MIC2012YM Micrel Inc, MIC2012YM Datasheet - Page 15

• Manufacturer Part Number: MIC2012YM
• Description: IC USB PWR CTRLR DUAL 8-SOIC
• Manufacturer: Micrel Inc

Specifications of MIC2012YM

• Lead Free Status: Lead free
• Controller Type: USB Power Controller
• Interface: USB
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 1mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Other names: 576-1682-5; MIC2012YM

dead short on the output.
Fault Status Output
The FAULT signal is an active-low output with an open-drain
or weak pull-up confi guration. FAULT is asserted (active-low)
when either an overcurrent or thermal shutdown condition
occurs. In the case of an overcurrent condition, FAULT will
be asserted only after the fl ag response delay time, t
elapsed. This ensures that FAULT is asserted only upon valid
overcurrent conditions and that erroneous error reporting is
eliminated. For example, false overcurrent conditions can
occur during hot-plug events when a highly capacitive load
is connected and causes a high transient inrush current that
January 2005
MIC2012
(MIC2010-2)
(MIC2070-2)
FAULT
FAULT
V
V
OUT
OUT
EN
EN
Output Resets When Load is Removed
Figure 7. MIC2072 System Timing—
Figure 6. MIC2012 System Timing
DLY
, has
15
exceeds the current-limit threshold. The FAULT response
delay time t
Undervoltage Lockout
Undervoltage lockout (UVLO) prevents the output MOSFET
from turning on until the AUX input exceeds approximately
3.5V. UVLO ensures that the output MOSFETs remain off
to prevent high transient inrush current due to stray or bulk
load capacitance. This helps to ensure that the power supply
Thermal Shutdown
DLY
Load Removed–
Overcurrent Fault
Overcurrent Fault
Output Reset
Reached
is typically 10ms.
MIC2012/2072
Micrel