MIC1344 Datasheet, PDF (4/17 Pages) Micrel Semiconductor – Smart, 3A, Two-Channel, Power ORing Switch

Micrel, Inc.
MIC1344
Absolute Maximum Ratings⁽³⁾
INA, INB, OUT, ENA, ENB........................... −0.3V to +6.0V
ASEL\, BSEL\, STAOK, STBOK .................. −0.3V to +6.0V
ILIMA ..................................................... −0.3V to V_INA +0.3V
ILIMB ..................................................... −0.3V to V_INB +0.3V
Power Dissipation (P_D) ........................... Internally Limited⁽⁶⁾
Lead Temperature (soldering, 10s)............................ 260°C
Junction Temperature (T_J) ........................ –40°C to +125°C
Storage Temperature (T_S).........................–65°C to +150°C
ESD Rating.................................................................Note 7
Operating Ratings⁽⁴⁾
INA, INB⁽⁵⁾ .................................................... +2.8V to +5.5V
OUT, ENA, ENB ................................................ 0V to +5.5V
ASEL\, BSEL\, STAOK, STBOK ....................... 0V to +5.5V
ILIMA .....................................................................0V to V_INA
ILIMB .....................................................................0V to V_INB
Junction Temperature (T_J) ........................ –40°C to +125°C
Junction Thermal Resistance
12-Pin 2mm × 2mm FTQFN:
θ_JA ............................................................. 77.9°C/W
θ_JC............................................................. 11.9°C/W
Electrical Characteristics
VINA or VINB = 5V; IOUT = 100mA; CINA = CINB = 1µF, COUT = 10µF, TJ = +25°C, bold values indicate junction temperature
–40°C to +125°C, unless noted.
Parameter
Condition
Min. Typ. Max. Units
Supply Current
INA and INB Rising UVLO Voltage
Both inputs disabled, IOUT = 0A. Per channel.
One of the inputs enabled, IOUT = 0A.
11
15
µA
300
350
2.2 2.35
2.5
V
UVLO Hysteresis
0.1
V
INA or INB Switch Resistance
Output-to-Input Leakage Current
IOUT = 500mA.
VINA or VINB = 2.8V, IOUT = 500mA
Leakage current of OUT to INA or INB when the
corresponding input channel is turned off.
70
200
mΩ
120
220
mΩ
1
10
µA
Input-to-Input Leakage Current
Leakage current of INA to INB, or INB to INA.
1
10
µA
INA-to-INB or INB-to-INA Switchover
Comparator Hysterisis Voltage
300
mV
ILIMA or ILIMB
Output Current Accuracy (IN = 2.8V)
RILIMA, RILIMB = 931Ω
RILIMA, RILIMB = 10kΩ
2.58 2.85 3.15
A
0.25 0.28 0.31
ILIMA or ILIMB
Output Current Accuracy (IN = 5.5V)
RILIMA, RILIMB = 931Ω
RILIMA, RILIMB = 10kΩ
2.40 2.7 3.00
A
0.20 0.25 0.30
INA or INB Reverse Voltage
Shutdown Threshold
VOUT = 2.6V to VINA = 2.5V (with INA selected) or
VOUT = 2.6V to VINB = 2.5V (with INB selected)
100
mV
INA or INB Reverse Voltage
Shutdown Hysteresis
VOUT falling
50
mV
Notes:
3. Exceeding the absolute maximum ratings may damage the device.
4. The device is not guaranteed to function outside its operating ratings.
5. INA and INB can be taken to 0V; however the minimum operating voltage is 2.8V.
6. The maximum allowable power dissipation of any TA (ambient temperature) is PD(MAX) = (TJ(MAX) – TA) / θJA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the MIC1344 will go into thermal shutdown.
7. Devices are ESD sensitive. Handling precautions recommended. Human Body Model (HBM) is 1.5kΩ in series with 100pF. Machine Model (MM), is
200pF, per JESD 22-A115.
April 24, 2015
4
Revision 1.0