データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

LM5575-Q1 データシート(PDF) 8 Page - Texas Instruments

Click here to check the latest version.
部品番号 LM5575-Q1
部品情報  SIMPLE SWITCHER 75V, 1.5A Step-Down Switching Regulator
Download  30 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LM5575-Q1 データシート(HTML) 8 Page - Texas Instruments

Back Button LM5575-Q1 Datasheet HTML 4Page - Texas Instruments LM5575-Q1 Datasheet HTML 5Page - Texas Instruments LM5575-Q1 Datasheet HTML 6Page - Texas Instruments LM5575-Q1 Datasheet HTML 7Page - Texas Instruments LM5575-Q1 Datasheet HTML 8Page - Texas Instruments LM5575-Q1 Datasheet HTML 9Page - Texas Instruments LM5575-Q1 Datasheet HTML 10Page - Texas Instruments LM5575-Q1 Datasheet HTML 11Page - Texas Instruments LM5575-Q1 Datasheet HTML 12Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 30 page
background image
FB
SW
RT
VIN
BST
SD
5V
S
R
Q
Q
AGND
IS
CLK
+
SS
PRE
3
2
10
6
5
4
7
8
11
9
12
1
SD
Ir
LM5575
SHUTDOWN
STANDBY
7V
REGULATOR
SYNC
SYNC
OSCILLATOR
RAMP
OUT
PGND
CLK
CLK
COMP
ERROR
AMP
R3
21k
C3
470p
C11
330p
R7
10
C9
10
C10
120
R6
1.65k
R5
5.11k
L1
47 PH
C7
0.022
C8
0.47
D1
CMSH3-100
13
15
14
16
THERMAL
SHUTDOWN
UVLO
UVLO
CLK
DIS
VCC
LEVEL
SHIFT
DRIVER
1.225V
1.225V
0.7V
0.7V
R4
49.9k
C5
0.01
C6
open
R2
OPEN
C12
OPEN
C4
0.01
C2
1.0
C1
1.0
R1
OPEN
7V ± 75V
VIN
VIN
2.1V
PWM
C_LIMIT
10 PA
5 PA
VIN
TRACK
SAMPLE
and
HOLD
1V/A
RAMP GENERATOR
Ir = (10 PA x (VIN ± VOUT))
+ 50 PA
LM5575
SNVS471G – JANUARY 2007 – REVISED APRIL 2013
www.ti.com
TYPICAL APPLICATION CIRCUIT AND BLOCK DIAGRAM
Figure 9. Functional Block Diagram
Detailed Operating Description
The LM5575 switching regulator features all of the functions necessary to implement an efficient high voltage
buck regulator using a minimum of external components. This easy to use regulator integrates a 75V N-Channel
buck switch with an output current capability of 1.5 Amps. The regulator control method is based on current
mode control utilizing an emulated current ramp. Peak current mode control provides inherent line voltage feed-
forward, cycle-by-cycle current limiting, and ease of loop compensation. The use of an emulated control ramp
reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable processing of very small duty
cycles necessary in high input voltage applications. The operating frequency is user programmable from 50kHz
to 500kHz. An oscillator synchronization pin allows multiple LM5575 regulators to self synchronize or be
synchronized to an external clock. The output voltage can be set as low as 1.225V. Fault protection features
include, current limiting, thermal shutdown and remote shutdown capability. The device is available in the
HTSSOP-16 package featuring an exposed pad to aid thermal dissipation.
The functional block diagram and typical application of the LM5575 are shown in Figure 9. The LM5575 can be
applied in numerous applications to efficiently step-down a high, unregulated input voltage. The device is well
suited for telecom, industrial and automotive power bus voltage ranges.
High Voltage Start-Up Regulator
The LM5575 contains a dual-mode internal high voltage startup regulator that provides the Vcc bias supply for
the PWM controller and boot-strap MOSFET gate driver. The input pin (VIN) can be connected directly to the
input voltage, as high as 75 Volts. For input voltages below 9V, a low dropout switch connects Vcc directly to
Vin. In this supply range, Vcc is approximately equal to Vin. For Vin voltage greater than 9V, the low dropout
switch is disabled and the Vcc regulator is enabled to maintain Vcc at approximately 7V. The wide operating
range of 6V to 75V is achieved through the use of this dual mode regulator.
The output of the Vcc regulator is current limited to 25mA. Upon power up, the regulator sources current into the
capacitor connected to the VCC pin. When the voltage at the VCC pin exceeds the Vcc UVLO threshold of 5.35V
and the SD pin is greater than 1.225V, the output switch is enabled and a soft-start sequence begins. The output
switch remains enabled until Vcc falls below 5.0V or the SD pin falls below 1.125V.
8
Submit Documentation Feedback
Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LM5575


