參數(shù)資料
型號： S-8328B50MA-EXE-T2
元件分類： 穩(wěn)壓器
英文描述： 0.3 A SWITCHING CONTROLLER, 115 kHz SWITCHING FREQ-MAX, PDSO3
封裝： PLASTIC, SOT-23, 3 PIN
文件頁數(shù)： 56/65頁
文件大小： 759K
代理商： S-8328B50MA-EXE-T2
SMALL PACKAGE PWM/PFM CONTROL STEP-UP SWITCHING REGULATOR
S-8324/8328 Series
Rev. 7.2_10
6
Seiko Instruments Inc.
1-2. S-8324AxxMA, S-8324AxxUA, S-8324DxxMC
(Unless otherwise specified: Ta=25
°C)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Test circuit
Output voltage
VOUT
S-8324x50xx
4.880
5.000
5.120
V
1
S-8324x33xx
3.221
3.300
3.379
S-8324x30xx
2.928
3.000
3.072
S-8324x27xx
2.635
2.700
2.765
S-8324x25xx
2.440
2.500
2.560
S-8324x20xx
1.952
2.000
2.048
Input voltage
VIN
9
Operation start voltage
VST1
IOUT=1 mA
0.9
Oscillation start voltage
VST2
No external parts, voltage applied to VOUT
CONT pulled up to 5 V by 10k
0.8
2
Operation holding voltage
VHLD
IOUT=1 mA, Measured by decreasing VIN
voltage gradually
0.7
1
Input current at no load
IIN
No load
S-8324x50xx
10.5
21.1
A
S-8324x33xx
10.4
20.8
S-8324x30xx
10.4
20.7
S-8324x27xx
10.5
21.1
S-8324x25xx
10.5
21.0
S-8324x20xx
10.8
21.5
Current consumption 1
ISS1
VOUT=output voltage
×0.95
S-8324x50xx
30.2
50.3
2
S-8324x33xx
19.1
31.8
S-8324x30xx
17.2
28.7
S-8324x27xx
15.5
25.9
S-8324x25xx
14.3
23.9
S-8324x20xx
11.6
19.4
Current consumption 2
ISS2
VOUT=output voltage+0.5
S-8324x50xx
3.5
6.9
S-8324x33xx
3.3
6.5
S-8324x30xx
3.2
6.4
S-8324x27xx
3.2
6.4
S-8324x25xx
3.2
6.3
S-8324x20xx
3.1
6.2
Switching current
ISW
VCONT=0.4 V
S-8324x50xx
114
182
mA
S-8324x33xx
78
125
S-8324x30xx
78
125
S-8324x27xx
61
98
S-8324x25xx
61
98
S-8324x20xx
45
71
Switching transistor leak
current
ISWQ
VOUT= VCONT=10 V
1.0
A
Line regulation
VOUT1
VIN= output voltage
×0.4 to ×0.6
30
60
mV
1
Load regulation
VOUT2
IOUT=10
A to IOUT (below) ×1.25
30
60
Output voltage
VOUT/Ta Ta=-40°C to +85°C
S-8324x50xx
±0.25
mV/
°C
temperature
S-8324x33xx
±0.17
coefficient
S-8324x30xx
±0.15
S-8324x27xx
±0.14
S-8324x25xx
±0.13
S-8324x20xx
±0.10
Oscillation frequency
fosc
VOUT=output voltage
×0.95
Measured waveform at CONT pin
42.5
50
57.5
kHz
2
Max duty ratio
MaxDuty
VOUT=output voltage
×0.95
Measured waveform at CONT pin
75
83
90
%
PWM/PFM control switch
duty ratio
PFMDuty
VIN= output voltage -0.1V
No load
515
24
1
Soft start time
tSS
3.0
6.0
12.0
ms
Efficiency
EFFI
S-8324x50xx
87
%1
S-8324x33xx
83
S-8324x30xx
83
S-8324x27xx
79
S-8324x25xx
79
S-8324x20xx
75
External parts used:
-Coil:
CD54 (100
H) of Sumida Corporation
-Diode:
MA720 (Schottky type) of Matsushita Electric Industrial Co., Ltd.
-Capacitor: F93 (16 V, 22
F, tantalum type) of Nichicon Corporation
Applied VIN=output voltage
×0.6, IOUT=output voltage/250
The VDD pin is connected to VOUT pin for VDD/VOUT separate product.
Note 1: The output voltage specified above is the typical value.
Note 2: VDD/VOUT Separate products:
Boot operation is performed from VDD=0.8 V.
However, 2.0 V or more voltage for VDD is recommended to stabilize the output voltage and oscilation frequency.
DISCONTINUED
PRODUCT
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