參數(shù)資料
型號: LT1432CS8
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 5V High Efficiency Step-Down Switching Regulator Controller
中文描述: SWITCHING CONTROLLER, PDSO8
封裝: PLASTIC, SO-8
文件頁數(shù): 3/28頁
文件大小: 611K
代理商: LT1432CS8
3
LT1432
PARAMETER
Burst Mode Quiescent Input Supply Current
Burst Mode Output Ripple Voltage
CONDITIONS
MIN
TYP
1.3
100
130
6
6
6.2
91
77
10
50
MAX
1.8
UNITS
mA
mV
p-p
mV
p-p
mA
I
OUT
= 0
I
OUT
= 50mA
Extrapolated from I
OUT
= 20mA
100mA < I
OUT
< 1.5A
5mA < I
OUT
< 50mA
Normal Mode I
OUT
= 0.5A
Burst Mode
I
OUT
= 25mA
Normal Mode 50mA < I
OUT
< 2A
Burst Mode
0 < I
OUT
< 50mA
Normal Mode Equivalent Input Supply Current
Normal Mode Minimum Operating Input Voltage
Burst Mode Minimum Operating Input Voltage
Efficiency
V
V
%
%
Load Regulation
25
mV
mV
ELECTRICAL C
Operating parameters in standard circuit configuration.
V
IN
= +12V, I
OUT
= 0, unless otherwise noted. These parameters guaranteed where indicated, but not tested.
HARA TERISTICS
S
W
A
CHE
TIC
EQUIVALE
U
T
Figure 2
V
IN
+
+
3
4
6
5
2
7
8
MODE
CONTROL
V
LIM
+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
+
V
C
V
IN
DIODE
LT1432 F02
60mV
V
OUT
V
SW
V
C
GND
FB
V
IN
LT1271
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