MIC45205-1(2014) 查看數據表（PDF） - Micrel
零件编号
产品描述 (功能)
生产厂家
MIC45205-1 Datasheet PDF : 31 Pages
| |||
Micrel, Inc.
MIC45205
Absolute Maximum Ratings(2)
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) ......................... −65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
Operating Ratings(3)
Supply Voltage (VPVIN, VVIN) .............................. 4.5V to 26V
Output Current ................................................................. 6A
Enable Input (VEN) .................................................. 0V to VIN
Power Good (VPG) ............................................. 0V to 5VDD
Junction Temperature (TJ) ........................ −40°C to +125°C
Junction Thermal Resistance(4)
8mm × 8mm × 3mm QFN-52 (θJA) ................21.7°C/W
8mm × 8mm × 3mm QFN-52 (θJC) .................. 5.0°C/W
Electrical Characteristics(5)
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
(MIC45205-1)
VFB = 1.5V
4.5
26
V
0.35 0.75
mA
Quiescent Supply Current
(MIC45205-2)
VFB = 1.5V
2.1
3
mA
Operating Current
Shutdown Supply Current
5VDD Output
VPVIN = VIN = 12V, VOUT = 1.8V, IOUT = 0A
fSW = 600kHz (MIC45205-2)
SW = unconnected, VEN = 0V
31
mA
0.1
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
TJ = 25°C
−40°C ≤ TJ ≤ 125°C
FB Bias Current
VFB = 0.8V
Notes:
2. Exceeding the absolute maximum rating may damage the device.
3. The device is not guaranteed to function outside operating range.
4. θJA and θJC were measured using the MIC45205 evaluation board.
5. Specification for packaged product only.
0.792
0.784
0.8 0.808
V
0.8 0.816
5
500
nA
April 15, 2014
4
Revision 1.0
Share Link: 