參數(shù)資料
型號(hào)： L9952GXP
廠商： STMICROELECTRONICS
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36
封裝： LEAD FREE, SSO-36
文件頁(yè)數(shù)： 6/68頁(yè)
文件大?。?/td> 859K
代理商： L9952GXP
Description
L9952GXP
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
2.3.3
Reset-generator
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)
4.
Unless disabled by SPI
2.3.6
HS-cyclic supply
Oscillator
timebase
On / Off
On (2) / Off
2.3.7
Relay driver
On
Off
2.3.8
Operational amplifiers
On
Off
2.3.9
LIN line driver
LIN 2.1
On
Off
2.3.10
LIN line receiver
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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