Linear Technology LTC3618EUF, Демонстрационное руководство

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dc1726f
DEMO MANUAL DC1726
QUICK START PROCEDURE
Figure 2. Proper Measurement Equipment Setup
Figure 3. Jumper and Terminal Descriptions
Figure 4. Simplified Block Diagram of Demo Board Showing Output Voltages and Tolerances
5V @ 5A
Input Power Supply
(set to 3.3V)
+
-
V
V
V
VTTR
Output
+
-
A
+
-
VDDQ Output
V
+
-
+
-
GND
VTT
Output
+
-
Connection for VTT Sinking Current
Sourcing
R
R
sourcing
= –––––
VTT
I
LOAD
VIN - VTT
I
LOAD
R
sinking
= ––––––––
10W Load
Resistor
VTTR Output
VTT ON/OFF
VTT Power Good
VDDQ Vout Select
VDDQ ON/OFF
VDDQ Power Good
VTT COMP
VDDQ COMP
Ext Sync Input
PHASE Select
Ext REF Input
GND
GND
Tracking Input
MODE Select
VTT Output
+VIN
GND
GND
VDDQ Output
GND
VDDQ
Regulator
±3A
1%
VDDQ
Output
600mV, ±1.3% Ref
FB1 TRACK
/SS
TRACK
Input
EXT
REF
Input
VTTR
±10mA
VTT
Regulator
±3A
JP13
SVIN
VDDQIN
R
R
VDDQ
Program
VDDQ
VTTR
Output
VTT
Output
9775RXWSXW 9''4‡ ±2% VTT output = VTTR ±6mV
VDDQ output = VTRACK ±11mV
P9WRP9
VDDQ output = programmed voltage ±