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LM2587SX-ADJ Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM2587SX-ADJ Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 27 page LM2587-5.0 Electrical Characteristics (Continued) Symbol Parameters Conditions Typical Min Max Units Voltage V COMP = 1.0V ∆V REF Reference Voltage V IN = 4V to 40V 3.3 mV Line Regulation G M Error Amp I COMP = −30 µA to +30 µA 0.750 0.447 1.491 mmho Transconductance V COMP = 1.0V A VOL Error Amp V COMP = 0.5V to 1.6V 165 99/49 V/V Voltage Gain R COMP = 1.0 M Ω (Note 6) LM2587-12 Electrical Characteristics Specifications with standard type face are for T J = 25˚C, and those in bold type face apply over full Operating Temperature Range. Unless otherwise specified, V IN =5V. Symbol Parameters Conditions Typical Min Max Units SYSTEM PARAMETERS Test Circuit of Figure 3 (Note 4) V OUT Output Voltage V IN = 4V to 10V 12.0 11.52/11.40 12.48/12.60 V I LOAD = 300 mA to 1.2A ∆V OUT/ Line Regulation V IN = 4V to 10V 20 100/200 mV ∆V IN I LOAD = 300 mA ∆V OUT/ Load Regulation V IN = 10V 20 100/200 mV ∆I LOAD I LOAD = 300 mA to 1.2A η Efficiency V IN = 10V, ILOAD =1A 90 % UNIQUE DEVICE PARAMETERS (Note 5) V REF Output Reference Measured at Feedback Pin 12.0 11.79/11.76 12.21/12.24 V Voltage V COMP = 1.0V ∆V REF Reference Voltage V IN = 4V to 40V 7.8 mV Line Regulation G M Error Amp I COMP = −30 µA to +30 µA 0.328 0.186 0.621 mmho Transconductance V COMP = 1.0V A VOL Error Amp V COMP = 0.5V to 1.6V 70 41/21 V/V Voltage Gain R COMP = 1.0 M Ω (Note 6) LM2587-ADJ Electrical Characteristics Specifications with standard type face are for T J = 25˚C, and those in bold type face apply over full Operating Temperature Range. Unless otherwise specified, V IN =5V. Symbol Parameters Conditions Typical Min Max Units SYSTEM PARAMETERS Test Circuit of Figure 3 (Note 4) V OUT Output Voltage V IN = 4V to 10V 12.0 11.52/11.40 12.48/12.60 V I LOAD = 300 mA to 1.2A ∆V OUT/ Line Regulation V IN = 4V to 10V 20 100/200 mV ∆V IN I LOAD = 300 mA ∆V OUT/ Load Regulation V IN = 10V 20 100/200 mV ∆I LOAD I LOAD = 300 mA to 1.2A η Efficiency V IN = 10V, ILOAD =1A 90 % UNIQUE DEVICE PARAMETERS (Note 5) V REF Output Reference Measured at Feedback Pin 1.230 1.208/1.205 1.252/1.255 V Voltage V COMP = 1.0V www.national.com 3 |
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