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LM2586SX-ADJ Datasheet(PDF) 5 Page - Texas Instruments |
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LM2586SX-ADJ Datasheet(HTML) 5 Page - Texas Instruments |
5 / 38 page LM2586 www.ti.com SNVS121D – MAY 1996 – REVISED APRIL 2013 LM2586-ADJ Symbol Parameters Conditions Typical Min Max Units SYSTEM PARAMETERS Test Circuit of Figure 21 (1) VOUT Output Voltage VIN = 4V to 10V 12.0 11.52/11.40 12.48/12.60 V ILOAD = 0.2A to 0.8A ΔVOUT/ Line Regulation VIN = 4V to 10V 20 100/200 mV ΔVIN ILOAD = 0.2A ΔVOUT/ Load Regulation VIN = 10V 20 100/200 mV ΔILOAD ILOAD = 0.2A to 0.8A η Efficiency VIN = 10V, ILOAD = 0.6A 93 % UNIQUE DEVICE PARAMETERS (2) VREF Output Reference Measured at Feedback Pin 1.230 1.208/1.205 1.252/1.255 V Voltage VCOMP = 1.0V ΔVREF Reference Voltage VIN = 4V to 40V 1.5 mV Line Regulation GM Error Amp ICOMP = −30 μA to +30 μA 3.200 1.800 6.000 mmho Transconductance VCOMP = 1.0V AVOL Error Amp Voltage Gain VCOMP = 0.5V to 1.6V, 670 400/200 V/V RCOMP = 1.0 MΩ (3) IB Error Amp VCOMP = 1.0V 125 425/600 nA Input Bias Current COMMON DEVICE PARAMETERS for all versions (2) IS Input Supply Current Switch Off (4) 11 15.5/16.5 mA ISWITCH = 1.8A 50 100/115 mA IS/D Shutdown Input VSH = 3V 16 100/300 μA Supply Current VUV Input Supply RLOAD = 100Ω 3.30 3.05 3.75 V Undervoltage Lockout fO Oscillator Frequency Measured at Switch Pin RLOAD = 100Ω, VCOMP = 1.0V 100 85/75 115/125 kHz Freq. Adj. Pin Open (Pin 1) RSET = 22 kΩ 200 kHz fSC Short-Circuit Measured at Switch Pin Frequency RLOAD = 100Ω 25 kHz VFEEDBACK = 1.15V VEAO Error Amplifier Upper Limit (5) 2.8 2.6/2.4 V Output Swing Lower Limit (4) 0.25 0.40/0.55 V IEAO Error Amp See (6) Output Current 165 110/70 260/320 μA (Source or Sink) ISS Soft Start Current VFEEDBACK = 0.92V 11.0 8.0/7.0 17.0/19.0 μA VCOMP = 1.0V DMAX Maximum Duty Cycle RLOAD = 100Ω (5) 98 93/90 % IL Switch Leakage Switch Off 15 300/600 μA Current VSWITCH = 60V VSUS Switch Sustaining Voltage dV/dT = 1.5V/ns 65 V VSAT Switch Saturation Voltage ISWITCH = 3.0A 0.45 0.65/0.9 V (1) External components such as the diode, inductor, input and output capacitors can affect switching regulator performance. When the LM2586 is used as shown in Figure 20 and Figure 21, system performance will be as specified by the system parameters. (2) All room temperature limits are 100% production tested, and all limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. (3) A 1.0 M Ω resistor is connected to the compensation pin (which is the error amplifier output) to ensure accuracy in measuring AVOL. (4) To measure this parameter, the feedback voltage is set to a high value, depending on the output version of the device, to force the error amplifier output low and the switch off. (5) To measure this parameter, the feedback voltage is set to a low value, depending on the output version of the device, to force the error amplifier output high and the switch on. (6) To measure the worst-case error amplifier output current, the LM2586 is tested with the feedback voltage set to its low value (Note 4) and at its high value (Note 5). Copyright © 1996–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM2586 |
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