LTC1706-61 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1706-61' PDF : 8 Pages View PDF
LTC1706-61
PIN FUNCTIONS
PIN
NAME
1
VID0
2
VID1
3
VID2
4
VID3
5
VCC
6
SENSE
7
VID4
8
NC
9
GND
10
FB
DESCRIPTION
LSB Programmable Input
4th MSB Programmable Input
3rd MSB Programmable Input
2nd MSB Programmable Input
Power Supply
Regulator Output Voltage
1st MSB Programmable Input
Ground
0.6V Feedback Input
NOMINAL (V)
MIN TYP MAX
0
VCC
0
VCC
0
VCC
0
VCC
2.7
5.5
0.8
1.55
0
VCC
0
0
0.6
1.5
ABSOLUTE MAX (V)
MIN MAX
– 0.3
7
– 0.3
7
– 0.3
7
– 0.3
7
– 0.3
7
– 0.3
7
– 0.3
7
– 0.3
7
– 0.3
7
BLOCK DIAGRA
VCC
VID0 1
40k
VCC
VID1 2
40k
VCC
VID2 3
40k
VCC
VCC
5
SWITCH
CONTROL
LOGIC
VCC
6 SENSE
RFB1
10 FB
RFB2
9 GND
1706-61 BD
40k
VID3 4
40k
VID4 7
U
OPERATIO
The LTC1706-61 is a precision resistive divider designed
specifically for use with an entire family of Linear
Technology Corporation DC/DC switching regulators with
0.6V internal reference and feedback voltage. The
LTC1706-61 produces an output voltage ranging from
0.8V to 1.55V in 25mV steps by closing the loop between
the output voltage sense and the feedback input of the
regulator with the appropriate resistive divider network.
4
The “top” feedback resistor, RFB1, connected between
SENSE and FB, is typically 10k and is not modified by the
state of the VID program inputs.
The “bottom” feedback resistor, RFB2, however, is modi-
fied by the five VID inputs and is precisely ratioed to RFB1.
170661f
Share Link: 
