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| MIC26950_11 Datasheet, PDF (4/28 Pages) Micrel Semiconductor – 12A Hyper Speed ControlTM Synchronous DC-DC Buck Regulator | |||
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Micrel, Inc.
MIC26950
Absolute Maximum Ratings(1,2)
PVIN to PGND................................................ â0.3V to +28V
VIN to PGND ....................................................â0.3V to PVIN
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 34V
VEN to PGND ...................................... â0.3V to (VDD + 0.3V)
VFB to PGND....................................... â0.3V to (VDD + 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, 10sec)........................ 260°C
Operating Ratings(3)
Supply Voltage (PVIN, VIN)............................... 4.5V to 26V
Output Voltage Range (VOUT)........................... 0.8V to 5.5V
Bias Voltage (VDD)............................................ 4.5V to 5.5V
Enable Input (VEN) ................................................. 0V to VDD
Junction Temperature (TJ) ........................ â40°C to +125°C
Maximum Power Dissipation......................................Note 4
Package Thermal Resistance(4)
5mm x 6mm MLF®(θJA) .....................................36°C/W
Electrical Characteristics(5)
PVIN = VIN = 12V, VDD = 5V; VBST â VSW = 5V; TA = 25°C, unless noted. Bold values indicate â40°C ⤠TJ ⤠+125°C.
Parameter
Condition
Min.
Typ.
Power Supply Input
Input Voltage Range (VIN, PVIN)
4.5
VDD Bias Voltage
Operating Bias Voltage (VDD)
4.5
Undervoltage Lockout Trip Level
VDD Rising
2.4
UVLO Hysteresis
Quiescent Supply Current
VFB = 1.5V
Shutdown Supply Current
VDD = VBST = 5.5V, VIN = 26V
SW = unconnected, VEN = 0V
Reference
Feedback Reference Voltage
0°C â¤TJ ⤠85°C (±1.0%)
â40°C â¤TJ ⤠125°C (±1.5%)
0.792
0.788
Load Regulation
IOUT = 0A to 12A
Line Regulation
VIN = (VOUT + 3.0V) to 26V
FB Bias Current
VFB = 0.8V
Enable Control
EN Logic Level High
4.5V < VDD < 5.5V
1.2
EN Logic Level Low
4.5V < VDD < 5.5V
EN Bias Current
VEN = 0V
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. See âApplications Information.â
5. Specification for packaged product only.
5
2.7
50
1.4
0.7
0.8
0.8
0.2
0.1
5
0.85
0.78
50
Max.
26
5.5
3.2
3
2
0.808
0.812
0.4
Units
V
V
V
mV
mA
mA
V
%
%
nA
V
V
µA
July 2011
4
M9999-070111-C
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