ltc1706ems-85-trpbf Linear Technology Corporation, ltc1706ems-85-trpbf Datasheet - Page 7

• Manufacturer Part Number: ltc1706ems-85-trpbf
• Description: Vid Voltage Programmer
• Manufacturer: Linear Technology Corporation

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-
TYPICAL APPLICATIO S
0.1 F
*CMDSH-3
C
SS
510pF
100pF
C
10k
C
R
C
C
39pF
10k
OSC
NC
0.1 F
0.1 F
2
3
4
7
6
8
7
8
1
2
C
RUN/SS
I
V
SGND
V
PLL LPF
TH
OSC
PROG
OSENSE
SENSE
VID0
VID1
VID2
VID3
Ultrafast Transient Response Low Dropout Regulator with Adjustable Output Voltage
LTC1436A-PLL
9
1
LTC1706-19
–
1000pF
GND
3.3V
V
V
High Efficiency Low Noise Synchronous Step-Down Switching Regulator
CC
CC
3
4
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.
SENSE
PLLIN
SENSE
INTV
BOOST
PGND
10
24
TGL
TGS
SW
FB
V
BG
+
CC
IN
U
6
5
18
21
19
20
17
22
16
15
EXTERNAL
FREQUENCY
SYNCHRONIZATION
+
M3
IRLML2803
4.7 F
12V
V
IN
*D
1 F
B
0.22 F
4.5V TO 22V
1
2
3
4
V
SHDN
V
GND
FB
IN
IN
M1
Si4412DY
M2
Si4412DY
LT1575-ADJ
3.3 H
COMP
L1
GATE
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.
I
I
+
POS
NEG
D1
MBRS140T3
10pF
8
7
6
5
C
22 F
35V
X2
IN
5
7.5k
1000pF
R
0.02
SENSE
IRFZ24
3
5
1 F
24
V
FB
+
FROM P
CC
0 1 2
7 8 1 2
VID
1706-19 TA04
220 F
LTC1706-19
3
SENSE
6
GND
LTC1706-19
4
3.3V
ADJUSTABLE
V
1.27V TO 2.03V
(50.8mV STEPS)
OUT
+
C
100 F
10V
OUT
2
V
1.3V TO 2V
5A
1706-19 TA03
OUT
7