參數(shù)資料
型號： S-8340B00AFT-T2-U
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 690 kHz SWITCHING FREQ-MAX, PDSO8
封裝： HALOGEN FREE AND LEAD FREE, TSSOP-8
文件頁數(shù)： 53/55頁
文件大?。?/td> 740K
代理商： S-8340B00AFT-T2-U
STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.4.0_00
S-8340/8341 Series
Seiko Instruments Inc.
7
Electrical Characteristics
(1) 600 kHz, Output Voltage Fixed Type (A Type)
Table 5
(Ta = 25
°C unless otherwise specified)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Measurement
Circuit
Output voltage
*1
VOUT(E)
VIN = VOUT(S) × 0.6,
IOUT = VOUT(S)/50 Ω
VOUT(S)
× 0.98
VOUT(S)
× 1.02
V
1
Input voltage
VIN
6
V
1
Oscillation start voltage
VST
No external parts.
The voltage is applied to VOUT.
0.9
V
2
S-834xA25
34
350
640
μA
2
S-834xA35
44
460
810
μA
2
S-834xA45
54
630
1060
μA
2
Current consumption 1
ISS1
VOUT = VOUT(S) × 0.95,
EXT pin open
S-834xA55
60
810
1250
μA
2
Current consumption 2
ISS2
VOUT = VOUT(S) + 0.5 V, EXT pin open
180
300
μA
2
Current consumption
at shutdown
ISSS
VOUT = VOUT(S) × 0.95, VON/OFF = 0 V
3.0
μA
2
S-834xA25
34
13
24
mA
S-834xA35
44
17
30
mA
S-834xA45
54
21
34
mA
IEXTH
VEXT = VOUT(E) 0.2 V
S-834xA55
60
23
37
mA
S-834xA25
34
32
56
mA
S-834xA35
44
42
69
mA
S-834xA45
54
50
78
mA
EXT pin output current
IEXTL
VEXT = 0.2 V
S-834xA55
60
56
85
mA
Line regulation
ΔVOUT1
VIN = VOUT(S) × 0.4 to VOUT(S) × 0.6
IOUT = VOUT(S)/50 Ω
VOUT(S)
× 0.5%
VOUT(S)
× 1%
V
1
Load regulation
ΔVOUT2
VIN = VOUT(S) × 0.6, 10 μA ≤ IOUT ≤ VOUT(S)/40 Ω
VOUT(S)
× 0.5%
VOUT(S)
× 1%
V
1
Output voltage
temperature coefficient
*2
ΔVOUT
ΔTaVOUT
VIN = VOUT(S) × 0.6, IOUT = VOUT(S)/50 Ω,
Ta
= 40 to +85°C
±100
ppm/
°C1
Oscillation frequency
fOSC
VOUT = VOUT(S) × 0.95
Measure waveform at the EXT pin
510
600
690
kHz
2
Maximum duty ratio
MaxDuty
VIN = VOUT(S) × 0.95
Measure waveform at the EXT pin
73
82
89
%
2
PWM/PFM switching
duty ratio
(S-8341 Series A type)
PFMDuty VIN = VOUT(E) 0.1 V, under no load
19
27
35
%
1
Current limit detection
voltage
VSENSE
VOUT = VOUT(S) × 0.95
Judge oscillation at the EXT pin or oscillation
stop at “L”
90
120
150
mV
2
VSH
VOUT = VOUT(S) × 0.95
Judge oscillation at the EXT pin.
0.8
V
2
ON/OFF pin input voltage
VSL
VOUT = VOUT(S) × 0.95
Judge oscillation stop at the EXT pin.
0.3
V
2
ISH
VOUT = 6 V, VON/OFF = 6 V
0.1
0.1
μA
2
ON/OFF pin input
leakage current
ISL
VOUT = 6 V, VON/OFF = 0 V
0.1
0.1
μA
2
VIN = VOUT(S) × 0.6, CSS = 4700
pF, IOUT = VOUT(S)/50 Ω
S-8340Axx
3.0
6.0
14.0
ms
1
Soft-start time
tSS
Measure time until oscillation
occurs at the EXT pin.
S-8341Axx
3.0
8.0
14.0
ms
1
S-834xA25
34
83
%
1
S-834xA35
44
85
%
1
S-834xA45
54
87
%
1
Efficiency
EFFI
VIN = VOUT(S) × 0.6,
IOUT =VOUT(S)/50 Ω
S-834xA55
60
87
%
1
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