SC553ISKTRT Semtech, SC553ISKTRT Datasheet

IC LDO ADJ REG 150MA SOT-23-5

SC553ISKTRT

Manufacturer Part Number
SC553ISKTRT
Description
IC LDO ADJ REG 150MA SOT-23-5
Manufacturer
Semtech
Datasheet

Specifications of SC553ISKTRT

Regulator Topology
Positive Adjustable
Voltage - Output
1.25 ~ 6 V
Voltage - Input
2.25 ~ 6.5 V
Voltage - Dropout (typical)
0.15V @ 150mA
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
Other names
SC553ISKTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SC553ISKTRT
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
The SC553 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 SC553 has an adjust pin (ADJ) enabling the user to
set the output voltage anywhere from 1.25V to 6V. For a
low noise version, see SC1453 and for an error flag see
SC1457. Other features include low powered shutdown,
short circuit protection, thermal shutdown protection and
reverse battery protection. The SC553 comes in the tiny
5 lead SOT-23 package.
Revision: April 20, 2004
POWER MANAGEMENT
Description
Typical Application Circuit
VIN
C1
1uF
NOT RECOMMENDED FOR NEW DESIGN
1
3
U1
IN
EN
2
GND
SC553
OUT
ADJ
1
5
4
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Features
Applications
Regulator with Adjustable Output
“5205” compatible pinout
2% output accuracy guaranteed over line, load and
temperature
Guaranteed 150 mA output current
Very small external components - designed to work
with ceramic capacitors
Output adjustable from 1.25V to 6V
Very low supply current
Thermal overload protection
Reverse battery protection
Low power shutdown
Full industrial temperature range
Surface mount packaging (5 pin SOT-23)
Battery Powered Systems
Cellular Telephones
Cordless Telephones
Personal Digital Assistants
Portable Instrumentation
Modems
PCMCIA cards
150mA Ultra Low Dropout
R1
R2
C2
1uF
V
VOUT
OUT
=
. 1
250
www.semtech.com
SC553
1
+
R
R
1
2

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SC553ISKTRT Summary of contents

Page 1

... Full industrial temperature range ! Surface mount packaging (5 pin SOT-23) Applications ! Battery Powered Systems ! Cellular Telephones ! Cordless Telephones ! Personal Digital Assistants ! Portable Instrumentation ! Modems ! PCMCIA cards U1 SC553 OUT ADJ GND SC553 VOUT C2 1uF   •  +  250 1 OUT   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 2.25V OUT 2004 Semtech Corp 100µ 1µ 25°C. Values in bold apply over full operating ambient temperature range. IN OUT www.semtech.com SC553 ° ° ° C ° C ° C ° ...

Page 3

... Defined as the input to output differential at which the output voltage drops 100mV below the value OUT measured at a differential of 1V. Not measurable on outputs set below 2.25V due to minimum V Typical Characteristics for typical dropout voltage at other output voltage settings. 2004 Semtech Corp. = 100µ 1µ 25° ...

Page 4

... NOT RECOMMENDED FOR NEW DESIGN POWER MANAGEMENT Pin Configuration Top View SOT-23-5L Pin Descriptions Block Diagram 2004 Semtech Corp. Ordering Information Notes: (1) Only available in tape and reel packaging. A reel contains 3000 devices. (2) Lead free product. This product is fully WEEE and RoHS compliant ...

Page 5

... 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 6

... The use of multi layer boards with internal ground/power planes will lower the junction temperature and improve overall output voltage accuracy. 2004 Semtech Corp. Layout Considerations While layout for linear devices is generally not as critical as for a switching application, careful attention to detail will ensure reliable operation ...

Page 7

... Land Pattern - SOT-23-5 This land pattern is for reference only. Consult your manufacturing group to ensure you meet your company’s manufacturability guidelines. Contact Information Phone: (805)498-2111 FAX (805)498-3804 2004 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 7 SC553 ...

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