SC1453ISK18TRT Semtech, SC1453ISK18TRT Datasheet

IC LDO REG 1.8V 150MA SOT-23-5

SC1453ISK18TRT

Manufacturer Part Number
SC1453ISK18TRT
Description
IC LDO REG 1.8V 150MA SOT-23-5
Manufacturer
Semtech
Datasheet

Specifications of SC1453ISK18TRT

Regulator Topology
Positive Fixed
Voltage - Output
1.8V
Voltage - Input
2.25 ~ 6.5 V
Number Of Regulators
1
Current - Output
150mA
Current - Limit (min)
400mA
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
SC1453ISK1.8TRT
SC1453ISK18TR
The SC1453 is a low dropout linear regulator that
operates from a +2.25V to +6.5V input range and
delivers up to 150mA. A PMOS pass transistor allows
the low 75µA supply current to remain independent of
load, making these devices ideal for battery operated
portable equipment such as cellular phones, cordless
phones and personal digital assistants.
The SC1453 has a bandgap reference bypass pin for
very low noise operation - a 10nF (typ.) capacitor may be
connected between this pin and ground. Other features
include low powered shutdown, short circuit protection,
thermal shutdown protection and reverse battery
protection. The SC1453 comes in the tiny 5 lead SOT-23
package and the ultra-low profile 5 lead TSOT-23.
Revision: April 21, 2008
POWER MANAGEMENT
Description
Typical Application Circuit
VIN
C1
1uF
NOT RECOMMENDED FOR NEW DESIGN
1
3
U1
IN
EN
GND
2
SC1453
1
OUT
BYP
Features
Applications
Regulator with Low Noise Bypass
“2982/5205” compatible pinout
Guaranteed 150 mA output current
2% output accuracy guaranteed over line, load and
temperature
Very small external components - designed to work
with ceramic capacitors
Low 26µV
(1.5V option, C
Very low supply current
Thermal overload protection
Reverse battery protection
Low power shutdown
Full industrial temperature range
Very low profile packaging available (1mm max. height)
Surface mount packaging (5 pin SOT-23 and
Available in Lead-free packages, fully WEEE and RoHS
compliant
Battery Powered Systems
Cellular Telephones
Cordless Telephones
Personal Digital Assistants
Portable Instrumentation
Modems
PCMCIA cards
TSOT-23)
5
4
150mA Ultra Low Dropout
RMS
C2
10nF
output noise
IN
= C
OUT
C3
1uF
= 1µF, C
VOUT
BYP
= 10nF)
SC1453
www.semtech.com

Related parts for SC1453ISK18TRT

SC1453ISK18TRT Summary of contents

Page 1

... Surface mount packaging (5 pin SOT-23 and TSOT-23) Available in Lead-free packages, fully WEEE and RoHS compliant Applications Battery Powered Systems Cellular Telephones Cordless Telephones Personal Digital Assistants Portable Instrumentation Modems PCMCIA cards U1 SC1453 OUT BYP GND 2 C2 10nF 1 SC1453 = C = 1µ 10nF) OUT BYP VOUT C3 1uF www.semtech.com ...

Page 2

... 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 Electrical Characteristics Unless specified 1V OUT EN IN OUT 2008 Semtech Corp 100µ 1µ 25°C. Values in bold apply over full operating ambient temperature range. IN OUT SC1453 www.semtech.com ° ° ° C ° C ° C ° ...

Page 3

... IN(MIN) (3) Defined as the input to output differential at which the output voltage drops 100mV below the value measured at a differential of 1V. Not measurable on 1.5V and 1.8V parts due to minimum V (4) Guaranteed by design. 2008 Semtech Corp. = 100µ 1µ 25°C. Values in bold apply over full operating ambient temperature range. ...

Page 4

... NOT RECOMMENDED FOR NEW DESIGN POWER MANAGEMENT Pin Configuration Top View (SOT-23-5 & TSOT-23-5) Pin Descriptions 2008 Semtech Corp SC1453 www.semtech.com ...

Page 5

... Only available in tape and reel packaging. A reel contains 3000 devices. (2) Lead free packaging (ordered with suffix extension “TRT”) is optional. Consult factory for availability. This product is fully WEEE and RoHS compliant. (3) Evaluation board for SC1453. Specify output voltage option when ordering. 2008 Semtech Corp ...

Page 6

... XX = voltage option (examples: 5331 for 3.1V option in SOT-23-5 Top Mark BX00 For SC1453, 2.85V option for SOT-23-5 and N for TSOT-23-5 Block Diagram 2008 Semtech Corp. Bottom Mark yyww yyww = Date code (example: 0008 for week 8 of 2000) Bottom Mark yyww yyww = Date code ...

Page 7

... Increasing the bulk capacitance will further reduce output noise and improve the overall transient response. Input capacitor - Semtech recommends the use of a 1µF ceramic capacitor at the input. This allows for the device being some distance from any bulk capacitance on the rail ...

Page 8

... SOT-23-5 package. The use of multi layer boards with internal ground/power planes will lower the junction temperature and improve overall output voltage accuracy. 2008 Semtech Corp. Layout Considerations While layout for linear devices is generally not as critical mW as for a switching application, careful attention to detail will ensure reliable operation. 125° ...

Page 9

... OUT -0.30 -50 - (°C) J Load Regulation vs. Junction Temperature OUT 0.1mA to 150mA OUT -50 - (°C) J 2008 Semtech Corp. 200 6. 175 V EN 150 125 V = 3.8V IN 100 100 125 -50 Line Regulation vs. Junction Temperature 12 I OUT 100 125 -50 Current Limit vs. Junction Temperature 0.90 0.85 0.80 0.75 0.70 ...

Page 10

... Junction Temperature 5 -6. 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 -50 - (°C) J 2008 Semtech Corp. Dropout Voltage vs. Output Current 200 175 150 I = 150mA OUT 125 100 50mA OUT 100 125 0 Enable Input Threshold Voltage vs. Junction Temperature vs. Input Voltage 1.6 1.4 ...

Page 11

... OUT 1µF IN OUT 3.0V OUT C = 10nF BYP V = 3.3V OUT I = 1mA 10 OUT T = 25° 0.01 0 (kHz) 2008 Semtech Corp. Output Spectral Noise Density vs. Frequency = 100µ OUT I = 1mA OUT C = 1µ 10nF BYP T = 25°C J 0.1 0.01 0.001 10 100 1000 0.01 Output Spectral Noise Density vs. Frequency ...

Page 12

... NOT RECOMMENDED FOR NEW DESIGN POWER MANAGEMENT Evaluation Board Schematic J2 IN MON J10 J11 J12 J13 J14 J15 GND GND GND GND GND GND Evaluation Board Bill of Materials 2008 Semtech Corp. U1 SC1453 1 5 OUT BYP EN GND MON J16 LOAD DRV µ ...

Page 13

... NOT RECOMMENDED FOR NEW DESIGN POWER MANAGEMENT Evaluation Board Gerber Plots Top Copper Top Silk Screen 2008 Semtech Corp. Bottom Copper SC1453 www.semtech.com ...

Page 14

... DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS 3. OR GATE BURRS. Land Pattern - SOT-23-5 X (C) P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 2008 Semtech Corp. A DIM MIN NOM .035 A1 .000 A2 .035 N ...

Page 15

... REFERENCE JEDEC STD MO-193, VARIATION AB. Land Pattern - TSOT-23-5 X (C) P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. Contact Information Phone: (805)498-2111 FAX (805)498-3804 2008 Semtech Corp. DIMENSIONS INCHES DIM A MIN NOM - ...

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