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L9952GXP データシート(PDF) 14 Page - STMicroelectronics

部品番号 L9952GXP
部品情報  Power management system IC
PDF  68 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9952GXP データシート(HTML) 14 Page - STMicroelectronics

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Description
L9952GXP
14/68
Doc ID 13518 Rev 5
2.4
Functional overview (truth table)
Table 4.
Functional overview (truth table)
Function
Comments
Operating modes
Active mode
V1-standby
static mode
(cyclic sense)
VBAT-standby
static mode
(cyclic sense)
2.3.1
Voltage-regulator, V1
VOUT= 5V
On
On (1)
1.
Supply the processor in low current mode
Off
2.3.2
Voltage-regulator, V2
VOUT= 5V
On / Off (2)
2.
Only active when selected via SPI
On (2) / Off
On (2) / Off
2.3.3
Reset-generator
On
On
Off
2.3.4
Window watchdog
V1 monitor
On
Off if
(I_V1 < ICMP
and ICMP=0)
or ICMP = 1
Off
2.3.5
Wake up
Off (3)
3.
Input Status can be read by SPI (Status Register 0); Inputs should be configured for static sense (Control
Register 2)
Active (4)
Active (4)
4.
Unless disabled by SPI
2.3.6
HS-cyclic supply
Oscillator
timebase
On / Off
On (2) / Off
On (2) / Off
2.3.7
Relay driver
On
Off
Off
2.3.8
Operational amplifiers
On
Off
Off
2.3.9
LIN line driver
LIN 2.1
On
Off
Off
2.3.10
LIN line receiver
On
On
On
2.3.11
FSO
Fail-safe
output
Hi – no error
Lo – WD or V1
fail
Hi – no error
Lo – WD or V1
fail (5)
5.
Watchdog is active in V1 standby mode, until I(V1) is below ICMP current threshold
Lo -> because
V1= off
2.3.12
Oscillator
On
(6)
6.
Activation = ON if cyclic sense is selected
(6)
2.3.13
Vs-Monitor
On
(7)
7.
Cyclic activation = pulsed ON during cyclic sense
(7)



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