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ML4900CS Arkusz danych(PDF) 3 Page - Micro Linear Corporation

Numer części ML4900CS
Szczegółowy opis  High Current Synchronous Buck Controller
PDF  8 Pages
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Producent  MICRO-LINEAR [Micro Linear Corporation]
Strona internetowa  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation

ML4900CS Arkusz danych(HTML) 3 Page - Micro Linear Corporation

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ML4900
3
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VDD = 12V, PROTECT = SHDN = 5V, TA = Operating Temperature Range (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE
VREF
Output Voltage
3.51
3.535
3.56
V
Line Regulation
11V < VDD < 13V
0.5
mV/V
UV LOCKOUT
VDD Start-up Threshold
10.2
10.5
10.8
V
VDD Hysteresis
300
450
600
mV
PROTECT (5V) Start-up Threshold
4.25
4.4
4.5
V
PROTECT (5V) Hysteresis
400
450
500
mV
SHUTDOWN
Input Low Voltage
0.8
V
Input High Voltage
2.0
V
Delay to Output
50
ns
POWER GOOD COMPARATOR
Output Voltage in Regulation
5k
W pull-up to 5V
4.8
V
Output Voltage out of Regulation
VFB < 90% VDAC or >110% VDAC
0.4
V
Output Voltage in Shutdown
SHDN = 0V, 5k
W pull-up to 5V
0.4
V
BUCK REGULATOR
Oscillator Frequency
160
200
230
kHz
Duty Cycle Ratio
DAC (D3-D0) Code = 0100,
85
95
%
VFB = 0V
DAC (D3-D0) Code = 0100,
0
%
VFB > 3.193V
DAC (D3-D0) Input Low Voltage
0.8
V
DAC (D3-D0) Input High Voltage
2.0
V
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
VDD .......................................................................................... 13.5V
Peak Driver Output Current ....................................... ±2A
VFB Voltage....................................... GND - 0.3V to 5.5V
ISENSE Voltage ................................... GND - 0.5V to 5.5V
All Other Analog Inputs .......... GND - 0.3V to VDD + 0.3V
SHDN Input Current .............................................. 100
mA
Junction Temperature .............................................. 150ºC
Storage Temperature Range ...................... –65ºC to 150ºC
Lead Temperature (Soldering, 10 sec) ...................... 260ºC
Thermal Resistance (
qJA)
16-Pin Narrow SOIC ...................................... 100ºC/W
20-Pin TSSOP ................................................. 143ºC/W
OPERATING CONDITIONS
Temperature Range ........................................ 0ºC to 70ºC
VDD Range ............................................... 11.4V to 12.6V
PROTECT (5V Supply) Range .................... 4.75V to 5.25V



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