component
CM1048-RT
Public Made by Adomby adom
iCM(创芯微) , TSSOP-16. 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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README
markdownCM1048-RT
iCM(创芯微) · IC · TSSOP-16
CM1048-RT from iCM(创芯微), in a TSSOP-16. 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 | VCC | power_in | Positive supply input and connection to the positive terminal of cell 4; absolute maximum rating is VSS-0.3 V to VSS+30 V. |
| 2 | VC4 | power_in | Positive voltage connection for cell 4; absolute maximum input voltage is VSS-0.3 V to VSS+30 V. |
| 3 | VC4 | power_in | Positive voltage connection for cell 4 (second pin labelled VC4 in the datasheet table and diagram); absolute maximum input voltage is VSS-0.3 V to VSS+30 V. |
| 4 | VC3 | power_in | Connection point between the negative terminal of cell 4 and the positive terminal of cell 3; absolute maximum input voltage is VSS-0.3 V to VSS+30 V. |
| 5 | VC2 | power_in | Connection point between the negative terminal of cell 3 and the positive terminal of cell 2; absolute maximum input voltage is VSS-0.3 V to VSS+30 V. |
| 6 | VC1 | power_in | Connection point between the negative terminal of cell 2 and the positive terminal of cell 1; absolute maximum input voltage is VSS-0.3 V to VSS+30 V. |
| 7 | VSS | power_in | IC ground and connection to the negative terminal of cell 1; absolute maximum rating is referenced to this pin. |
| 8 | SEL | input | Cell-count selection terminal for 3-series or 4-series operation; absolute maximum input voltage is VSS-0.3 V to VSS+5.0 V. |
| 9 | TEC | passive | Discharge overcurrent delay adjustment; an external capacitor CTEC sets TEC1 = 10 x CTEC (nF) ms with TEC2 = TEC1/10, and the absolute maximum input voltage is VSS-0.3 V to VSS+5.0 V. |
| 10 | CLR | passive | Connects a resistor to the NTC to set the charge low-temperature protection point; leave floating to disable temperature protection, and absolute maximum input voltage is VSS-0.3 V to VSS+5.0 V. |
| 11 | DHR | passive | Connects a resistor to the NTC to set the discharge high-temperature protection point; absolute maximum input voltage is VSS-0.3 V to VSS+5.0 V. |
| 12 | CHR | passive | Connects a resistor to the NTC to set the charge high-temperature protection point; absolute maximum input voltage is VSS-0.3 V to VSS+5.0 V. |
| 13 | VINI | input | Overcurrent detection input that senses the voltage across the current-sense resistor; absolute maximum input voltage is VSS-0.3 V to VSS+30 V. |
| 14 | DO | output | Discharge MOSFET gate control output with high level of VCC-0.7 V when VCC is below 12 V (10.8 V typical when VCC is above 12 V); absolute maximum voltage is VSS-0.3 V to VSS+30 V. |
| 15 | CO | output | Charge MOSFET gate control output; absolute maximum voltage is VSS-30 V to VSS+30 V. |
| 16 | VM | input | Charger and load detection terminal with about 80 kΩ typical resistance to VSS; absolute maximum voltage is VSS-30 V to VSS+30 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | iCM(创芯微) |
| Package | TSSOP-16 |
| Category | |
| Pins | 16 |
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 | -0.3 | 30 | V | VSS-0.3 ~ VSS+30, referenced to VSS | 6 | |
| Cell input voltage | VCELL | -0.3 | 30 | V | VCn terminals (n=1~4), referenced to VSS | 6 | |
| Input voltage 1 | VIN1 | -0.3 | 5 | V | SEL, TEC, CLR, DHR, CHR, referenced to VSS | 6 | |
| Input voltage 2 | VIN2 | -30 | 30 | V | VM, CO, referenced to VSS | 6 | |
| Input voltage 3 | VIN3 | -0.3 | 30 | V | DO, VINI, referenced to VSS | 6 | |
| Operating ambient temperature | TOPR | -40 | 85 | °C | 6 | ||
| Storage temperature | TSTG | -55 | 125 | °C | 6 | ||
| Normal operating current | IVCC | 10 | 15 | μA | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V | 7 | |
| Overcharge protection delay | TOC | 0.7 | 1 | 1.3 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 4.4V | 7 |
| Overcharge release delay | TOCR | 180 | 256 | 332 | ms | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 4.4 → 3.5V | 7 |
| Overdischarge release voltage | VODR | -0.08 | 3 | 0.08 | V | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V | 7 |
| Overdischarge protection delay | TOD | 0.7 | 1 | 1.3 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 2.0V | 7 |
| Overdischarge release delay | TODR | 179 | 256 | 333 | ms | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V | 7 |
| Low-voltage charge inhibit voltage | VLV | 1.125 | 1.5 | 1.875 | V | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.2V | 7 |
| Low-voltage charge inhibit release voltage | VLVR | 1.1 | 1.52 | 1.94 | V | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 1.2 → 3.5V | 7 |
| Low-voltage charge inhibit delay | TLV | 1 | 1.5 | 2 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.2V | 7 |
