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L9952XP Datasheet(PDF) 26 Page - STMicroelectronics

Part # L9952XP
Description  Power management system IC
PDF  68 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9952XP Datasheet(HTML) 26 Page - STMicroelectronics

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Protection and diagnosis
L9952GXP
26/68
Doc ID 13518 Rev 5
Figure 8.
Protection and diagnosis
Active
Mode
Standby Modes
(during cyclic sense )
Vs Lockout
All outputs: off
UV bit set (D1 SR1)
Auto-restart if selected by SPI
Vs Lockout
All outputs: high Impedance
OV Bit set (D0 SR1)
Auto-restart if selected by SPI
Vs Overvoltage
Temperature
Warning
‚Temperature Warning'-
Bit set
(D2 SR1)
TSD1
All outputs except V 1: off
‚TSD 1'-Bit is set(D3 SR1)
Tj > 140°C
SPI command: ‚CLR’
(D21 CR1)
OR
Power-on reset
TSD2
All outputs: off
V1: off for 1 sec
‚TSD2-bit is set (D4 SR1)
Tj > 155°C
Vbatstdby
All outputs incl V 2: off
8x TSD2
(each TSD2
within 1 min)
SPI command: ‚CLR’
(D21 CR1)
OR
Autorestart activated
(D4 CR2)
SPI command: ‚CLR’
(D21 CR1)
OR
Autorestart activated
(D4 CR2)
Vs Undervoltage
Wake-up event
Power-on reset
SPI command: ‚CLR’
(D21 CR1)
OR
Power-on reset
Tj > 130°C
V1 off for
200ms
8 successive watchdog
failures
7 additional watchdog failures
in sequence
Vbatstdby
mode
T > 1sec



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