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MIC24051 Datasheet, PDF (4/30 Pages) Micrel Semiconductor – 12V, 6A High-Efficiency Buck Regulator | |||
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Micrel, Inc.
Absolute Maximum Ratings(1)
PVIN to PGND............................................... â0.3V to +29V
VIN to PGND ................................................. â0.3V to PVIN
PVDD, VDD to PGND ..................................... â0.3V to +6V
VSW, VCS to PGND .............................â0.3V to (PVIN +0.3V)
VBST to VSW ........................................................ â0.3V to 6V
VBST to PGND .................................................. â0.3V to 35V
VFB, VPG to PGND............................. â0.3V to (VDD + 0.3V)
VEN to PGND .......................................â0.3V to (VIN +0.3V)
PGND to SGND............................................ â0.3V to +0.3V
Junction Temperature .............................................. +150°C
Storage Temperature (TS)......................... â65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
ESD Rating(2)â¦â¦â¦â¦â¦â¦â¦â¦â¦â¦â¦â¦ ESD Sensitive
MIC24051
Operating Ratings(3)
Supply Voltage (PVIN, VIN) ........................... 4.5V to 19V
PVDD, VDD Supply Voltage (PVDD, VDD) .. 4.5V to 5.5V
Enable Input (VEN)..............................................0V to VIN
Junction Temperature (TJ) ..................... â40°C to +125°C
Maximum Power Dissipation ..................................Note 4
Package Thermal Resistance(4)
5mm x 6mm QFN-28 (θJA) .............................28°C/W
5mm x 6mm QFN-28 (θJC) ...........................2.5°C/W
Electrical Characteristics(5)
PVIN = VIN = VEN = 12V, VBST â VSW = 5V; TA = 25°C, unless noted. Bold values indicate â40°C ⤠TJ ⤠+125°C.
Parameter
Condition
Min.
Typ.
Max.
Units
Power Supply Input
Input Voltage Range (VIN, PVIN)
4.5
19
V
Quiescent Supply Current
Shutdown Supply Current
VDD Supply Voltage
VFB = 1.5V (non-switching)
VEN = 0V
730
1500
µA
5
10
µA
VDD Output Voltage
VDD UVLO Threshold
VIN = 7V to 19V, IDD = 40mA
VDD Rising
4.8
5
5.4
V
3.7
4.2
4.5
V
VDD UVLO Hysteresis
400
mV
Dropout Voltage (VIN â VDD)
DC/DC Controller
IDD = 25mA
380
600
mV
Output-Voltage Adjust Range (VOUT)
Reference
0.8
5.5
V
Feedback Reference Voltage
Load Regulation
Line Regulation
0°C ⤠TJ ⤠85°C (±1.0%)
â40°C ⤠TJ ⤠125°C (±1.5%)
IOUT = 0A to 6A (Continuous Mode)
VIN = 4.5V to 19V
0.792
0.788
0.8
0.808
V
0.8
0.812
0.25
%
0.25
%
FB Bias Current
VFB = 0.8V
50
500
nA
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k⦠in series with 100pF.
3. The device is not guaranteed to function outside operating range.
4. PD(MAX) = (TJ(MAX) â TA)/ θJA, where θJA depends upon the printed circuit layout. A 5 square inch 4 layer, 0.62â, FR-4 PCB with 2oz finish copper weight
per layer is used for the θJA.
5. Specification for packaged product only.
November 2012
4
M9999-112612-A
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