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LTC3421 数据表(PDF) 7 Page - Linear Technology

部件名 LTC3421
功能描述  3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect
PDF  16 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3421 数据表(HTML) 7 Page - Linear Technology

Back Button LTC3421 Datasheet HTML 3Page - Linear Technology LTC3421 Datasheet HTML 4Page - Linear Technology LTC3421 Datasheet HTML 5Page - Linear Technology LTC3421 Datasheet HTML 6Page - Linear Technology LTC3421 Datasheet HTML 7Page - Linear Technology LTC3421 Datasheet HTML 8Page - Linear Technology LTC3421 Datasheet HTML 9Page - Linear Technology LTC3421 Datasheet HTML 10Page - Linear Technology LTC3421 Datasheet HTML 11Page - Linear Technology Next Button
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background image
LTC3421
7
3421f
BLOCK DIAGRA
Σ
+
–
+
–
+
PWM
LOGIC
CURRENT
COMP
ERROR
AMP
1.22V
CURRENT
LIMIT
++
Burst Mode
CONTROL
THERMAL
REG/SHDN
OSC
1.22V REF
2%
SLEEP
1%
UV
OV
OFF
–3%
0.97V/1.05V
BURST
I/3000
3%
GND
–
+
–
+
BURST
COMP
9
LBO
3421 BD
22
VC
24
FB
1
ILIM
SS
ISENSE
AMP
NMOS
ANTICROSS
CONDUCTION
ILIMIT =
150k/RC1
VIN
VDD
ANTIRING
–
+
VIN
WELL
SWITCH
IZERO
AMP
CP
CSS
RZ
R2
R1
VOUT
2.40V TO 5.25V
RC1
8
VOUT
17
VOUT
19
VOUT
20
6
SW
14
VIN
1V TO 4.5V
21
ENB
VOUT
4
VREF
3
RT
5
SYNC
VIN
VOUT
SYNC
IN
0.6V/
0.63V
7
LBI
R2
ENB
23
10
SHDN
SHUTDOWN
2
SW
15
SW
PMOS
16
VOUTS
18
PGND
11
EXPOSED
PAD
25
PGND
12
PGND
13
SLOPE COMP
R1



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