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參數(shù)資料
| 型號(hào)： | PQ1CZ21H2ZZ |
| 廠商： | Sharp Corporation |
| 英文描述： | Low Dissipation Current at OFF-state Chopper Regulator |
| 中文描述： | 低耗散電流在關(guān)態(tài)斬波調(diào)壓 |
| 文件頁(yè)數(shù)： | 7/8頁(yè) |
| 文件大?。?/td> | 77K |
| 代理商： | PQ1CZ21H2ZZ |
PQ1CZ21H2Z
I
Thermal Protection Design
Internal power dissipation(P)of device is generally obtained by the following equation.
I
ON/OFF Control Terminal
1. In the following circuit,when ON/OFF control terminal becomes low by switching transistor T
r
on, output voltage may be turned
OFF and the device becomes stand-by mode. Dissipation current at stand-by mode becomes Max.1
μ
A.
2. ON/OFF control terminal is compatible with LS-TTL. It enables to be directly drive by TTL or C-MOS standard logic
(RCA4000 series). If ON/OFF control terminal is not used, it is recommended to directly connect applicable terminals with input
terminal.
1
2
L
D
5
3
4
PQ1CZ21H2Z
C-MOS or TTL
R
1
R
2
I
O
C
O
C
IN
V
IN
V
O
+
+
Load
5
5
When ambient temperature Ta and power dissipation P
D
(MAX)during operation are determined, use Cu plate which allows the
element to operate within the safety operation area specified by the derating curve. Insufficient radiation gives an unfavorable
influence to the normal operation and reliability of the device.
P=I
SW
(Average.)
×
V
SAT
×
D' + V
IN
(voltage between V
IN
to COM terminal)
×
I
Q
'(consumption current)
Step down type
––––––––––––––
D'(Duty)= T(T
I
SW
(Average)= I
O
(Output current.)
on
V
O
+V
F
V
IN
–
V
SAT
+V
F
Polarity inversion type
––––––––––––––––––––
D'(Duty)= T(T
–
D'
I
SW
(Average)= ––1
×
I
O
(Output current.)
on
|V
O
|+V
F
V
IN
+|V
O
|
–
V
SAT
+V
F
V
F
: Forward voltage of the diode
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PQ1CZ21H2ZZH | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 40V 1.5A 100KHz RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| PQ1CZ31H2ZP | 制造商:Panasonic Industrial Company 功能描述:IC |
| PQ1CZ38M2Z | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:Chopper Regulator built-in 300kHz oscillation circuit |
| PQ1CZ38M2ZPH | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 40V 0.8A 300KHz RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| PQ1CZ38M2ZSERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CHOPPER REGULATOR |
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