The CT3601 is an analog front-end chip with high-precision lithium battery monitoring and all-round safety protection, and low-side NMOS charge/discharge tube drive control, which is suitable for a variety of battery pack applications such as 10-17 strings of ternary lithium or lithium iron phosphate.
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View full reportTechnical parameters
| Power | |
|---|---|
| Electric current | ±20μV@±5mV ； ±0.2%@±200mV |
| Power waste | Full Power 模式 : 130μA@25℃; Normal Sleep 模式 : 60μA@25℃; Deep Sleep 模式 : 10μA@25℃; Shut Down 模式 : 1μA@25℃; |
| Scannable channel | 17 channel battery cell voltage; Up to 6 external temperature channels can be configured; Internal temperature of channel 1; 1-channel charging and discharging current; 2-channel high-voltage module voltage |
| Voltage | ±5mV @2V ～ 4.25V |
| Environment and package | |
| Cell temperature | ±1 ℃ @-40 ℃ ～ 85 ℃ |
| Package size | 7mm × 7mm × 1.4mm |
| Other | |
| Model | CT3601 |
| Pin | LQFP48 |
| Product Name | BMS battery management chip |
| Protection mechanism | Overcharge protection (OV) and secondary overcharge protection (SOV); Overradiation protection (UV); Charging high temperature protection (OTC), charging low temperature protection (UTC); High temperature discharge protection (OTD) and low temperature discharge protection (UTD); High temperature protection for charging and discharging tubes (MOT) (optional); Internal overheat protection (OHT) of the device; Discharge overcurrent 1 and 2, as well as short-circuit protection (OCD1, OCD2, and SCD); Overcurrent protection for charging 1 and 2 (OCC1 and OCC2); Cell connection disconnection detection and protection (CO); Support secondary protection PF output (driver fuse blown); |
| Reliability | ① Built in LDO output voltage measurement and chip working voltage measurement provide system self-test; ② Built in LDO short-circuit current limiting, overcurrent protection, and over temperature protection; ③ Differential voltage withstand of battery cell acquisition pins ± 100V, supporting 100~10k filtering resistors |
| System Expansion | Built in battery cell acquisition line breakage detection function; Integrated 3.3V/5V 20mA driver LDO power supply; Integrated 3.3V/5V 40mA LDO driver power supply; Built in load plugging and charger plugging detection function; Supports 0V no charge/discharge and End of Charge (EOC) protection (optional); Support low side charging tube voltage/discharging tube voltage drive; Built in low side pre charge tube current/pre discharge tube voltage drive; Supports up to 6 external temperature measurements (configurable); ECTRL pins support PWM control of discharge tubes; Support electronic locks; 400kHz I2C communication interface, CRC-8 verification; Internal event interrupt output |
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