ML4900
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.
Lead Temperature (Soldering, 10 sec) ...................... 260ºC
Thermal Resistance (q )
JA
16-Pin Narrow SOIC ...................................... 100ºC/W
20-PinTSSOP ................................................. 143ºC/W
V
.......................................................................................... 13.5V
DD
Peak Driver Output Current .......................................±2A
OPERATING CONDITIONS
V
SENSE
Voltage....................................... GND - 0.3V to 5.5V
Voltage ................................... GND - 0.5V to 5.5V
FB
I
All Other Analog Inputs ..........GND - 0.3V to V + 0.3V
Temperature Range........................................ 0ºC to 70ºC
DD
PROTECT (5V Supply) Range .................... 4.75V to 5.25V
DD
SHDN Input Current.............................................. 100mA
JunctionTemperature .............................................. 150ºC
Storage Temperature Range...................... –65ºC to 150ºC
V
Range ............................................... 11.4V to 12.6V
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V = 12V, PROTECT = SHDN = 5V, T = Operating Temperature Range (Note 1)
DD
A
SYMBOL
REFERENCE
VREF
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage
Line Regulation
UV LOCKOUT
VDD Start-up Threshold
3.51
3.535
0.5
3.56
V
11V < VDD < 13V
mV/V
10.2
300
4.25
400
10.5
450
4.4
10.8
600
4.5
V
mV
V
VDD Hysteresis
PROTECT (5V) Start-up Threshold
PROTECT (5V) Hysteresis
450
500
mV
SHUTDOWN
Input Low Voltage
Input High Voltage
0.8
V
V
2.0
4.8
Delay to Output
50
ns
POWER GOOD COMPARATOR
Output Voltage in Regulation
5kW pull-up to 5V
V
V
V
Output Voltage out of Regulation
Output Voltage in Shutdown
VFB < 90% VDAC or >110% VDAC
SHDN = 0V, 5kW pull-up to 5V
0.4
0.4
BUCK REGULATOR
Oscillator Frequency
Duty Cycle Ratio
160
85
200
230
95
kHz
%
DAC (D3-D0) Code = 0100,
VFB = 0V
DAC (D3-D0) Code = 0100,
VFB > 3.193V
0
%
DAC (D3-D0) Input Low Voltage
DAC (D3-D0) Input High Voltage
0.8
V
V
2.0
3
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