同様の部品番号 - LM5575-Q1

メーカー部品番号データシート部品情報
logo
Texas Instruments
LM5575-Q1 TI1-LM5575-Q1 Datasheet
1Mb / 31P
[Old version datasheet]   LM5575-Q1 Simple Switcher짰 75-V, 1.5-A Step-Down Switching Regulator
LM5575-Q1 TI1-LM5575-Q1 Datasheet
1Mb / 33P
[Old version datasheet]   Simple Switcher 75-V, 1.5-A Step-Down Switching Regulator
LM5575-Q1 TI-LM5575-Q1 Datasheet
994Kb / 31P
[Old version datasheet]   LM5575-Q1 Simple Switcher짰 75-V, 1.5-A Step-Down Switching Regulator
LM5575-Q1 TI-LM5575-Q1_15 Datasheet
994Kb / 31P
[Old version datasheet]   LM5575-Q1 Simple Switcher짰 75-V, 1.5-A Step-Down Switching Regulator
LM5575-Q1 TI1-LM5575-Q1_17 Datasheet
1Mb / 33P
[Old version datasheet]   Simple Switcher 75-V, 1.5-A Step-Down Switching Regulator
More results

同様の説明 - LM5575-Q1

メーカー部品番号データシート部品情報
logo
National Semiconductor ...
LM5575 NSC-LM5575_09 Datasheet
455Kb / 22P
   SIMPLE SWITCHER 75V, 1.5A Step-Down Switching Regulator
logo
Texas Instruments
LM5575MH TI-LM5575MH Datasheet
952Kb / 28P
[Old version datasheet]   LM5575/LM5575Q SIMPLE SWITCHER 75V, 1.5A Step-Down Switching Regulator
LM5575QMHX TI-LM5575QMHX Datasheet
952Kb / 28P
[Old version datasheet]   LM5575/LM5575Q SIMPLE SWITCHER 75V, 1.5A Step-Down Switching Regulator
logo
National Semiconductor ...
LM5574 NSC-LM5574_09 Datasheet
446Kb / 22P
   SIMPLE SWITCHER 75V, 0.5A Step-Down Switching Regulator
LM5576 NSC-LM5576_09 Datasheet
465Kb / 24P
   SIMPLE SWITCHER 75V, 3A Step-Down Switching Regulator
logo
Texas Instruments
LM5574 TI1-LM5574_17 Datasheet
964Kb / 29P
[Old version datasheet]   SIMPLE SWITCHER 75V, 0.5A Step-Down Switching Regulator
LM5575 TI1-LM5575_14 Datasheet
993Kb / 28P
[Old version datasheet]   SIMPLE SWITCHER짰 75V, 1.5A Step-Down Switching Regulator
LM25575 TI1-LM25575_17 Datasheet
1Mb / 32P
[Old version datasheet]   SIMPLE SWITCHER 42V, 1.5A Step-Down Switching Regulator
LM5575 TI1-LM5575 Datasheet
995Kb / 28P
[Old version datasheet]   LM5575/LM5575Q SIMPLE SWITCHER짰 75V, 1.5A Step-Down Switching Regulator
LM5576MHX TI-LM5576MHX Datasheet
1,022Kb / 30P
[Old version datasheet]   LM5576/LM5576-Q1 SIMPLE SWITCHER 75V, 3A Step-Down Switching 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 21 22 23 24 25 26 27 28 29 30


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
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