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参数资料
型号： S-8340A25AFT-T2
元件分类： 稳压器
英文描述： 0.1 A SWITCHING CONTROLLER, 690 kHz SWITCHING FREQ-MAX, PDSO8
封装： TSSOP-8
文件页数： 2/53页
文件大小： 855K
代理商： S-8340A25AFT-T2
STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
S-8340/8341 Series
Rev.2.2_00
Seiko Instruments Inc.
10
(3) 300 kHz, Output Voltage Fixed Type (C Type)
Table 7
(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
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-834xC25
34
210
430
A
2
S-834xC35
44
270
520
A
2
S-834xC45
54
350
650
A
2
Current consumption 1
ISS1
VOUT
= VOUT(S) × 0.95,
EXT pin open
S-834xC55
60
440
740
A
2
Current consumption 2
ISS2
VOUT
= VOUT(S) + 0.5 V, EXT pin open
110
185
A
2
Current consumption
at shutdown
ISSS
VOUT
= VOUT(S) × 0.95, VON/OFF = 0 V
3.0
A
2
S-834xC25
34
13
24
mA
S-834xC35
44
17
30
mA
S-834xC45
54
21
34
mA
IEXTH
VEXT
= VOUT(E) 0.2 V
S-834xC55
60
23
37
mA
S-834xC25
34
32
56
mA
S-834xC35
44
42
69
mA
S-834xC45
54
50
78
mA
EXT pin output current
IEXTL
VEXT
= 0.2 V
S-834xC55
60
56
85
mA
Line regulation
VOUT1
VIN
= VOUT(S) × 0.4 to VOUT(S) × 0.6
IOUT
= VOUT(S)/50
VOUT(S)
× 0.5%
VOUT(S)
× 1%
V
1
Load regulation
VOUT2
VIN
= VOUT(S) × 0.6, 10 A ≤ IOUT ≤ VOUT(S)/40
VOUT(S)
× 0.5%
VOUT(S)
× 1%
V
1
Output voltage
temperature coefficient
*2
VOUT
TaVOUT
VIN
= VOUT(S) × 0.6, IOUT = VOUT(S)/50
Ta
= 40 to +85°C
±100
ppm/
°C1
Oscillation frequency
fOSC
VOUT
= VOUT(S) × 0.95
Measure waveform at the EXT pin
255
300
345
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 C type)
PFMDuty VIN
= VOUT(E) 0.1 V, under no load
15
21
31
%
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
A
2
ON/OFF pin input
leakage current
ISL
VOUT
= 6 V, VON/OFF = 0 V
0.1
0.1
A
2
VIN
= VOUT(S) × 0.6, CSS = 4700
pF, IOUT
= VOUT(S)/50 ,
S-8340Cxx
6.0
14.3
28.0
ms
1
Soft-start time
tSS
Measure time until oscillation
occurs at EXT pin.
S-8341Cxx
6.0
17.2
28.0
ms
1
VIN
= VOUT(S) × 0.6,
S-834xC25
34
83
%
1
S-834xC35
44
85
%
1
S-834xC45
54
87
%
1
Efficiency
EFFI
IOUT
= VOUT(S)/50
S-834xC55
60
87
%
1
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