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MAX1966, MAX1967
低成本、电压模式、PWM降压型控制器
概述
完整的数据资料
(PDF, 412kB) 英文
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MAX1966/MAX1967是电压模式脉宽调制(PWM)、降压型DC-DC控制器，非常适合那些对成本要求苛刻的应用。这些器件驱动廉价的N沟道MOSFET高端开关和同步整流器，并且不需要外部的肖特基功率二极管或检流电阻。通过检测低端FET的漏-源电压提供短路和限流保护。两款器件都可提供低至0.8V的输出电压，非常适合DSP内核及其他低电压逻辑电路的供电。
关键特性
应用/使用
成本最优化设计
不需要肖特基二极管或检流电阻
效率高于95%
低成本的外部器件
全部采用N沟道场效应管设计
2.7V至5.5V输入电压范围(MAX1966)
2.7V至28V输入电压范围(MAX1967)
0.8V反馈电压可提供低电压输出
100kHz开关频率允许使用低成本元件
热关断
输出限流和短路保护
Key Specifications:
Step-Down Switching Regulators
Part Number
VIN (min) (V)
VIN (max) (V)
Min. VOUT (V)
Max. VOUT (V)
IOUT (A)
Output Adj. Method
Operating Current, ICC (max) (mA)
Number of DC-DC Outputs
Operating Freq. (kHz)
Features
EV-Kit
Package
RoHS Available
Operating Temp. Range (°C)
Price**
MAX1966
2.7
5.5
0.8
4.5
5
Resistor
0.7
1
100
• Fixed Frequency/ PWM Operation
Yes
SOIC/8
Yes
-40 to +85
$0.80 @ 1k
MAX1967
28
uMAX/10
$0.88 @ 1k
See All Step-Down Switching Regulators (223)
Key Specifications:
Switch-Mode DC-DC Power Supplies
Part Number
Topology
VIN (min) (V)
VIN (max) (V)
Number of DC-DC Outputs
Digital/VID Programmed Output
Min. Adjustable VOUT (V)
Max. Adjustable VOUT (V)
IOUT (A)
Operating Current, ICC (max) (mA)
Operating Freq. (kHz)
Internal Power Switch(es)
Package
Price**
MAX1966
Step-Down
2.7
5.5
1
No
0.8
4.5
5
0.7
100
No
SOIC/8
$0.80 @ 1k
MAX1967
28
uMAX/10
$0.88 @ 1k
See All Switch-Mode DC-DC Power Supplies (429)
Notes:
** This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
图表
典型工作电路
参考文献： 19-2286;
Rev. 1;
2003-09-12
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