The TPS7A4001DGNR is a Texas Instruments 36V, 1A low-noise, high-PSRR low-dropout linear regulator with adjustable output from 1.2V to 33V. It features 72 dB PSRR at 1 kHz, 13 uVrms output noise, 400 mV dropout at 1A, and reverse current protection. Packaged in 8-pin VSSOP PowerPAD rated for -40C to +125C.<\/p>\n
| \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n | Up to 36 V<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| \u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n | 1 A<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| Dropout<\/td>\n | 400 mV at 1 A<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| PSRRR<\/td>\n | 72 dB at 1 kHz<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| Noise<\/td>\n | 13 uVrms<\/td>\n<\/tr>\n | ||||||||||||||||||||||||||||||||||||||||||
| Output Range<\/td>\n | 1.2 V to 33 V (adj)<\/td>\n<\/tr>\n<\/table>\n\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\nProduct Overview The TPS7A4001DGNR is a Texas Instruments 36V, 1A low-noise, high-PSRR low-dropout linear regulator with adjustable output from 1.2V to 33V. It features 72 dB PSRR at 1 kHz, 13 uVrms output noise, 400 mV dropout at 1A, and reverse current protection. Packaged in 8-pin VSSOP PowerPAD rated for -40C to +125C. Key Specifications […]<\/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":[138],"class_list":["post-8750","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"36V 1A low-noise LDO, 72dB PSRR, 13uVrms noise, adj 1.2-33V, VSSOP-8","date_code":"","package_case":"8-Pin VSSOP PowerPAD (3.0 x 3.0 x 0.9 mm with exposed pad)","in_stock":3560,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps7a40.pdf","price":"$1.85 @ 1ku","product_introduction":"The TPS7A4001DGNR is a Texas Instruments low-noise, high-PSRR LDO linear regulator capable of sourcing 1 A from up to 36 V input. The adjustable output ranges from 1.2 V to 33 V, set by external resistor divider from the FB pin. With 72 dB PSRR at 1 kHz and 13 uVrms output noise (10 Hz-100 kHz), it provides ultra-clean power for noise-sensitive RF, PLL, and precision converter applications. The 400 mV maximum dropout at 1 A enables efficient regulation from 5V or 3.3V pre-regulators. Reverse current protection blocks parasitic current flow from output to input during power-down. Thermal shutdown and current limiting protect against fault conditions. Packaged in 8-pin VSSOP PowerPAD rated for -40C to +125C.","working_principle":"The TPS7A4001 uses a PMOS pass transistor for low dropout and reverse current blocking. The error amplifier compares a fraction of the output voltage (from the external FB divider) with an internal 1.2 V reference, driving the PMOS gate to maintain regulation. The low output noise is achieved through a filtered internal bandgap reference. The high PSRR results from the high open-loop gain of the error amplifier at low frequencies and the output capacitor impedance at high frequencies. The FB pin allows Kelvin sensing for remote load regulation. Reverse current protection detects when VOUT exceeds VIN and disables the pass transistor, preventing current flow back to the input supply.","pin_description":"
|