S-8351A20MC-J2FT2X Datasheet, PDF (13/51 Pages) Seiko Instruments Inc – SWITCHING REGULATOR CONTROLLER

STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER
Rev.3.0_01
S-8351/8352 Series
(2) S-8352 Series
Item
Output voltage
Input voltage
Operation start voltage
Oscillation start voltage
Current consumption 1
Current consumption 2
Current consumption during
shutdown
(With shutdown function)
EXT pin output current
Line regulation
Load regulation
Output voltage temperature
coefficient
Oscillation frequency
Duty ratio 1
Duty ratio 2
(For A, B, D type)
Symbol
VOUT
VIN
VST1
VST2
ISS1
ISS2
Table 16 (1 / 2)
Condition
−
−
IOUT = 1 mA
No external parts, Voltage applied to VOUT
S-8352x15 to 19
S-8352x20 to 29
VOUT = VOUT(S) × 0.95
S-8352x30 to 39
S-8352x40 to 49
S-8352x50 to 59
S-8352x60 to 65
S-8352x15 to 19
S-8352x20 to 29
VOUT = VOUT(S) + 0.5 V
S-8352x30 to 39
S-8352x40 to 49
S-8352x50 to 59
S-8352x60 to 65
(Ta = 25°C unless otherwise specified)
Min. Typ. Max.
Unit
Measurement
circuit
VOUT(S) VOUT(S) VOUT(S)
× 0.976
× 1.024
V
3
−
−
10
V
3
−
− 0.9
V
3
−
− 0.8
V
4
− 7.4 12.3 μA
4
− 12.0 20.0 μA
4
− 17.8 29.6 μA
4
− 24.7 41.1 μA
4
− 32.7 54.5 μA
4
− 43.0 71.6 μA
4
−
2.3 3.5
μA
4
−
2.5 3.8
μA
4
−
2.7 4.1
μA
4
−
2.9 4.4
μA
4
−
3.1 4.7
μA
4
−
3.3 5.1
μA
4
ISSS
V_{ON/ OFF} = 0 V
−
−
0.5
μA
4
S-8352x15 to 19 − 3.5 − 6.3 −
mA
4
S-8352x20 to 24 − 5.2 − 9.4 −
mA
4
S-8352x25 to 29 − 6.8 − 12.3 −
mA
4
IEXTH
VEXT = VOUT − 0.4 V
S-8352x30 to 39 − 8.2 − 14.9 −
mA
4
S-8352x40 to 49 − 10.7 − 19.4 −
mA
4
S-8352x50 to 59 − 12.5 − 22.8 −
mA
4
S-8352x60 to 65 − 13.9 − 25.2 −
mA
4
S-8352x15 to 19 3.8 6.9 −
mA
4
S-8352x20 to 24 5.6 10.2 −
mA
4
S-8352x25 to 29 7.3 13.3 −
mA
4
IEXTL
VEXT = − 0.4 V
S-8352x30 to 39 8.9 16.2 −
mA
4
S-8352x40 to 49 11.6 21.1 −
mA
4
S-8352x50 to 59 13.7 25.0 −
mA
4
S-8352x60 to 65 15.3 27.8 −
mA
4
ΔVOUT1
VIN = VOUT(S) × 0.4 to × 0.6
−
30 60
mV
3
ΔVOUT2
IOUT = 10 μA to VOUT(S) / 100 × 1.25
−
30 60
mV
3
∆VOUT
∆Ta • VOUT
Ta = − 40°C to + 85°C
− ±50 − ppm / °C
3
fOSC
VOUT = VOUT(S) × 0.95,
Measured waveform at EXT pin
90 100 110 kHz
4
Duty1
VOUT = VOUT(S) × 0.95,
Measured waveform at EXT
70 75 80
%
4
Duty2
Measured waveform at EXT pin at light load −
50
−
%
3
13