LTC1706CS8-19#TRPBF

1
LTC1706-19
VID Voltage Programmer
1706-19 TA01
+
+
C
C
1000pF
50pF
R
C
10k
C
C2
220pF
C
SS
0.1µF
C
OSC
47pF
R
F
4.7
1000pF
L1
3.3µH
R
SENSE
0.015
V
IN
4.5V TO 22V
V
OUT
1.3V TO 2V
7A
0.22µF
C
F
0.1µF
C
IN
10µF
30V
X2
4.7µF
M1
Si4410
M2
Si4410
*D
B
*CMDSH-3
D1
MBRS140T3
+
C
OUT
820µF
4V
X2
V
CC
FB
012
VID
LTC1706-19
FROM µP
3 GND
SENSE
V
IN
INTV
CC
C
OSC
SGND
V
OSENSE
TG
SW
PGND
BG
BOOST
RUN/SS
I
TH
SENSE
+
SENSE
LTC1435A
131
162
3
14
12
87
5
15
11
10
6
TYPICAL APPLICATIO
U
Intel Mobile Pentium II Processor Power Supply
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
±0.25% Accurate Output Voltage
Built-In 40k Pull-Up Resistors on VID Inputs
Available in SO-8 Packaging
FEATURES
The LTC
®
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.)
DESCRIPTIO
U
APPLICATIONS
U
Intel Mobile Pentium
®
II Processor Power Supply
Notebook and Palmtop Computers, PDAs
Portable Instruments
Battery-Powered Equipment
Pentium is a registered trademark of Intel Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
2
LTC1706-19
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
ORDER PART
NUMBER
LTC1706CS8-19
LTC1706IS8-19
1
2
3
4
8
7
6
5
TOP VIEW
VID1
VID0
SENSE
FB
VID2
VID3
V
CC
GND
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 110°C, θ
JA
= 120°C/W
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
T
A
= 25°C, 2.7V V
CC
5.5V, VID0 = VID1 = VID2 = VID3 = N. C., unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Operating Supply Voltage Range 2.7 5.5 V
I
VCC
Supply Current (Note 2) 0.1 5 µA
R
FB-SENSE
Resistance Between SENSE and FB 81520 k
V
OUT
Error % Output Voltage Accuracy Programmed From 1.3V to 2V 0.25 0.25 %
R
PULLUP
VID Input Pull-Up Resistance V
DIODE
= 0.6V, V
CC
= 5V, (Note 3) 40 k
VID
T
VID Input Voltage Threshold V
IL
(2.7V V
CC
5.5V) 0.4 V
V
IH
(2.7V V
CC
5.5V) 1.6 V
I
VID-LEAK
VID Input Leakage Current V
CC
< VID < 7V, (Note 3) 0.01 ±1 µA
V
PULLUP
VID Pull-Up Voltage V
CC
= 3.3V 2.8 V
V
CC
= 5V 4.5 V
The denotes specifications which apply over the full specified
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: With all four VID inputs floating, the V
CC
supply current is simply
the device leakage current. However, the V
CC
supply current will rise and
be approximately equal to the number of grounded VID input pins times
(V
CC
– 0.6V)/40k. (See the Typical Applications section for more detail.)
Note 3: Each built-in pull-up resistor attached to the VID inputs also has a
series diode connected to V
CC
to allow input voltages higher than the V
CC
supply without damage or clamping. (See Operation section for further
detail.)
S8 PART
MARKING
170619
706I19
(Note 1)
(Voltages Referred to GND Pin)
Input Supply Voltage (V
CC
) ..........................0.3V to 7V
VID Input Pins .............................................0.3V to 7V
SENSE Pin ...................................................0.3V to 7V
FB Pin ..........................................................0.3V to 7V
Operating Temperature Range
LTC1706C-19 .......................................... 0°C to 70°C
LTC1706I-19 ...................................... 40°C to 85°C
Junction Temperature........................................... 110°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
3
LTC1706-19
TYPICAL PERFOR A CE CHARACTERISTICS
UW
OUTPUT VOLTAGE (V)
1.3 1.5 1.7 1.9 2.0
ERROR (%)
1706-19 G01
0.25
0
0.25
TEMPERATURE (°C)
50 0 50 100
ERROR (%)
1706-19 G02
0.25
0
0.25
V
OUT
= 2V
V
OUT
= 1.7V
V
OUT
= 1.3V
Typical Error % vs Output Voltage Typical Error % vs Temperature
TEMPERATURE (°C)
50 0 50 100
R
FB1
(k)
1706-19 G03
30
20
10
0
TEMPERATURE (°C)
50 0 50 100
VID PULL-UP CURRENT (µA)
1706-19 G04
120
100
80
60
40
20
0
V
CC
= 5V
R
FB1
vs Temperature I
VID-PULLUP
vs Temperature
TEMPERATURE (°C)
50 0 50 100
SUPPLY CURRENT (µA)
1706-19 G05
2.0
1.5
1.0
0.5
0
V
CC
= 2.7V
V
CC
= 5V
V
CC
= 3.3V
SUPPLY VOLTAGE (V)
02468
SUPPLY CURRENT (µA)
1706-19 G06
5
4
3
2
1
0
Supply Current vs Temperature
Supply Current vs Supply Voltage

LTC1706CS8-19#TRPBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Power Management Specialized - PMIC VID V Progmer
Lifecycle:
New from this manufacturer.
Delivery:
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