ML4873 Просмотр технического описания (PDF) - Micro Linear Corporation
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ML4873 Datasheet PDF : 13 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.
Voltage on any pin .................................................... 36V
Output Current Source or Sink (Pins 8, 9, 20, 23) .............
Pulsed .............................................................. 300mA
VG5 Source Current ............................................... 20mA
VG5 Sink Current ................................................. 200mA
12V Linear Regulator Output Current ................... 200mA
5V Linear Regulator Output Current ....................... 50mA
Inputs (Pins 3, 4, 12, 16, 27) .........................–0.3 to 5.5V
ISENSE Inputs (Pins 11, 18) ........................................... VIN
Junction Temperature ............................................. 150°C
ML4873
Storage Temperature Range ..................... –65°C to 150°C
Lead Temperature (Soldering 10 Sec.) ..................... 260°C
Thermal Resistance (θJA) Plastic SOIC ............ 70°C/W
Thermal Resistance (θJA) Plastic SSOP ............ 80°C/W
OPERATING CONDITIONS
Temperature Range
Commercial ............................................... 0°C to 70°C
VIN Voltage Range ......................................... 5.4V to 30V
VGT Voltage Range .................................. VIN –0.5 to 35V
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, TA = Operating Temperature Range, VIN = 12V, V12 IN = 14V, VGT = 22V, RT = 200kΩ (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Oscillator
Initial Accuracy
95
100
105
kHz
Dead Time
Maximum Duty Cycle
50K ≤ RT ≤ 300K
600
800
1000
ns
90
97
%
Voltage Stability
6V ≤ VIN ≤ 20V
2
%
Error Amplifiers
Input Offset Voltage
2
10
mV
Input Bias Current
10
200
nA
Output High Voltage
Output Low Voltage
Source Current
Sink Current
Gain Bandwidth Product
IOUT = –2mA
IOUT = 20µA
VOUT = 2.5V
VOUT = 2.5V
2.7
2.95
V
0.5
V
–5
–7
mA
500
µA
675
kHz
High Side (Out 1) Outputs (Pins 9, 20)
Output High Voltage
IOUT = –20mA
19
21.3
V
Output Low Voltage
Low Side (Out 2) Outputs (Pins 8, 23)
IOUT = 20mA
0.2
0.5
V
Output High Voltage
Output Low Voltage
Soft Start and Current Limit (Pins 11, 17, 18)
IOUT = –20mA
IOUT = 20mA
10
V
0.2
0.5
V
Voltage Threshold
Bias Current
Soft Start ICHARGE
Soft Start IDISCHARGE
From VIN
VISENSE = VIN –200mV
–250
–200
–150
mV
27
75
µA
–6
–13
–20
µA
3
6.2
mA
3
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