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L6924D013TR 数据表(PDF) 6 Page - STMicroelectronics |
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L6924D013TR 数据表(HTML) 6 Page - STMicroelectronics |
6 / 38 page Pins description and connection diagrams L6924D 6/38 2.1 Pin description Table 2. Pin functions Pin I/O Name Pin description 1 I VIN Input pin of the power stage. 2 I VINSNS Supply voltage pin of the signal circuitry. The operating input voltage range is from 2.5V and 12V, and the start-up threshold is 4V. 3-4 O ST2-ST1 Open-collector status pins. 5 I TPRG Maximum charging time program pin. It must be connected with a capacitor to GND to fix the maximum charging time, see Chapter 7.8: Maximum charging time on page 22 6 - GND Ground pin. 7 I SD Shutdown pin. When connected to GND enables the device; when floating disables the device. 8 I TH Temperature monitor pin. It must be connected to a resistor divider including an NTC or PTC resistor. The charge process is disabled if the battery temperature (sensed through the NTC or PTC) is out of the programmable temperature window see Chapter 8.1: NTC thermistor on page 25 . 9 I VOPRG Output voltage selection pin. If is it floating, VOUT = 4.1V. If is it connected to GND, VOUT = 4.2V. 10 I VOSNS Output voltage sense pin. It senses the battery voltage to control the voltage regulation loop. 11 O VOUT Output pin. (connected to the battery) 12 O VREF External reference voltage pin.(reference voltage is 1.8V±2%) 13 I/O IEND Charge termination pin. A resistor connected from this pin to GND fixes the charge termination current threshold IENDTH: if I < IENDTH, the charger behaves according to the VPRE status (see Chapter 7.5: End-of-charge current on page 20). The voltage across the resistor is proportional to the current delivered to the battery (Gas Gauge function). 14 I VPRE Multifunction pin. A resistor connected to GND allows the user to adjust the pre-charge voltage threshold VPRETH. – If the pin is floating, VPRETH = 2.8V. If the voltage on VPRE pin is lower than 0.8V, VPRETH = 2.8V and the charge is not automatically terminated when I < IENDTH. – If the voltage on VPRE goes lower than 0.5V (edge sensitive), the maximum charging time is reset. 15 I IPRG Charge current program pin. A resistor connected from this pin to GND, fixes the fast charge current value (ICHG), with an accuracy of 7%. 16 I IPRE Pre-charge current program pin. If the pin is floating IPRETH is equal to 10% of ICHG. If IPRETH has to be programmed at a different value, the pin has to be connected to GND or VREF , through a resistor see Chapter 7.2: Pre-charge current on page 18. |
类似零件编号 - L6924D013TR |
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类似说明 - L6924D013TR |
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