ZXCT1009F-7
High Side Current Sense MonitorThe 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.
ZXCT1009F-7 shares its datasheet with ZXCT1009, whose page lists every part number it covers.
Official ZXCT1009F-7 datasheet (PDF) — the source this page was extracted from.
Manufacturer
Diodes IncorporatedCategory
Integrated CircuitsZXCT1009F-7 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 |
| Input Voltage Range | 2.5V ~ 20V |
ZXCT1009F-7 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
ZXCT1009F-7 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
ZXCT1009F-7 Applications
- Battery chargers
- Smart battery packs
- DC motor control
- Over current monitor
- Power management
- Level translating
- Programmable current source
·
ZXCT1009F-7 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 |
ZXCT1009F-7 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 |
ZXCT1009F-7 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 |
ZXCT1009F-7 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:
-
- 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
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