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LT1432CS8 데이터시트(PDF) 3 Page - Linear Technology

부품명 LT1432CS8
상세설명  5V High Efficiency Step-Down Switching Regulator Controller
PDF  28 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LT1432CS8 데이터시트(HTML) 3 Page - Linear Technology

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3
LT1432
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Burst Mode Quiescent Input Supply Current
1.3
1.8
mA
Burst Mode Output Ripple Voltage
IOUT = 0
100
mVp-p
IOUT = 50mA
130
mVp-p
Normal Mode Equivalent Input Supply Current
Extrapolated from IOUT = 20mA
6
mA
Normal Mode Minimum Operating Input Voltage
100mA < IOUT < 1.5A
6
V
Burst Mode Minimum Operating Input Voltage
5mA < IOUT < 50mA
6.2
V
Efficiency
Normal Mode IOUT = 0.5A
91
%
Burst Mode
IOUT = 25mA
77
%
Load Regulation
Normal Mode 50mA < IOUT < 2A
10
25
mV
Burst Mode
0 < IOUT < 50mA
50
mV
ELECTRICAL C
C
HARA TERISTICS
Operating parameters in standard circuit configuration.
VIN = +12V, IOUT = 0, unless otherwise noted. These parameters guaranteed where indicated, but not tested.
S
A
CHE
TIC
EQUIVALE T
Figure 2
VIN
–
+
34
65
2
7
8
MODE
CONTROL
VLIM
+5V
GND
MODE
S3*
S1**
S2**
* S3 IS CLOSED ONLY DURING STARTUP.
** S1 AND S2 ARE SHOWN IN NORMAL
MODE. REVERSE FOR BURST MODE.
1
V+
VC
VIN
DIODE
LT1432 F02
60mV
VOUT
VSW
VC
GND
FB
VIN
LT1271



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