MIC2090_11 Datasheet, PDF (4/23 Pages) Micrel Semiconductor – Current Limiting Power Distribution Switches

Micrel, Inc.
MIC2090/MIC2091
Electrical Characteristics⁽⁴⁾ (Continued)
V_IN = 5V; T_A = 25°C, bold values indicate –40°C ≤ T_A ≤ +85°C, unless noted.
Symbol
Parameter
Condition
Min.
Output to Input Leakage
Current (Reverse Leakage
Current)
MIC2090 and MIC2091, V_EN ≤ 0.5V, (output
off), V_OUT = 5.5V, V_IN = 0V
Current Limit
I_LIMIT
t_{SC_RESP}
MIC2090 @ V_OUT = 4.5V
50
MIC2090 @ V_OUT = 0V
50
Current-Limit Threshold
MIC2091 @ V_OUT = 4.5V
100
MIC2091 @ V_OUT = 0V
100
Short-Circuit Response
Time
Short circuit applied to output after switch is
turned on, see “Timing Diagrams”. V_IN = 3.3V.
Time After Switch Shuts
T_AUTORESTART
Down From An Over-
Current Condition Before
30
It Tries To Turn On Again.
FAULT/ Flag
Error Flag Output Voltage Output voltage high (1mA Sinking)
t_{D_FAULT/}
t_{R_FAULT/}
When an over-current condition happens, the
Time After Switch Comes
Into Current Limit Before
The PIN FAULT/ Is Pulled
Low.
part will go into constant output current for this
time. After this time it will turn off the output
and pull low the PIN FAULT/. The MIC2090-1
and MIC2091-1 will automatically restart
themselves after the auto restart time
5
T_AUTORESTART.
FAULT/ Rising Time
FAULT/ is connected to V_IN = 5V through 10kΩ
and 100pF in parallel. See “Timing Diagrams”
t_{F_FAULT/}
FAULT/ Falling Time
Reverse Voltage Protection (OGI)
OGI
Output Voltage Greater
Than Input Voltage (OGI)
If the output voltage is greater than the input
voltage by this amount, the part will shut down.
The enable pin must be recycled to reset.
OGI_TIME
Time that the output voltage can be greater
than the input voltage before the chip is shut
down.
Thermal Protection
T_OVERTEMP
Over-Temperature
Shutdown
T_J Rising
T_J Falling
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. Specification for packaged product only.
5. V_IL(MAX) = Maximum positive voltage applied to the input which will be accepted by the device as a logic low.
V_IH(MIN) = Minimum positive voltage applied to the input which will be accepted by the device as a logic high.
Typ.
75
100
150
175
20
60
10
5
1
85
10
150
140
Max. Units
10
µA
100
150
mA
200
250
ns
90
ms
0.4
V
20
ms
µs
µs
mV
ms
°C
July 2011
4
M9999-070611-B