参数资料
型号: L9952GXPTR
厂商: STMICROELECTRONICS
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36
封装: LEAD FREE, SSO-36
文件页数: 7/68页
文件大小: 859K
代理商: L9952GXPTR
L9952GXP
Description
Doc ID 13518 Rev 5
Figure 3.
Operating modes, main states
Active
Mode
V1: on
Reset Generator: active
Watchdog: active
Fail Safe Out: active
V1 Standby
Mode
V1: on
Reset Generator: active
Watchdog:
OFF (if Iv1<Icmp or ICMP = 1)
Fail Safe Out: active
Vbat Standby
Mode
V1: off
V2: according to SPI settings
Reset Generator: off (Nreset=low)
Watchdog: off
Fail Safe Out: low
HSD, LSD: Off
Wake-up
Event
Wake-up
Event
SPI command: Go Vcc’
(D21 CR0)
Vbat startup
All registers
cleared to 0',
Cold start bit (D19, SR0)
set to 1'
Vs > Vpor
Thermal Shutdown TSD2
OR IV1 > 1mA AND ICMP = 0 AND 15 x WD fail
Flash Mode
Watchdog: OFF
Vpwm2>9V
Note 1
Vpwm2>9V
Vpwm2<7V
Vpwm2>9V
Note 1
SPI command: Go Vbat’ (D20 CR0)
OR
Thermal Shutdown
OR
V1 fail (V1 < 2,5V for 4ms after POR)
=> short to GND
Or
15 x WD Failure
Note 1: only if internal oscillator is running
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