Rainbow-electronics DS2778 Manual do Utilizador descarregar pdf (Página 2)

DS2775/DS2776/DS2777/DS2778

2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with

Protector and Optional SHA-1 Authentication

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +4.0V to +9.2V, T

= -20°C to +70°C, unless otherwise noted. Typical values are at T

= +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Voltage Range on PLS, CP, CC, DC Pins

Relative to V

.....................................................-0.3V to +18V

Voltage Range on V

, V

IN1

, V

IN2

, SRC Pins

Relative to V

....................................................-0.3V to +9.2V

Voltage Range on All Other Pins Relative to V

..-0.3V to +6.0V

Continuous Sink Current, PIO, DQ......................................20mA

Continuous Sink Current, CC, DC.......................................10mA

Operating Temperature Range ...........................-20°C to +70°C

Storage Temperature Range .............................-55°C to +125°C

Soldering Temperature...........................Refer to the IPC/JEDEC

J-STD-020 Specification.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Sleep mode, T

 +50°C 3 5

DD0

Sleep mode, T

> +50°C 10

DD1

Active mode 80 135

Supply Current

DD2

Active mode during SHA-1 computation 120 300

μA

Temperature Accuracy T

ERR

-3 +3 °C

2.0  V

IN1

 4.6, 2.0  (V

IN2

- V

IN1

)  4.6,

0°C  T

 +50°C

-35 +35

2.0  V

IN1

 4.6, 2.0  (V

IN2

– V

IN1

)  4.6,

= +25°C

-22 22

Voltage Accuracy

2.0  V

IN1

 4.6, 2.0  (V

IN2

- V

IN1

)  4.6 -50 +50

Input Resistance (V

IN1

, V

IN2

) 15 M

Current Resolution I

LSB

1.56 μV

Current Full Scale I

-51.2 +51.2 mV

Current Gain Error I

GERR

-1 +1 % FS

Current Offset I

OERR

0°C  T

 +70°C (Note 1) -9.375 9.375 μVh

Accumulated Current Offset q

OERR

0°C  T

 +70°C (Note 1) -255 0 μVh/Day

0°C  T

 +50°C -2 +2

Time-Base Error t

ERR

-3 +3

CP Output Voltage (V

- V

SRC

) V

OUT

= 0.9μA 4.4 4.7 5 V

CP Startup Time t

SCP

CE = 0, DE = 0, C

= 0.1μF, active mode 200 ms

Output High: CC, DC V

OHCP

= 100μA (Note 2) V

- 0.4 V

Output Low: CC V

OLCC

= 100μA V

SRC

+ 0.1 V

Output Low: DC V

OLDC

= 100μA V

SRC

+ 0.1 V

DQ, PIO Voltage Range -0.3 +5.5 V

DQ, PIO, SDA, SCL Input

Logic-High

1.5 V

DQ, PIO, SDA, SCL Input

Logic-Low

0.6 V

OVD Input Logic-High V

BAT

- 0.2 V

OVD Input Logic-Low V

+ 0.2 V

1 2 3 4 5 6 7 ... 44 45

DS2775/DS2776/DS2777/DS2778 1

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