
Micrel, Inc. MIC2027/2077
September 2006 4 M9999-091506
Absolute Maximum Ratings(1)
Supply Voltage (V
IN
)............................................–0.3V +6V
Fault Flag Voltage (V
FLG
)................................................+6V
Fault Flag Current (I
FLG
) ..............................................25mA
Output Voltage (V
OUT
) ....................................................+6V
Output Current (I
OUT
).................................Internally Limited
Enable Input (I
EN
) .......................................... –0.3V V
IN
+3V
Lead Temperature (soldering, 5sec.).........................260°C
Storage Temperature (T
S
).........................–65°C to +150°C
EDS Rating
(3)
..................................................................1kV
Operating Ratings(2)
Supply voltage (V
IN
) .....................................+2.7V to +5.5V
Ambient Temperature (T
A
)..........................–40°C to +85°C
Junction Thermal Range(T
J
).....................Internally Limited
Thermal Resistance
[300 mil] Wide SOIC (θ
JA
)................................120°C/W
[150 mil] SOIC (θ
JA
).........................................112°C/W
DIP (θ
JA
) ..........................................................130°C/W
Electrical Characteristics
V
IN
= +5V; T
A
= 25°C, bold values indicate –40°C< T
A
< +85°C, unless noted.
Symbol Parameter Condition Min Typ Max Units
MIC20x7-1, V
ENA–D
0.8V
(switch off), OUT = open 1.5 10 µA
MIC20x7-2, V
ENA–D
2.4V
(switch off), OUT = open 1.5 10 µA
MIC20x7-1, V
ENA–D
2.4V
(switch on), OUT = open 200 320 µA
I
DD
Supply Current
MIC20x7-2, V
ENA–D
0.8V
(switch on), OUT = open 200 320 µA
low-to-high transition 1.7 2.4 V Enable Input Threshold high-to-low transition 0.8 1.45 V
V
EN
Enable Input Hysteresis 250 mV
Enable Input Current V
EN
= 0V to 5.5V –1 0.01 1 µA I
EN
Enable Input Capacitance 1 pF
V
IN
= 5V, I
OUT
= 500mA 100 150 m R
DS(on)
Switch Resistance V
IN
= 3.3V, I
OUT
= 500mA 110 180 m
Output Leakage Current MIC20x7-1, V
ENx
0.8V;
MIC20x7-2, V
ENx
2.4V, (output off)
10 µA
Output Current in
Latched Thermal Shutdown MIC2077 (per Latch Output)
(during thermal shutdown state) 50 µA
t
ON
Output Turn-On Delay RL = 10, CL = 1µF, see “Timing Di agrams” 1.3 5 ms
t
R
Output Turn-On Rise Time RL = 10, CL = 1µF, see “Timing Diagrams” 1.15 4.9 ms
t
OFF
Output Turnoff Delay RL = 10, CL = 1µF, see “Timing Diagrams” 35 100 µs
t
F
Output Turnoff Fall T ime RL = 10, CL = 1µF, see “Timing Diagrams” 32 100 µs
I
LIMIT
Short-Circuit Output Current V
OUT
= 0V, enabled into short-circuit 0.5 0.9 1.25 A
Current-Limit Threshold ramped load applied to out put 1.0 1.25 A
Short-Circuit Response Time V
OUT
= 0V to I
OUT
= I
LIMIT
(short applied to output) 20 µs
V
IN
= 5V, apply V
OUT
= 0V until FLG low 1.5 3 7 ms t
D
Overcurrent Flag Response
Delay V
IN
= 3.3V, apply V
OUT
= 0V until FLG low 3 ms