S8520 Datasheet, PDF (25/44 Pages) Seiko Instruments Inc – STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-DOWN, PWM CONTROL or PWM / PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.9.0_01
S-8520/8521 Series
 Characteristics (Typical Data)
1. Examples of major parameters characteristics
(1) Current consumption (ISS1)-Input voltage (VIN)
20
(f_osc = 60 kHz)
15
Ta = +25°C
10
Ta = +85°C
5
Ta = −40°C
02
4
6
8 10 12 14 16
V_IN [V]
60
(f_osc = 300 kHz)
50
40
Ta = +85°C
30
20
Ta = +25°C
Ta = −40°C
10
02
4
6
8 10 12 14 16
V_IN [V]
(2) Oscillation frequency (fosc)-Input voltage (VIN)
80
(f_osc = 60 kHz)
75
70
65
Ta = +25°C
60
Ta = +85°C
55
50
Ta = −40°C
45
40 ₂
4
6
8 10 12 14 16
V_IN [V]
360
(f_osc = 300 kHz)
340
320
300
Ta = +25°C
280
Ta = −40°C
260
Ta = +85°C
240
2 4 6 8 10 12 14 16
V_IN [V]
40
(f_osc = 180 kHz)
30
Ta = +25°C
20
Ta = +85°C
Ta = −40°C
10
02
4
6
8 10 12 14 16
V_IN [V]
220
(f_osc = 180 kHz)
210
200
190
180
Ta = +25°C
170
160
Ta = +85°C
150
140 ₂
4
6
Ta = −40°C
8 10 12 14 16
V_IN [V]
25