Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
LM2587S-ADJ Datasheet(PDF) 5 Page - Texas Instruments |
|
|
LM2587S-ADJ Datasheet(HTML) 5 Page - Texas Instruments |
5 / 32 page LM2587 www.ti.com SNVS115D – APRIL 2000 – REVISED APRIL 2013 Absolute Maximum Ratings (1) (2) Input Voltage −0.4V ≤ VIN ≤ 45V Switch Voltage −0.4V ≤ VSW ≤ 65V Switch Current(3) Internally Limited Compensation Pin Voltage −0.4V ≤ VCOMP ≤ 2.4V Feedback Pin Voltage −0.4V ≤ VFB ≤ 2 VOUT Storage Temperature Range −65°C to +150°C Lead Temperature (Soldering, 10 sec.) 260°C Maximum Junction Temperature(4) 150°C Power Dissipation (4) Internally Limited Minimum ESD Rating (C = 100 pF, R = 1.5 k Ω) 2 kV (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions the device is intended to be functional, but device parameter specifications may not be ensured under these conditions. For ensured specifications and test conditions, see the Electrical Characteristics. (2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications. (3) Note that switch current and output current are not identical in a step-up regulator. Output current cannot be internally limited when the LM2587 is used as a step-up regulator. To prevent damage to the switch, the output current must be externally limited to 5A. However, output current is internally limited when the LM2587 is used as a flyback regulator (see the Application Hints section for more information). (4) The junction temperature of the device (TJ) is a function of the ambient temperature (TA), the junction-to-ambient thermal resistance ( θJA), and the power dissipation of the device (PD). A thermal shutdown will occur if the temperature exceeds the maximum junction temperature of the device: PD × θJA + TA(MAX) ≥ TJ(MAX). For a safe thermal design, check that the maximum power dissipated by the device is less than: PD ≤ [TJ(MAX) − TA(MAX))]/θJA. When calculating the maximum allowable power dissipation, derate the maximum junction temperature—this ensures a margin of safety in the thermal design. Operating Ratings Supply Voltage 4V ≤ VIN ≤ 40V Output Switch Voltage 0V ≤ VSW ≤ 60V Output Switch Current ISW ≤ 5.0A Junction Temperature Range −40°C ≤ TJ ≤ +125°C LM2587-3.3 Electrical Characteristics Specifications with standard type face are for TJ = 25°C, and those in bold type face apply over full Operating Temperature Range. Unless otherwise specified, VIN = 5V. Symbol Parameters Conditions Typical Min Max Units SYSTEM PARAMETERS Test Circuit of Figure 7(1) VOUT Output Voltage VIN = 4V to 12V 3.3 3.17/3.14 3.43/3.46 V ILOAD = 400 mA to 1.75A ΔVOUT/ Line Regulation VIN = 4V to 12V 20 50/100 mV ΔVIN ILOAD = 400 mA ΔVOUT/ Load Regulation VIN = 12V 20 50/100 mV ΔILOAD ILOAD = 400 mA to 1.75A η Efficiency VIN = 12V, ILOAD = 1A 75 % UNIQUE DEVICE PARAMETERS(2) VREF Output Reference Measured at Feedback Pin 3.3 3.242/3.234 3.358/3.366 V Voltage VCOMP = 1.0V ΔVREF Reference Voltage VIN = 4V to 40V 2.0 mV Line Regulation GM Error Amp ICOMP = −30 μA to +30 μA 1.193 0.678 2.259 mmho Transconductance VCOMP = 1.0V AVOL Error Amp VCOMP = 0.5V to 1.6V 260 151/75 V/V Voltage Gain RCOMP = 1.0 MΩ (3) (1) External components such as the diode, inductor, input and output capacitors can affect switching regulator performance. When the LM2587 is used as shown in Figure 7 and Figure 8, 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. Copyright © 2000–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM2587 |
Número de pieza similar - LM2587S-ADJ |
|
Descripción similar - LM2587S-ADJ |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |