BD2202G データシートの表示（PDF） - ROHM Semiconductor

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BD2202G

0.2A, 0.5A Current Load Switch ICs for Portable Equipment

ROHM Semiconductor 

BD2202G BD2206G

Datasheet

4. Under-Voltage Lockout (UVLO)

UVLO keeps the power switch off until VIN voltage exceeds 2.3V (Typ). On the other hand, from a power switch ON

situation, if VIN voltage drops to 2.2V (Typ), the power switch turns OFF. UVLO has a 100mV hysteresis. The

under-voltage lockout circuit is in operation when power switch is ON (when EN signal is active).

5. Thermal Shutdown

When the chip temperature increases to 160°C (Typ), the thermal shutdown circuit is triggered and the power

switch is turned OFF. When the chip temperature falls to 140°C (Typ), the power switch output returns to normal.

This operation will repeat itself until the causes of the chip temperature rise are removed or until the power switch

output is turned off. The thermal shutdown circuit is in operation when the power switch is ON (when EN signal is

active).

tBLANK2

tBLANK1

Output Current

ON

Switch Status

OFF

ON

EN Voltage

Figure 38. Over-Current Detection, Shutdown Operation (Return with EN Input)

tBLANK2

tBLANK1

Output Current

ON

Switch Status

OFF

ON

IN Voltage

VTUVL

VTUVH

Figure 39. Over-Current Detection, Shutdown Operation (Return with UVLO Operation)

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TSZ22111･15･001

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TSZ02201-0E3E0H300180-1-2

21.Aug.2014 Rev.003

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