LTC1706-19 LINER [Linear Technology], LTC1706-19 Datasheet - Page 6

• Manufacturer Part Number: LTC1706-19
• Description: VID Voltage Programmer
• Manufacturer: LINER [Linear Technology]

LTC1706-19
OPERATIO
VID Input Characteristics
The VID inputs should be driven with a maximum V
0.4V and a minimum V
range is not limited to values below V
diode between V
go higher than V
damaging the input. This allows the LTC1706-19 to be
logic compatible and operational over a much higher input
voltage range (less than the 7V absolute maximum rating).
6
TYPICAL APPLICATIO S
2.7V TO 5.5V
0.1 F
1.3V TO 2V
450mA
V
OUT
**
CC
CC
*
3
5
U
MOTOROLA MBRS130LT3
COILCRAFT D03316-104
and the pull-up resistor, the inputs can
without being bootstrapped to V
V
FB
CC
0
FROM P
7 8 1 2
1 2
VID
IH
LTC1706-19
of 1.6V. However, the VID input
3
450mA, Low Noise Monolithic Current Mode Step-Down DC/DC Converter
SENSE
6
GND
4
U
+
CC
. Because of the
C
820 F
4V
OUT
2
100 H
L1**
CC
IL
D1*
or
of
0.1 F
When a VID input is grounded, there will be a higher
quiescent current flow from V
V
quiescent current is calculated from
N is the number of grounded VID inputs.
V
resistance of 40k . In other words, each VID input has a
typical pull-up current of (V
approximately 68 A for a 3.3V system.
CC
DIODE
N•(V
1
2
3
4
5
6
7
8
through a series diode to the input. This increase in
SSW
NC
BSW
NC
SGND
RUN/SS
LBO
LBI
is typically 0.6V while R
CC
– V
LTC1433
DIODE
V
PWRV
OSENSE
)/R
V
PGND
C
PROG
SV
POR
OSC
I
TH
IN
IN
PULLUP
0.1 F
68 F
20V
16
15
14
13
12
11
10
NC
CC
.
PULLUP
CC
because of a resistor from
1706-19 TA02
– 0.6V)/40k, which is
10k
5.1k
has a typical pull-up
INPUT VOLTAGE
3.5V TO 12V
POWER ON RESET
6800pF
680pF
47pF