전자부품 데이터시트 검색엔진
  Korean  ▼

Delete All
ON OFF
ALLDATASHEET.CO.KR

X  

Preview PDF Download HTML

LM2575-12BT 데이터시트(HTML) 5 Page - Micrel Semiconductor

부품명 LM2575-12BT
상세내용  52kHz Simple 1A Buck Regulator
Download  12 Pages
Scroll/Zoom Zoom In 100% Zoom Out
제조사  MICREL [Micrel Semiconductor]
홈페이지  http://www.micrel.com
Logo 

LM2575-12BT 데이터시트(HTML) 5 Page - Micrel Semiconductor

 
Zoom Inzoom in Zoom Outzoom out
/ 12 page
 5 / 12 page
background image
Micrel, Inc.
LM2575
May 2009
5
M9999-051209-B
Symbol
Parameter
Condition
Typ
LM2575
Limit
(Note 2)
Units
(Limits)
DEVICE PARAMETERS, ADJUSTABLE REGULATOR
IB
Feedback Bias Current
VOUT = 5V
50
100/500
nA
DEVICE PARAMETERS, FIXED and ADJUSTABLE REGULATORS
fO
Oscillator Frequency
52
47/42
58/63
kHz
kHz(min)
kHz(max)
VSAT
Saturation Voltage
IOUT = 1A (Note 4)
0.9
1.2/1.4
V
V(max)
DC
Max Duty Cycle (ON)
(Note 5)
98
93
%
%(max)
ICL
Current Limit
Peak Current, tON ≤ 3µs (Note 4)
2.2
1.7/1.3
3.0/3.2
A
A(min)
A(max)
IL
Output Leakage Current
VIN = 40V, (Note 6),
Output = 0V
Output = –1V
(Note 6)
Output = –1V
75
2
30
mA(max)
mA
mA(max)
IQ
Quiescent Current
(Note 6)
5
10
mA
mA(max)
ISTBY
Standby Quiescent Current
ON/OFF Pin = 5V (OFF)
50
200
µA
µA(max)
θJA
T Package, Junction to Ambient (Note 7)
65
θJA
T Package, Junction to Ambient (Note 8)
45
θJC
T Package, Junction to Case
2
θJA
N Package, Junction to Ambient (Note 9)
85
θJA
Thermal Resistance
WM Package, Junction to Ambient (Note 9)
100
°C/W
ON/OFF CONTROL, FIXED and ADJUSTABLE REGULATORS Test Circuit Figure 1
VIH
VIL
ON/OFF Pin Logic
Input Level
VOUT = 0V
VOUT = 5V
1.4
1.2
2.2/2.4
1.0/0.8
V(min)
V(max)
IIH
ON /OFF Pin = 5V (OFF)
4
30
µA
µA(max)
IIL
ON/OFF Pin Logic
Current
ON /OFF Pin = 0V (ON)
0.01
10
µA
µA(max)
Notes:
1. Absolute Maximum Rating indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device
is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical
Characteristics.
2. All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are100%
production tested. All limits at temperature extreme are guaranteed via testing.
3. External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the
LM2575/LM1575 is used as shown in Figure 1 test circuit, system performance will be shown in system parameters section of Electrical
Characteristics.
4. Output (pin 2) sourcing current. No diode, inductor or capacitor connected to output.
5. Feedback (pin 4) removed from output and connected to 0V.
6. Feedback (pin 4) removed from output and connected to 12V to force the output transistor OFF.
7. Junction to ambient thermal resistance (no external heat sink) for the 5-pin TO-220 package mounted vertically, with 1/2" leads in a socket, or on PC
board with minimum copper area.
8. Junction to ambient thermal resistance (no external heat sink) for the 5-pin TO-220 package mounted vertically, with 1/4" leads soldered to PC
board containing approximately 4 square inches of copper area surrounding the leads.
9. Junction to ambient thermal resistance with approximately 1 square inch of pc board copper surrounding the leads. Additional copper will lower
thermal resistance further.


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12 


데이터시트 Download




링크 URL



Privacy Policy
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ]  

Alldatasheet는?   |   광고문의    |   운영자에게 연락하기   |   개인정보취급방침   |   즐겨찾기   |   링크교환   |   제조사별 검색
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