S-8520A20MC-AVFT2X Datasheet, PDF (27/44 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.9.0_01
S-8520/8521 Series
(6) Overload detection time (tpro)-Input voltage (VIN)
30
(f_osc = 60 kHz)
26
22
18
Ta = +85°C
14
Ta = −40°C
10
Ta = +25°C
6
2 4 6 8 10 12 14 16
V_IN [V]
4
(f_osc = 300 kHz)
Ta = +85°C
3
Ta = +25°C
Ta = −40°C
2
8
(f_osc = 180 kHz)
7
6
Ta = +85°C
Ta = −40°C
5
4
Ta = +25°C
3
2
2 4 6 8 10 12 14 16
V_IN [V]
1
2 4 6 8 10 12 14 16
V_IN [V]
______
(7) ON/OFF pin input voltage “H” (VSH)-
Input voltage (VIN)
1.8
1.6
1.4
Ta = −40°C
Ta = +25°C
1.2
1.0
0.8
Ta = +85°C
0.6
0.4 ₂
4
6
8 10 12 14 16
V_IN [V]
______
(8) ON/OFF pin input voltage “L” (VSL)-
Input voltage (VIN)
1.7
1.5
1.3
1.1
0.9
Ta = −40°C
Ta = +25°C
0.7
0.5
Ta = +85°C
0.3
2 4 6 8 10 12 14 16
V_IN [V]
27