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MAX1830 Fiches technique(PDF) 3 Page - Maxim Integrated Products

No de pièce MAX1830
Description  3A, 1MHz, Low-Voltage, Step-Down Regulators with Synchronous Rectification and Internal Switches
Download  13 Pages
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Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1830 Fiches technique(HTML) 3 Page - Maxim Integrated Products

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3A, 1MHz, Low-Voltage, 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.)
ELECTRICAL CHARACTERISTICS
(VIN = VCC = +3.3V, FBSEL = GND, TA = -40°C to +85°C, unless otherwise noted.) (Note 5)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage
VIN, VCC
3.0
5.5
V
FBSEL = VCC
2.475
2.575
FBSEL =
unconnected
1.485
1.545
FBSEL = REF
(MAX1830)
1.782
1.854
VIN = +3V to +5.5V,
ILOAD = 0 to 3A,
VFB = VOUT
FBSEL = GND
1.078
1.122
Preset Output Voltage
VOUT
VIN = +3.7V to +5.5V,
ILOAD = 0 to 3A,
VFB = VOUT
FBSEL = REF
(MAX1831)
3.267
3.399
V
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SHDN = GND, into VCC and IN pins; LX = 0
or 3.3V
0.2
20
SHDN = GND, into IN with LX = 0
0.2
20
Shutdown Supply Current
SHDN = GND, into IN with LX = 3.3V
0.1
20
µA
Thermal Shutdown Threshold
TSHDN
Hysteresis = 15
°C
165
°C
Undervoltage Lockout Threshold
VUVLO
VIN falling, hysteresis = 90mV
1.8
2.6
2.8
V
FB Input Bias Current
IFB
VFB = 1.2V
0
70
300
nA
RTOFF = 110k
0.85
1.00
1.15
µs
RTOFF = 44k
0.3
0.4
0.5
µs
Off-Time
tOFF
RTOFF = 440k
3.0
3.9
5.0
µs
Startup Off-Time
4 tOFF
µs
Minimum On-Time
tON
(Note 2)
0.40
µs
Soft-Start Time (Note 3)
3 256
cycles
SHDN Input Current
ISHDN
SHDN = 0 or VCC
-0.5
0.5
µA
SHDN Logic Input Low Voltage
VIL
0.8
V
SHDN Logic Input High Voltage
VIH
2.0
V
FBSEL Input Current
-5
5
µA
FBSEL = GND
0.2
V
FBSEL = REF
0.9
1.3
V
FBSEL = unconnected
0.7 VCC
- 0.2
0.7 VCC
+ 0.2
V
FBSEL Logic Thresholds
FBSEL = VCC
VCC - 0.2
VCC + 0.2
V


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