ZXCT1009FTA Diodes Zetex, ZXCT1009FTA Datasheet

IC CURRENT MONITOR 1% SOT23-3

ZXCT1009FTA

Manufacturer Part Number
ZXCT1009FTA
Description
IC CURRENT MONITOR 1% SOT23-3
Manufacturer
Diodes Zetex
Datasheets

Specifications of ZXCT1009FTA

Function
Current Monitor
Sensing Method
High-Side
Accuracy
±1%
Voltage - Input
2.5 ~ 20 V
Current - Output
10.2mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ZXCT1009FTR

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Applications
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 4µA, combined with a SOT23
package make it a unique solution for portable battery
equipment. The SM8 device offers an alternative package
option.
Features
Application Circuit
ZXCT1009
Document number: DS33441 Rev. 12 - 2
Low cost, accurate high-side current sensing
Output voltage scaling
Up to 2.5V sense voltage
2.5V to 20V supply range
4μA quiescent current
1% typical accuracy
SOT23 and SM8 packages
AEC-Q100.3 qualified; ZXCT1009FTA only
Battery chargers
Smart battery packs
DC motor control
Over current monitor
Power management
Level translating
Programmable current source
V
V
IN
IN
2
2
V
V
SENSE+
SENSE+
ZXCT1009
ZXCT1009
www.diodes.com
R
R
SENSE
SENSE
1
1
I
I
OUT
OUT
1 of 8
R
R
V
V
SENSE-
SENSE-
OUT
OUT
Pin Assignments
3
3
V
V
To load
To load
OUT
OUT
V
V
V
V
SENSE+
SENSE+
SENSE-
SENSE-
V
V
HIGH-SIDE CURRENT MONITOR
V
V
N/C
N/C
I
I
OUT
OUT
SENSE+
SENSE+
SENSE-
SENSE-
Package Suffix – T8
Package Suffix - F
1
1
2
2
3
3
4
4
(Top View)
(Top View)
(Top View)
(Top View)
3
3
2
2
SOT23
SM8
1
1
ZXCT1009
8
8
7
7
6
6
5
5
I
I
OUT
OUT
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
© Diodes Incorporated
April 2011

Related parts for ZXCT1009FTA

ZXCT1009FTA Summary of contents

Page 1

... Up to 2.5V sense voltage • 2.5V to 20V supply range • 4μA quiescent current • 1% typical accuracy • SOT23 and SM8 packages • AEC-Q100.3 qualified; ZXCT1009FTA only Applications • Battery chargers • Smart battery packs • DC motor control • Over current monitor • ...

Page 2

Pin Descriptions Pin Name Pin Function V Connection to supply voltage SENSE+ V Connection to load SENSE- I Output current, proportional to measured current OUT Absolute Maximum Ratings Description Voltage on any pin (relative to I OUT ) Continous output ...

Page 3

Typical Characteristics ZXCT1009 Document number: DS33441 Rev HIGH-SIDE CURRENT MONITOR www.diodes.com ZXCT1009 April 2011 © Diodes Incorporated ...

Page 4

Typical Characteristics (cont.) Power Dissipation The maximum allowable power dissipation of the device for normal operation ( function of the package junction to MAX ambient thermal resistance (θ ), maximum junction temperature and ambient ...

Page 5

Application Information (cont.) Li-Ion Charger Circuit The above figure shows the ZXCT1009 supporting the Benchmarq bq2954 Charge Management IC. Most of the support components for the bq2954 are omitted for clarity. This design also uses the Diodes FZT789A high current ...

Page 6

... An electronic version of the PCB layout is available through Diodes applications group. Effect of Sense Resisitor Material on Temperature Performance Ordering Information AEC-Q100 Device level ZXCT1009FTA Grade 3 ZXCT1009F-7 None ZXCT1009T8TA None ZXCT1009 Document number: DS33441 Rev Layout shows area of shunt resistor compared to SOT23 ...

Page 7

Package Outline Dimensions 1) SOT23 SM8 15° 45° ZXCT1009 Document number: DS33441 Rev HIGH-SIDE CURRENT MONITOR (All Dimensions ...

Page 8

DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY ...

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