The LT1761ES5-5#TRPBF is an Analog Devices 100 mA, low noise, LDO micropower regulator in a TSOT-23 package. It provides a fixed 5 V output with only 20 \u00b5A quiescent current and 20 \u00b5VRMS output noise (10 Hz to 100 kHz). The device operates from 1.8 V to 20 V input, features 300 mV dropout voltage at 100 mA, and includes reverse-battery protection, current limiting, and thermal shutdown. It is packaged in a 5-lead TSOT-23 rated for -40\u00b0C to +125\u00b0C.<\/p>\n
| Output Voltage<\/td>\n | 5 V (fixed)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||
| Corriente de salida<\/td>\n | 100 mA<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||
| Input Voltage Range<\/td>\n | 1.8 V to 20 V<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||
| Dropout Voltage<\/td>\n | 300 mV at 100 mA<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||
| Corriente de reposo<\/td>\n | 20 \u00b5A<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||
| Shutdown Current<\/td>\n | <0.1 \u00b5A<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||
| Output Noise<\/td>\n | 20 \u00b5VRMS (10 Hz-100 kHz)<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||
| Paquete<\/td>\n | 5-Lead TSOT-23<\/td>\n<\/tr>\n<\/table>\nCaracter\u00edsticas<\/h2>\nAplicaciones<\/h2>\nProduct Overview The LT1761ES5-5#TRPBF is an Analog Devices 100 mA, low noise, LDO micropower regulator in a TSOT-23 package. It provides a fixed 5 V output with only 20 \u00b5A quiescent current and 20 \u00b5VRMS output noise (10 Hz to 100 kHz). The device operates from 1.8 V to 20 V input, features 300 mV […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,32],"tags":[],"chip_brand":[165],"class_list":["post-8717","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-adi"],"acf":{"brief_explanation":"100mA low-noise LDO, 5V fixed output, 20\u00b5A Iq, 20\u00b5VRMS noise, 1.8-20V input, TSOT-23","date_code":"","package_case":"5-Lead TSOT-23 (2.9 x 1.6 x 0.9 mm)","in_stock":5127,"datasheet":"https:\/\/www.analog.com\/media\/en\/technical-documentation\/data-sheets\/1761sff.pdf","price":"$2.18 @ 1ku","product_introduction":"The LT1761ES5-5#TRPBF is an Analog Devices micropower low noise LDO regulator providing a fixed 5 V output at up to 100 mA. With an external 0.01 \u00b5F bypass capacitor, output noise drops to 20 \u00b5VRMS over 10 Hz to 100 kHz bandwidth, making it ideal for noise-sensitive applications. The 20 \u00b5A quiescent current suits battery-powered systems, dropping below 0.1 \u00b5A in shutdown. It operates from 1.8 V to 20 V input with 300 mV dropout at full load. The regulator is stable with output capacitors as low as 1 \u00b5F, including ceramic types. Internal protection includes reverse-battery, current limiting, thermal limiting, and reverse current protection.","working_principle":"The LT1761 operates as a low-dropout linear regulator with three subsystems: (1) The pass element is a PNP transistor that allows low dropout voltage (300 mV at 100 mA) since the input-to-output voltage only needs to exceed the VCE(sat) of the pass device. The PNP architecture also prevents reverse current flow when input voltage drops below output. (2) The error amplifier compares a fraction of the output voltage (from an internal resistor divider for fixed versions) with an internal bandgap reference, driving the pass transistor to maintain regulation. The external 0.01 \u00b5F bypass capacitor on the BYP pin filters reference noise, achieving 20 \u00b5VRMS output noise. (3) The protection circuitry includes current limiting (foldback), thermal shutdown, reverse-battery protection, and reverse current blocking, ensuring robust operation under fault conditions.","pin_description":"
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