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MAX25231 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX25231
Description  36V, 1.2A Mini Buck Converter with 3.5關A IQ
PDF  16 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX25231 Datasheet(HTML) 4 Page - Maxim Integrated Products

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Electrical Characteristics (continued)
(VSUP = VEN, VSUP = 14V, VSYNC = 0V, VOUT = 5V, TJ = -40°C to +150°C, unless otherwise noted.) (Notes 3, 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Current
ISUP
VEN = low
1
5
µA
MAX25231ATCB/V+, no load, no
switching
3.5
8
MAX25231ATCB/V+, no load, switching
(Note 2)
4.5
MAX25231ATCA/V+, no load, no
switching
5.6
10
MAX25231ATCA/V+, no load, switching
(Note 2)
6.6
LX Leakage
ILX,LEAK
VSUP = 40V, LX = 0 or 40V, TA = +25°C
-1
+1
µA
Undervoltage Lockout
UVLO
OUT rising
2.52
2.73
2.93
V
Hysteresis
0.16
BIAS Voltage
VBIAS
5.5V ≤ VSUP ≤ 36V, FPWM mode
5
V
BUCK CONVERTER
Voltage Accuracy, 5V
VOUT,5V
MAX25231ATCA/V+ skip mode (Note 2)
4.87
5
5.08
V
MAX25231ATCA/V+ fixed-frequency
PWM mode
4.93
5
5.07
Voltage Accuracy, 3.3V
VOUT,3.3V
MAX25231ATCB/V+, skip mode
3.18
3.3
3.37
V
MAX25231ATCB/V+, fixed-frequency
PWM mode
3.25
3.3
3.35
Output Voltage Range
VOUT
MAX25231ATCD/V+
3
10
V
FB Voltage Accuracy
VFB
MAX25231ATCD/V+ only
0.985
1
1.015
V
FB Current
IFB
VFB = 1V, TA = +25ºC
0.02
μA
FB Line Regulation
VSUP = 6V to 36V
0.02
%/V
High-Side Switch On-
Resistance
RON,HS
VBIAS = 5V, ILX = 1.2A
300
mΩ
Low-Side Switch On-
Resistance
RON,LS
VBIAS = 5V, ILX= 1.2A
200
mΩ
High-Side Current-Limit
Threshold
MAX25231
1.67
1.9
2.13
A
Low-Side Negative
Current- Limit Threshold
INEG
-0.6
A
Soft-Start Ramp Time
ISS
2.5
5
ms
Minimum On-Time
tON
66
85
ns
Maximum Duty Cycle
98
99
%
PWM Switching
Frequency
fSW
Fixed
1.925
2.1
2.275
MHz
Spread-Spectrum
Range
SS
VSPS = 5V
±6
%
PGOOD
PGOOD Threshold,
Rising
VTHR,PGD
VOUT rising
MAX25231ATCA/
V+
90
93.5
97
%
MAX25231
36V, 1.2A Mini Buck Converter with 3.5μA IQ
www.maximintegrated.com
Maxim Integrated | 4



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