SP6654EB Datasheet, PDF (3/4 Pages) Sipex Corporation – Evaluation Board Manual

Table 2. SP6654EB BILL OF MATERIALS
Component
L1
CIN
COUT
RVIN
CVIN
RI
RF
CF
U1
Vo = 3.3V
Vo = 1.5V
10uH, CDRH5D28-100, Sumida 10uH, CDRH5D28-100, Sumida
22uF, TDK C3225X5R0J226M
22uF, TDK C3225X5R0J226M
10 Ohm 5%
1uF ceramic X7R SM 0805
261k 1%
825k 1%
22pF ceramic
SP6654EU or SP6654ER
22uF, TDK C3225X5R0J226M
22uF, TDK C3225X5R0J226M
10 Ohm 5%
1uF ceramic X7R SM 0805
261k 1%
226k 1%
22pF ceramic
SP6654EU or SP6654ER
Table 3. SP6654 PIN ASSIGNMENT
Pin
Name
PVin
Vin
PWRGD
D1
Pin Description
Input voltage power pin. Inductor charging current passes
through this pin.
Internal supply voltage. Control circuitry powered from this
pin.
Open drain battery low output – need to pullup to supply
externally. Vout below threshold pulls this node to ground.
Vout above threshold, this node is open.
Digital mode control input. See Table 1 for definition.
Pin
NO.
1
2
3
4
D0 Digital mode control input. See Table 1 for definition.
5
External feedback network input connection. Connect a
FB
resistor from FB to ground and FB to Vout to control the
output voltage. This pin regulates to the internal reference
6
voltage of 0.8V.
Vout
Output voltage sense pin. Used for internal timing and BLON
circuitry.
7
GND Internal ground pin. Control circuitry returns current to this pin. 8
PGND
Power ground pin. Synchronous rectifier current returns
through this pin.
9
LX
Inductor switching node. Inductor tied between this pin and
the output capacitor to create Vout.
10
3