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參數(shù)資料
| 型號： | MAX1858A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual 180?Out-of-Phase Buck Controllers with Sequencing/Prebias Startup and POR |
| 中文描述： | 雙路、180°異相工作的buck控制器，具有排序/預(yù)偏置啟動和POR |
| 文件頁數(shù)： | 2/22頁 |
| 文件大?。?/td> | 553K |
| 代理商： | MAX1858A |
M
Dual 180° Out-of-Phase Buck Controllers with
Sequencing/Prebias Startup and POR
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V+ to GND..............................................................-0.3V to +25V
PGND to GND .......................................................-0.3V to +0.3V
V
L
to GND ..................-0.3V to the lower of +6V and (V+ + 0.3V)
BST1, BST2 to GND ...............................................-0.3V to +30V
LX1 to BST1..............................................................-6V to +0.3V
LX2 to BST2..............................................................-6V to +0.3V
DH1 to LX1..............................................-0.3V to (V
BST1
+ 0.3V)
DH2 to LX2..............................................-0.3V to (V
BST2
+ 0.3V)
DL1, DL2 to PGND........................................-0.3V to (V
L
+ 0.3V)
CKO, REF, OSC, ILIM1, ILIM2,
COMP1, COMP2 to GND..........................-0.3V to (V
L
+ 0.3V)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = 12V, EN = ILIM_ = V
L
, SYNC = GND, I
VL
= 0mA, PGND = GND, C
REF
= 0.22μF, C
VL
= 4.7μF (ceramic), R
OSC
= 60k
,
compensation components for COMP_ are from Figure 1,
T
A
= -40
°
C to +85
°
C
(Note 1), unless otherwise noted.)
PARAMETER
CONDITIONS
GENERAL
(Note 2)
V+ Operating Range
V
L
= V+ (Note 2)
V+ Operating Supply Current
V
L
unloaded, no MOSFETs connected
V+ Standby Supply Current
EN = LX_ = FB_ = 0V
Thermal Shutdown
Rising temperature, typical hysteresis = 10
°
C
ILIM_ = V
L
R
ILIM_
= 100k
Current-Limit Threshold
PGND - LX_
R
ILIM_
= 600k
V
L
REGULATOR
Output Voltage
5.5V < V+ < 23V, 1mA < I
LOAD
< 50mA
V
L
Undervoltage Lockout Rising
Trip Level
V
L
Undervoltage Lockout
Hysteresis
REFERENCE
Output Voltage
I
REF
= 0μA
Reference Load Regulation
0μA < I
REF
< 50μA
SOFT-START
Internal 6-bit DAC for one converter to ramp from 0V to
full scale (Note 4)
Soft-Start Steps
FREQUENCY
0
°
C to +85
°
C
Low End of Range
R
OSC
= 60k
-40
°
C to +85
°
C
High End of Range
R
OSC
= 10k
DH_ Minimum Off-Time
R
OSC
= 10k
FB1, FB2,
RST
, SYNC, EN to GND...........................-0.3V to +6V
VL to GND Short Circuit .............................................Continuous
REF to GND Short Circuit...........................................Continuous
Continuous Power Dissipation (T
A
= +70
°
C)
24-Pin QSOP (derate 9.4mW/
°
C above +70
°
C)...........762mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Junction Temperature......................................................+150
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
MIN
TYP
MAX
UNITS
4.5
4.5
75
32
225
23.0
5.5
6
0.6
125
62
375
V
3.5
0.3
+160
100
50
300
mA
mA
°
C
mV
4.75
5
5.25
V
4.1
4.2
4.3
V
(Note 3)
100
mV
1.98
0
2.00
4
2.02
10
V
mV
Digital Ramp Period
1024
DC-DC
clocks
Steps
64
84
80
540
100
100
600
250
115
120
660
303
kHz
kHz
ns
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1858AEEG | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX1858AEEG+ | 功能描述:電壓模式 PWM 控制器 Dual 180 Out Buck Controllers RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX1858AEEG+T | 功能描述:電壓模式 PWM 控制器 Dual 180 Out Buck Controllers RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX1858AEEG-T | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| MAX1858EEG | 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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