sc310xsktrt Semtech Corporation, sc310xsktrt Datasheet

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sc310xsktrt

Manufacturer Part Number
sc310xsktrt
Description
Sc310 High-side Current-sense Amplifier With Low Impedance Voltage Output
Manufacturer
Semtech Corporation
Datasheet
The SC310 is a high-side current sense amplifier ideal for
any application where precision current monitoring is
needed. Possible uses include battery-powered products
such as cellphones and notebooks, as well as industrial
and data acquisition applications. The wide 2.7V to 25V
common mode input range is independent of supply range,
providing complete flexibility in battery sensing applica-
tions.
The Current-Sense Amplifier offers three gain versions,
SC310A (gain 20 V/V), SC310B (gain 50 V/V) and
SC310C (gain 100 V/V). An external shutdown pin
(SHDN) enables turn off for the IC. A buffered output
with low impedance renders the overall gain immune to
load resistance. Output range is from 0V to Vcc - 1.7V.
Other features include tiny SOT-23-6 packaging, very low
supply current, and wide supply voltage range (3V to 25V).
The SC310 is rated for operation over the Industrial Tem-
perature range (-40°C to +125°C).
June 4, 2007
Description
POWER MANAGEMENT
Typical Application Circuit
0.1uF
2.7V to 25V
3V - 25V
VCC
R
SENSE
with Low Impedance Voltage Output
OUT
1
High-Side Current-Sense Amplifier
Features
Applications
Buffered low impedance voltage output
available
1% typical accuracy
Small, lead-free SOT23-6 Package
Notebook and Tablet PCs
Battery Packs
Charging Applications
Three gain versions (20V/V, 50V/V, 100V/V)
3V to 25V supply voltage range
270 μA supply current
Data Acquisition
Industrial and Embedded Applications
2.7V to 25V input common mode range
Industrial temperature range (-40°C to +125°C)
V
I
LOAD
OUT
0.1uF
Battery
Load/
www.semtech.com
SC310

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sc310xsktrt Summary of contents

Page 1

POWER MANAGEMENT Description The SC310 is a high-side current sense amplifier ideal for any application where precision current monitoring is needed. Possible uses include battery-powered products such as cellphones and notebooks, as well as industrial and data acquisition applications. The ...

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. Parameter Supply Voltage Differential Input Voltage ...

Page 3

POWER MANAGEMENT Electrical Characteristics (Cont 2.7V to 25V 25V CS+ CC SENSE ...

Page 4

POWER MANAGEMENT Pin Configuration TOP VIEW SHDN 1 6 GND 2 5 VCC 3 4 (SOT-23 6L) Pin Descriptions SC310A, gain = 20 V/V SC310B, gain = 50 V/V SC310C, gain = 100 V ...

Page 5

POWER MANAGEMENT Electrical Characteristics V = 12V 12V 100mV 25°C, unless otherwise specified CS+ CC SENSE A T Supply Current v/s Supply Voltage 0.4 SC310C 0.3 SC310B SC310A 0.2 0 ...

Page 6

POWER MANAGEMENT Electrical Characteristics V = 12V 12V 100mV 25°C, unless otherwise specified CS+ CC SENSE A SC310C Gain Accuracy with Temperature 1 0.8 0.6 +85 deg. C 0.4 Room Temp. 0.2 0 -0.2 ...

Page 7

POWER MANAGEMENT Electrical Characteristics (Cont 12V 12V 100mV 25°C, unless otherwise specified CS+ CC SENSE A 2005 Semtech Corp. 7 SC310 www.semtech.com ...

Page 8

POWER MANAGEMENT Block Diagram R4 CS CS- 1k SHDN Disable Detailed Description SC310 is a unidirectional high-side current sense ampli- fier for precision current monitoring. It has a wide com- mon-mode range of 2.7 to 25V and allows ...

Page 9

POWER MANAGEMENT Application Information Choosing R Choosing R Choosing R Choosing R Choosing R sense sense sense sense sense Full scale sense voltage for the amplifier is 150mV max. The resistor ( selected depending on the load of ...

Page 10

POWER MANAGEMENT Table 1. Recommended Component Values ...

Page 11

POWER MANAGEMENT Outline Drawing - SOT-23-6 2X E/2 2X N/2 TIPS SEATING PLANE NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS 3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. Land ...

Page 12

... POWER MANAGEMENT NOTES Table 1. Recommended Component Values Contact Information Phone: (805) 498-2111 FAX (805)498-3804 2005 Semtech Corp. Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Visit us at: www.semtech.com 12 SC310 www.semtech.com ...

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