參數(shù)資料
型號(hào)： MAX1742EEE+T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： 1A/2.7A, 1MHz, Step-Down Regulators with Synchronous Rectification and Internal Switches
中文描述： 4.7 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-16
文件頁(yè)數(shù)： 10/16頁(yè)
文件大?。?/td> 597K
代理商： MAX1742EEE+T
MAX1742/MAX1842
1A/2.7A, 1MHz, Step-Down Regulators with
Synchronous Rectification and Internal Switches
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VCC = 3.3V, FBSEL = GND, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX1742
1.3
1.5
1.7
Current-Limit Threshold
ILIMIT
MAX1842
3.1
3.6
4.1
A
RMS LX Output Current
3.1
A
MAX1742
0.1
0.3
0.5
Idle Mode Current Threshold
IIM
MAX1842
0.3
0.6
0.9
A
Switching Frequency
f
(Note 2)
1
MHz
No-Load Supply Current
IIN + ICC
VFB = 1.2V
350
600
A
Shutdown Supply Current
ICC(SHDN) SHDN = GND
<1
5
A
PMOS Switch Off-Leakage
Current
IIN
SHDN = GND
15
A
Thermal Shutdown Threshold
TSHDN
Hysteresis = 15°C
160
°C
Undervoltage Lockout Threshold
VUVLO
VIN falling, hysteresis = 90mV
2.5
2.6
2.7
V
FB Input Bias Current
IFB
VFB = 1.2V
0
60
250
nA
RTOFF = 110k
0.9
1.00
1.1
RTOFF = 30.1k
0.24
0.30
0.37
Off-Time Default Period
tOFF
RTOFF = 499k
3.8
4.5
5.2
s
Off-Time Startup Period
tOFF
FB = GND
4 tOFF
s
On-Time Period
tON
(Note 2)
0.4
s
SS Source Current
ISS
4
5
6
A
SS Sink Current
ISS
VSS = 1V
100
A
SHDN Input Current
I SHDN
V SHDN = 0 to VCC
-1
1
A
SHDN Input Low Threshold
VIL
0.8
V
SHDN Input High Threshold
VIH
2.0
V
FBSEL Input Current
-4
+4
A
FBSEL = GND
0.2
FBSEL = REF
0.9
1.3
FBSEL = unconnected
0.7 VCC
- 0.2
0.7 VCC
+0.2
FBSEL Logic Thresholds
FBSEL = VCC
VCC
- 0.2
V
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