Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

LM2591HV Datasheet(PDF) 9 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM2591HV
Description  SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2591HV Datasheet(HTML) 9 Page - National Semiconductor (TI)

Back Button LM2591HV Datasheet HTML 5Page - National Semiconductor (TI) LM2591HV Datasheet HTML 6Page - National Semiconductor (TI) LM2591HV Datasheet HTML 7Page - National Semiconductor (TI) LM2591HV Datasheet HTML 8Page - National Semiconductor (TI) LM2591HV Datasheet HTML 9Page - National Semiconductor (TI) LM2591HV Datasheet HTML 10Page - National Semiconductor (TI) LM2591HV Datasheet HTML 11Page - National Semiconductor (TI) LM2591HV Datasheet HTML 12Page - National Semiconductor (TI) LM2591HV Datasheet HTML 13Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 20 page
background image
Block Diagram
10129383
Pin Functions
+V
IN (Pin 1) — This is the positive input supply for the IC
switching regulator. A suitable input bypass capacitor must
be present at this pin to minimize voltage transients and to
supply the switching currents needed by the regulator.
Output (Pin 2) — Internal switch. The voltage at this pin
switches between approximately (+V
IN −VSAT) and approxi-
mately −0.5V, with a duty cycle of V
OUT/VIN.
Ground (Pin 3) — Circuit ground.
Feedback (Pin 4) — Senses the regulated output voltage to
complete the feedback loop. This pin is directly connected to
the Output for the fixed voltage versions, but is set to 1.23V
by means of a resistive divider from the output for the
Adjustable version. If a feedforward capacitor is used (Ad-
justable version), then a negative voltage spike is generated
on this pin whenever the output is shorted. This happens
because the feedforward capacitor cannot discharge fast
enough, and since one end of it is dragged to Ground, the
other end goes momentarily negative. To prevent the energy
rating of this pin from being exceeded, a small-signal Schot-
tky diode to Ground is recommended for DC input voltages
above 40V whenever a feedforward capacitor is present
(See Figure 1). Feedforward capacitor values larger than 0.1
µF are not recommended for the same reason, whatever be
the DC input voltage.
ON /OFF (Pin 5) — The regulator is in shutdown mode,
drawing about 90 µA, when this pin is driven to a high level
(
≥ 2.0V), and is in normal operation when this Pin is left
floating or driven to a low level (
≤ 0.6V). The typical value of
the threshold is 1.3V and the voltage on this pin must not
exceed 25V.
www.national.com
9


Similar Part No. - LM2591HV

ManufacturerPart #DatasheetDescription
logo
Texas Instruments
LM2591HV TI-LM2591HV Datasheet
3Mb / 29P
[Old version datasheet]   LM2591HV SIMPLE SWITCHER Power onverter 150 kHz 1A Step-Down Voltage
LM2591HV TI1-LM2591HV Datasheet
3Mb / 31P
[Old version datasheet]   SIMPLE SWITCHER Power Converter Step-Down Voltage Regulator
logo
Guangdong Youtai Semico...
LM2591HV UMW-LM2591HV Datasheet
1Mb / 14P
   1A Step-Down Voltage Regulator
LM2591HVS-12 UMW-LM2591HVS-12 Datasheet
1Mb / 14P
   1A Step-Down Voltage Regulator
logo
Texas Instruments
LM2591HVS-3.3 TI-LM2591HVS-3.3 Datasheet
3Mb / 29P
[Old version datasheet]   LM2591HV SIMPLE SWITCHER Power onverter 150 kHz 1A Step-Down Voltage
More results

Similar Description - LM2591HV

ManufacturerPart #DatasheetDescription
logo
National Semiconductor ...
LM2595 NSC-LM2595 Datasheet
935Kb / 29P
   SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2590HV NSC-LM2590HV Datasheet
752Kb / 20P
   SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
LM2598 NSC-LM2598 Datasheet
847Kb / 33P
   SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
LM2592HV NSC-LM2592HV Datasheet
655Kb / 20P
   SIMPLE SWITCHER Power Converter 150 kHz 2A Step-Down Voltage Regulator
LM2594 NSC-LM2594 Datasheet
740Kb / 28P
   SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator
LM2596 NSC-LM2596 Datasheet
736Kb / 31P
   SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
logo
Texas Instruments
LM2595 TI1-LM2595_13 Datasheet
3Mb / 41P
[Old version datasheet]   SIMPLE SWITCHER짰 Power Converter 150 kHz 1A Step-Down Voltage Regulator
LM2593HV TI1-LM2593HV Datasheet
1Mb / 31P
[Old version datasheet]   SIMPLE SWITCHER Power Converter 150-kHz, 2-A Step-Down Voltage Regulator
LM2599SX-50 TI1-LM2599SX-50 Datasheet
2Mb / 44P
[Old version datasheet]   LM2599 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
LM2596SX-5.0 TI1-LM2596SX-5.0 Datasheet
4Mb / 42P
[Old version datasheet]   LM2596 SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
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