandgap Reference Buffer Saturation Control and Protection Circuit 7 5V Output 5 Reset Delay 3 Reset Output Reset Generator Turn-ON/Turn-OFF Logic 2 Inhibit 6 E6 Hold 4 GND AEB01482 Block Diagram Absolute Maximum Ratings TJ = – 40 to 150 °C Parameter Symbol Limit Values min. Input Voltage Voltage Current Reset Output Voltage Current Reset Delay Voltage max. Unit Notes VI VI II – 42 – – 42 60 – V V – – t ≤ 400 ms Limited internally VR IR – 0.3 – 7 – V – – Limited internally Vd – 0.3 42 V – Semiconductor Group 4 1998-11-01 TLE 4267 Absolute Maximum Ratings (cont’d) TJ = – 40 to 150 °C Parameter Current Output Voltage Current Inhibit Voltage Current Hold Voltage Current GND Current Temperatures Junction temperature Storage temperature Operating Range Parameter Input voltage Junction temperature Thermal Resistance Junction ambient Junction-case Junction-case Symbol Limit Values min. max. 40 150 V °C see diagram – 5.5 – 40 Unit Notes Symbol Limit Values min. max. – – – – Unit Notes Id VQ IQ – 0.3 – 7 – V – – Limited internally VE2 IE2 – 42 –5 42 5 V mA t ≤ 400 ms VE6 IE6 – 0.3 – 7 – V mA – Limited internally IGND – 0.5 – A – TJ Tstg – – 50 150 150 °C °C – – VI TJ Rthja Rthjc Rthjc – – – 70 6 2 K/W – K/W – K/W t < 1 ms Semiconductor Group 5 1998-11-01 TLE 4267 Characteristics VI = 13.5 V; – 40 °C < TJ < 125 °C; VE2 > 4 V (unless specified otherwise) Parameter Output voltage Output voltage Output-current limiting Current consumption Iq = II – IQ Current consumption Iq = II – IQ Current consumption Iq = II – IQ Current consumption Iq = II – IQ Current consumption Iq = II – IQ Drop voltage Load regulation Supply-voltage regulation Supply-voltage rejection Longterm stability Symbol Limit Values min. typ. 5 5 – – 1.0 1.3 – – 0.3 – 15 54 0 max. 5.1 5.1 – 50 10 4 60 80 0.6 50 25 – – V V mA µA µA mA mA mA V mV mV dB mV 5 mA ≤ IQ ≤ 400 mA 6 V ≤ VI ≤ 26 V 5 mA ≤ IQ ≤ 150 mA 6 V ≤ VI ≤ 40 V 4.9 4.9 500 – – – – – – – – – – Unit Test Condition VQ VQ IQ Iq Iq Iq Iq Iq VDr ∆VQ ∆VQ SVR ∆VQ TJ = 25 °C Regulator-OFF TJ = 25 °C IC turned off IQ = 5 mA IC turned on IQ = 400 mA IQ = 400 mA VI = 5 V IQ = 400 mA1) 5 mA ≤ IQ ≤ 400 mA VI = 6 to 36 V; IQ = 5 mA fr = 100 Hz; Vr = 0.5 Vpp 1000 h 1) Drop voltage = VI – VQ (measured when the output voltage VQ has dropped 100 mV from the nominal value obtained at VI = 13.5 V) Semiconductor Group 6 1998-11-01 TLE 4267 Characteristics (cont’d) Parameter Symbol Limit Values min. Reset Generator Switching threshold Reset High level Saturation voltage typ. max. Unit Test Condition Vrt – 4.2 4.5 – – – 8 2.6 – – – 4.5 – 0.1 30 50 15 3 20 0.43 2 4.8 – 0.4 – 100 25 3.3 – – – V V V kΩ mV µA V ms V µs – VR Pullup RR VD,sat Saturation voltage Charge current Id Delay switching threshold Vdt td Delay Vst Switching threshold tt Delay Inhibit Turn-ON voltage Turn-OFF voltage Pulldown Hysteresis Input current Rext = ∞ RR = 4.7 kΩ 1) – VQ < VRT VD = 1.5 V – Cd = 100 nF – Cd = 100 nF Holding voltage Turn-OFF voltage Pullup Overvoltage Protection Turn-OFF voltage Turn-ON hysteresis VE2 VE2 RE2 ∆VE2 IE2 VE6 VE6 RE6 – 2 50 0.2 – 30 60 20 3 – 100 0.5 35 35 70 50 4 – 200 0.8 100 40 80 100 V V kΩ V µA % % kΩ IC turned-ON IC turned-OFF – – VIP2 = 4 V Referred to VQ Referred to VQ – Vi,ov ∆Vi,ov 42 2 44 – 46 6 V V – – 1) The reset output is Low between VQ = 1 V and VRT Semiconductor Group 7 1998-11-01 TLE 4267 ΙΙ 1000 µF 470 nF 1 7 ΙQ 22 µF TLE 4267 2 5 Ιd 6 4 Ι GND 3 4.7 k Ω Ι E2 VΙ ΙR VQ VR VE2 VC CD VE6 AES01483 Test Circuit Input 470 nF E2; eg from Terminal 15 Reset To MC 1 7 5 V Output 2 TLE 4267 5 22 µF 100 nF 3 4 6 E6 From µC AES01484 Application Circuit Semiconductor Group 8 1998-11-01 TLE 4267 Vi VE VE2, ON VE2, OFF VQ VRT