SC1563ISK1.8TRT Semtech, SC1563ISK1.8TRT Datasheet

IC LDO REG 1.8V 500MA SOT23-5

SC1563ISK1.8TRT

Manufacturer Part Number
SC1563ISK1.8TRT
Description
IC LDO REG 1.8V 500MA SOT23-5
Manufacturer
Semtech
Datasheet

Specifications of SC1563ISK1.8TRT

Regulator Topology
Positive Fixed
Voltage - Output
1.8V
Voltage - Input
2.2 ~ 6.5 V
Number Of Regulators
1
Current - Output
500mA
Current - Limit (min)
500mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Dropout (typical)
-
Other names
SC1563ISK1.8TR
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.
Revision: January 11, 2006
POWER MANAGEMENT
Description
Typical Application Circuits
SHDN
VIN
Internally Preset Output Voltage
C1
5
1
U1
IN
SHDN GND ADJ
SC1563IS-X.X
2
3
OUT
4
C2
VO (X.XV)
1
Features
Applications
SHDN
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
VIN
Quiescent 500mA Regulator
Externally Set Output Voltage
C1
V
OUT
5
1
Very Low Dropout, Low
U1
IN
SHDN GND ADJ
1.200
SC1563IS-X.X
2
(R1
R2
3
OUT
R2)
4
Volts
SC1563
www.semtech.com
R1
R2
C2
VO

Related parts for SC1563ISK1.8TRT

SC1563ISK1.8TRT Summary of contents

Page 1

... Lead-free, fully WEEE and RoHS compliant Applications Personal Digital Assistants Battery powered systems Motherboards Peripheral cards PCMCIA cards Externally Set Output Voltage VO (X.XV) 5 VIN 1 SHDN OUT 1 SC1563 Very Low Dropout, Low U1 SC1563IS-X OUT R1 SHDN GND ADJ 1.200 (R1 R2) Volts R2 www.semtech.com VO ...

Page 2

... Note: (1) Minimum pad size. Electrical Characteristics Unless specified 0V, Adjustable mode (V SHDN Fixed mode (V = GND 0.7V) to 5.5V and I ADJ IN OUT 2006 Semtech Corp > 2.2V to 5.5V and I ADJ TH(ADJ) IN OUT = 0A to 500mA. Values in bold apply over full operating temperature range. OUT SC1563 500mA, ...

Page 3

... V straints. See typical characteristics curves. (3) Guaranteed by design. (4) When V exceeds this threshold, the “Sense Select” switch disconnects the internal feedback chain from the ADJ error amplifier and connects V ADJ 2006 Semtech Corp. > 2.2V to 5.5V and I ADJ TH(ADJ) IN OUT = 0A to 500mA. Values in bold apply over full operating temperature range. ...

Page 4

... POWER MANAGEMENT Pin Configurations Top View SOT-23-5 Marking Information 63XX = SC1563, voltage option (example: 6318 for 1.8V option) yyww = Date code (example: 0008 for week 8 of 2000) 2006 Semtech Corp. Ordering Information Notes: (1) Where -X.X denotes voltage options. Available voltages are: 1.8V, 2.5V, 2.8V, 3.0V, 3.1V and 3.3V. ...

Page 5

... POWER MANAGEMENT Block Diagram Pin Descriptions 2006 Semtech Corp < 1.200 (R1 R2) V Volts OUT SC1563 www.semtech.com ...

Page 6

... External voltage selection resistors - the use of 1% resistors, and designing for a current flow recommended to ensure a well regulated output (thus R2 120k ). 2006 Semtech Corp. Thermal Considerations The power dissipation in the SC1563 is approximately equal to the product of the output current and the input to output voltage differential: ...

Page 7

... IN OUT(NOM) 0. 0mA to 500mA OUT 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0.02 0.00 -50 - (°C) J 2006 Semtech Corp. 10000 1000 100 10 75 100 125 150 3.0 Line Regulation vs. Junction Temperature 0.40 V 0.35 I 0.30 0.25 = 0mA 0.20 0.15 = 500mA 0.10 0.05 0.00 ...

Page 8

... IN 1.208 1.206 1.204 I = 0mA OUT 1.202 1.200 1.198 1.196 I = 500mA OUT 1.194 1.192 1.190 -50 - (°C) J 2006 Semtech Corp. Dropout Voltage (I 150 125 100 3.8 4.0 4.2 4.4 4.6 2.2 2.4 Reference Voltage (V 1.205 V IN 1.204 1.203 1.202 1.201 1.200 1.199 1 ...

Page 9

... J Shutdown Pin Threshold Voltage vs. Junction Temperature vs. Input Voltage 1.8 1 1 0.8 0 0.4 -50 - (°C) J 2006 Semtech Corp. 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0.00 75 100 125 150 - 100 125 150 9 SC1563 Shutdown Pin Current vs. ...

Page 10

... CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Land Pattern - SOT-23-5 X (C) P NOTES: 1. Contact Information Phone: (805)498-2111 FAX (805)498-3804 2006 Semtech Corp. A DIM MIN NOM .035 A1 .000 A2 .035 N b .010 c ...

Related keywords