參數(shù)資料
型號(hào)： MAX1649ESA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Circular Connector; Body Material:Aluminum Alloy; Series:D38999; No. of Contacts:100; Connector Shell Size:23; Connecting Termination:Grounded; Gender:Male
中文描述： SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO8
封裝： 0.150 INCH, SOP-8
文件頁(yè)數(shù)： 7/12頁(yè)
文件大小： 167K
代理商： MAX1649ESA
M
5V /3.3V or Adjustable, High-Effic ienc y,
Low-Dropout, S tep-Down DC-DC Controllers
_______________________________________________________________________________________
7
S hutdown Mode
When SHDN is high, the MAX1649/MAX1651 enter shut-
down mode. In this mode, the internal biasing circuitry is
turned off (including the reference) and the supply cur-
rent drops to less than 5μA. EXT goes high, turning off the
external MOSFET. SHDN is a logic-level input. Connect
SHDN to GND for normal operation.
Quiesc ent Current
In normal operation, the device's typical quiescent cur-
rent is 78μA. In an actual application, even with no load,
additional current is drawn to supply external feedback
resistors (if used) and the diode and capacitor leakage
currents. In the circuit of Figure 1, with V+ at 5V and
V
OUT
at 3.3V, typical no-load supply current for the
entire circuit is 90μA.
MAX1649
MAX1651
Q
MINIMUM
OFF-TIME
ONE-SHOT
TRIG
Q
MAXIMUM
ON-TIME
ONE-SHOT
TRIG
DUAL-MODE
COMPARATOR
ERROR
COMPARATOR
CURRENT
COMPARATOR
110mV
Q
S
R
FROM V+
FROM V+
CS
EXT
OUT
GND
REF
SHDN
FB
V+
1.5V
REFERENCE
F/F
N
Dual-Mode is a trademark of Maxim Integrated Products
50mV
Figure 2. Block Diagram
相關(guān)PDF資料
PDF描述
MAX1649 5V/3.3V or Adjustable, High-Efficiency,Low-Dropout, Step-Down DC-DC Controllers(5V或可調(diào),降壓型，輸出電流2A,DC-DC變換器,MAX649的改進(jìn)型)
MAX1651CPA 5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
MAX1651CSA 5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
MAX1651EPA 5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
MAX1651ESA 5V/3.3V or Adjustable, High-Efficiency, Low-Dropout, Step-Down DC-DC Controllers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1649ESA+ 功能描述:DC/DC 開(kāi)關(guān)控制器 5/3.3/Adj Low-Drop Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
MAX1649ESA+T 功能描述:DC/DC 開(kāi)關(guān)控制器 5/3.3/Adj Low-Drop Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
MAX1649ESA-T 功能描述:DC/DC 開(kāi)關(guān)控制器 5/3.3/Adj Low-Drop Step-Down RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
MAX1649EVKIT 功能描述:DC/DC 開(kāi)關(guān)控制器 Evaluation Kit for the MAX649 MAX651 MAX652 and MAX1649 MAX1651 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
MAX1649EVKIT-SO 功能描述:DC/DC 開(kāi)關(guān)控制器 3V or Adjustable High-Efficiency Low-Dropout Step-Down DC-DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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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