SC1457ITSK-15TR datasheet, PDF

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SC1457ITSK-15TR: DescriptionFixed Positive LDO Regulator, 1.5V, 0.23V Dropout, CMOS, PDSO5, 1 MM HEIGHT, TSOT-23, 5 PIN; CategoryPower/power management The power supply circuit; File Size421KB，13 Pages; ManufacturerSEMTECH; Websitehttp://www.semtech.com

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SC1457ITSK-15TR Overview

Fixed Positive LDO Regulator, 1.5V, 0.23V Dropout, CMOS, PDSO5, 1 MM HEIGHT, TSOT-23, 5 PIN

SC1457ITSK-15TR Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	SEMTECH
Parts packaging code	SOT-23
package instruction	VSSOP, TSOP5/6,.11,37
Contacts	5
Reach Compliance Code	unknown
ECCN code	EAR99
Adjustability	FIXED
Maximum drop-back voltage 1	0.23 V
Nominal dropback voltage 1	0.15 V
Maximum absolute input voltage	7 V
Maximum input voltage	6.5 V
Minimum input voltage	2.25 V
JESD-30 code	R-PDSO-G5
JESD-609 code	e0
length	2.925 mm
Maximum grid adjustment rate	0.012%
Maximum load regulation	0.02%
Number of functions	1
Output times	1
Number of terminals	5
Working temperatureTJ-Max	125 °C
Working temperature TJ-Min	-40 °C
Maximum output current 1	0.15 A
Maximum output voltage 1	1.53 V
Minimum output voltage 1	1.47 V
Nominal output voltage 1	1.5 V
Package body material	PLASTIC/EPOXY
encapsulated code	VSSOP
Encapsulate equivalent code	TSOP5/6,.11,37
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
method of packing	TAPE AND REEL
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height	1 mm
surface mount	YES
technology	CMOS
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
Maximum voltage tolerance	2%
width	1.625 mm

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NOT RECOMMENDED FOR NEW DESIGN

150mA Ultra Low Dropout

Regulator with Undervoltage Flag

POWER MANAGEMENT

Description

The SC1457 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 SC1457 has very low dropout voltage (typically 1.1mV

at light loads and 150mV at 150mA) with better than

1.5% initial output voltage accuracy. It has a logic

compatible enable control input and an internal output

undervoltage monitor.

SC1457

Features

Guaranteed 150mA output current

Error flag indicates output undervoltage fault

2% output accuracy guaranteed over line, load and

temperature

Very small external components - designed to work

with ceramic capacitors

Low 110µV

RMS

output noise

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 (SOT-23-5 and

TSOT-23-5)

Designed especially for hand held, battery powered

devices, the SC1457 can be switched by a CMOS or TTL

compatible logic signal. When disabled, power

consumption drops nearly to zero. Other features include

short circuit protection, thermal shutdown protection and

reverse battery protection.

The SC1457 is available in several fixed voltages in the

tiny 5 lead SOT-23 package and the ultra low profile 5

lead TSOT-23.

Typical Application Circuit

VIN

1uF

Revision: November 10, 2004

FO R

R EC

N O

EW M

D EN

ES D

IG ED

Applications

GND

SC1457

OUT

FLG

100k

1uF

Battery Powered Systems

Cellular Telephones

Cordless Telephones

Personal Digital Assistants

Portable Instrumentation

Modems

PCMCIA cards

UNDERVOLTAGE FLAG

www.semtech.com

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