MIC45208-1(2014) 查看數據表（PDF） - Micrel
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MIC45208-1 Datasheet PDF : 31 Pages
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Micrel, Inc.
MIC45208
Absolute Maximum Ratings(2)
Operating Ratings(3)
VPVIN, VVIN to PGND ....................................... 0.3V to +30V
VPVDD, V5VDD, VANODE to PGND......................... 0.3V to +6V
VSW, VFREQ, VILIM, VEN to PGND ............ 0.3V to (VIN +0.3V)
VBST to VSW ........................................................ 0.3V to 6V
VBST to PGND .................................................. 0.3V to 36V
VPG to PGND .................................. 0.3V to (5VDD + 0.3V)
VFB, VRIB to PGND .......................... 0.3V to (5VDD + 0.3V)
PGND to GND .............................................. 0.3V to +0.3V
Junction Temperature .............................................. +150°C
Storage Temperature (TS)......................... 65C to +150C
Lead Temperature (soldering, 10s)............................ 260°C
ESD Rating…………………………………….ESD Sensitive
Supply Voltage (VPVIN, VVIN) .............................. 4.5V to 26V
Output Current ............................................................... 10A
Enable Input (VEN) .................................................. 0V to VIN
Power Good (VPG) ............................................. 0V to 5VDD
Junction Temperature (TJ) ........................ 40C to +125C
Junction Thermal Resistance(4)
10mm × 10mm × 4mm QFN-52 (JA) ............16.6°C/W
10mm × 10mm × 4mm QFN-52 (JC) ................. 4°C/W
Electrical Characteristics(5)
VPIN = VIN = VEN = 12V, VOUT = 3.3V, VBST VSW = 5V, TJ = +25ºC. Bold values indicate 40ºC TJ +125ºC, unless otherwise noted.
Parameter
Condition
Min.
Typ. Max.
Units
Power Supply Input
Input Voltage Range (VPVIN, VIN)
Quiescent Supply Current (MIC45208-1)
Quiescent Supply Current (MIC45208-2)
Operating Current
Shutdown Supply Current
5VDD Output
VFB = 1.5V
VFB = 1.5V
VPVIN = VIN = 12V,
VOUT = 1.8V, IOUT = 0A,
fSW = 600kHz
MIC45208-1
MIC45208-2
SW = Unconnected, VEN = 0V
4.5
26
V
0.75
mA
2.1
3
mA
0.4
mA
43
4
10
µA
5VDD Output Voltage
5VDD UVLO Threshold
5VDD UVLO Hysteresis
LDO Load Regulation
Reference
VIN = 7V to 26V, I5VDD = 10mA
V5VDD Rising
V5VDD Falling
I5VDD = 0 to 40mA
4.8
5.1
5.4
V
3.8
4.2
4.6
V
400
mV
0.6
2
3.6
%
Feedback Reference Voltage
FB Bias Current
Enable Control
TJ = 25°C
40°C ≤ TJ ≤ 125°C
VFB = 0.8V
0.792
0.8 0.808
V
0.784
0.8 0.816
5
500
nA
EN Logic Level High
1.8
V
EN Logic Level Low
0.6
V
EN Hysteresis
200
mV
EN Bias Current
VEN = 12V
Notes:
2. Exceeding the absolute maximum ratings may damage the device.
3. The device is not guaranteed to function outside operating range.
4. JA and JC were measured using the MIC45208 evaluation board.
5. Specification for packaged product only.
5
10
µA
May 29, 2014
4
Revision 1.2
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