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): 5/28頁
文件大小: 611K
代理商: LT1432CS8
5
LT1432
Restart Load Current
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
No Load Battery Current in Burst
Mode
BATTERY VOLTAGE (V)
0
B
3
4
5
20
LT1432 G09
2
1
0
5
10
15
25
T
J
= 25°C
JUNCTION TEMPERATURE (°C)
0
T
μ
m
2000
3000
100
LT1432 G12
1000
40
25
50
75
4000
Gm =
I(V
C
PIN)
V
OUT
Transconductance – V
OUT
to V
C
Current
Line Regulation
Burst Mode Load Regulation
0
0
20
20
LT1432 G13
–20
–40
5
10
15
40
BURST MODE
NORMAL MODE
O
INPUT VOLTAGE (V)
T
J
= 25°C
LOAD CURRENT (mA)
0
O
–25
0
80
–50
–75
20
40
60
100
25
LT1432 G14
T
J
= 25°C
Mode Pin Current
JUNCTION TEMPERATURE (°C)
0
C
20
30
100
LT1432 G16
10
0
25
50
75
40
V
OUT
= 4.5V
Restart Time Delay
JUNCTION TEMPERATURE (°C)
0
T
2
3
100
LT1432 G16
1
0
25
50
75
4
Startup Switch Characteristics
BATTERY VOLTAGE (V)
0
I
1.0
1.5
20
LT1432 G10
0.5
0
5
10
15
25
2.0
* TO CALCULATE TOTAL BATTERY CURRENT IN BURST
MODE, MULTIPLY LOAD CURRENT BY INCREMENTAL
FACTOR AND ADD NO-LOAD CURRENT.
T
J
= 25°C
Incremental Battery Current * in
Burst Mode
MODE PIN VOLTAGE (V)
0
C
μ
A
20
40
60
8
LT1432 G15
0
–20
–40
2
4
6
10
MODE DRIVE MUST
SINK
30
μ
A AT 0V
T
J
= 25°C
V
+
TO V
IN
VOLTAGE
–2
V
–20
0
5
20
LT1432 G18
–40
–60
–80
–1
0
10
30
T
J
= 25°C
NOTE VERTICAL &
HORIZONTAL SCALE
CHANGES AT 0,0
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