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L99VR02XP bảng dữ liệu(PDF) 29 Page - STMicroelectronics

tên linh kiện L99VR02XP
Giải thích chi tiết về linh kiện  Dual automotive linear voltage regulator with configurable output voltage (2x250 mA current capability)
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L99VR02XP bảng dữ liệu(HTML) 29 Page - STMicroelectronics

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•
“OR” mode (TC_CONF = VS_LDO1): two clusters are linked to each other;
–
If LDO1 is in thermal shutdown, LDO2 also is switched off.
–
If LDO2 is in thermal shutdown, LDO1 keeps the normal activity.
•
”DEFAULT” mode (TC_CONF = GND): only the cluster which reached protection temperature is switched
off;
–
LDO1 and LDO2 are fully independent of each other and monitored by two different thermal clusters.
–
In tracking mode: if LDO1 is in thermal shutdown and TRK_MODE = GND (see the Table 19), LDO2
is untied by LDO1 and keeps the normal activity.
Figure 47. Thermal clusters identification
CURRENT LIMITER
POWER DRIVER
START - UP
VS_LDO1
E N _LDO2
SEL3 _LDO2
SEL2 _LDO2
VO_LDO1
-
+
SEL1 _LDO2
Ishort_LDO2
VS_LDO2
VO_LDO2
OUTPUT
VOLTAGE
SELECTOR
THERMAL
CURRENT LIMITER
VOLTAGE
REFERENCE
POWER DRIVER
START - UP
E N _LDO1
SEL3 _LDO1
SEL2 _LDO1
-
+
SEL1 _LDO1
Ishort_LDO1
LOW VOLTAGE RESET
LOGIC DRIVER
WATCHDOG
ADVANCED THERMAL WARNING
TW _LDO1
Vcw_LDO1
Wi_LDO1
LOW VOLTAGE RESET
TW _LDO2
TC _ CONF
RST_LDO1
RST_LDO2
GND
Vcr_LDO2
Vcr_LDO1
WATCHDOG
Vcw_LDO2
Wi_LDO2
R FD = 75
W
OV Detectio n
on Vo_LDO1
-
-
VOLTAGE
REFERENCE
SHUTDOWN
THERMAL
SHUTDOWN
TRK_MODE
IN_TRK
R FD = 75
W
TRK_STAT
L99VR02XP
Application information
DS14686 - Rev 1
page 29/50



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