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LM2623 Arkusz danych(PDF) 5 Page - Texas Instruments |
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LM2623 Arkusz danych(HTML) 5 Page - Texas Instruments |
5 / 22 page V DD = 3.3V TEMPERATURE (ºC) -40 -25 -10 5 20 35 50 65 80 1.2365 1.236 1.2355 1.235 1.2345 1.234 1.2335 1.233 1.2325 300mA 600mA 10mA 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5 Vin LM2623 www.ti.com SNVS188H – MAY 2004 – REVISED NOVEMBER 2014 6.5 Electrical Characteristics Limits apply for TJ = 25°C and VDD = VOUT = 3.3 V, unless otherwise specified. PARAMETER TEST CONDITION MIN TYP MAX UNIT VDD_ST Start-up supply voltage 25°C ILOAD = 0 mA (1) 1.1 V VIN_OP Minimum operating supply ILOAD = 0 mA 0.65 0.8 V voltage (once started) VFB FB pin voltage 1.24 V −40°C to 85°C 1.2028 1.2772 VOUT_MAX Maximum output voltage 14 V VIN = 3.6 V; VOUT = 5 V; 87% ILOAD = 500 mA η Efficiency VIN = 2.5 V; VOUT = 3.3 V; 87% ILOAD = 200 mA 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 110 85°C VDD, BOOT and SW Pins at 5 V; 0.01 EN Pin < 200 mV ISD Shutdown quiescent current(3) µA VDD, BOOT and SW Pins at 5 V; 2.5 EN Pin < 200 mV, −40°C to 85°C ICL Switch peak current limit LM2623A 2.2 2. 85 A IC Switch peak current limit LM2623 1.2 RDS_ON MOSFET switch on resistance 0.17 Ω −40°C to 85°C 0.26 ENABLE SECTION VEN_LO EN pin voltage low(4) −40°C to 85°C 0.15 VDD V VEN_HI EN pin voltage high(4) −40°C to 85°C 0.7 VDD (1) VDD tied to BOOT and EN pins. Frequency pin tied to VDD through 121K 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. 6.6 Typical Characteristics VOUT = 5 V Figure 1. Efficiency vs Supply Voltage Figure 2. VFB vs Temperature Copyright © 2004–2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM2623 |
Podobny numer części - LM2623 |
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Podobny opis - LM2623 |
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