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| MIC26400 Datasheet, PDF (3/27 Pages) Micrel Semiconductor – 5A Hyper Speed Control Synchronous DC/DC Buck Regulator | |||
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Micrel, Inc.
MIC26400
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
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. Max. Units
Power Supply Input
Input Voltage Range (VIN, PVIN)
VDD Bias Voltage
Operating Bias Voltage (VDD)
Under-Voltage Lockout Trip Level
UVLO Hysteresis
Quiescent Supply Current
Shutdown Supply Current
Reference
Feedback Reference Voltage
Load Regulation
Line Regulation
FB Bias Current
Enable Control
EN Logic Level High
EN Logic Level Low
EN Bias Current
Oscillator
Switching Frequency (6)
Maximum duty cycle (7)
Minimum duty cycle
Minimum Off-time
Soft-Start
Soft-Start time
VDD Rising
VFB = 1.5V
VDD = VBST = 5.5V, VIN = 26V
SW = unconnected, VEN = 0V
0°C ⤠TJ ⤠85°C (±1.0%)
â40°C ⤠TJ ⤠125°C (±1.5%)
IOUT = 0A to 5A
VIN = (VOUT + 3.0V) to 26V
VFB = 0.8V
4.5V < VDD < 5.5V
4.5V < VDD < 5.5V
VEN = 0V
VFB = 0V
VFB > 0.8V
4.5
26
V
4.5
5
5.5
V
2.4
2.7
3.2
V
50
mV
1.4
3
mA
0.7
2
mA
0.792
0.788
1.2
225
0.8 0.808
V
0.8 0.812
0.2
%
0.1
%
5
nA
0.85
V
0.78
0.4
V
50
µA
300
375
kHz
87
%
0
%
360
ns
6
ms
July 2010
3
M9999-070110-A
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