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| MIC261201 Datasheet, PDF (4/30 Pages) Micrel Semiconductor – 28V, 12A Hyper Speed Control™ Synchronous DC/DC Buck Regulator | |||
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Micrel, Inc.
MIC261201
Absolute Maximum Ratings(1, 2)
PVIN to PGND................................................ â0.3V to +29V
VIN to PGND ....................................................â0.3V to PVIN
PVDD, VDD to PGND .......................................... -0.3V 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, 10sec)........................ 260°C
Operating Ratings(3)
Supply Voltage (PVIN, VIN)................................. 4.5V to 28V
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 MLF®(θJA) .....................................28°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.
Power Supply Input
Input Voltage Range (VIN, PVIN)
Quiescent Supply Current
Shutdown Supply Current
VDD Supply Voltage
VDD Output Voltage
VDD UVLO Threshold
VDD UVLO Hysteresis
Dropout Voltage (VIN â VDD)
DC/DC Controller
Output-Voltage Adjust Range
(VOUT)
Reference
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
VFB = 1.5V (non-switching)
VEN = 0V
VIN = 7V to 28V, IDD = 40mA
VDD Rising
IDD = 25mA
0°C ⤠TJ ⤠85°C (±1.5%)
â40°C ⤠TJ ⤠125°C (±2.0%)
IOUT = 0A to 12A (Continuous Mode)
VIN = 4.5V to 28V
VFB = 0.8V
VEN = 12V
VFB = 0V
VFB = 1.0V
4.5
730
5
4.8
5
3.7
4.2
400
380
0.8
0.792
0.8
0.788
0.8
0.25
0.25
50
1.8
6
450
600
82
0
300
Max.
28
1500
10
5.4
4.5
600
5.5
0.808
0.812
0.6
30
750
Units
V
µA
µA
V
V
mV
mV
V
V
%
%
nA
V
V
µA
kHz
%
%
ns
July 2011
4
M9999-071311-A
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