S-8340A25AFT-T2-X Datasheet, PDF (28/55 Pages) Seiko Instruments Inc – SWITCHABLE SWITCHING REGULATOR CONTROLLER

STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8340/8341 Series
Rev.4.0_01
(5) EXT Pin Output Current “H” (IEXTH) vs.
Supply Voltage (VDD)
S-8340A33A (fOSC : 600 kHz ) / S-8340C33A (fOSC : 300 kHz)
−60
−50
25°C
−40
Ta = −40°C
−30
−20
−10
85°C
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
(7) Soft-Start Time (tSS) vs. Supply Voltage (VDD)
S-8340A33A (f_OSC : 600 kHz)
20
Ta = −40°C
15
10
5
25°C
0
85°C
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
(8) ON/OFF Pin Input Voltage “H” (VSH) vs. Supply
Voltage (VDD)
S-8340A33A (f_OSC : 600 kH z) / S-8340C 33A (f_OSC : 300 kHz )
1.0
0.8
25°C
85°C
0.6
0.4
Ta = −40°C
0.2
0.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
(10) Output Voltage (VOUT) vs. Supply Voltage (VDD)
S-8340A25A (f_OSC : 600 kHz) / S-8340C25A (f_OSC : 300 kHz)
2.54
2.52
25°C
85°C
2.50
2.48
2.46
2.44
Ta = −40°C
2.42
2.40
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
28
(6) EXT Pin Output Current “L” (IEXTL) vs.
Supply Voltage (VDD)
S-8340A33A (fOSC : 600 kHz ) / S-8340C33A (fOSC : 300 kHz)
140
120
Ta = −40°C
100
80
60
40
20
25°C
85°C
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
S-8340C33A (f_OSC : 300 kHz)
40
Ta = −40°C
30
20
10
25°C
85°C
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
(9) ON/OFF Pin Input Voltage “L” (VSL) vs. Supply
Voltage (VDD)
S-8340A33A (f_OSC : 600 kHz) / S-8340C33A (f_OSC : 300 kHz)
1.0
0.8
25°C
85°C
0.6
0.4
Ta = −40°C
0.2
0.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)
S-8340A33A (fOSC : 600 kHz ) / S-8340C33A (fOSC : 300 kHz)
3.34
3.32
25°C
85°C
3.30
3.28
3.26
3.24
3.22
Ta = −40°C
3.20
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
VDD (V)