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參數(shù)資料
| 型號： | LA5681FN |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 520 kHz SWITCHING FREQ-MAX, QCC48 |
| 封裝： | 7 X 7 MM, VQFN-48 |
| 文件頁數(shù)： | 7/19頁 |
| 文件大?。?/td> | 308K |
| 代理商： | LA5681FN |
LA5681FN
No.A0374-15/19
STBY and CTL pins
STBY and CTL pins operate in the HIGH active state.
There is no ESD protection Di connected between VCC and STBY lines.
Therefore, there is no magnitude relationship between STBY and CTL voltages and the VCC voltage.
In the equivalent circuit (the figure below), it is necessary to keep application of the voltage to VCC so as to activate the
ON/OFF control. (In the case of application with specification (two dry cells (1.5V to 3.2V) in 9.1 Sample application
circuit 1, the voltage is applied from the VBATT pin via L and Schottky diode when STBY and CTL pins are LOW.)
STBY and CTL pin equivalent circuit
SCP Pin
If of the FB1 to FB6 outputs goes to the high level due to the load being shorted, the SCP pin starts a charging operation
and the protection circuit will operate if the shorted state is not resolved during the period tSCP. (If the protection
circuit operates, all outputs are turned off.) If the application does not use this protection circuit, the SCP pin must be
shorted to ground with a line that is as short as possible.
Charge of SCP
tSCP =
CSCP × VSCP
ISCP
[s]
STBY and
CTL pins
ESD
protection Di
ON/OFF control
L
SBD
V
CC
line
V
CC
pin
Voltage applied to V
CC
pin via L and diode
VBATT pin
OUT6 pin
V
O
6
To ON/OFF 6
To IN6
-
SCP[
V
]
Charge
SCP ON
1.25[V]
Charge at lscp
t
SCP
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