| Discharge overcurrent 1 protection voltage | VEC1 | -0.005 | 0.05 | 0.005 | V | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.18V | 7 |
| Discharge overcurrent 1 protection delay | TEC1 | 0.7 | 1 | 1.3 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.18V, CTEC=0.1μF (±1%) | 7 |
| Discharge overcurrent 2 protection voltage | VEC2 | -0.01 | 0.1 | 0.01 | V | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V | 7 |
| Discharge overcurrent 2 protection delay | TEC2 | 70 | 100 | 130 | ms | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V, CTEC=0.1μF (±1%) | 7 |
| Short-circuit protection delay | TSHORT | 150 | 250 | 350 | μs | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.8V | 7 |
| Discharge overcurrent release delay | TECR | 22 | 32 | 42 | ms | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0.8 → 0V | 7 |
| Charge overcurrent protection delay | TCHA | 180 | 256 | 332 | ms | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → -1.0V | 8 |
| Charge overcurrent release delay | TCHAR | 45 | 64 | 83 | ms | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = -1V → 0V | 8 |
| Charging high-temperature protection temperature | TCH | -3 | 3 | °C | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k | 8 | |
| Charging high-temperature release temperature | TCHR | -3 | 3 | °C | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k | 8 | |
| Discharging high-temperature protection temperature | TDH | -3 | 3 | °C | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k | 8 | |
| Discharging high-temperature release temperature | TDHR | -3 | 3 | °C | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k | 8 | |
| Charging high-temperature protection delay | DTCH | 1.05 | 1.5 | 1.95 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k | 8 |
| Charging high-temperature release delay | DTCHR | 1.05 | 1.5 | 1.95 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k | 8 |
| Discharging high-temperature protection delay | DTDH | 1.05 | 1.5 | 1.95 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 1k | 8 |
| Discharging high-temperature release delay | DTDHR | 1.05 | 1.5 | 1.95 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 1k → 10k | 8 |
| Charging low-temperature protection temperature | TCL | -3 | 3 | °C | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M | 8 | |
| Charging low-temperature release temperature | TCLR | -3 | 3 | °C | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k | 8 | |
| Discharging low-temperature protection temperature | TDL | -3 | 3 | °C | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M | 8 | |
| Discharging low-temperature release temperature | TDLR | -3 | 3 | °C | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k | 8 | |
| Charging low-temperature protection delay | DTCL | 1.05 | 1.5 | 1.95 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M | 8 |
| Charging low-temperature release delay | DTCLR | 1.05 | 1.5 | 1.95 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k | 8 |
| Discharging low-temperature protection delay | DTDL | 1.05 | 1.5 | 1.95 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 10k → 3M | 8 |
| Discharging low-temperature release delay | DTDLR | 1.05 | 1.5 | 1.95 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, RNTC = 3M → 10k | 8 |
| Discharge state detection voltage | VSTS | 1 | 4 | 7 | mV | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 10mV | 9 |
| Discharge state detection delay | TSTS | 3 | 4.5 | 6 | ms | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 10mV | 9 |
| Sleep delay | TSLP | 22 | 32 | 42 | s | Ta=+25°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.5V | 9 |
| Normal operating current (wide temperature) | IVCC | 10 | 18 | μA | Ta=-40~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V | 10 | |
| Overdischarge release voltage (wide temperature) | VODR | -0.1 | 3 | 0.1 | V | Ta=-40~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 2.0 → 3.5V | 10 |
| Discharge overcurrent 2 protection voltage (wide temperature) | VEC2 | -0.02 | 0.1 | 0.02 | V | Ta=-40~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5V, VINI = 0 → 0.35V | 10 |
| Low-voltage charge inhibit voltage (wide temperature) | VLV | 1 | 1.5 | 2 | V | Ta=-40~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 3.5 → 1.2V | 10 |
| Low-voltage charge inhibit release voltage (wide temperature) | VLVR | 0.99 | 1.52 | 2.05 | V | Ta=-40~+85°C; VCn - VCn+1 = 3.5V, VC1-VSS = 1.2 → 3.5V | 10 |
CAD (KiCad official)
- Symbol:
CM1048-RT - Footprint:
Package_SO:TSSOP-16_4.4x5mm_P0.65mm - 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files:
cm1048-rt-etched.step/cm1048-rt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cm1048-rt.step/cm1048-rt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: iCM(创芯微) datasheet (21 pp, sha256
e52dcc92dc78c025, retrieved 2026-11-07, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).