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參數(shù)資料
| 型號(hào)： | LT3407-2 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual Synchronous,400mA/800mA, 2.25MHz Step-Down DC/DC Regulator |
| 中文描述： | 雙同步，400mA/800mA，2.25MHz降壓直流/直流穩(wěn)壓器 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 239K |
| 代理商： | LT3407-2 |
LTC3548
13
3548f
Low Ripple Buck Regulators Using Ceramic Capacitors
RUN2
V
IN
V
IN
= 2.5V
TO 5.5V
V
OUT2
= 1.8V
V
= 1.2V
AT 800mA
RUN1
POR
SW1
V
FB1
GND
V
FB2
MODE/SYNC
SW2
LTC3548
C1
10
μ
F
R5
100k
POWER-ON
RESET
C4, 33pF
C5, 68pF
L1
4.7
μ
H
L2
10
μ
H
R4
887k
R2
604k
R1
604k
R3
442k
C3
10
μ
F
C2
10
μ
F
3548 TA03
C1, C2, C3: TDK C2012X5R0J106M
L1: SUMIDA CDRH2D18/HP-4R7NC
L2: SUMIDA CDRH2D18/HP-100NC
LOAD CURRENT (mA)
E
10
100
1000
3548
TA03b
100
95
90
85
80
75
70
65
60
55
50
1.8V
1.2V
V
= 3.3V
PULSE SKIP MODE
NO LOAD ON OTHER CHANNEL
Efficiency vs Load Current
TYPICAL APPLICATIO S
APPLICATIU
W
U
U
Figure 4. LTC3548 Layout Diagram (See Board Layout Checklist)
RUN2
V
IN
V
IN
V
OUT2
V
OUT1
RUN1
POR
SW1
V
FB1
GND
V
FB2
SW2
MODE/SYNC
LTC3548
C
IN
C4
C5
L1
L2
R4
R2
R1
R3
C
OUT2
C
OUT1
3548 F04
BOLD LINES INDICATE HIGH CURRENT PATHS
RUN2
V
IN
V
IN
= 2.5V*
TO 5.5V
V
OUT2
= 2.5V*
AT 400mA
V
= 1.8V
AT 800mA
RUN1
POR
SW1
V
FB1
GND
V
FB2
SW2
MODE/SYNC
LTC3548
C1
10
μ
F
R5
100k
POWER-ON
RESET
C4, 33pF
C5, 68pF
L1
2.2
μ
H
L2
4.7
μ
H
R4
887k
R2
604k
R1
301k
R3
280k
C3
4.7
μ
F
C2
10
μ
F
3548 F03
C1, C2, C3: TAIYO YUDEN JMK212BJ106MG
C3: TAIYO YUDEN JMK212BJ475MG
L1: MURATA LQH32CN2R2M11
L2: MURATA LQH32CN4R7M23
*V
OUT
CONNECTED TO V
IN
FOR V
IN
≤
2.8V (DROPOUT)
Figure 3. LTC3548 Typical Application
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|---|---|
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| LTC3701EGN | 2-Phase, Low Input Voltage, Dual Step-Down DC/DC Controller |
| LTC3701 | 16-Bit Universal Bus Driver With 3-State Outputs 48-SSOP -40 to 85 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT340Z | 制造商:SEOUL 制造商全稱:Seoul Semiconductor 功能描述:GREEN OVAL LAMP LED |
| LT341 | 制造商:SEOUL 制造商全稱:Seoul Semiconductor 功能描述:BLUE OVAL LAMP LED |
| LT3412G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| LT341BC | 制造商:Datak Corporation 功能描述: |
| LT341L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
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