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參數(shù)資料
| 型號： | MAX1705 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator |
| 中文描述： | 1至3節(jié)電池、大電流、低噪聲、升壓型DC-DC轉(zhuǎn)換器，帶有線性穩(wěn)壓器 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 215K |
| 代理商： | MAX1705 |
M
1- to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(V
OUT
= V
POUT
= V
LBP
= 3.6V, CLK/SEL = FB = LBN = LBO = ONA =
ONB
= TRACK = GND, REF = open (bypassed with 0.22μF),
LX = open,
T
A
= -40°C to +85°C,
unless otherwise noted, Note 4.)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
LBN, LBP Common-Mode
Input Range
LBO High Leakage
CONTROL INPUTS
0.5
1.5
V
CONDITIONS
LBN = 0.5V and 1.5V (at least one input must
be within this range)
1
μA
LBO = OUT = 5V
Input Low Level
0.15V
OUT
0.15V
OUT
V
1.2V < V
OUT
< 5.5V, ONA,
ONB
(Note 2)
V
OUT
= 2.5V, CLK/SEL, TRACK
0.85V
OUT
0.85V
OUT
1.2V < V
OUT
< 5.5V, ONA,
ONB
(Note 2)
V
OUT
= 5.5V, CLK/SEL, TRACK
Internal Oscillator Frequency
External Oscillator
Synchronization Range
260
340
kHz
CLK/SEL = OUT
200
400
kHz
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 V
OUT
is below this value (see Low-Voltage Start-Up Oscillatorsection).
Note 3:
ONA and
ONB
inputs have a hysteresis of approximately 0.15V
OUT
.
Note 4:
Specifications to -40°C to are guaranteed by design, not production tested.
Input High Level
V
LBN, LBP Offset
-5
5
mV
LBP falling
FBLDO Regulation Voltage
FBLDO Input Current
1.233
1.268
50
V
FBLDO = LDO, I
LOAD
= 1mA
V
FBLDO
= 1.5V
Short-Circuit Current Limit
Dropout Resistance
LOW-BATTERY COMPARATOR
220
600
1.2
mA
FBLDO = LDO = GND
V
FBLDO
= 1V, I
LDO
= 200mA
0.01
nA
LINEAR REGULATOR
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|---|---|
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