tlf4277 Infineon Technologies Corporation, tlf4277 Datasheet
tlf4277
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tlf4277 Summary of contents
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... Adjustable Output Current Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.1.3 Overvoltage Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.1.4 Thermal Shutdown Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.2 Electrical Characteristics Current and Protection Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 Enable Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.1 Description Enable Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.2 Electrical Characteristics Enable Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 9.1 Measurement Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 10 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 11 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Data Sheet 2 TLF4277 Table of Contents Rev. 1.0, 2009-05-07 ...
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... The TLF4277 is a monolithic integrated low drop out voltage regulator capable of supplying loads up to 200 mA. For an input voltage the TLF4277 provides an adjustable output voltage in a range from The integrated current monitor function is a unique feature that provides diagnosis and system protection functionality ...
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... Block Diagram V BAT CS1 I Internal Supply lockDiagram .vsd C SO Figure 1 Block and simplified application diagram TLF4277 (Package PG-SSOP14 EP) Data Sheet R SHUNT TLF4277 CS2 Bandgap Reference Current Monitor Protection circuits GND CSO Block Diagram Regulated Output Voltage Q ADJ ...
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... C PAD Heat sink connect to PCB heat sink area and GND 2,4,6 NC Not Connected Internally not connected; Connect to PCB GND 9,11,13 NC Not Connected Internally not connected; Connect to PCB GND Data Sheet and ESR in the table Chapter 4 TLF4277 Pin Configuration Rev. 1.0, 2009-05-07 ...
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... ADJ -42 45 CS1 V -42 45 CS2 V -0.3 5 CSO T -40 150 j T -55 150 stg ESD ESD 6 TLF4277 General Product Characteristics Unit Conditions V – V – V – V – V – V – V – °C – °C – HBM 3) kV CDM Rev. 1.0, 2009-05-07 ...
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... Limit Values Min. Typ. Max. R – – 10 thJC R – 150 – thJA – 64 – – 55 – – 50 – 3 board with 1 copper layer (1 x 70µm Cu). 7 TLF4277 General Product Characteristics Unit Conditions V – CS2 SHUNT CS1 CS2 V – Ω ...
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... IC lifetime. The TLF4277 allows a negative supply voltage. However, several small currents are flowing into the IC increasing its junction temperature. This reverse current has to be considered for the thermal design, respecting that the thermal protection circuit is not operating during reverse polarity condition ...
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... Q,max -10 -6 BAT T 151 – j,sd T – 25 j,hy V has dropped 100 mV from its nominal value TLF4277 Voltage Regulator Unit Conditions Max. 1) – V – ≤ I ≤ 200 mA ≤ V ≤ BAT 1 mA ≤ ≤ 150 mA ...
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... Application Information for the setting the variable output voltage The output voltage of the TLF4277 can be adjusted between 5 V and external output voltage divider, closing the control loop to the voltage adjust pin ADJ. The voltage at pin ADJ is compared to the internal reference of typical 1. error amplifier. It controls the output voltage ...
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... µ -40 ..150 ° 6.. 100 150 PSRR -40 ° °C = 150 ° µF ceramic 13 ripple = 0.5 Vpp 0,01 0 Rev. 1.0, 2009-05-07 TLF4277 R- 200 I [mA RR 100 f [kHz] ...
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... Typ. Max. I – 150 200 q,on – 175 250 – 1.2 2.6 – 3.5 6 – – – 3 q,off – – TLF4277 Current Consumption Figure 7 Unit Conditions μA ≤ 200 μA; ≤ 25 ° CS2 Q μA I ≤ 200 μA; ...
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... V q BAT 250 150 100 100 T [°C] J Iq-IQ.vsd T= 85°C T= 25°C 120 160 I [mA Current Consumption I vs. q, Iq-Tj(IQ200µA ).vsd BAT 200 µ Rev. 1.0, 2009-05-07 TLF4277 120 150 T [°C] J ...
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... Functional Description Current and Protection Monitors The TLF4277 provides a set of advanced monitor functionality. The current flowing into the power stage can be monitored at the CSO output. In addition the current limitation can be adjusted via external resistors. Events of the implemented protection functions are reported through dedicated voltage levels at the CSO output. This information can be processed by an external µ ...
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... Data Sheet BAT 163 170 Equation V V – CS1 CS2 I ------------------------------ - CSO CS2 R CS1 ( ) × – CS1 CS2 CSO ------------------------------------------------------- - = = R CS1 V CSO 15 Current and Protection Monitor Functions I CS2 [mA] 1) (2): R SHUNT × ------------------- - R CS1 R CSO × ------------ - V SHUNT R CS1 Rev. 1.0, 2009-05-07 TLF4277 (2) (3) ...
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... Adjustable Output Current Limitation The TLF4277 has an adjustable current limitation for the current flowing into the power stage (pin CS2). If the level of the voltage drop across the sense resisto current of the TLF4277 will be limited. Setting of the adjustable current limitation A voltage level as defined in Table 7 ...
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... R = 1Ω SHUNT = 100 Ω R 0.53 mA CS1 R = 1.5 kΩ 1.03 mA CSO 1. 187 mA = 1Ω SHUNT = 100 Ω R 2.65 V CS1 R = 1.5 kΩ CSO V V < 0, 3.2 V > 1.2 * ADJ T 2.95 V 150 °C < < 180 °C j Rev. 1.0, 2009-05-07 TLF4277 Figure Q,nom 1) V REF,nom ...
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... Description Enable Function The TLF4277 can be turned on or turned off via the EN Input. With voltage levels higher than the EN Input the device will be completely turned on. A voltage level lower than quiescent current mode. In this condition the device is turned off and is not functional. The Enable Input has an build in hysteresis to avoid toggling between ON/OFF state, if signals with slow slope are applied to the input ...
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... kΩ µF Q Data Sheet R SHUNT V SHUNT CS1 I I CS2 CS1 TLF4277 CS1 CS2 Current Monitor Monitor Circuits CSO I CSO CSO 19 Application Information ADJ ADJ Adj GND Rev. 1.0, 2009-05-07 TLF4277 ...
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... For further information on Infineon packages, please visit our website: http://www.infineon.com/packages. Data Sheet C 0.08 C 14x 0. Exposed B Diepad 0 Package Outlines 0.35 x 45˚ 3.9 ±0.1 6 ±0.2 0 Bottom View 3 ±0 PG-SSOP-14-1,-2,-3-PO V02 Dimensions in mm Rev. 1.0, 2009-05-07 TLF4277 ...
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... Revision History Revision Date Changes 1.0 2009-05-07 Data Sheet Data Sheet 21 TLF4277 Revision History Rev. 1.0, 2009-05-07 ...
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Edition 2009-05-07 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 ...