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SC1565IST25TRT

P1-P3P4-P6P7-P9P10-P12P13-P14
1 www.semtech.com
SC1565
Very Low Dropout
1.5 Amp Regulator With Enable
POWER MANAGEMENT
Revision: November 25, 2009
The SC1565 is a high performance positive voltage
regulator designed for use in applications requiring very
low dropout voltage at up to 1.5 Amps. Since it has
superior 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 thus
allowing the elimination of costly heatsinks. Additionally,
the 5-lead TO-220/TO-263 and SO-8 versions have an
enable pin to further reduce power dissipation while shut
down. The SC1565 provides excellent regulation over
variations in line, load and temperature.
The SC1565 is available in SO-8, 3-lead SOT-223, 3 and
5 lead TO-220 and 3 and 5 lead TO-263 packages. Three
lead packages are available with 1.8V and 2.5V fixed
output options only. The SO-8, TO-220-5 and TO-263-5
are available with 1.8V and 2.5V internally preset
outputs that are also adjustable using external resistors.
350mV dropout @ 1.5A
Adjustable output from 1.2V to 4.8V
(1)
2.5V and 1.8V options (adjustable externally
using resistors)
(1)
Over current and over temperature protection
Enable pin
(1)
10µA quiescent current in shutdown
(1)
Low reverse leakage (output to input)
Surface mount and through-hole packages
Full industrial temperature range
TO-220, TO-263, SOT-223 and SO-8 Packages
Note:
(1) SO-8, TO-220-5 and TO-263-5 packages only.
Battery powered systems
Motherboards
Peripheral cards
Network cards
Set Top Boxes
Medical Equipment
Notebook Computers
VIN
VO
ENABLE
U1
SC1565IS-X.X
1
2
3
4 5
6
7
8
EN
VIN
VO
ADJ GND
GND
GND
GND
C1
C2
VIN VO
C2
C1
U1
SC1565IT-X.X
1
2
3
VIN
GND
VO
Notes:
(1) Maximum VO setpoint for 1.8V parts = 5.4V.
(2) This device is designed to operate with ceramic input and output capacitors.
VIN
VO
ENABLE
U1
SC1565IS-X.X
1
2
3
4 5
6
7
8
EN
VIN
VO
ADJ GND
GND
GND
GND
C1
C2
R1
R2
Volts
R2
R2)(R11.200
VO
+
=
VIN
ENABLE
VO
C1
C2
R1
R2
U1
SC1565I5T-X.X
2
1
3
5
4
VIN
EN
GND
ADJ
VO
Description Features
Applications
Typical Application Circuits
Volts
R2
R2)(R11.200
VO
+
=
22005 Semtech Corp. www.semtech.com
SC1565
POWER MANAGEMENT
retemaraP lobmySxaMstinU
egatloVtupnI V
NI
7V
noitapissiDrewoP P
D
detimiLyllanretnIW
tneibmAotnoitcnuJecnatsiseRlamrehT
8-OS
)1(
322-TOS
X-022-OT
X-362-OT
θ
AJ
56
36
05
06
W/C°
esaCotnoitcnuJecnatsiseRlamrehT
8-OS
322-TOS
X-362-OT,X-022-OT
θ
CJ
93
72
3
W/C°
egnaRerutarepmeTtneibmAgnitarepO T
A
58+ot04-C°
egnaRerutarepmeTnoitcnuJgnitarepO T
J
051+ot04-C°
egnaRerutarepmeTegarotS T
GTS
051+ot56-C°
.ceS01)gniredloS(erutarepmeTdaeL T
DAEL
003C°
)ledoMydoBnamuH(gnitaRDSE V
DSE
4Vk
Note: (1) 1 square inch of FR-4, double sided, 1 oz. minimum copper weight.
retemaraPlobmySsnoitidnoCtseTniMpyTxaMstinU
NIV
egnaRegatloVylppuSV
NI
2.25.5 V
tnerruCtnecseiuQI
Q
V
NI
V3.3=57.0 57.1 Am
V
NI
V,V5.5=
NE
V0=01 53 Aµ
OV
egatloVtuptuO
)1(
V
O
V
NI
V=
O
I,V7.0+
O
Am01=%1-V
O
%1+V
)egatloVdexiFlanretnI(
%2-%2+
noitalugeReniL
)1(
GER
)ENIL(
V
NI
V(=
O
I,V5.5ot)V52.0+
TUO
Am01=530.0 3.0 %
noitalugeRdaoL
)1(
GER
)DAOL(
V
NI
V=
O
V7.0+2.0 4.0 %
egatloVtuoporD
)2()1(
V
D
I
O
Am01=5.201Vm
02
I
O
Am005=09003Vm
004
Absolute Maximum Ratings
Electrical Characteristics
Unless specified: V
EN
= V
IN
. Adjustable Option (V
ADJ
> V
TH(ADJ)
): V
IN
= 2.2V to 5.5V and I
O
= 10µA to 1.5A.
Fixed Options (V
ADJ
= GND): V
IN
= (V
O
+ 0.7V) to 5.5V and I
O
= 0A to 1.5A. Values in bold apply over the full operating temperature range.
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.
32005 Semtech Corp. www.semtech.com
SC1565
POWER MANAGEMENT
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.
(3) Required to maintain regulation. Voltage set resistors R1 and R2 are usually utilized to meet this
requirement. Adjustable versions only.
(4) Guaranteed by design.
(5) When V
ADJ
exceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from
the error amplifier and connects V
ADJ
instead.
retemaraPlobmySsnoitidnoCtseTniMpyTxaMstinU
).tnoC(OV
egatloVtuoporD
)2()1(
I
O
A1=081004Vm
005
I
O
A5.1=072005Vm
006
tnerruCdaoLmuminiM
)3(
I
O
V
NI
V=
O
V7.0+101 Aµ
timiLtnerruCI
LC
6.1 0.2 5.3 A
JDA
egatloVecnerefeR
)1(
V
FER
V
NI
V,V2.2=
JDA
V=
TUO
I,
O
Am01=881.1002.1212.1V
671.1422.1
tnerruCniPtsujdA
)4(
I
JDA
V
JDA
V=
FER
03 002 An
dlohserhTniPtsujdA
)5(
V
)JDA(HT
50.0 02.0 04.0 V
NE
tnerruCniPelbanEI
NE
V
NE
V,V0=
NI
V3.3=5.1 01 Aµ
dlohserhTniPelbanEV
HI
V
NI
V3.3= 6.1 V
V
LI
V
NI
V3.3= 4.0
noitcetorPerutarepmeTrevO
levelpirThgiHT
IH
071C°
siseretsyHT
TSYH
02C°
Electrical Characteristics (Cont.)
Unless specified: V
EN
= V
IN
. Adjustable Option (V
ADJ
> V
TH(ADJ)
): V
IN
= 2.2V to 5.5V and I
O
= 10µA to 1.5A.
Fixed Options (V
ADJ
= GND): V
IN
= (V
O
+ 0.7V) to 5.5V and I
O
= 0A to 1.5A. Values in bold apply over the full operating temperature range.
P1-P3P4-P6P7-P9P10-P12P13-P14

SC1565IST25TRT

Mfr. #:
Buy SC1565IST25TRT
Manufacturer:
Semtech
Description:
LDO Voltage Regulators ULDO 1.5A 2.5V SOT-223
Lifecycle:
New from this manufacturer.
Delivery:
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