LTC1706-19 LINER [Linear Technology], LTC1706-19 Datasheet

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LTC1706-19

Manufacturer Part Number
LTC1706-19
Description
VID Voltage Programmer
Manufacturer
LINER [Linear Technology]
Datasheet
APPLICATIONS
FEATURES
TYPICAL APPLICATIO
220pF
*CMDSH-3
C
C2
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
Built-In 40k Pull-Up Resistors on VID Inputs
Available in SO-8 Packaging
Intel Mobile Pentium
Notebook and Palmtop Computers, PDAs
Portable Instruments
Battery-Powered Equipment
0.25% Accurate Output Voltage
0.1 F
C
SS
1000pF
50pF
C
10k
C
R
C
C
47pF
OSC
1
2
3
5
6
U
C
RUN/SS
I
SGND
V
TH
OSC
OSENSE
SENSE
7
®
LTC1435A
1000pF
II Processor Power Supply
SENSE
INTV
BOOST
PGND
8
V
SW
BG
TG
+
CC
U
IN
13
16
14
12
15
11
10
Intel Mobile Pentium II Processor Power Supply
+
4.7 F
C
0.1 F
F
4.7
R
*D
F
B
0.22 F
4.5V TO 22V
V
IN
M1
Si4410
M2
Si4410
DESCRIPTIO
3.3 H
The LTC
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.)
Pentium is a registered trademark of Intel Corporation.
+
L1
, LTC and LT are registered trademarks of Linear Technology Corporation.
VID Voltage Programmer
D1
MBRS140T3
C
10 F
30V
X2
IN
®
1706-19 is a precision, digitally programmed,
R
0.015
SENSE
U
V
FB
CC
0 1 2
FROM P
VID
LTC1706-19
3
LTC1706-19
SENSE
GND
+
C
820 F
4V
X2
OUT
V
1.3V TO 2V
7A
OUT
1706-19 TA01
1

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LTC1706-19 Summary of contents

Page 1

... 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- ...

Page 2

... LTC1706- ABSOLUTE AXI U RATI GS (Note 1) (Voltages Referred to GND Pin) Input Supply Voltage (V ) ..........................– 0. VID Input Pins .............................................– 0. SENSE Pin ...................................................– 0. Pin ..........................................................– 0. Operating Temperature Range LTC1706C-19 .......................................... LTC1706I-19 ...................................... – Junction Temperature ........................................... 110 C Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec) ...

Page 3

... TEMPERATURE ( C) Supply Current vs Temperature 2.0 1.5 1 3.3V CC 0.5 0 – TEMPERATURE ( C) –0.25 1.9 2.0 1706-19 G01 100 1706-19 G03 V = 2.7V CC 100 1706-19 G05 LTC1706-19 Typical Error % vs Temperature 0. 1.3V OUT V = 1.7V 0 OUT OUT – 100 TEMPERATURE ( C) 1706-19 G02 I vs Temperature VID-PULLUP 120 100 80 ...

Page 4

... LTC1706- CTIO S VID2 (Pin 1): 2nd MSB Programming Input. Low = GND, High = V or Float. Grounding VID2 adds 200mV to the CC output sense voltage. VID3 (Pin 2): 1st MSB Programming Input. Low = GND, High = V or Float. Grounding VID3 adds 400mV to the CC output sense voltage. ...

Page 5

... U OPERATIO The LTC1706- precision resistive divider designed specifically for use with an entire family of Linear Technol- ogy Corporation DC/DC switching regulators with 1.19V internal reference and feedback voltages. The LTC1706-19 produces an output voltage ranging from 1. 50mV steps by closing the loop between the output voltage sense and the feedback input of the regulator with the appropriate resistive divider network ...

Page 6

... CC go higher than V without being bootstrapped damaging the input. This allows the LTC1706- logic compatible and operational over a much higher input voltage range (less than the 7V absolute maximum rating). U TYPICAL APPLICATIO S 450mA, Low Noise Monolithic Current Mode Step-Down DC/DC Converter ...

Page 7

... GND 4 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- Information furnished by Linear Technology Corporation is believed to be accurate and reliable. ...

Page 8

... LTC1706-19 U TYPICAL APPLICATIO S High Efficiency 3A SO-8 N-Channel Switching Regulator with Programmable Output VID0 SENSE 8 VID1 LTC1706-19 470pF 1 VID2 2 5 VID3 FB GND 4 6.8k PACKAGE DESCRIPTIO 0.010 – 0.020 45 (0.254 – 0.508) 0.008 – 0.010 0 – 8 TYP (0.203 – 0.254) 0.016 – 0.050 0.406 – ...

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