SP6652EB Datasheet, PDF (2/4 Pages) Sipex Corporation – Evaluation Board Manual

USING THE EVALUATION BOARD
1) Powering up the SP6652 Circuit & Programming the UVLO threshold
The SP6652 Evaluation Board can be powered from a single Li-Ion battery or a +2.7 to
+5.0V power supply. Connect with short leads directly to the “Vin” and “Gnd” posts.
Note the SP6652 will remain in “shutdown” until SD pin Jumper J1 is applied to the VIN
position pin 1 to 2.
2) VOUT PROGRAMMING
The SP6652 requires 2 feedback resistors to control the output voltage. Connect the
appropriate resistors RF and RI (Table 2) from pin 3 SP6652 FB to Vout and to the
GND.
For Vout different from that shown in the schematic, use equation:
RF
=
 ^Vout
 ^0.80
−
1

•
RI
SP6652EB BILL OF MATERIALS
Component
Vo = 3.3V
L1
CIN
COUT
CVIN
Cc
RVIN
RI
RF
Rz
U1
4.7uH, W urth Elektronik 744042004, 0.07ohm, 1.7A, 4.8x4.8x1.8mm
10uF, TDK C2012X5R0J106M, 0.005ohm, 6.3V, X5R, 0805
10uF, TDK C2012X5R0J106M, 0.005ohm, 6.3V, X5R, 0805
1uF, TDK C1608X5R0J105M, 0.03ohm, .3V, X5R, 0603
10nF ceramic, 0603
10 Ohm 5%, 0603
200k 1%, 0603
634k 1%, 0603
4.02k 1%, 0603
SP6652EU, 10 pin uSOIC
2