ZHCSD27 October 2014 LM3648
PRODUCTION DATA.
PIN | TYPE(1) | DESCRIPTION | ||
---|---|---|---|---|
NUMBER | NAME | |||
A1 | GND | G | Ground | |
A2 | IN | P | Input voltage connection. Connect IN to the input supply and bypass to GND with a 10-µF or larger ceramic capacitor. | |
A3 | SDA | I/O | Serial data input/output in the I2C Mode on LM3648. | |
B1 | SW | P | Drain Connection for Internal NMOS and Synchronous PMOS Switches. | |
B2 | STROBE | I | Active high hardware flash enable. Drive STROBE high to turn on Flash pulse. Internal pulldown resistor of 300 kΩ between STROBE and GND. | |
B3 | SCL | I | Serial clock input for LM3648. | |
C1 | OUT | P | Step-up DC/DC CONVERTER Output. Connect a 10-µF ceramic capacitor between this terminal and GND. | |
C2 | HWEN | I | Active high enable pin. High = Standby, Low = Shutdown/Reset. Internal pulldown resistor of 300 kΩ between HWEN and GND. | |
C3 | TORCH/TEMP | I/P | Torch terminal input or threshold detector for NTC temperature sensing and current scale back. | |
D1 | LED | P | High-side current source output for flash LED. Connect pin D1 to D3 externally. | |
D2 | TX | I | Configurable dual polarity power amplifier synchronization input. Internal pulldown resistor of 300 kΩ between TX and GND. | |
D3 | LED | P | High-side current source output for flash LED. Connect pin D1 to D3 externally. |