Rainbow-electronics MAX17047 Manual de usuario descargar pdf (Pagina 7)

�� Maxim Integrated Products 7

MAX17047

ModelGauge m3 Fuel Gauge

Pin Description

Pin Configuration

PIN NAME FUNCTION

1 V

Supply Input for Thermistor Bias Switch. Connect to supply for ratiometric AIN pin-voltage measurements.

In most applications, connect V

to V

BATT

2 AIN

Auxiliary Voltage Input. Auxiliary voltage input from external thermal-measurement network. AIN also

provides battery insertion/removal detection. Connect to V

BATT

, if not used.

3 SCL Serial Clock Input. 2-wire clock line. Input only.

4 SDA Serial Data Input/Out. 2-wire data line. Open-drain output driver.

5 CSN Sense Resistor Connection. System ground connection and sense resistor input.

6 CSP Chip Ground and Sense Resistor Input

7 REG

Voltage Regulator Bypass. Connect a 0.1FF capacitor from REG to CSP.

8 ALRT

Alert Indication. An open-drain n-channel output used to indicate specified condition thresholds have been

met. A 200kI pullup resistor to power rail is required for use as an output. Alternatively, ALRT can operate

as a shutdown input with the output function disabled.

9 THRM

Thermistor Bias Connection. Supply for thermistor resistor-divider. Connect to the high side of the

thermistor/resistor-divider. THRM connects internally to V

during temperature measurement.

10 V

BATT

Power-Supply and Battery Voltage-Sense Input. Kelvin connect to positive terminal of battery pack. Bypass

with a 0.1FF capacitor to CSP.

— EP Exposed Pad. Connect to CSP.

BATT

ALRT

REG

SCL

SDA

MAX17047

2 9

THRMAIN

5 6

CSPCSN

TDFN

TOP VIEW

1 2 3 4 5 6 7 8 9 10 11 12 ... 45 46

MAX17047 1
ModelGauge m3 Fuel Gauge 1

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Rainbow-electronics MAX17047 Manual de usuario Pagina 7

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