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MAX1705 Fiches technique(PDF) 5 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
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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) 5 Page - Maxim Integrated Products

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1- to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
_______________________________________________________________________________________
5
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 = -40°C to +85°C, unless otherwise noted, Note 4.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
LBN, LBP Common-Mode
Input Range
0.5
1.5
V
CONDITIONS
LBN = 0.5V and 1.5V (at least one input must
be within this range)
LBO High Leakage
1
µA
LBO = OUT = 5V
Input Low Level
0.15VOUT
V
1.2V < VOUT < 5.5V, ONA, ONB (Note 2)
0.85VOUT
1.2V < VOUT < 5.5V, ONA, ONB (Note 2)
Internal Oscillator Frequency
260
340
kHz
CLK/SEL = OUT
External Oscillator
Synchronization Range
200
400
kHz
0.85VOUT
VOUT = 5.5V, CLK/SEL, TRACK
Note 1: Once the output is in regulation, the MAX1705/MAX1706 operate down to a 0.7V input voltage.
Note 2: The device is in start-up mode when VOUT is below this value (see Low-Voltage Start-Up Oscillator section).
Note 3: ONA and ONB inputs have a hysteresis of approximately 0.15VOUT.
Note 4: Specifications to -40°C to are guaranteed by design, not production tested.
Input High Level
VOUT = 2.5V, CLK/SEL, TRACK
0.15VOUT
V
LBN, LBP Offset
-5
5
mV
LBP falling
FBLDO Regulation Voltage
1.233
1.268
V
FBLDO = LDO, ILOAD = 1mA
Short-Circuit Current Limit
220
600
mA
FBLDO = LDO = GND
FBLDO Input Current
0.01
50
nA
VFBLDO = 1.5V
Dropout Resistance
1.2
VFBLDO = 1V, ILDO = 200mA
LINEAR REGULATOR
CONTROL INPUTS
LOW-BATTERY COMPARATOR


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