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MAX1830 Fiches technique(PDF) 4 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) 4 Page - Maxim Integrated Products

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100
50
0.001
0.01
0.1
1
10
EFFICIENCY vs. OUTPUT CURRENT
(VIN = 5.0V, L = 1.5
µH)
60
OUTPUT CURRENT (A)
70
80
90
85
75
65
55
95
VOUT = 1.8V
RTOFF = 75k
VOUT = 1.5V
RTOFF = 82k
VOUT = 3.3V
RTOFF = 39k
100
50
0.001
0.01
0.1
1
10
EFFICIENCY vs. OUTPUT CURRENT
(VIN = 3.3V, L = 1.5
µH)
60
OUTPUT CURRENT (A)
70
80
90
85
75
65
55
95
VOUT = 1.5V
RTOFF = 62k
VOUT = 1.8V
RTOFF = 51k
VOUT = 2.5V
RTOFF = 39k
100
50
0.001
0.01
0.1
1
10
EFFICIENCY vs. OUTPUT CURRENT
(fPWM = 300kHz)
60
OUTPUT CURRENT (A)
70
80
90
85
75
65
55
95
VOUT = 1.8V
VIN = 3.3V
RTOFF = 160k
L = 2.5
µH
VOUT = 1.8V
VIN = 5.0V
RTOFF = 220k
L = 5.2
µH
3A, 1MHz, Low-Voltage, Step-Down Regulators with
Synchronous Rectification and Internal Switches
4
_______________________________________________________________________________________
Typical Operating Characteristics
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VCC = +3.3V, FBSEL = GND, TA = -40°C to +85°C, unless otherwise noted.) (Note 5)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Adjustable Output Voltage Range
VCC = VIN = +3V to +5.5V, ILOAD = 0, FBSEL
= GND
VREF
VIN
V
Reference Voltage
VREF
1.078
1.122
V
Current-Limit Threshold
ILIMIT
3.9
5.4
A
Idle Mode Current Threshold
IIM
0.14
1.0
A
VIN = 4.5V
90
PMOS Switch On-Resistance
RON, P
ILX = 0.5A
VIN = +3V
110
VIN = 4.5V
95
NMOS Switch On-Resistance
RON, N
ILX = 0.5A
VIN = +3V
100
m
No-Load Supply Current
IIN + ICC
VFB = 1.2V
750
µA
FB Input Bias Current
IFB
VFB = 1.2V
0
360
nA
Off-Time
tOFF
RTOFF = 110k
0.8
1.2
µs
Note 2: Not production tested.
Note 3: Soft-start time is measured with respect to the number of cycles on LX.
Note 4: This is a metal migration limit. Maximum output current may be limited by thermal capability to a lower value than this.
Note 5: Specifications from 0°C to -40°C are guaranteed by design, not production tested.


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