Rainbow-electronics DS2784 Bedienungsanleitung PDF herunterladen (Seite 3)

DS2784: 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication

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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DQ, PIO Voltage Range -0.3 +5.5 V

DQ, PIO Input-Logic High V

1.5 V

DQ, PIO Input-Logic Low V

0.6 V

DQ, PIO Output-Logic Low V

IOL = 4mA 0.4 V

DQ, PIO Pullup Current I

Sleep mode,

= V

- 0.4V

0.2

μA

DQ, PIO Pulldown Current I

Active mode,

= 0.4V

0.2

μA

DQ Input Capacitance C

50 pF

DQ Sleep Timeout t

SLEEP

DQ < V

2 9 s

PIO, DQ Wake Debounce t

WDB

B Sleep mode 100 ms

SHA-1 COMPUTATION TIMING

Computation Time t

SHA

30 ms

ELECTRICAL CHARACTERISTICS: Protection Circuit

= 2.5V to 4.6V, T

= 0°C to +50°C, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

= 11000b 4.457 4.482 4.507

Overvoltage Detect V

= 00011b 4.252 4.277 4.302

Charge-Enable Voltage V

Relative to V

-75 -100 -125 mV

Undervoltage Detect V

2.40 2.45 2.50 V

OC = 11b -57 -72 -87

Overcurrent Detect: Charge V

COC

OC = 00b -15.5 -23.5 -31.5

OC = 11b 76 96 116

Overcurrent Detect: Discharge V

DOC

OC = 00b 23.5 35.5 47.5

SC = 1b 240 300 360 mV

Short-Circuit Current Detect V

SC = 0b 120 150 180 mV

Overvoltage Delay t

OVD

(Note 6) 425 1150 ms

Undervoltage Delay t

UVD

(Notes 6, 7) 84 680 ms

Overcurrent Delay t

OCD

8 10 12 ms

Short-Circuit Delay t

SCD

80 120 160

μs

Test Threshold V

COC, DOC conditions 0.3 0.8 1.5 V

Test Current I

TST

SC, COC, DOC condition 10 20 40

μA

PLS Pulldown Current I

PPD

Sleep mode 30 200 600

μA

Recovery Current I

VUV condition,

max: V

PLS

= 15V,

= 1V

min: V

PLS

= 4.2V,

= 2V

2.5 5.0 10.00 mA

1 2 3 4 5 6 7 8 ... 37 38

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