MIC45205 Datasheet, PDF (4/31 Pages) Micrel Semiconductor – 26V/6A DC-to-DC Power Module

Micrel, Inc.
MIC45205
Absolute Maximum Ratings⁽²⁾
V_PVIN, V_VIN to PGND ....................................... −0.3V to +30V
V_PVDD, V_5VDD, V_ANODE to PGND ........................ −0.3V to +6V
V_SW, V_FREQ, V_ILIM, V_EN to PGND ............ −0.3V to (V_IN +0.3V)
V_BST to V_SW ........................................................ −0.3V to 6V
V_BST to PGND .................................................. −0.3V to 36V
V_PG to PGND .................................. −0.3V to (5VDD + 0.3V)
V_FB, V_RIB to PGND .......................... −0.3V to (5VDD + 0.3V)
PGND to GND .............................................. −0.3V to +0.3V
Junction Temperature .............................................. +150°C
Storage Temperature (T_S) ......................... −65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
Operating Ratings⁽³⁾
Supply Voltage (V_PVIN, V_VIN) .............................. 4.5V to 26V
Output Current ................................................................. 6A
Enable Input (V_EN) .................................................. 0V to V_IN
Power Good (V_PG) ............................................. 0V to 5VDD
Junction Temperature (T_J) ........................ −40°C to +125°C
Junction Thermal Resistance⁽⁴⁾
8mm × 8mm × 3mm QFN-52 (θ_JA) ................21.7°C/W
8mm × 8mm × 3mm QFN-52 (θ_JC) .................. 5.0°C/W
Electrical Characteristics⁽⁵⁾
V_IN = V_EN = 12V, V_OUT = 3.3V, V_BST − V_SW = 5V, T_J = +25ºC. Bold values indicate −40ºC < T_J < +125ºC, unless otherwise noted.
Parameter
Condition
Min.
Typ. Max. Units
Power Supply Input
Input Voltage Range (V_PVIN, V_IN)
Quiescent Supply Current
(MIC45205-1)
V_FB = 1.5V
4.5
26
V
0.35 0.75
mA
Quiescent Supply Current
(MIC45205-2)
V_FB = 1.5V
2.1
3
mA
Operating Current
Shutdown Supply Current
5VDD Output
V_PVIN = V_IN = 12V, V_OUT = 1.8V, I_OUT = 0A
f_SW = 600kHz (MIC45205-2)
SW = unconnected, V_EN = 0V
31
mA
0.1
10
µA
5VDD Output Voltage
5VDD UVLO Threshold
5VDD UVLO Hysteresis
LDO Load Regulation
Reference
V_IN = 7V to 26V, I_5VDD = 10mA
V_5VDD rising
V_5VDD falling
I_5VDD = 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
T_J = 25°C
−40°C ≤ T_J ≤ 125°C
FB Bias Current
V_FB = 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. θ_JA and θ_JC 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