參數(shù)資料
型號(hào)： MAX1774
廠商： Maxim Integrated Products, Inc.
英文描述： 32-Bit Digital Signal Controller with ROM 100-BGA MICROSTAR -40 to 125
中文描述： 雙路、高效率、降壓型轉(zhuǎn)換器，帶有備用電池切換開關(guān)
文件頁(yè)數(shù)： 4/21頁(yè)
文件大?。?/td> 398K
代理商： MAX1774
M
Dual, High-Effic ienc y, S tep-Down
Converter with Bac kup Battery S witc hover
4
_______________________________________________________________________________________
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
REFERENCE
Reference Voltage
Reference Load Regulation
Reference Line Regulation
Reference Sink Current
CVL, CVH REGULATORS
V
REF
1.23
1.25
1.27
10
5
V
I
REF
= 0 to 50μA
V
CS-
= +2.5V to +5.5V, I
REF
= 50μA
mV
mV
μA
10
I
CVL
= 50mA, V
CS-
= 0
I
CVL
= 50mA, V
CS-
= +3.3V
CS- rising, hysteresis = 100mV typical
2.6
2.8
3.2
2.47
3.1
CVL Output Voltage
V
CVL
V
CVL Switchover Threshold
2.40
2.55
V
V
IN
= +4V, I
CVH
= 25mA
V
IN
-
3.4
V
IN
-
2.8
CVH Output Voltage
V
CVH
V
IN
= +12V, I
CVH
= 50mA
V
IN
-
4.2
V
IN
-
3.7
V
CVH Switchover Threshold
V
IN
V
IN
rising, hysteresis = 350mV typ
V
CVL
rising
V
CVL
falling
5.5
2.47
2.37
V
2.40
2.30
2.55
2.45
CVL Undervoltage Lockout
V
LOW-VOLTAGE COMPARATORS
V
BKOFF
rising
V
BKOFF
falling
V
BKOFF
= +5.5V
V
LBI
falling, hysteresis = 50mV typical
V
DBI
falling, hysteresis = 50mV typical
0.51
0.55
0.59
Backup Regulator Shutdown
Threshold
V
BKOFF
0.46
0.50
0.54
1
1.23
1.23
V
BKOFF
Input Bias Current
LBI Threshold
DBI Threshold
BKUP
Low-Input Threshold
LBI, DBI Input Leakage Current
μA
V
V
V
nA
V
LBI
V
DBI
1.17
1.17
0.4
1.20
1.20
V
LBI
= V
DBI
= +1.3V
100
LBO
,
BKUP
,
ACO
,
MDRV
Output Low
I
SINK
= 1mA
0.4
V
LBO
,
BKUP
,
ACO
,
MDRV
Output Leakage Current
V
LBI
= +1.3V, V
ACI
= +12V, V
ACO
=
V
LBO
= V
BKUP
= +5.5V, V
MDRV
= +28V
V
ACI
– V
INS,
ACI falling
V
ACI
= +1.3V
V
INS
= +3.3V
1.0
μA
ACI Threshold
ACI Input Leakage Current
INS Input Leakage Current
LOGIC INPUTS
0.22
0.35
100
10
V
nA
μA
1.5
SHDNM
,
SHDNC
Input Low
Voltage
0.4
V
SHDNM
,
SHDNC
Input High
Voltage
2.0
V
ELECTRICAL CHARACTERISTICS (continued)
(Figure 1, V
IN
= V
INS
= +12V, V
INC
= V
CS-
= V
CS+
= +3.3V, V
CORE
= +1.8V,
T
A
= 0
°
C to +85
°
C,
unless otherwise noted. Typical values are
at T
A
= +25
°
C.)
相關(guān)PDF資料
PDF描述
MAX1774EEI Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover
MAX1774EMJ 32-Bit Digital Signal Controller with ROM 100-LQFP -40 to 85
MAX1775 32-Bit Digital Signal Controller with ROM 100-LQFP -40 to 125
MAX1775EEE 32-Bit Digital Signal Controller with ROM 100-LQFP -40 to 125
MAX1776 32-Bit Digital Signal Controller with ROM 100-BGA MICROSTAR -40 to 85
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1774EEI 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1774EEI+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Dual Step-Down w/Switchover RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1774EEI+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Dual Step-Down w/Switchover RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1774EEI-T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1774EGJ 制造商:Maxim Integrated Products 功能描述:
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