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MAX17670BATB+ PDF预览

MAX17670BATB+

更新时间： 2023-01-02 18:00:45
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
25页 1108K
描述
Switching Regulator,

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中文翻译

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MAX17670BATB+ 数据手册

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EVALUATION KIT AVAILABLE  
Click here to ask about the production status of specific part numbers.  
MAX17670, MAX17671,  
MAX17672  
Integrated 4V-60V, 150mA, High-Efficiency,  
Synchronous Step-Down DC-DC Converter  
with 50mA Linear Regulator  
General Description  
Benefits and Features  
The Himalaya series of voltage regulator ICs, power  
modules, and chargers enable cooler, smaller, and sim-  
pler power-supply solutions. MAX17670, MAX17671, and  
MAX17672 are dual-output regulators integrating a 4V  
to 60V, 150mA high-voltage, high-efficiency, Himalaya  
synchronous step-down converter with internal MOSFETs  
and a high-PSRR, low-noise, 2.35V to 5.5V, 50mA linear  
regulator. The MAX17670 and MAX17671 provide fixed  
step-down converter output voltages of 3.3V and 5V,  
respectively. The output voltage of the MAX17672 step-  
● Reduces External Components and Total Cost  
• No Schottky–Synchronous Operation  
• Internal Compensation  
• Built-In Soft-Start  
• All-Ceramic Capacitors, Compact Layout  
•
Protection against Inductive Short at Step-Down  
Converter Output  
● Reduces Number of DC-DC Regulators to Stock  
• Wide 4V to 60V Input Range for the Step-Down  
Converter Regulator  
• Up to 98% Duty-Cycle Step-Down Operation  
• 200kHz to 2.2MHz Adjustable Switching Frequency  
with External Synchronization for Step-down  
Converter  
• 2.35V to 5.5V, Input Range for the Linear Regulator  
• Linear Regulator with up to 50mA Load Current  
Capability  
down converter is adjustable (0.8V up to 90% of V ).  
IN  
3.3V (MAX17671 and MAX17672 only), 3.0V, 2.5V, 1.8V,  
1.5V, and 1.2V linear regulator output voltage options are  
supported. See the Ordering Information for details.  
The feedback-voltage regulation accuracy over -40°C  
to +125°C temperature range for the linear regulator  
is ±1.3% and for the step-down converter is ±2%. The  
devices are available in a compact 10-pin (3mm x 3mm)  
TDFN package. Simulation models are available.  
●
Reduces Power Dissipation  
• 50μA No-Load Supply Current  
Applications  
● Industrial Sensors and Process Control  
● High-Voltage Linear Regulator Replacement  
● Battery-Powered Equipment  
• PFM Enables Enhanced Light-Load Efficiency  
• 2.5μA Shutdown Current  
• Bootstrap Bias Input for Improved Efficiency  
● Reliable Operation in Adverse Environments  
● HVAC and Building Control  
• Peak Current-Limit Protection  
• Built-In Output-Voltage Monitoring with RESET  
• Resistor Programmable EN/UVLO Threshold  
• Monotonic Startup into Prebiased Load  
• Overtemperature Protection  
Ordering Information appears at end of data sheet.  
• High Industrial -40°C to +125°C Ambient Operating  
Temperature Range / -40°C to +150°C Junction  
Temperature Range  
Simplified Application Circuit  
L1  
V
OUT  
V
IN  
IN  
LX  
C1  
C3  
R1  
R2  
GND  
EN/UVLO  
MAX17670/  
MAX17671  
FBBUCK  
RESET  
INL  
OUTL  
V
OUTL  
C2  
MODE/SYNC  
RT  
EP  
19-100364; Rev 2; 4/20  
1234567...25

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