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LM2623QNHLTQ1 Fiches technique(PDF) 5 Page - Texas Instruments |
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LM2623QNHLTQ1 Fiches technique(HTML) 5 Page - Texas Instruments |
5 / 20 page 5 LM2623-Q1 www.ti.com SNVSAO5 – OCTOBER 2017 Product Folder Links: LM2623-Q1 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) VDD tied to BOOT and EN pins. Frequency pin tied to VDD through 121-KΩ resistor. VDD_ST = VDD when start-up occurs. VIN is VDD + D1 voltage (usually 10 mV to 50 mV at start-up). (2) This is the current into the VDD pin. (3) This is the total current into pins VDD, BOOT, SW, and FREQ. (4) When the EN pin is below VEN_LO, the regulator is shut down; when it is above VEN_HI, the regulator is operating. 6.5 Electrical Characteristics Limits apply for TJ = 25°C and VDD = VOUT = 3.3 V, unless otherwise specified. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT GENERAL VDD_ST Start-up supply voltage 25°C ILOAD = 0 mA (1) 1.1 V VIN_OP Minimum operating supply voltage (once started) ILOAD = 0 mA 0.65 0.9 V VFB FB pin voltage 1.24 V –40°C to 85°C 1.2028 1.2772 –40°C to 125°C 1.2028 1.2772 VOUT_MA X Maximum output voltage 14 V η Efficiency VIN = 3.6 V; VOUT = 5 V, ILOAD = 500 mA 87% VIN = 2.5 V; VOUT = 3.3 V, ILOAD = 200 mA 87% D Switch duty cycle 17% IDD Operating quiescent current(2) FB pin > 1.3 V, EN pin at VDD 80 µA FB pin > 1.3 V, EN pin at VDD , –40°C to 85°C 110 FB pin > 1.3 V, EN pin at VDD, –40°C to 125°C 110 ISD Shutdown quiescent current(3) VDD, BOOT, and SW pins at 5 V, EN pin < 200 mV 0.01 µA VDD, BOOT, and SW pins at 5 V, EN pin < 200 mV, –40°C to 85°C 2.5 VDD, BOOT, and SW pins at 5 V, EN pin < 200 mV, –40°C to 125°C 2.5 ICL Switch peak current limit 2.2 2.85 A RDSON MOSFET switch on resistance 0.17 Ω –40°C to 85°C 0.26 –40°C to 125° 0.26 ENABLE SECTION VEN_LO EN pin voltage low(4) –40°C to 85°C 0.15 VDD V –40°C to 125°C 0.15 VDD VEN_HI EN pin voltage high(4) –40°C to 85°C 0.7 VDD V –40°C to 125°C 0.7 VDD |
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