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參數(shù)資料
| 型號： | S-8340A25AFT-T2 |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.1 A SWITCHING CONTROLLER, 690 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | TSSOP-8 |
| 文件頁數(shù)： | 53/53頁 |
| 文件大?。?/td> | 855K |
| 代理商： | S-8340A25AFT-T2 |
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STEP-UP, 600 kHz, PWM CONTROL OR PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
Rev.2.2_00
S-8340/8341 Series
Seiko Instruments Inc.
9
External parts
Coil :
Sumida Corporation CD54 (10
H)
Diode :
Matsushita Electronic Industrial Co., Ltd. MA735 (Schottky type)
Capacitor :
Nichicon Corporation F93 (16 V, 47
F, tantalum type)
Transistor :
Sanyo Electric Co., Ltd. 2SD1628G
Base resistor (Rb) :
1.0 k
Base capacitor (Cb) : 2200 pF (ceramic type)
CVREF :
0.01
F
CSS :
4700 pF
RFB1 :
300 k
RFB2 :
100 k
CFB :
50 pF
The ON/OFF pin is connected to the VOUT pin unless otherwise specified.
Connect the SENSE pin to the VSS pin.
*1. VOUT(E) : Actual output voltage value : Output voltage value when IOUT
= 80 mA and VIN = 2.4 V is applied.
The Typ. value (set output voltage value) is 1 +
[V]
*2. The change of output voltage with temperature [mV/
°C] is calculated from the following formula. However, the
temperature change rates for RFB1 and RFB2 are assumed to be the same.
= (1 +
)
VOUT
TaVOUT
VOUT
Ta
RFB1
RFB2
[mV/
°C]
×
[ppm/
°C] ÷ 1000
(Change of output voltage
(Set output
(Output voltage temperature
with temperature)
voltage value)
coefficient)
Caution The S-8340/8341 Series steps up from VDD = 0.9 V. However, 2.5 V or more for VDD is recommended to
stabilize the output voltage and oscillation frequency. If VDD is taken from VIN or other power sources,
instead of VOUT, VDD should be 2.5 V or more. However, if VDD is other than 4.0 V, note that the output
voltage accuracy of
±2.0% is not guaranteed due to dependency of output voltage on VDD. In particular,
accuracy of output voltage is degraded significantly when the VDD voltage is 6.0 V or more. Therefore, do
not use this IC when the VDD voltage is 6.0 V or more. If VDD of 2.5 V or more is applied, increase power
supply so that VDD becomes 2.5 V or more within the soft-start time (3.0 ms).
300 k
100 k
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| S-8340A25AFT-T2-G | 功能描述:DC/DC 開關控制器 2.5V Step-Up 2.0% RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| S-8340A30AFT-T2 | 功能描述:DC/DC 開關控制器 3.0V Step-Up 2.0% RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| S-8340A30AFT-T2-G | 功能描述:DC/DC 開關控制器 3.0V Step-Up 2.0% RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| S-8340A33AFT-T2 | 功能描述:DC/DC 開關控制器 3.3V Step-Up 2.0% RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| S-8340A33AFT-T2-G | 功能描述:DC/DC 開關控制器 3.3V Step-Up 2.0% RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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