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MC33283FTB28 Datasheet(PDF) 3 Page - ON Semiconductor

tên linh kiện MC33283FTB28
Nội dung chi tiết  Versatile 6 Regulator Power Management Circuit
tải về  21 Pages
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nhà sản xuất  ONSEMI [ON Semiconductor]
Trang chủ  http://www.onsemi.com
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MC33283
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3
PIN FUNCTION DESCRIPTIONS
Pin #
Pin Name
Input
Output
Function
Description
1
GND
I
Grounds the IC
2
OUT7
O
Output 7 regulator
Output 7 delivers up to 50mA
3
OUT2
O
Output 2 regulator
Output 2 delivers up to 120mA
4
OUT3
O
Output 3 regulator
Output 3 delivers up to 135mA
5
VCC1
I
IC supply voltage
This pin supplies the 2.85/3V LDOs
6
OUT5
O
Output 5 regulator
Output 5 delivers either 2.85V or 4.75V, depending on
the level applied on pin 18
7
GND_CP
I
Charge pump ground
This pin requires proper grounding to keep switching noise at the
lowest level
8
GND
I
Grounds the IC
9
GND
I
Grounds the IC
10
OUT6
O
Output 6 regulator
Output 6 delivers up to 20mA
11
VIN
I
Supplies the 5V reg.
This pin injects the charge−pump output to feed the 5V LDOs
12
BUB
O
Backup battery
buffer output
This pin is able to drive an external transistor to active a backup
battery
13
D1
O
Charge Pump output
D1 delivers a square−wave from the Charge Pump output
14
VS1IN
I
Charge Pump VCC
Supplies the charge pump seperately
15
B1
I
Boost voltage
Part of the charge pump wiring diagram
16
GND
I
Grounds the IC
17
GND
I
Grounds the IC
18
SEL
I
Toggles Out 5
The pin activates Out 5 either as a 4.75V or a 2.85V
19
EN6
I
Activates Out 6
Switches ON or OFF Out 6
20
EN5
I
Activates Out 5
Switches ON or OFF Out 5
21
EN3
I
Activates Out 3
Switches ON or OFF Out 3
22
UVLO2
O
Under voltage detection
Delivers a level low to warn of a low battery condition
23
POR
O
Reset signal
Goes high during the Power−on sequence
24
GND
I
Grounds the IC
25
GND
I
Grounds the IC
26
CBYP
I
Bypass Capacitor
Bypasses the internal bandgap
27
ENRS
I
Reset Enable
A logic high prevents Out 2, 3, 5, 6 and 7 from being switched off
by UVLO2
28
EN2
I
Activates Out 2
Switches ON or OFF Out 2
29
VCC2
I
IC supply voltage
Should be connected to pin 5 for normal use
30
EN7
I
Activates Out 7
Switches ON or OFF Out 7
31
OUT1
O
Output 1 regulator
Output 6 delivers up to 50mA
32
GND
I
Grounds the IC



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