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L5050STR Datasheet(PDF) 3 Page - STMicroelectronics

Part # L5050STR
Description  Single and dual isolated 5 V low drop linear voltage regulators for automotive application
PDF  25 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5050STR Datasheet(HTML) 3 Page - STMicroelectronics

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Figure 2. Functional block diagram - L5050SD
THERMAL
SHUTDOWN
CURRENT
LIMITER
VOLTAGE
REFERENCE
POWER
DRIVER
START -UP
VS2
EN2
VO2
GND2
+
-
2.5 V
THERMAL
SHUTDOWN
CURRENT
LIMITER
VOLTAGE
REFERENCE
POWER
DRIVER
START -UP
VS1
EN1
VO1
GND1
+
-
2.5 V
Table 2. L5050SD pins description
Pin name
Pin number
Function
GND1
1
Ground reference for regulator 1
Vo1
2
5 V regulated output 1. Block to GND1 with a ceramic capacitor
(≥ 220 nF for regulator stability)
GND2
3
Ground reference for regulator 2
Vo2
4
5 V regulated output 2. Block to GND2 with a ceramic capacitor
(≥ 220 nF for regulator stability)
VS2
5
Supply voltage 2, block directly to GND2 on the IC with a capacitor
En2
6
Enable pin for regulator 2:
high signal to switch the regulator on
VS1
7
Supply voltage 1, block directly to GND1 on the IC with a capacitor.
En1
8
Enable pin for regulator 1:
high signal to switch the regulator on
L5050
Block diagram and pins description
DS13704 - Rev 3
page 3/25



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