LTC1706-19
VID Voltage Programmer
FEATURES
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DESCRIPTIO
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s
Programs Regulator Output Voltage from 1.3V to
2V in 50mV Steps
Programs an Entire Family of Linear Technology
DC/DC Converters
Fully Compliant with the Intel Mobile VID
Specification
鹵0.25%
Accurate Output Voltage
Built-In 40k Pull-Up Resistors on VID Inputs
Available in SO-8 Packaging
The LTC
廬
1706-19 is a precision, digitally programmed,
resistive ladder which adjusts the output of any 1.19V
referenced regulator. Depending on the state of the four
VID inputs, an output voltage between 1.3V and 2V is
programmed in 50mV increments.
The LTC1706-19 is designed specifically to program an
entire family of Linear Technology DC/DC converters in full
compliance with the Intel Mobile VID specification.
The LTC1706-19 programs the following Linear Technol-
ogy DC/DC converter products: LTC1433, LTC1434,
LTC1435, LTC1435A, LTC1436, LTC1437, LTC1438,
LTC1439, LTC1538-AUX, LTC1539, LTC1624 and
LTC1625. (Consult factory for future compatible DC/DC
converter products.)
, LTC and LT are registered trademarks of Linear Technology Corporation.
Pentium is a registered trademark of Intel Corporation.
APPLICATIONS
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Intel Mobile Pentium
廬
II Processor Power Supply
Notebook and Palmtop Computers, PDAs
Portable Instruments
Battery-Powered Equipment
TYPICAL APPLICATIO
C
OSC
47pF
1
2
3
C
SS
0.1碌F
C
OSC
RUN/SS
I
TH
LTC1435A
C
C
1000pF
C
C2
220pF
R
C
10k
50pF
Intel Mobile Pentium II Processor Power Supply
R
F
4.7鈩?/div>
V
IN
4.5V TO 22V
V
IN
TG
13
16
M1
Si4410
C
F
0.1碌F
+
C
IN
10碌F
30V
X2
R
SENSE
0.015鈩?/div>
V
OUT
1.3V TO 2V
7A
SW
14
L1
3.3碌H
INTV
CC
5
6
SGND
V
OSENSE
BOOST
BG
PGND
SENSE
鈥?/div>
7
SENSE
+
8
12
*D
B
0.22碌F
15
+
11
10
4.7碌F
M2
Si4410
D1
MBRS140T3
1000pF
*CMDSH-3
1706-19 TA01
U
SENSE
V
CC
U
U
+
FB
LTC1706-19
C
OUT
820碌F
4V
X2
VID
0 1 2 3
GND
FROM
碌P
1
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