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LTC3422 bảng dữ liệu(PDF) 14 Page - Linear Technology

tên linh kiện LTC3422
Giải thích chi tiết về linh kiện  1.5A, 3MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  16 Pages
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nhà sản xuất  LINER [Linear Technology]
Trang chủ  http://www.linear.com
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LTC3422 bảng dữ liệu(HTML) 14 Page - Linear Technology

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LTC3422
14
3422fa
2-Cell to 3.3V at 600mA Application
Figure 3. Typical Error Amplifier Compensation
APPLICATIO S I FOR ATIO
1.216V
FB
6
VOUT
10
VC
CC1
CC2
3422 F03
RZ
R2
R1
7
–
+
gm ERROR
AMPLIFIER
TYPICAL APPLICATIO S
CSS
0.1
µF
CC2
22pF
CC1
1nF
OFF ON
RZ
15k
COUT*
22
µF
CIN*
4.7
µF
VIN
1.8V TO 3.2V
2 CELLS
+
CB
2.2nF
*LOCATE COMPONENTS CLOSE TO PINS
CIN: TAIYO YUDEN X5R JMK212BJ475MD
COUT: TAIYO YUDEN X5R JMK325BJ226MM
L1: TDK RLF7030T-4R7M3R4
RT
28k
R1
931k
VOUT
3.3V
600mA
R2
549k
RB
301k
3422 TA02a
SS
VC
BURST
SHDN
FB
SYNC
VOUT
RT
GND
VIN
LTC3422
L1
4.7
µH
SW
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3422 TA02b
0
10000
1
1000
100
10
0
1
VIN = 3V
VIN = 2.4V
VIN = 1.8V
VIN = 3V
VIN = 2.4V
VIN = 1.8V
VIN = 1.8V
VIN = 2.4V
VIN = 3V
VIN = 1.8V
VIN = 2.4V
VIN = 3V
BURST EFFICIENCY
PWM EFFICIENCY
PWM POWER LOSSES
BURST POWER LOSSES
2-Cell to 3.3V Efficiency and Power Loss at 1MHz
CSS
0.1
µF
CC2
22pF
CC1
1nF
OFF ON
RZ
15k
COUT*
10
µF
CIN*
10
µF
VIN
0.9V TO 1.6V
1 CELL
CB
2.2nF
*LOCATE COMPONENTS CLOSE TO PINS
CIN, COUT: TAIYO YUDEN X5R JMK212BJ106MM
L1: TDK RLF7030T-4R7M3R4
RT
28k
R1
931k
VOUT
3.3V
240mA
R2
549k
RB
374k
3422 TA03a
SS
VC
BURST
SHDN
FB
SYNC
VOUT
RT
GND
VIN
LTC3422
L1
4.7
µH
SW
+
LOAD CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3422 TA03b
0
10000
1
1000
100
10
0
1
VIN = 1.6V
VIN = 1.25V
VIN = 0.9V
VIN = 0.9V
VIN = 1.25V
VIN = 1.6V
BURST EFFICIENCY
PWM EFFICIENCY
PWM POWER LOSSES
BURST POWER LOSSES
1-Cell to 3.3V at 240mA Application
1-Cell to 3.3V Efficiency and Power Loss at 1MHz



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