MAX1945 Maxim Integrated Products, MAX1945 Datasheet - Page 4

• Manufacturer Part Number: MAX1945
• Description: Evaluation Kit
• Manufacturer: Maxim Integrated Products

Table 3. Jumper JU4 Functions
*See the Evaluating Other Output Voltages section.
MAX1945 Evaluation Kit
4
Figure 1. MAX1945 EV Kit Schematic
SHUNT LOCATION
_______________________________________________________________________________________
None*
PGND
1, 2
2, 3
VIN
0.22µF
C4
C1
100µF
8V
VCC
VCC
Connected to GND
Connected to V
R4
10Ω
C5
100pF
C8
1µF
C6
0.1µF
FBSEL PIN
Floating*
180kΩ
0.1µF
0.1µF
R3
C3
D1
C7
10
11
12
13
14
CC
3
5
7
9
1
2
4
6
8
LX
LX
LX
LX
BST
V
IN
IN
IN
IN
V
GND
REF
COMP
DD
CC
MAX1945
Connected to VOUT
Connected to VOUT
VOUT regulates when FB pin is 0.8V*
U1
SYNCOUT
FBSEL
PGND
PGND
PGND
PGND
SYNC
CTL1
CTL2
LX
LX
LX
LX
FB
26
24
22
20
15
25
23
21
19
16
27
17
18
28
FB PIN
SYNCOUT
1.2µH
2
1
3
L1
VCC
JU4
VCC
JU1
R1
0Ω
R2
OPEN
R5
100kΩ
2.5V, resistor R1 = 0Ω
1.8V, resistor R1 = 0Ω
Output voltage set by resistors R1, R2*
VCC
C2
180µF
4V
JU2
R6
100kΩ
MAX1945 EV KIT OUTPUT
2
VCC
JU3
J1
OPEN
R7
100kΩ
1
VOUT
PGND
SYNC
GND