MIC2012
Micrel
Absolute Maximum Ratings (Note 1, Note 4)
Operating Ratings (Note 2)
Supply Voltage (V
V
V
) ................... –0.3V to 6V
Supply Voltage (V
V
) ..................... +4.5V to +5.5V
IN, MAIN, AUX
MAIN, AUX
EN1, EN2, S3# Input Pins ................................ –0.3V to 6V
FAULT#, OUT1, OUT2 Output Pins ................. –0.3V to 6V
FAULT Output Current ...............................................25mA
ESD Rating, Note 3 ...................................................... 2kV
Ambient Temperature (T ) ........................... –0°C to +70°C
A
Junction Temperature (T ) ....................... Internally Limited
J
Package Thermal Resistance
QSOP (θ ) .......................................................163°C/W
JA
SOIC (θ ) .........................................................160°C/W
JA
Electrical Characteristics
VMAIN = 5V; AUX = 5V; TA = 25°C; unless noted
Symbol
VMAIN
Parameter
Condition
Min
Typ
5.0
16
Max
5.5
22
Units
V
MAIN Supply Voltage
4.5
IMAIN (ON)
MAIN Supply Current Switches On
S3# = 1, no load
µA
Note 5
IMAIN (OFF)
ILEAK
MAIN Supply Current Switches Off
Note 5, (MIC20x2-1, MIC20x2-2 only)
S3# = 1, no load
5
µA
µA
MAIN Reverse Leakage Current,
AUX Supply Voltage
S3# = 0, both switches ON, VMAIN = 0V
–10
+10
VAUX
4.5
5.0
.6
5.5
1
V
IAUX ON
AUX Supply Current,
both switches on, Note 5
No load
S3# = 0
mA
IAUX OFF
VUV/AUX
VHYS
AUX Supply Current, switches
off. (MIC20x2-1, MIC20x2-2 only)
No load
S3# = 0
5
µA
AUX Undervoltage Lockout
Threshold
VAUX increasing
VAUX decreasing
3.5
3.3
3.7
3.5
4.0
3.8
V
V
AUX Undervoltage Lockout
Hysteresis
200
mV
RDSMAIN
RDSAUX
MAIN On-Resistance, Each Output
AUX On-Resistance, Each Output
MAIN Current-Limit Threshold
MAIN Short-Circuit Current-Limit
AUXCurrent-Limit Threshold
S3# = 1, IOUT = 500mA
S3# = 0, IOUT = 100mA
S3# = 1, VOUT = 4.0V, ramped load
VOUT = 0V
100
500
140
700
1.25
1.25
195
mΩ
mΩ
A
ILIMIT(MAIN)
0.5
0.5
A
ILIMIT(AUX)
S3# = 0, VOUT = 4.0V, ramped load
VOUT = 0V, COUT = 100µF
High-to-Low transition
105
150
80
mA
mA
V
AUX Short-Circuit Current-Limit
VTH
S3#, EN1, EN2. Input
Threshold Voltage
(EN1, EN2, for MIC20x2-x only)
.8
1.5
1.7
Low-to-High transition
2.0
V
VHYS
IIN
EN1, EN2 and S3# Input Hysteresis
(EN1, EN2, for MIC20x2-x only)
200
mV
µA
µA
mA
S3#, EN1, EN2 Input Current
(EN1, EN2, for MIC20x2-x only)
VS3/EN = 5V, 0V
–1
1
IOFF
OUT1, OUT2 Leakage Current
(MIC2012-x, MIC2072-x only)
Outputs are off, VOUT = 0
Outputs latched off
–10
10
Pull-Up Current During Latched
Output State (MIC2072-1, -2)
1
MIC2012/2072
4
September 2000