S-8520A20MC-AVFT2X Datasheet, PDF (12/44 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8520/8521 Series
Rev.9.0_01
 Test Circuit
1.
open
VIN
EXT
VOUT
open
______
A ON/OFF _VSS
Figure 5
2.
A VIN
EXT _VOUT
+
______
−
ON/OFF _VSS
Figure 6
3.
0.68 kΩ
2200 pF
VIN
EXT _VOUT
+
______
−
ON/OFF _VSS
+
V
−
Figure 7
12