MAX16935RATEB/V 데이터 시트보기 (PDF) - Maxim Integrated
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MAX16935RATEB/V Datasheet PDF : 17 Pages
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MAX16935/MAX16939
36V, 3.5A, 2.2MHz Step-Down Converters
with 28µA Quiescent Current
Electrical Characteristics (continued)
(VSUP = VSUPSW = 14V, VEN = 14V, L1 = 2.2FH, CIN = 4.7FF, COUT = 22FF, CBIAS = 1FF, CBST = 0.1FF, RFOSC = 12kI,
TA = TJ = -40NC to +125NC, unless otherwise noted. Typical values are at TA = +25NC.)
PARAMETER
SYMBOL
EXTERNAL CLOCK INPUT (FSYNC)
External Input Clock
Acquisition time
tFSYNC
CONDITIONS
External Input Clock
Frequency
RFOSC = 12kI (Note 7)
External Input Clock High
Threshold
VFSYNC_HI VFSYNC rising
External Input Clock Low
Threshold
Soft-Start Time
ENABLE INPUT (EN)
Enable Input High Threshold
Enable Input Low Threshold
Enable Threshold Voltage
Hysteresis
Enable Input Current
POWER GOOD (PGOOD)
VFSYNC_LO
tSS
VEN_HI
VEN_LO
VEN_HYS
IEN
VTH_RISING
PGOOD Switching Level
VTH_FALLING
PGOOD Debounce Time
PGOOD Assertion Delay
PGOOD Output Low Voltage
PGOOD Leakage Current
SYNCOUT Low Voltage
SYNCOUT Leakage Current
FSYNC Leakage Current
OVERVOLTAGE PROTECTION
Overvoltage-Protection
Threshold
VFSYNC falling
TA = +25NC
VFB rising, VPGOOD = high
VFB falling, VPGOOD = low
(MAX16935C, VOUT = 5V)
VFB falling, VPGOOD = low
VFB falling, VPGOOD = low (MAX16935C)
VOUT rising edge (MAX16935B)
ISINK = 5mA
VOUT in regulation, TA = +25NC
ISINK = 5mA
TA = +25NC
TA = +25NC
VOUT rising (monitored
at FB pin)
VOUT falling (monitored
at FB pin)
MAX16935
MAX16939
MAX16935
MAX16939
Note 3: Device not in dropout condition.
Note 4: Filter circuit required, see the Typical Application Circuit.
Note 5: Guaranteed by design; not production tested.
Note 6: FB regulation voltage is 1%, 1.01V (max), for -40°C < TA < +105°C.
Note 7: Contact the factory for SYNC frequency outside the specified range.
MIN
1.8
1.4
5.6
2.4
93
4.5
90
90.5
10
200
TYP
1
8
0.2
0.1
95
92
92.5
25
300
107
105
105
102
MAX UNITS
Cycles
2.6
MHz
V
0.4
V
12
ms
V
0.6
V
1
FA
97
94
94.5
50
0.4
1
0.4
1
1
%VFB
V
%VFB
%VFB
Fs
Fs
V
FA
V
FA
FA
%
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