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UPC2260 Datasheet(PDF) 3 Page - NEC

Part No. UPC2260
Description  LOW DROPOUT VOLTAGE REGULATOR WITH SYSTEM RESET PIN
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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UPC2260 Datasheet(HTML) 3 Page - NEC

 
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Data Sheet G14901EJ2V0DS00
3
µµµµ PC2260
ABSOLUTE MAXIMUM RATINGS (TA = +25
°°°°C, unless otherwise specified.)
Parameter
Symbol
Ratings
Unit
Input Voltage
VIN
−0.3 to +35
V
Reset Pin Applied Voltage
VRST
−0.3 to +35
V
Total Power Dissipation (TC = 25
°C)
PT
20 Note
W
Operating Ambient Temperature
TA
−20 to +85
°C
Operating Junction Temperature
TJ
−20 to +150
°C
Storage Temperature
Tstg
−55 to +150
°C
Thermal Resistance
(Junction to Case)
Rth (J-C)
4
°C/W
Thermal Resistance
(Junction to Ambient Air)
Rth (J-A)
83
°C/W
Note The total loss is limited by an internal circuit. Where TJ > 150
°C, an internal protection circuit cuts off the output.
Caution
Product quality may suffer if the absolute maximum rating is exceeded even momentarily for any
parameter. That is the absolute maximum ratings are rated values at which the product is on the verge
of suffering physical damage, and therefore the product must be used under conditions that ensure
that the absolute maximum ratings are not exceeded.
TYPICAL CONNECTION
1
4
DELAY
CAPACITOR
GND RESET
OUTPUT
INPUT
Backup capacitor
Reset output
(active low)
D
CO
CIN
CDLY
32
5
µ
µ
47 F
0.33
F
CIN :0.1
µ F to 0.47 µF. Determine the capacitance depending on the line between the power supply smoothing circuit
and input pin.
Be sure to connect this capacitor to prevent abnormal oscillation. Use of a capacitor, such as a film capacitor, with
excellent voltage and temperature characteristics is recommended. Note that some laminated ceramic capacitors
have poor temperature and voltage characteristics. When using a laminated ceramic capacitor, the capacitance
must be stable in the voltage and temperature ranges used.
CO : Must be 47
µF or more. Be sure to connect this capacitor to prevent oscillation and to improve transient load
stability.
Connect CIN and CO as close to the IC (within 1 to 2 cm) as possible. When using this product below 0
°C, select an
electrolytic capacitor with low impedance characteristics.
D
: Connect Schottky barrier diode (with a low forward voltage) if the voltage on the OUTPUT pin is lower than that on
the GND pin.


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