Datasheet LTC4013 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 60V Synchronous Buck Multi-Chemistry Battery Charger |
| Seiten / Seite | 38 / 9 — PIN FUNCTIONS BAT, SENSE (Pins 19, 20):. INTVCC (Pin 25):. PGND (Pin … |
| Dateiformat / Größe | PDF / 1.1 Mb |
| Dokumentensprache | Englisch |
PIN FUNCTIONS BAT, SENSE (Pins 19, 20):. INTVCC (Pin 25):. PGND (Pin 26):. BST (Pin 21):. IN (Pin 27):. TG (Pin 22):
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LTC4013
PIN FUNCTIONS BAT, SENSE (Pins 19, 20):
Charge Current Sense Pins.
INTVCC (Pin 25):
Internal VCC Pin. Powered by VIN, this Battery charge current is monitored and regulated via pin is the output of a 5V regulator that powers the internal a current sense resistor between SENSE and BAT. The control logic and analog circuits. Connect a ceramic ca- constant-current servo voltage between these pins is pacitor from INTVCC to PGND. The BST pin refresh diode 50mV. Overcurrent shutdown occurs when the SENSE to anode should also be connected to INTVCC. BAT voltage exceeds 100mV.
PGND (Pin 26):
Power Ground. This is the power ground
BST (Pin 21):
High Side Gate Drive Supply Pin. BST for the LTC4013. It services only the BG pin drive. provides a flying 5V supply for the high-side MOSFET
V
driver. Connect a 0.22µF capacitor from this pin to SW.
IN (Pin 27):
Input Supply Pin. VIN provides power to the INTV Connect a diode with its cathode to this pin and its anode CC internal 5V regulator. It is usually tied to the switching regulator high side MOSFET and should be to the INTVCC pin. bypassed with one or more low-ESR capacitors to ground.
TG (Pin 22):
Top Gate Drive Pin. TG drives the gate of the
VIN_S (Pin 28):
Input Supply Sense Input. VIN_S pro- top side external N-channel MOSFET. vides a Kelvin input for the VIN connection of the input
SW (Pin 23):
Switching Regulator Power Pin. SW connects PowerPath circuitry. to the power supply switch node which includes one side
SGND (Exposed Pad Pin 29):
Signal Ground Reference. of the inductor, the source of the top side MOSFET, the This pin is the quiet ground used as a reference point drain of the bottom side MOSFET and the boost capacitor. for critical resistor dividers such as the battery feedback
BG (Pin 24):
Bottom Gate Drive Pin. BG drives the gate of divider, MPPT divider and thermistor. Connect SGND to the external bottom side N-channel MOSFET. the output decoupling capacitor negative terminal and battery negative terminal. Solder SGND to a solid ground plane through multiple vias for rated thermal performance. 4013fa 9
PIN FUNCTIONS BAT, SENSE (Pins 19, 20):
Charge Current Sense Pins.
INTVCC (Pin 25):
Internal VCC Pin. Powered by VIN, this Battery charge current is monitored and regulated via pin is the output of a 5V regulator that powers the internal a current sense resistor between SENSE and BAT. The control logic and analog circuits. Connect a ceramic ca- constant-current servo voltage between these pins is pacitor from INTVCC to PGND. The BST pin refresh diode 50mV. Overcurrent shutdown occurs when the SENSE to anode should also be connected to INTVCC. BAT voltage exceeds 100mV.
PGND (Pin 26):
Power Ground. This is the power ground
BST (Pin 21):
High Side Gate Drive Supply Pin. BST for the LTC4013. It services only the BG pin drive. provides a flying 5V supply for the high-side MOSFET
V
driver. Connect a 0.22µF capacitor from this pin to SW.
IN (Pin 27):
Input Supply Pin. VIN provides power to the INTV Connect a diode with its cathode to this pin and its anode CC internal 5V regulator. It is usually tied to the switching regulator high side MOSFET and should be to the INTVCC pin. bypassed with one or more low-ESR capacitors to ground.
TG (Pin 22):
Top Gate Drive Pin. TG drives the gate of the
VIN_S (Pin 28):
Input Supply Sense Input. VIN_S pro- top side external N-channel MOSFET. vides a Kelvin input for the VIN connection of the input
SW (Pin 23):
Switching Regulator Power Pin. SW connects PowerPath circuitry. to the power supply switch node which includes one side
SGND (Exposed Pad Pin 29):
Signal Ground Reference. of the inductor, the source of the top side MOSFET, the This pin is the quiet ground used as a reference point drain of the bottom side MOSFET and the boost capacitor. for critical resistor dividers such as the battery feedback
BG (Pin 24):
Bottom Gate Drive Pin. BG drives the gate of divider, MPPT divider and thermistor. Connect SGND to the external bottom side N-channel MOSFET. the output decoupling capacitor negative terminal and battery negative terminal. Solder SGND to a solid ground plane through multiple vias for rated thermal performance. 4013fa 9