Rainbow-electronics AT73C246 Uživatelský manuál stáhnout pdf (Strana 15)

11050A–PMAAC–07-Apr-10

AT73C246

Notes: 1. Current consumption without load. One DCDC converter ON, the other one OFF.

2. Default output voltage are set during manufacturing. Please contact Atmel for other default settings.

3. Threshold levels are programmed in register PMU_RST_LVL (0x04)

OCP Over-Current Protection Output current. 1 1.4 1.8 A

START

Start-up Time

From OFF to PWM operation.

DD(0,1)

rising to 95% of final value.

5ms

PWM

PFM to PWM Settling Time No output load. 10 µs

PWRF

DET

Power Fail Detector Threshold

Accuracy

Overload of the programmed

threshold by 10mV / 5us min

(3)

-1 - +1 %.V

OUT

Total Capacitive Load At V

FB{0,1}

pins. 8 36 µF

Table 9-5. DCDC0 and DCDC1 Electrical Characteristics

Symbol Parameter Comments Min Typ Max Units

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 158 159

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Rainbow-electronics AT73C246 Uživatelský manuál Strana 15