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參數(shù)資料
| 型號： | PQ1PF1 |
| 廠商： | Sharp Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Primary Regulator for Switching Power Supply (50W Class) |
| 中文描述： | 主要規(guī)管的開關(guān)電源（50瓦級） |
| 文件頁數(shù)： | 7/14頁 |
| 文件大?。?/td> | 78K |
| 代理商： | PQ1PF1 |
Primary Regulators
PQ1PF1
I
Description for Each Operation
1. Low voltage mulfunction prevention circuit
This device has a built-in low voltage malfunction prevention circuit to prevent malfuncting when power supply voltage Vcc
becomes as low as starting time. When power supply voltage comes up to operation starting voltageV
CC( ON)
17.0V TYP., IC will
start to operate. When power supply voltage falls short of operation stopping voltageV
CC(OFF)
9.3V TYP., IC will stop operating, and
output is shut down.
Before starting power supplies or after stopping operation, applying current to Vcc terminal is stood for stand-by current I
CC(ST)
, and
it is kept at 100
μ
A TYP. (Vcc=14V)
2. Oscillator
IC has a built-in oscillator, and oscillation frequncy is fixed at 100kHz TYP.
3. CA terminal
CA terminal can be connected to capacitor C
A
, and it enables to perform various functions such as soft start function, overcurrent
protection function, overvoltage protection function, and ON/OFF control function.
3-1 Soft start function
Soft start circuit is shown in Fig.1. When voltage Vcc is supplied, CA terminal voltage V
CA
starts rising, charging a capacitor C
A
with charge current from CA terminal(10
μ
A TYP.). According to rising CA teminal voltage V
CA
, output pulse width becomes
gradually wider, and it may cause soft start.
ON duty D of output pulse width is as follows.
D=0% at V
CA
=0.9V TYP.
D=Dmax=45% at V
CA
=1.8V TYP.
During normal operaion, V
CA
is clamped at 3.6V by the internal circuit of IC.
C
A
CA
3
5
←
10
μ
A
V
CC
3.6V
OSC
F
B
4
PWM
+
-
-
-
Fig.1 Soft Start Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PQ1PF2 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:Primary Regulator for Switching Power Supply (30W Class) |
| PQ1R18 | 功能描述:IC REG LDO 1.8V .15A SOT-23L RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.3V 輸入電壓:2.5 V ~ 5.5 V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.1V @ 200mA 穩(wěn)壓器數(shù)量:2 電流 - 輸出:300mA 電流 - 限制（最?。?350mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-UFQFN 供應(yīng)商設(shè)備封裝:8-MLPQ-UT（1.5x1.5） 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:1358 (CN2011-ZH PDF) 其它名稱:SC560HULCT |
| PQ1R18J0000H | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.8V 240MA RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| PQ1R22 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:Low Output Current, Compact Surface Mount Type Low Power-Loss Voltage Regulators |
| PQ1R23 | 功能描述:IC REG LDO 2.3V .15A SOT-23L RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓撲結(jié)構(gòu):正，固定式 輸出電壓:3.3V 輸入電壓:2.5 V ~ 5.5 V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.1V @ 200mA 穩(wěn)壓器數(shù)量:2 電流 - 輸出:300mA 電流 - 限制（最?。?350mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-UFQFN 供應(yīng)商設(shè)備封裝:8-MLPQ-UT（1.5x1.5） 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:1358 (CN2011-ZH PDF) 其它名稱:SC560HULCT |
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