参数资料
型号: LTC3828EG
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: Dual 2-Phase Step-Down Controller with Tracking
中文描述: 3 A DUAL SWITCHING CONTROLLER, 590 kHz SWITCHING FREQ-MAX, PDSO28
封装: 5.30 MM, PLASTIC, SSOP-28
文件页数: 6/32页
文件大小: 396K
代理商: LTC3828EG
6
LTC3828
3828f
V
ITH
(V)
0
V
S
(
80
70
60
50
40
30
20
10
0
–10
–20
2.0
3828 G16
3828 G19
3828 G20
3828 G21
3828 G22
3828 G23
3828 G24
0.5
1.0
1.5
2.5
OUTPUT CURRENT (A)
0
D
4.0
3828 G17
1.0
0.5
1.5
2.5
3.5
2.0
3.0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
SENSE
COMMON MODE VOLTAGE (V)
0
1
I
S
(
μ
A
2
4
3
5
6
3828 G18
100
50
0
–50
–100
V
1V/DIV
V
1V/DIV
V
100mV/DIV
V
100mV/DIV
I
L1
2A/DIV
V
100mV/DIV
V
100mV/DIV
SW1
20V/DIV
SW2
20V/DIV
I
IN
25A/DIV
V
IN
RIPPLE
50mV/DIV
I
L1
2A/DIV
V
1V/DIV
V
1V/DIV
V
1V/DIV
V
1V/DIV
5ms/DIV
2ms/DIV
100
μ
s/DIV
500ns/DIV
50
μ
s/DIV
50
μ
s/DIV
V
IN
= 12V
V
OUT1
= 5V
V
OUT2
= 3.3V
V
IN
= 12V
V
OUT1
= 5V
V
= 3.3V
LOAD STEP = 0A TO 3A
WITH RATIOMETRIC TRACKING
V
IN
= 12V
V
OUT1
= 5V
V
= 3.3V
LOAD STEP = 0A TO 3A
WITH RATIOMETRIC TRACKING
V
IN
= 12V
V
OUT1
= 5V
V
OUT2
= 3.3V
I
OUT5
= I
OUT3.3
= 2A
V
IN
= 12V
V
OUT1
= 5V
V
OUT2
= 3.3V
V
IN
= 12V
V
OUT1
= 5V
V
OUT2
= 3.3V
Soft Start-Up:
(Figure 14, with Coincident
Tracking)
TYPICAL PERFOR U
T
A
= 25
°
C unless otherwise noted.
Current Sense Threshold vs
I
TH
Voltage
Dropout Voltage vs Output Current
(Figure 14)
SENSE Pins Total Source Current
Soft Start-Up:
(Figure 14, with Internal Soft
Start-Up)
Soft Start-Up:
(Figure 14, with Ratiometric
Tracking)
Load Step: Burst Mode Operation
(Figure 14)
Input Source/Capacitor
Instantaneous Current
(Figure 14)
Load Step: Continuous Mode
(Figure 14)
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LTC3828 16-Bit Bus Transceiver With 3-State Outputs 48-SSOP -40 to 85
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