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LM2591HVS-ADJ Datasheet(PDF) 3 Page - Texas Instruments |
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LM2591HVS-ADJ Datasheet(HTML) 3 Page - Texas Instruments |
3 / 29 page LM2591HV www.ti.com SNVS074D – MAY 2001 – REVISED APRIL 2013 ELECTRICAL CHARACTERISTICS LM2591HV-5.0 Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Symbol Parameter Conditions LM2591HV-5.0 Units (Limits) Typ (1) Limit (2) SYSTEM PARAMETERS Test Circuit Test Circuit and Layout Guidelines(3) VOUT Output Voltage 7V ≤ VIN ≤ 60V, 0.2A ≤ ILOAD ≤ 1A 5 V 4.800/4.750 V(min) 5.200/5.250 V(max) η Efficiency VIN = 12V, ILOAD = 1A 82 % (1) Typical numbers are at 25°C and represent the most likely norm. (2) All limits ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (3) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2591HV is used as shown in Test Circuit and Layout Guidelines test circuit, system performance will be as shown in Electrical Characteristics. ELECTRICAL CHARACTERISTICS LM2591HV-ADJ Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Symbol Parameter Conditions LM2591HV-ADJ Units (Limits) Typ (1) Limit (2) SYSTEM PARAMETERS Test Circuit Test Circuit and Layout Guidelines(3) VFB Feedback Voltage 4.5V ≤ VIN ≤ 60V, 0.2A ≤ ILOAD ≤ 1A 1.230 V VOUT programmed for 3V. Circuit of Test Circuit and 1.193/1.180 V(min) Layout Guidelines. 1.267/1.280 V(max) η Efficiency VIN = 12V, VOUT = 3V, ILOAD = 1A 76 % (1) Typical numbers are at 25°C and represent the most likely norm. (2) All limits ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (3) External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the LM2591HV is used as shown in Test Circuit and Layout Guidelines test circuit, system performance will be as shown in Electrical Characteristics. ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, VIN = 12V for the 3.3V, 5V, and Adjustable version. ILOAD = 500 mA Symbol Parameter Conditions LM2591HV-XX Units (Limits) Typ (1) Limit (2) DEVICE PARAMETERS Ib Feedback Bias Current Adjustable Version Only, VFB = 1.3V 10 nA 50/100 nA (max) fO Oscillator Frequency See (3) 150 kHz 127/110 kHz(min) 173/173 kHz(max) VSAT Saturation Voltage IOUT = 1A (4) (5) 0.95 V 1.2/1.3 V(max) (1) Typical numbers are at 25°C and represent the most likely norm. (2) All limits ensured at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (3) The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of current overload. (4) No diode, inductor or capacitor connected to output pin. (5) Feedback pin removed from output and connected to 0V to force the output transistor switch ON. Copyright © 2001–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM2591HV |
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