參數(shù)資料
型號: DS232AS-N
廠商: DALLAS SEMICONDUCTOR
元件分類: Line Driver or Receiver
英文描述: LINE TRANSCEIVER, PDSO16
封裝: 0.300 INCH, SOIC-16
文件頁數(shù): 18/23頁
文件大小: 409K
代理商: DS232AS-N
MAX15026
Low-Cost, Small, 4.5V to 28V Wide Operating
Range, DC-DC Synchronous Buck Controller
4
Maxim Integrated
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LIM Reference Current
ILIM
VLIM = 0.3V to 3V (Note 4)
45
50
55
A
LIM Reference Current Tempco
VLIM = 0.3V to 3V
2300
ppm/°C
Number of Consecutive Current-
Limit Events to Hiccup
7
Events
Soft-Start Timeout
4096
Switching
Cycles
Soft-Start Restart Timeout
8192
Switching
Cycles
Hiccup Timeout
Out of soft-start
4096
Switching
Cycles
Peak Low-Side Sink Current
Limit
Sink limit = 1.5V, RLIM = 30k
(Note 4)
75
mV
BOOST
Boost Switch Resistance
VIN = VCC = 5V, IBST = 10mA
3
8
POWER-GOOD OUTPUT
PGOOD Threshold Rising
90
94.5
97.5
%VFB
PGOOD Threshold Falling
88
92
94.5
%VFB
PGOOD Output Leakage
ILEAK_PGD
VIN = VPGOOD = 28V, VEN = 5V, VFB = 1V
-1
+1
A
PGOOD Output Low Voltage
VPGOOD_L
IPGOOD = 2mA, EN = GND
0.4
V
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Temperature rising
+150
°C
Thermal-Shutdown Hysteresis
Temperature falling
20
°C
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 12V, RRT = 27k, RLIM = 30k, CVCC = 4.7F, CIN = 1F, TA = -40°C to +85°C (MAX15026B/CETD+, MAX15026BETD/V+),
TA = TJ = -40°C to +125°C (MAX15026B/C/DATD+), unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
Note 2: All devices are 100% tested at room temperature and guaranteed by design over the specified temperature range.
Note 3: Select RRT as:
where fSW is in Hertz.
Note 4: TA = +25°C.
Note 5: 10ns for MAX15026B, 18ns for the MAX15026C/D.
Note 6: 10ns for MAX15026B, 20ns for the MAX15026C/D.
R
17.3 10
f
1x10 )x(f
RT
9
SW
7
SW
=
×
+
()
2
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