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MAX1705 Fiches technique(PDF) 4 Page - Maxim Integrated Products

No de pièce MAX1705
Description  1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator
Download  20 Pages
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Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1705 Fiches technique(HTML) 4 Page - Maxim Integrated Products

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1- to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VOUT = VPOUT = VLBP = 3.6V, CLK/SEL = FB = LBN = LBO = ONA = ONB = TRACK = GND, REF = open (bypassed with 0.22µF),
LX = open, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
ELECTRICAL CHARACTERISTICS
(VOUT = VPOUT = VLBP = 3.6V, CLK/SEL = FB = LBN = LBO = ONA = ONB = TRACK = GND, REF = open (bypassed with 0.22µF),
LX = open, TA = -40°C to +85°C, unless otherwise noted, Note 4.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Minimum CLK/SEL Pulse
Internal Oscillator Frequency
260
300
340
kHz
200
ns
Maximum CLK/SEL
Rise/Fall Time
100
ns
CONDITIONS
CLK/SEL = OUT
Supply Current in
Low-Power Mode
IOUT
190
µA
CLK/SEL = 0V, FB = FBLDO = 1.5V, no load
Supply Current in Shutdown
IOUT
20
µA
ONA = 0V, ONB = OUT, measure IOUT
OUT Voltage in Track Mode
VLDO +
VLDO +
0.2
0.4
V
TRACK = OUT, VLDO > 2.3V
250
570
MAX1706
MAX1706
CLK/SEL = OUT
CLK/SEL = 0V
MAX1705
CLK/SEL = OUT
CLK/SEL = 0V
0.28
MAX1705
Switch On-Resistance
0.45
N-channel, ILX = 100mA
550
950
N-Channel MOSFET
Current Limit
ILIM
1000
1700
mA
CLK/SEL = OUT
250
570
0.50
CLK/SEL = 0V
P-channel, ILX = 100mA
PARAMETER
SYMBOL
MIN
TYP
MAX
P-Channel Synchronous-
Rectifier Turn-Off Current
UNITS
CONDITIONS
20
120
mA
Start-Up to Normal Mode
Transition Voltage
2.0
2.3
V
FB Regulation Voltage
1.215
1.251
V
CLK/SEL = OUT
Reference Output Voltage
1.235
1.265
V
IREF = 0µA
Oscillator Maximum Duty Cycle
80
86
90
%
External Oscillator
Synchronization Range
200
400
kHz
Supply Current in
Low-Noise Mode
IOUT
360
µA
CLK/SEL = OUT, VFB = VFBLDO = 1.5V,
no load
DC-DC CONVERTER
REFERENCE
DC-DC CONVERTER


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