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LM2679SX-5.0 датащи(PDF) 6 Page - Texas Instruments |
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LM2679SX-5.0 датащи(HTML) 6 Page - Texas Instruments |
6 / 37 page 6 LM2679 SNVS026O – MARCH 2000 – REVISED JUNE 2016 www.ti.com Product Folder Links: LM2679 Submit Documentation Feedback Copyright © 2000–2016, Texas Instruments Incorporated (1) All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are specified through correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (2) Typical values are determined with TA = TJ = 25°C and represent the most likely norm. 6.7 Electrical Characteristics – 12 V Specifications apply for TA = TJ = 25°C and RADJ = 5.6 kΩ (unless otherwise noted). PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT VOUT Output voltage VIN = 15 V to 40 V, 100 mA ≤ IOUT ≤ 5 A TJ = 25°C 11.76 12 12.24 V TJ = –40°C to 125°C 11.64 12.36 η Efficiency VIN = 24 V, ILOAD = 5 A 92% (1) All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are specified through correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (2) Typical values are determined with TA = TJ = 25°C and represent the most likely norm. 6.8 Electrical Characteristics – Adjustable Specifications apply for TA = TJ = 25°C and RADJ = 5.6 kΩ (unless otherwise noted). PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT VFB Feedback voltage VIN = 8 V to 40 V, 100 mA ≤ IOUT ≤ 5 A, VOUT programmed for 5 V TJ = 25°C 1.186 1.21 1.234 V TJ = –40°C to 125°C 1.174 1.246 η Efficiency VIN = 12 V, ILOAD = 5 A 84% (1) The peak switch current limit is determined by the following relationship: ICL = 37,125 / RADJ 6.9 Electrical Characteristics – All Output Voltage Versions Specifications are for TA = TJ = 25°C, VIN = 12 V for the 3.3 V, 5-V, and adjustable versions, and VIN = 24 V for the 12-V version (unless otherwise specified). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IQ Quiescent current VFEEDBACK = 8 V for 3.3-V, 5-V, and adjustable versions, VFEEDBACK = 15 V for 12-V version 4.2 6 mA VADJ Current limit adjust voltage TJ = 25°C 1.181 1.21 1.229 V TJ = –40°C to 125°C 1.169 1.246 ICL Current limit RADJ = 5.6 kΩ (1) TJ = 25°C 5.5 6.3 7.6 A TJ = –40°C to 125°C 5.3 8.1 IL Output leakage current VIN = 40 V, soft-start pin = 0 V VSWITCH = 0 V 1 1.5 mA VSWITCH = −1 V 6 15 RDS(ON) Switch ON-resistance ISWITCH = 5 A TJ = 25°C 0.12 0.14 Ω TJ = –40°C to 125°C 0.225 fO Oscillator frequency Measured at switch pin TJ = 25°C 260 kHz TJ = –40°C to 125°C 225 280 D Duty cycle Maximum duty cycle 91% Minimum duty cycle 0% IBIAS Feedback bias current VFEEDBACK = 1.3 V (adjustable version only) 85 nA VSFST Soft-start threshold voltage TJ = 25°C 0.63 V TJ = –40°C to 125°C 0.53 0.74 ISFST Soft-start pin current Soft-start pin = 0 V TJ = 25°C 3.7 μA TJ = –40°C to 125°C 6.9 |
Аналогичный номер детали - LM2679SX-5.0 |
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Аналогичное описание - LM2679SX-5.0 |
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