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SC1563ISK3.3TRT

P1-P3P4-P6P7-P9P10-P10
POWER MANAGEMENT
1 www.semtech.com
SC1563
Very Low Dropout, Low
Quiescent 500mA Regulator
Revision: January 11, 2006
The SC1563 is a high performance positive voltage
regulator designed for use in applications requiring very
low dropout voltage at up to 500mA. Since it has supe-
rior dropout characteristics compared to regular LDOs, it
can be used to supply 2.5V on motherboards or 2.8V on
peripheral cards from the 3.3V supply with no heatsink.
Additionally, the SC1563 has a shutdown pin to further
reduce power dissipation while shut down. The SC1563
provides excellent regulation over variations in line, load
and temperature.
A wide range of fixed output voltage options are avail-
able. In addition, the output voltage of every device can
be adjusted between 1.2V and 4.8V using external resis-
tors. The SC1563 comes in the space saving 5-pin SOT-
23 package.
350mV dropout @ 500mA
Designed to operate with ceramic capacitors
Adjustable output from 1.2V to 4.8V
Multiple output voltage options (all parts also
adjustable externally using resistors)
Over current and over temperature protection
2µA quiescent current in shutdown
No minimum load current requirement
Low reverse leakage (output to input)
Full industrial temperature range
5-pin SOT-23 surface mount package. Also avail-
able in Lead-free, fully WEEE and RoHS compliant
Personal Digital Assistants
Battery powered systems
Motherboards
Peripheral cards
PCMCIA cards
Internally Preset Output Voltage Externally Set Output Voltage
U1 SC1563IS-X.X
1
2 3
45
SHDN
GND
ADJ
OUTIN
C2
R2
C2
VIN VO (X.XV)
VO
SHDN
C1
SHDN
R1
VIN
C1
U1
SC1563IS-X.X
1
2 3
45
SHDN
GND ADJ
OUTIN
Volts
R2
R2)(R11.200
V
OUT
+
=
Description Features
Applications
Typical Application Circuits
22006 Semtech Corp. www.semtech.com
POWER MANAGEMENT
SC1563
retemaraPlobmySsnoitidnoCniMpyTxaMstinU
NI
egnaRegatloVylppuSV
NI
2.25.6 V
tnerruCtnecseiuQI
Q
V
NI
V3.3=58 051 Aµ
V
NI
V,V5.6=
NDHS
nepO=10.0 00.2 Aµ
TUO
egatloVtuptuO
)1(
V
TUO
V
NI
V=
TUO
I,V7.0+
TUO
Am01=%1-V
TUO
%1+V
)egatloVdexiFlanretnI( %2-%2+
noitalugeReniL
)1(
GER
)ENIL(
V
NI
V(=
TUO
I,V5.5ot)V52.0+
TUO
Am01=1.0 4.0 %
noitalugeRdaoL
)1(
GER
)DAOL(
V
NI
V=
TUO
V7.0+51.0 04.0 %
Unless specified: V
SHDN
= 0V, Adjustable mode (V
ADJ
> V
TH(ADJ)
): V
IN
= 2.2V to 5.5V and I
OUT
= 0A to 500mA,
Fixed mode (V
ADJ
= GND): V
IN
= (V
OUT
+ 0.7V) to 5.5V and I
OUT
= 0A to 500mA. Values in bold apply over full operating temperature range.
retemaraPlobmySmumixaMstinU
egatloVtupnIV
NI
7ot3.0-V
egatloVnwodtuhSV
NDHS
Vot3.0-
NI
V
noitapissiDrewoPP
D
detimiLyllanretnIW
tneibmAotnoitcnuJecnatsiseRlamrehT
)1(
θ
AJ
571W/C°
gnitarepOtneibmAegnaRerutarepmeTT
A
58ot04-C°
gnitarepOnoitcnuJegnaRerutarepmeTT
J
4-051ot0C°
egnaRerutarepmeTegarotST
GTS
051ot56-C°
ces01)gniredloS(erutarepmeTdaeLT
DAEL
003C°
gnitaRDSEV
DSE
2Vk
Absolute Maximum Ratings
Note:
(1) Minimum pad size.
Electrical Characteristics
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not implied.
32006 Semtech Corp. www.semtech.com
POWER MANAGEMENT
SC1563
retemaraPlobmySsnoitidnoCniMpyTxaMstinU
).tnoC(TUO
egatloVtuoporD
)2()1(
V
D
I
TUO
Am2=15Vm
01
I
TUO
Am001=07001Vm
051
I
TUO
Am052=571052Vm
053
I
TUO
Am005=053005Vm
007
timiLtnerruC
I
MIL
5.00.1
A
JDA
egatloVecnerefeR
)1(
V
FER
V
NI
V,V2.2=
JDA
V=
TUO
I,
TUO
Am01=881.1002.1212.1V
671.1422.1
nerruCniPtsujdAt
)3(
I
JDA
V
JDA
V=
FER
56 051 An
dlohserhTniPtsujdA
)4(
V
)JDA(HT
01.0 52.0 04.0 V
NDHS
tnerruCniPnwodtuhSI
NDHS
V
NDHS
V,V0=
NI
V3.3=5.1 0.5 Aµ
dlohserhTniPnwodtuhSV
HI
V
NI
V3.3= 8.1 V
V
LI
V
NI
V3.3= 4.0
noitcetorPerutarepmeTrevO
leveLpirThgiHT
IH
071°C
siseretsyHT
TSYH
01°C
Notes:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) Defined as the input to output differential at which the output voltage drops to 1% below the value measured at
a differential of 0.7V for 2.5V ≤ V
OUT
≤ 3.4V. Not measurable on outputs less than 2.2V due to minimum V
IN
con-
straints. See typical characteristics curves.
(3) Guaranteed by design.
(4) When V
ADJ
exceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from the
error amplifier and connects V
ADJ
instead.
Unless specified: V
SHDN
= 0V, Adjustable mode (V
ADJ
> V
TH(ADJ)
): V
IN
= 2.2V to 5.5V and I
OUT
= 0A to 500mA,
Fixed mode (V
ADJ
= GND): V
IN
= (V
OUT
+ 0.7V) to 5.5V and I
OUT
= 0A to 500mA. Values in bold apply over full operating temperature range.
Electrical Characteristics
P1-P3P4-P6P7-P9P10-P10

SC1563ISK3.3TRT

Mfr. #:
Buy SC1563ISK3.3TRT
Manufacturer:
Semtech
Description:
IC REG LINEAR 3.3V 500MA SOT23-5
Lifecycle:
New from this manufacturer.
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