ML4901CT Просмотр технического описания (PDF) - Micro Linear Corporation
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ML4901CT Datasheet PDF : 8 Pages
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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 .............................................. 100mA
Junction Temperature .............................................. 150ºC
Storage Temperature Range ...................... –65ºC to 150ºC
ML4901
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
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VDD = 12V, PROTECT = SHDN = 5V, TA = Operating Temperature Range (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
REFERENCE
VREF
Output Voltage
Line Regulation
UV LOCKOUT
11V < VDD < 13V
3.51 3.535 3.56
0.5
VDD Start-up Threshold
VDD Hysteresis
PROTECT (5V) Start-up Threshold
10.0
10.4
10.8
300
450
600
4.25
4.4
4.55
PROTECT (5V) Hysteresis
400
450
500
SHUTDOWN
Input Low Voltage
0.8
Input High Voltage
2.0
Delay to Output
50
POWER GOOD COMPARATOR
Output Voltage in Regulation
5kW pull-up to 5V
4.8
Output Voltage out of Regulation
VFB < 90% VDAC or >110% VDAC
0.4
Output Voltage in Shutdown
SHDN = 0V, 5kW pull-up to 5V
0.4
BUCK REGULATOR
Oscillator Frequency
160
200
230
Duty Cycle Ratio
DAC (D3-D0) Code = 0100,
80
90
VFB = 0V
DAC (D3-D0) Code = 0100,
0
VFB > 3.193V
DAC (D3-D0) Input Low Voltage
0.8
DAC (D3-D0) Input High Voltage
2.0
UNITS
V
mV/V
V
mV
V
mV
V
V
ns
V
V
V
kHz
%
%
V
V
3
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