SC1453ISK-XXXTR SEMTECH [Semtech Corporation], SC1453ISK-XXXTR Datasheet

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SC1453ISK-XXXTR

Manufacturer Part Number
SC1453ISK-XXXTR
Description
150mA Ultra Low Dropout Regulator with Low Noise Bypass
Manufacturer
SEMTECH [Semtech Corporation]
Datasheet
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: August 24, 2006
POWER MANAGEMENT
Description
Typical Application Circuit
VIN
C1
1uF
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

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SC1453ISK-XXXTR Summary of contents

Page 1

POWER MANAGEMENT Description 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, ...

Page 2

POWER MANAGEMENT Absolute Maximum Ratings 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 ...

Page 3

POWER MANAGEMENT Electrical Characteristics (Cont.) Unless specified 1V OUT EN IN OUT ...

Page 4

POWER MANAGEMENT Pin Configuration Top View (SOT-23-5 & TSOT-23-5) Pin Descriptions ...

Page 5

POWER MANAGEMENT Marking Information Top Mark x3XX x = package (5 for SOT-23-5, T for TSOT-23- SC1453 XX = voltage option (examples: 5331 for 3.1V option in SOT-23-5 Top Mark BX00 For SC1453, 2.85V option ...

Page 6

POWER MANAGEMENT Applications Information Theory Of Operation The SC1453 is intended for applications where very low dropout voltage, low supply current and low output noise are critical. It provides a very simple, low cost solution that uses very little pcb ...

Page 7

... With the standard SOT-23-5/TSOT-23-5 Land Pattern shown at the end of this datasheet, and minimum trace widths, the thermal impedance junction to ambient for SC1453ISK is 256°C/W. Thus no additional heatsinking is required for this example. The junction temperature can be reduced further (or higher power dissipation can be allowed) by the use of ...

Page 8

POWER MANAGEMENT Typical Characteristics Quiescent Current vs. Junction Temperature vs. Input Voltage 120 I = 150mA OUT 100 -50 - (°C) J Output Voltage vs. Junction Temperature vs. Output Current 0.00 ...

Page 9

POWER MANAGEMENT Typical Characteristics (Cont.) Dropout Voltage vs. Junction Temperature vs. Output Current 200 175 150 125 100 -50 - (°C) J Bypass Start-up Rise Time vs. Junction Temperature vs. Input Voltage ...

Page 10

POWER MANAGEMENT Typical Characteristics (Cont.) Output Spectral Noise Density vs. Frequency vs. Output Voltage, C OUT 10 1 0.1 Top to bottom 3.3V OUT V = 3.0V OUT V = 2.8V OUT 0. 2.5V OUT V ...

Page 11

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 ...

Page 12

POWER MANAGEMENT Evaluation Board Gerber Plots Top Copper Top Silk Screen 2006 Semtech Corp. Bottom Copper ...

Page 13

POWER MANAGEMENT Outline Drawing - SOT-23-5 2X E/2 ccc C 2X N/2 TIPS aaa C SEATING PLANE C NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD ...

Page 14

POWER MANAGEMENT Outline Drawing - TSOT-23-5 2X E/2 2X N/2 TIPS aaa C SEATING PLANE NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR ...

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