Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

LM5010A Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM5010A
Description  High Voltage 1A Step Down Switching Regulator
Download  17 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM5010A Datasheet(HTML) 3 Page - National Semiconductor (TI)

  LM5010A Datasheet HTML 1Page - National Semiconductor (TI) LM5010A Datasheet HTML 2Page - National Semiconductor (TI) LM5010A Datasheet HTML 3Page - National Semiconductor (TI) LM5010A Datasheet HTML 4Page - National Semiconductor (TI) LM5010A Datasheet HTML 5Page - National Semiconductor (TI) LM5010A Datasheet HTML 6Page - National Semiconductor (TI) LM5010A Datasheet HTML 7Page - National Semiconductor (TI) LM5010A Datasheet HTML 8Page - National Semiconductor (TI) LM5010A Datasheet HTML 9Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 3 / 17 page
background image
Pin Descriptions
Pin Number
Name
Description
Application Information
LLP-10
TSSOP-14
1
2
SW
Switching Node
Internally connected to the buck switch source.
Connect to the inductor, free-wheeling diode, and
bootstrap capacitor.
2
3
BST
Boost pin for bootstrap capacitor
Connect a capacitor from SW to the BST pin. The
capacitor is charged from VCC via an internal diode
during the buck switch off-time.
3
4
ISEN
Current sense
During the buck switch off-time, the inductor current
flows through the internal sense resistor, and out of
the ISEN pin to the free-wheeling diode. The current
limit comparator keeps the buck switch off if the
ISEN current exceeds 1.25A (typical).
4
5
SGND
Current Sense Ground
Re-circulating current flows into this pin to the
current sense resistor.
5
6
RTN
Circuit Ground
Ground return for all internal circuitry other than the
current sense resistor.
6
9
FB
Voltage feedback input from the
regulated output
Input to both the regulation and over-voltage
comparators. The FB pin regulation level is 2.5V.
7
10
SS
Softstart
An internal 11.5 µA current source charges the SS
pin capacitor to 2.5V to soft-start the reference input
of the regulation comparator.
8
11
RON/SD
On-time control and shutdown
An external resistor from VIN to the RON/SD pin
sets the buck switch on-time. Grounding this pin
shuts down the regulator.
9
12
VCC
Output of the bias regulator
The voltage at VCC is nominally equal to V
IN for VIN
< 8.9V, and regulated at 7V for V
IN > 8.9V.
Connect a 0.47 µF, or larger capacitor from VCC to
ground, as close as possible to the pins. An external
voltage can be applied to this pin to reduce internal
dissipation if V
IN is greater than 8.9V. MOSFET
body diodes clamp VCC to VIN if V
CC > VIN.
10
13
VIN
Input supply voltage
Nominal input range is 6V to 75V. Input bypass
capacitors should be located as close as possible to
the VIN pin and RTN pins.
1,7,8,14
NC
No connection.
No internal connection. Can be connected to ground
plane to improve heat dissipation.
EP
Exposed Pad
Exposed metal pad on the underside of the device.
It is recommended to connect this pad to the PC
board ground plane to aid in heat dissipation.
www.national.com
3


Html Pages

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


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   |   Alldatasheet API   |   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