S-8351A50MC-J3JT2G Datasheet, PDF (11/51 Pages) Seiko Instruments Inc – STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER

STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING REGULATOR / SWITCHING REGULATOR CONTROLLER
Rev.3.0_00
S-8351/8352 Series
„ Electrical Characteristics
(1) S-8351 Series
Item
Output voltage
Input voltage
Operation start voltage
Oscillation start voltage
Input current during no- load
Current consumption 1
Current consumption 2
Current consumption during
shutdown
(With shutdown function)
Switching current
Switching transistor leakage
current
CONT pin limit voltage
Line regulation
Load regulation
Output voltage temperature
coefficient
Oscillation frequency
Duty ratio 1
Duty ratio 2
(For A, B, D type)
Symbol
V_OUT
V_IN
V_ST1
V_ST2
I_IN
I_SS1
I_SS2
Table 15 (1 / 2)
Condition
−
−
I_OUT = 1 mA
No external parts, Voltage applied to V_OUT,
CONT pin pulled up to V_OUT with 300 Ω
resistor
S-8351x15 to 29
I_OUT = 0 mA
S-8351x30 to 49
S-8351x50 to 65
S-8351x15 to 19
S-8351x20 to 29
V_OUT = V_OUT(S) × 0.95
S-8351x30 to 39
S-8351x40 to 49
S-8351x50 to 59
S-8351x60 to 65
S-8351x15 to 19
S-8351x20 to 29
V_OUT = V_OUT(S) + 0.5 V
S-8351x30 to 39
S-8351x40 to 49
S-8351x50 to 59
S-8351x60 to 65
(Ta = 25°C unless otherwise specified)
Min. Typ. Max.
Unit
Measurement
circuit
V_OUT(S) V_OUT(S) V_OUT(S)
× 0.976
× 1.024
V
1
−
− 10
V
1
−
− 0.9
V
1
−
− 0.8
V
2
− 8.5 −
μA
1
− 9.0 −
μA
1
− 9.5 −
μA
1
− 9.6 16.0 μA
2
− 15.7 26.2 μA
2
− 23.2 38.6 μA
2
− 32.0 53.3 μA
2
− 42.1 70.2 μA
2
− 54.9 91.5 μA
2
− 2.3 3.5 μA
2
− 2.5 3.8 μA
2
− 2.7 4.1 μA
2
− 2.9 4.4 μA
2
− 3.1 4.7 μA
2
− 3.3 5.1 μA
2
I_SSS
V_{ON/ OFF} = 0 V
−
− 0.5 μA
2
S-8351x15 to 19 50.2 91.2 −
mA
2
S-8351x20 to 24 65.0 118.2 −
mA
2
S-8351x25 to 29 78.5 142.7 −
mA
2
I_SW
V_CONT = 0.4 V
S-8351x30 to 39 90.7 164.8 −
mA
2
S-8351x40 to 49 110.9 201.6 −
mA
2
S-8351x50 to 59 125.7 228.6 −
mA
2
S-8351x60 to 65 135.2 245.8 −
mA
2
I_SWQ
No external parts, V_CONT = V_OUT = 10 V,
V_{ON/ OFF} = 0 V
−
− 0.5 μA
2
V_CONTLMT
Apply to CONT pin, Confirm oscillation stop − 0.9 −
V
2
ΔV_OUT1
V_IN = V_OUT(S) × 0.4 to × 0.6
− 30 60 mV
1
ΔV_OUT2
I_OUT = 10 μA to V_OUT(S) / 250 × 1.25
− 30 60 mV
1
ΔVOUT
Ta = − 40°C to + 85°C
ΔTa • VOUT
− ±50 − ppm / °C
1
f_OSC
V_OUT = V_OUT(S) × 0.95,
Measured waveform at CONT pin
90 100 110 kHz
2
Duty1
V_OUT = V_OUT(S) × 0.95,
Measured waveform at CONT pin
70 75 80
%
2
Duty2
Measured waveform at CONT pin at light load − 50 −
%
1
Seiko Instruments Inc.
11