參數資料
型號: PQ1CZ1J0000H
廠商: SHARP ELECTRONICS CORP
元件分類: 穩(wěn)壓器
英文描述: 1.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PSSO5
封裝: SC-63, SMT-5
文件頁數: 7/8頁
文件大?。?/td> 74K
代理商: PQ1CZ1J0000H
Chopper Regulators
PQ1CZ1
s ON/OFF Control Terminal
(V)
3.55
(VTHH)
2.25
(VTHL)
1.4
(VTHON)
0
Stand-by mode
OFF-state
Soft start
time
Duty
0%
Duty
DMAX
Step Down Voltage Circuit
ON/OFF
terminal
voltage
1
2
3
1
2
3
In the following circuit,when ON/OFF control terminal t becomes low by switching transistor Tr on, output voltage may
be turned OFF and the device becomes stand-by mode. Dissipation current at stand-by mode becomes Max.400
A.
<Soft start>
When capacitor Cs is attached, output pulse gradually expanded and output voltage will start softly.
<ON/OFF control with soft startup>
For ON/OFF control with capacitor CS, be careful not to destroy a transistor Tr by discharge current from CS, adding a
resistor restricting discharge current of CS.
+
VIN
CIN
CS
CO
VO
R2
R1
Load
D
12
4
3
5
LIO
+
Tr
ON/OFF control signal
In the external area of the safety operation area shown by the derating curve, the overheat protection circuit may operate to
shut-down output. However, please avoid keeping such condition for a long time.
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