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)： 5/55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.
13
(4) 300 kHz, Output Voltage External Setting Type (D Type)
Table 8
(Ta = 25
°C unless otherwise specified)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Measurement
Circuit
Output voltage
*1
VOUT(E)
VIN = 2.4 V, IOUT = 80 mA
3.920
4.000
4.080
V
3
FB pin voltage
VFB
VIN = 2.4 V, IOUT = 80 mA
0.980
1.000
1.020
V
3
Input voltage
VIN
6
V
3
Oscillation start voltage
VST2
No external parts.
The voltage is applied to VDD.
0.9
V
4
Current consumption 1
ISS1
VOUT = 3.8 V
255
460
μA
4
Current consumption 2
ISS2
VOUT = 4.5 V
110
185
μA
4
Current consumption
at shutdown
ISSS
VOUT = 3.8 V, VON/OFF = 0 V
3.0
μA
4
IEXTH
VEXT = VOUT(E) 0.2 V
19
30
mA
EXT pin output current
IEXTL
VEXT = 0.2 V
46
69
mA
Line regulation
ΔVOUT1
1.6 V
≤ VIN ≤ 2.4 V, IOUT = 80 mA
20
40
mV
3
Load regulation
ΔVOUT2
VIN = 2.4 V, 10 μA ≤ IOUT ≤ 100 mA
20
40
mV
3
Output voltage
temperature coefficient
*2
ΔVOUT
ΔTaVOUT
VIN = 2.4 V, IOUT = 80 mA, Ta = 40 to +85°C
±100
ppm/°C
3
Oscillation frequency
fOSC
VOUT = 3.8 V, Measure waveform at the EXT pin
255
300
345
kHz
4
Maximum duty ratio
MaxDuty
VIN = 3.8 V, Measure waveform at the EXT pin
73
82
89
%
4
PWM/PFM switching
duty ratio
(S-8341 Series D type)
PFMDuty VIN = VOUT(E) 0.1 V, Under no load
15
21
31
%
3
Current limit detection
voltage
VSENSE
VOUT = 3.8 V
Judge oscillation at the EXT pin or oscillation
stop at “L”
90
120
150
mV
4
FB pin input current
IFB
VOUT = 6 V, VFB = 1.5 V
50
50
nA
4
VSH
VOUT = 3.8 V
Judge oscillation at the EXT pin.
0.8
V
4
ON/OFF pin input voltage
VSL
VOUT = 3.8 V
Judge oscillation stop at the EXT pin.
0.3
V
4
ISH
VOUT = 6 V, VON/OFF = 6 V
0.1
0.1
μA
4
ON/OFF pin input
leakage current
ISL
VOUT = 6 V, VON/OFF = 0 V
0.1
0.1
μA
4
VIN = 2.4 V,
CSS = 4700 pF,
S-8340D00
6.0
14.3
28.0
ms
3
IOUT = 80 mA,
Soft-start time
tSS
Measure time until oscillation
occurs at the EXT pin.
S-8341D00
6.0
17.2
28.0
ms
3
Efficiency
EFFI
VIN = 2.4 V, IOUT = 80 mA
85
%
3
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