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SP6231 Datasheet(PDF) 3 Page - Sipex Corporation

Part # SP6231
Description  500mA, 3.3V Linear Regulator with Auxiliary Backup
PDF  10 Pages
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP6231 Datasheet(HTML) 3 Page - Sipex Corporation

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Date: 5/25/04
SP6231 500mA, 3.3V Linear Regulator
© Copyright 2004 Sipex Corporation
8 Pin NSOIC
6 Pin DFN
PIN NAME
DESCRIPTION
VSENSE
Kelvin connection with 3.3V feedback. Always tiethis pin to
1
4
the point of regulation
2
5
VIN
Main 5V input.
3
6
VOUT
VOUT = 3.3V when VIN > 4.5V; VOUT = VAUX when VIN ≤ 4.4V
4
1
VAUX
3.3V auxiliary backup supply that is switched in through an
internal PMOS when VIN drops below 4.4V typically.
5-8
3
GND
6 pin MLP is grounded.
-
2
NC
No connect
FUNCTIONAL DIAGRAM
Bandgap
Reference
GND
VAUX
VIN
VIN
VOUT
VSENSE
(Kelvin tied to VOUT)
GND
R4
+
_
VREF
VREF
Current
Limit
0.8A
Thermal
Shutdown
165°C
R1
R2
ENABLE
100mV
Hysteresis
+3.3V VAUX
M2
M1
Control Logic
R3
Current
Limit
1.0A
-
+
VREF
ENABLE
LDO
PIN DESCRIPTION



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