LTC1706IS8-19 查看數據表（PDF） - Linear Technology
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LTC1706IS8-19 Datasheet PDF : 8 Pages
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LTC1706-19
TYPICAL APPLICATIO S
High Efficiency Low Noise Synchronous Step-Down Switching Regulator
0.1µF
10k
EXTERNAL
FREQUENCY
COSC
39pF
1
PLL LPF
24
PLLIN
SYNCHRONIZATION
VIN
4.5V TO 22V
2
COSC
3
RUN/SS
18
VIN
21
TGL
+
M1
Si4412DY
CIN
22µF
35V
CSS
0.1µF
CC
510pF
4
ITH
19
TGS
LTC1436A-PLL
20
SW
M3
IRLML2803
X2
L1
3.3µH
7
NC VPROG
RC
10k
6
SGND
17
INTVCC
*DB
0.22µF
100pF
8
VOSENSE
22
BOOST
+
16
BG
4.7µF
M2
Si4412DY
D1
MBRS140T3
RSENSE
0.02Ω
15
PGND
SENSE–
9
SENSE+
10
*CMDSH-3
1000pF
3
VCC
6
SENSE
5
FB LTC1706-19
VID
0123
GND
781 2
4
FROM µP
VOUT
1.3V TO 2V
5A
+
COUT
100µF
10V
×2
1706-19 TA03
Ultrafast Transient Response Low Dropout Regulator with Adjustable Output Voltage
VCC
VIN
3.3V
12V
0.1µF
7
VID0
3
VCC SENSE 6
8
VID1
LTC1706-19
1
VID2
2
VID3 GND
4
5
FB
1
SHDN
8
IPOS
2
VIN
7
INEG
1µF
LT1575-ADJ
3
6
5Ω
GND
GATE
4
FB
5
COMP
+
220µF
IRFZ24
7.5k
10pF
1000pF
1µF
× 24
1706-19 TA04
3.3V
ADJUSTABLE
VOUT
1.27V TO 2.03V
(50.8mV STEPS)
Used with the LT1575-ADJ, which has a 1.21V reference,
the LTC1706-19 programs the output voltage of the
ultrafast transient response low dropout regulator that’s
ideal for today’s power-hungry microprocessors. How-
ever, since the LT1575 does not have a 1.19V reference,
the output range will instead be from 1.27V to 2.03V in
steps of 50.8mV.
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
7
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