ZXCT1009F-7

High Side Current Sense Monitor

The ZXCT1009F-7 is a high side current sense monitor from Diodes Incorporated. View the full ZXCT1009F-7 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

Manufacturer

Diodes Incorporated

Key Specifications

Parameter	Value
Accuracy	±1%
Output Current	9.98mA
Function	Current Monitor
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
Package / Case	TO-236-3, SC-59, SOT-23-3
Sensing Method	High-Side
Supplier Device Package	SOT-23-3
Supplier Device Package	SOT-23-3
Input Voltage Range	2.5V ~ 20V

Overview

Part: ZXCT1009 — Diodes Incorporated

Type: High-Side Current Monitor

Description: The ZXCT1009 is a high-side current sense monitor that translates a voltage developed across a current shunt resistor into a proportional output current, featuring a wide input voltage range of 2.5V to 20V and a low quiescent current of 4 μA.

Operating Conditions:

Supply voltage: 2.5–20 V
Operating temperature: -40 to 85 °C
Sense voltage: 0 to 2500 mV

Absolute Maximum Ratings:

Max supply voltage: 20 V (on any pin relative to I_OUT)
Max continuous current: 25 mA (I_OUT)
Max junction/storage temperature: 125 °C

Key Specs:

Quiescent current: 4 μA (Typ, V_SENSE = 0V)
Accuracy: -2.5 to 2.5 % (R_SENSE = 0.1 Ω, V_SENSE = 200mV)
Transconductance: 10000 μA/V (Typ, I_OUT/V_SENSE)
Bandwidth: 300 kHz (Typ, V_SENSE(DC) = 10mV)
Bandwidth: 2 MHz (Typ, V_SENSE(DC) = 100mV)
V_SENSE- Input Current: 100 nA (Max)

Features:

Low cost, accurate high-side current sensing
Output voltage scaling
Up to 2.5V sense voltage
2.5V to 20V supply range
4 μA 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
Power management
Level translating
Programmable current source

Package:

SOT23
SM8

Features

Low cost, accurate high-side current sensing
Output voltage scaling
Up to 2.5V sense voltage
2.5V to 20V supply range
4 μ A 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
Power management
Level translating
Programmable current source

Pin Configuration

Pin Name	Pin Function
V SENSE+	Connection to supply voltage
V SENSE-	Connection to load
I OUT	Output current, proportional to measured current

Electrical Characteristics

Symbol	Parameter	Conditions	Limits	Limits	Limits	Units
			Min	Typ	Max
V IN	V CC range		2.5		20	V
I OUT 1	Output Current	V SENSE = 0V V SENSE = 10mV V SENSE = 100mV V SENSE = 200mV V SENSE = 1V	1 90 0.975 1.95 9.6	4 104 1.002 2.0 9.98	15 120 1.025 2.05 10.2	μA μA mA mA mA
V SENSE †	Sense Voltage		0		2500	mV
I SENSE-	V SENSE - Input Current				100	nA
A CC	Accuracy	R SENSE = 0.1 Ω V SENSE = 200mV	-2.5		2.5	%
G M	Transconductance, I OUT /V SENSE			10000		μA/V
BW	Bandwidth	V SENSE(DC) = 10mv, RF P IN = -40dBm ‡ V SENSE(DC) = 100mv, RF P IN = -20dBm ‡		300 2		kHz MHz

Absolute Maximum Ratings

Description	Description	Rating	Unit
Voltage on any pin (relative to I OUT)	Voltage on any pin (relative to I OUT)	-0.6 to 20	V
Continous output current, I OUT	Continous output current, I OUT	25	mA
Continuous sense voltage, V SENSE †	Continuous sense voltage, V SENSE †	-0.5 to +5	V
Operating temperature, T A	Operating temperature, T A	-40 to 85	°C
Storage temperature	Storage temperature	-55 to 125	°C
Package power dissipation@T =	SOT23	450	mW
A 25°C (Derate to zero @125°C)	SM8	2	W

Typical Application

The following text describes how to scale a load current to an output voltage.{ l } V _ { S E N S E } = V _ { I N } - V _ { L O A D } V _ { O U T } = 0 . 0 1 x V _ { S E N S E } x R o u T ^ { 1 }E.g.

A 1A current is to be represented by a 100mV output voltage:
1. Choose the value of RSENSE to give 50mV >

VSENSE > 500mV at full load.

For example VSENSE = 100mV at 1.0A.

RSENSE = 0.1/1.0 => 0.1 Ω .

Choose ROUT to give VOUT = 100mV, when

VSENSE = 100mV.

Rearranging 1 for Rout gives:

ROUT = VOUT /(VSENSE x 0.01)

ROUT = 0.1 / (0.1 x 0.01) = 100 Ω

Related Variants

The following components are covered by the same datasheet.

Part Number	Manufacturer	Package
ZXCT1009	Diodes Incorporated	SOT23
ZXCT1009FTA	Diodes Incorporated	TO-236-3, SC-59, SOT-23-3
ZXCT1009T8TA	Diodes Incorporated	—

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