參數(shù)資料
型號(hào)： L99PD08
廠商： STMICROELECTRONICS
元件分類(lèi)： 電源管理
英文描述： POWER SUPPLY MANAGEMENT CKT, PQFP32
封裝： ROHS COMPLIANT, LQFP-32
文件頁(yè)數(shù)： 25/41頁(yè)
文件大?。?/td> 750K
代理商： L99PD08
L99PD08
SPI
Doc ID 15872 Rev 3
31/41
Setting the ASDT bit to 1 means the automatic shutdown function is switched ON and the
channel is switched OFF after setting the OT_FAULT (over temperature or power limitation)
bit to 1. This can happen with a digital HSD either reaching the thermal shut down (or power
limitation) or detecting ambiguous failure with OT_FAULT.
Note, that the thermal shutdown is detected at 6mA regardless of the current range
After OT_FAULT register is “Read & Cleared” (clear status code, see 6.6), the device
activates the corresponding channel after clear according to setting.
1
The external clock source signal CLK_IN1 is selected for internal generation of
PWM signal for OUTx channel. The PWM period is the received clock signal
divided by 256.
CHx PWM input signal selection for Ox channel
Table 30.
ASDT register, hex05 (RW-Type)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CH7
CH6
CH5
CH4
CH3
CH2
CH1
CH0
CHx 0
Automatic shutdown of thermal cycling is switched off
1
Automatic shutdown of thermal cycling is switched on (default)
Table 31.
DET_DIAG register, hex06 (RW-Type)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CH7
CH6
CH5
CH4
CH3
CH2
CH1
CH0
CHx
0
Automatic detailed diagnosis is disabled.
1
Automatic detailed diagnosis is enabled, switching off is activated when failure in on-
state is detected. The purpose is to have short off-state (27 s typ +/-6us) in order to
have detailed information of the failure. The delay between discriminating pulses is 4 ms
(default).
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