LTC1436A View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1436A' PDF : 28 Pages View PDF
LTC1436A
LTC1436A-PLL/LTC1437A
TYPICAL APPLICATIONS
Intel Mobile CPU VID Core Power Converter with 1.8V I/O Supply
10k 0.1µF
COSC
43pF
CSS
0.1µF
RC
10k
CC2
1000pF
CC
220pF
1
PLL LPF
2
COSC
3
RUN/SS
4
ITH
7 VPROG
EXTERNAL
FREQUENCY
24 SYNCHRONIZATION
PLLIN
18
VIN
4.7Ω
0.1µF
VIN
4.5V TO 22V
21
TGL
19
TGS
20
SW
M3
IRLML2803
M1
Si4410DY
L1
3.3µH
+
CIN
22µF
35V
X2
RSENSE
0.015Ω
6 SGND
17
INTVCC
3
VCC
6
SENSE
100pF
LTC1436A-PLL
8
22
VOSENSE
BOOST +
9 SENSE–
1000pF
16
BG
10 SENSE+
15
PGND
AUX 11 AUXON
ON/OFF
12
AUXFB
13
AUXDR
*DB 0.22µF
4.7µF
M2
Si4410DY
D1
MBRS140T3
LTC1706-19
+
5
FB
VID
0 1 2 3 GND
7 812 4
FROM µP
VCORE
1.3V TO 2V
7A
COUT
820µF
4V
×2
SGND
(PIN 6)
*CMDSH-3
**INPUT CAPACITOR MAY NOT BE NECESSARY IF
3.3V SUPPLY HAS SUFFICIENT CAPACITANCE
47k
MMBT2907L
VIN2
47µF 3.3V
4V**
10.5k
20k
51pF
47µF
4V
VI/O
1.8V
150mA
1436 TA09
LTC1436A 3.3V/4A Fixed Output with 5V Auxiliary Output
VIN
COSC
4.5V TO 28V
68pF
1
COSC
24
POR
+ CIN
22µF
2
23
RUN/SS
BOOST
CC2
51pF
CSS
0.1µF
3
LBO
22
TGL
4
CC
LBI
21
SW
M1
S4412DY
35V
× 2 MBRS1100T3
+ CSEC
24V
3.3µF
510pF
5
20
M3
RC
ITH
6
TGS
19
IRLML2803
10k
SFB
7
LTC1436A
VIN
18
CMDSH-3 0.1µF
SGND
8
VPROG
INTVCC
17
BG
+
4.7µF
M2
T1
10µH
1:1
35V
RSENSE
0.025Ω +
COUT
100µF
10V
VOUT
3.3V
4A
9
VOSENSE
16
PGND
Si4412DY MBRS140T3
×2
SGND
1000pF
10 SENSE–
11 SENSE+
15
EXTVCC
14
AUXDR
(PIN 7)
47k
AUX
ON/OFF
12
AUXON
13
AUXFB
R8
51pF 2N2905A
R6
180k
430k
+
R7
VOUT2
56k
5V
100mA
3.3µF
R5
100k
1436 TA02
25
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