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CH70105AB5PR
Public Made by Adomby adom
COSEMITECH Current Sensors, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownCH70105AB5PR
COSEMITECH · Current Sensors · SOIC-8
CH70105AB5PR from COSEMITECH, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | IP+ | passive | Terminal for current being sensed, fused internally with pin 2 (primary conductor path, pins 1 and 2 to pins 3 and 4). |
| 2 | IP+ | passive | Terminal for current being sensed, fused internally with pin 1 (primary conductor path, pins 1 and 2 to pins 3 and 4). |
| 3 | IP- | passive | Terminal for current being sensed, fused internally with pin 4 (primary conductor path, pins 1 and 2 to pins 3 and 4). |
| 4 | IP- | passive | Terminal for current being sensed, fused internally with pin 3 (primary conductor path, pins 1 and 2 to pins 3 and 4). |
| 5 | GND | power_in | Signal ground terminal, electrically isolated from the current-sensing terminals (pins 1-4). |
| 6 | FILTER | passive | Terminal for external capacitor that sets bandwidth. |
| 7 | VIOUT | output | Analog output signal proportional to the sensed current; absolute maximum is VCC + 0.5 V and reverse -0.1 V. |
| 8 | VCC | power_in | Device power supply terminal; 5±0.5 V for CH70105AB5 (absolute maximum 6 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | COSEMITECH |
| Package | SOIC-8 |
| Category | Sensors |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 4.5 | 5.5 | V | 9 | ||
| Current-Sensing Range | IPR | -5 | 5 | A | 9 | ||
| Total Output Error | ETOT | -2 | 1 | 2 | % | IP = IPR(max), Tj = -40°C to 150ºC | 9 |
| Sensitivity Error | Esens | -1.5 | 1 | 1.5 | % | IP = IPR(max), Tj = -40°C to 150°C | 9 |
| Offset Voltage | VOE | -10 | 6 | 10 | mV | IP = 0 A, Tj = -40°C to 150ºC | 9 |
| Sensitivity Error Lifetime Drift | Esens_drift | -1 | 1 | % | 9 | ||
| Total Output Error Lifetime Drift | Etot_drift | -1 | 1 | % | 9 | ||
| Supply Current | ICC | 10 | 14 | mA | VCC = 5 V, output open | 8 | |
| Output Capacitance Load | CL | 10 | nF | VIOUT to GND | 8 | ||
| Output Resistive Load | RL | 4.7 | kΩ | VIOUT to GND | 8 | ||
| Nonlinearity | ELIN | -1 | 1 | % | Through full range of IP | 8 | |
| Saturation Voltage Low | VOL | 0.2 | V | RL = 4.7 kΩ, TA = 25°C | 8 | ||
| Absolute Max Supply Voltage | VCC | 6 | V | 6 | |||
| Reverse Supply Voltage | VRCC | -0.1 | V | 6 | |||
| Reverse Output Voltage | VRIOUT | -0.1 | V | 6 | |||
| Operating Ambient Temperature | TA | -40 | 150 | °C | 6 | ||
| Storage Temperature | TS | -65 | 165 | °C | 6 | ||
| Junction Temperature | TJ(max) | 165 | °C | 6 | |||
| Sensitivity | Sens | 400 | mV/A | IPR(min) < IP < IPR(max), VCC = 5V | 9 | ||
| Primary Conductor Resistance | RIP | 1.2 | mΩ | TA = 25°C | 8 | ||
| Internal Filter Resistance | RF(int) | 1.7 | kΩ | 8 | |||
| Rise Time | tr | 3 | μs | IP = IP(max), TA = 25°C, CL = 1 nF | 8 | ||
| Propagation Delay | tpd | 2 | μs | IP = IP(max), TA = 25°C, CL = 1 nF | 8 | ||
| Response Time | tRESPONSE | 4 | μs | IP = IP(max), TA = 25°C, CL = 1 nF | 8 | ||
| Bandwidth | BW | 120 | kHz | Small signal -3 dB; CL = 1 nF | 8 | ||
| Noise Density | IND | 150 | µA(rms)/√Hz | Input-referenced noise density; TA = 25°C, CL = 1 nF | 8 | ||
| Noise | IN | 25 | mA(rms) | Input-referenced noise: CF = 4.7 nF, CL = 1 nF, BW = 18 kHz, TA = 25°C | 8 | ||
| Sensitivity Ratiometry Coefficient | SENS_RAT_COEF | 1.3 | VCC = 4.5 to 5.5 V, TA = 25ºC | 8 | |||
| Zero-Current Output Ratiometry Coefficient | QVO_RAT_COEF | 1 | VCC = 4.5 to 5.5 V, TA = 25ºC | 8 | |||
| Power-On Time | tPO | 62 | μs | Output reaches 90% of steady-state level, TA = 25°C, IP = IPR(max) applied | 8 | ||
| Shorted Output-to-Ground Current | ISC(GND) | 3.3 | mA | TA = 25ºC | 8 | ||
| Shorted Output-to-VCC Current | ISC(VCC) | 45 | mA | TA = 25ºC | 8 | ||
| Package Thermal Resistance (Junction to Ambient) | RθJA | 23 | ºC/W | 7 | |||
| Package Thermal Resistance (Junction to Lead) | RθJL | 5 | ºC/W | 7 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to | 2 |
CAD (KiCad official)
- Symbol:
CH70105AB5PR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ch70105ab5pr-etched.step/ch70105ab5pr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ch70105ab5pr.step/ch70105ab5pr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: COSEMITECH datasheet (53 pp, sha256
ae3ce86b2e751ddf, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).