ZXCT1009F Diodes Inc, ZXCT1009F Datasheet

IC, CURRENT MONITOR, 9.98mA, 3-SOT-23

ZXCT1009F

Manufacturer Part Number
ZXCT1009F
Description
IC, CURRENT MONITOR, 9.98mA, 3-SOT-23
Manufacturer
Diodes Inc
Datasheet

Specifications of ZXCT1009F

Supply Voltage
20V
Digital Ic Case Style
SOT-23
No. Of Pins
3
No. Of Regulated Outputs
1
Operating Temperature Range
-40°C To +85°C
Termination Type
SMD
Operating Temperature Min
-40°C
Filter Terminals
SMD
Rohs Compliant
Yes
Operating Temperature Max
85°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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HIGH-SIDE CURRENT MONITOR
DESCRIPTION
The ZXCT1009 is a high side current sense monitor.
Using this device eliminates the need to disrupt the
ground plane when sensing a load current.
It takes a high side voltage developed across a current
shunt resistor and translates it into a proportional
output current.
A user defined output resistor scales the output current
into a ground-referenced voltage.
The wide input voltage range of 20V down to as low as
2.5V make it suitable for a range of applications. A
minimum operating current of just 4 A, combined with
its SOT23 package make it a unique solution for
portable battery equipment.
FEATURES
ISSUE 9 - OCTOBER 2005
ORDERING INFORMATION
Low cost, accurate high-side current sensing
Output voltage scaling
Up to 2.5V sense voltage
2.5V – 20V supply range
4µA quiescent current
1% typical accuracy
SOT23 and SM8 packages
ZXCT1009T8TA
ZXCT1009FTA
DEVICE
REEL
SIZE
7”
7”
WIDTH
12mm
TAPE
8mm
QUANTITY PER
3,000 units
1,000 units
REEL
1
APPLICATIONS
APPLICATION CIRCUIT
Battery chargers
Smart battery packs
DC motor control
Over current monitor
Power management
Level translating
Programmable current source
PARTMARKING
ZXCT1009
109
PACKAGE
SOT23
S E M I C O N D U C T O R S
SM8
ZXCT1009

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ZXCT1009F Summary of contents

Page 1

... Up to 2.5V sense voltage 2.5V – 20V supply range 4µA quiescent current 1% typical accuracy SOT23 and SM8 packages ORDERING INFORMATION DEVICE REEL TAPE SIZE WIDTH ZXCT1009FTA 7” 8mm ZXCT1009T8TA 7” 12mm ISSUE 9 - OCTOBER 2005 APPLICATIONS Battery chargers Smart battery packs DC motor control ...

Page 2

ZXCT1009 ABSOLUTE MAXIMUM RATINGS Voltage on any pin Continuous output current Continuous sense voltage Operating temperature Storage temperature Package power dissipation SOT23 SM8 Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings for ...

Page 3

Tamb = 25° OUT 1m 100µ 10µ 100µ 1m 10m V (V) SENSE Typical Output v Sense Voltage 10.2 10.0 9.8 9.6 9.4 -40 - Temperature (°C) Output ...

Page 4

ZXCT1009 TYPICAL CHARACTERISTICS (Cont.) PIN DESCRIPTION Pin Name Pin Function V sense+ Supply voltage V sense- Connection to load/battery I out Output current, proportional load CONNECTION DIAGRAMS SOT23 Package Suffix – F Top View S E ...

Page 5

POWER DISSIPATION The maximum allowable power dissipation of the device for normal operation (Pmax function of the package junction to ambient thermal resistance ( ja), maximum junction temperature (Tjmax), and ambient temperature (Tamb), according to the expression: P ...

Page 6

ZXCT1009 APPLICATIONS INFORMATION (Continued) Charger input FZT789A FMMT3904 ZHCS100 V in FMMD914 5V bq2954 MOD pin FMMT451 I out SNS pin Support components omitted for clarity Li-Ion Charger Circuit The above figure shows the ZXCT1009 supporting the Benchmarq bq2954 Charge ...

Page 7

APPLICATIONS INFORMATION (Continued) PCB trace shunt resistor for low cost solution The figure below shows output characteristics of the device when using a PCB resistive trace for a low cost solution in replacement for a conventional shunt resistor. The graph ...

Page 8

ZXCT1009 PACKAGE DIMENSIONS SOT23 PACKAGE DIMENSIONS SM8 © Zetex Semiconductors plc 2005 Europe Americas Zetex GmbH Zetex Inc Streitfeldstraße 19 700 Veterans Memorial Hwy D-81673 München Hauppauge, NY 11788 Germany USA Telefon: (49 Telephone: (1) ...

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