MIC28304 Datasheet, PDF (4/39 Pages) Micrel Semiconductor – 70V 3A Power Module

Micrel, Inc.
MIC28304
Absolute Maximum Ratings⁽¹⁾
PVIN, VIN to PGND ...................................... –0.3V to +76V
PVDD, V_ANODE to PGND .................................. –0.3V to +6V
V_SW, V_FREQ, V_ILIM, V_EN........................ −0.3V to (PVIN +0.3V)
V_BSTC/BSTR to V_SW ................................................ −0.3V to 6V
V_BSTC/BSTR to PGND.......................................... −0.3V to 82V
V_FB, V_PG to PGND .........................−0.3V to (PVDD + 0.3V)
PGND to AGND............................................ −0.3V to +0.3V
Junction Temperature .............................................. +150°C
Storage Temperature (T_S)......................... −65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
ESD Rating⁽³⁾................................................. ESD Sensitive
Operating Ratings⁽²⁾
Supply Voltage (PVIN, VIN) .............................. 4.5V to 70V
Enable Input (V_EN) ................................................. 0V to VIN
V_SW, V_FEQ, V_ILIM, V_EN ..............................................0V to VIN
Power Good (V_PGOOD)..………………..……… ...0V to PVDD
Junction Temperature (T_J) ........................ −40°C to +125°C
Junction Thermal Resistance
12mm × 12mm QFN-64 (θ_JA) ............................ 20°C/W
12mm × 12mm QFN-64 (θ_JC)............................... 5°C/W
Electrical Characteristics⁽⁴⁾
PVIN = VIN = 12V, VOUT = 5V, VBST – VSW = 5V; TA = 25°C, unless noted. Bold values indicate −40°C ≤ TJ ≤ +125°C.
Parameter
Condition
Min.
Typ.
Max.
Power Supply Input
Input Voltage Range (PVIN, VIN)
4.5
70
Controller Supply Current⁽⁵⁾
Current into Pin 60; VFB = 1.5V (MIC28304-1)
Current into Pin 60;VFB = 1.5V (MIC28304-2)
0.4
0.75
2.1
3
Current into Pin 60;VEN = 0V
0.1
10
IOUT = 0A (MIC28304-1)
0.7
Operating Current
IOUT = 0A (MIC28304-2)
27
Shutdown Supply Current
PVIN = VIN = 12V, VEN = 0V
4
PVDD Supply⁽⁵⁾
PVDD Output Voltage
PVDD UVLO Threshold
VIN = 7V to 70V, IPVDD = 10mA
PVDD rising
4.8
5.2
5.4
3.8
4.2
4.7
PVDD UVLO Hysteresis
400
Load Regulation
Reference⁽⁵⁾
IPVDD = 0 to 40mA
0.6
2
3.6
Feedback Reference Voltage
TJ = 25°C (±1.0%)
−40°C ≤ TJ ≤ 125°C (±2%)
0.792
0.8
0.784
0.8
FB Bias Current
VFB = 0.8V
5
Notes:
1. Exceeding the absolute maximum ratings may damage the device.
2. The device is not guaranteed to function outside its operating ratings.
3. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
5. IC tested prior to assembly.
0.808
0.816
500
Units
V
mA
µA
mA
µA
V
V
mV
%
V
nA
March 25, 2014
4
Revision 1.1