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MAX16491

更新时间： 2024-11-10 14:57:43
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亚德诺 - ADI 开关稳压器
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28页 5275K
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具有可选应用配置的集成式降压型开关稳压器

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MAX16491 数据手册

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Click here to ask an associate for production status of specific part numbers.  
9A, 4.5V to 16V, Integrated Step-Down Switching  
Regulator with Selectable Applications Configurations  
MAX16491  
General Description  
Benefits and Features  
● High-Efficiency Solution with External Bias Supply  
• Up to 96% Peak  
The MAX16491 is a fully integrated, highly efficient,  
step-down DC-DC switching regulator. The device oper-  
ates from 4.5V to 16V input supplies, and the output can  
be adjusted from 0.6V to 5.5V, delivering up to 9A of  
load current. This single-chip regulator provides compact  
high-efficiency power delivery for precision outputs that  
demand fast transient response.  
• Up to 95.5% Full Load  
• Up to 94% Light-Load Efficiency at 1A with DCM  
Enabled  
● Wide Operating Range  
• 4.5V to 16V Input Voltage Range  
• 0.6V to 5.5V Output Voltage Range  
• 9A (max) Load Current  
The device has different programmability options to  
enable a wide range of configurations. The programmable  
features include: internal/external reference voltage,  
output voltage set-point, switching frequency, overcurrent-  
protection level (OCP), and soft-start timing. Discontinuous  
current mode (DCM) operation can be enabled using  
pin-strapping to improve light-load efficiency.  
● Flexible Design Allows Early PCB Definition  
• Footprint Compatible with VT2491 (15A), VT2492  
(25A), and MAX16425 (25A)  
• Programmable Switching Frequency up to 1MHz  
• Programmable Soft-Start and STAT Delay Timings  
• Programmable Reference Voltage with External  
Input Option  
The MAX16491 includes multiple protection and measure-  
ment features. Positive and negative cycle-by-cycle OCP,  
short-circuit protection and overtemperature protection  
(OTP) ensure robust design. Input undervoltage and  
overvoltage lockout shut down the regulator to prevent  
damages when the input voltage is out of specification.  
Regulation is halted in case of an output overvoltage  
(OVP) event. A status pin indicates that the output voltage  
is within range and the outputvoltage is in regulation. The  
device has an analog output that can be configured to  
report output current or junction temperature.  
• Programmable Positive and Negative OCP Limit  
• Supports Current Sourcing and Sinking  
● Advanced Architecture, Protection, and Reporting  
Guarantees Reliable Designs  
• Analog Current or Temperature Reporting  
• Differential Remote Sense with Open-Circuit  
Detection  
• Fast Transient Response with Quick-PWM™  
Architecture  
● Saves Board Space  
• Integrated Boost Switch  
• 19-Bump WLCSP (2.2mm x 2.8mm) Footprint  
• Operation Using Ceramic Input and Output  
Capacitors  
The device is available in a 19-bump (2.2mm x 2.8mm)  
WLCSP package that provides low thermal resistance  
and minimizes the printed circuit board (PCB) area.  
Basic Application Circuit  
Applications  
● Servers/µServers  
INPUT: 4.5V TO 16V  
V : 1.71V TO 1.89V  
CC  
● I/O and Chipset Supplies  
● GPU Core Supply  
C
VCC  
C
IN  
V
V
DDH  
CC  
C
BST  
OUTPUT:  
0.6V TO 5.5V,  
UP TO 9A  
MAX16491  
BST  
VX  
● DDR Memory: V  
, V , and V  
DDQ PP  
TT  
R
STAT  
L
OUT  
● Point-of-Load (PoL) Applications  
RAMP COMPENSATION  
R
C
R
CURRENT  
INPUT  
OUTPUT  
STAT  
SENSE+  
C
R1  
R2  
RATING (A)  
VOLTAGE (V)  
VOLTAGE (V)  
R
OE  
OE  
SENSE-  
GND  
R
FB1  
9
4.5 to 16  
0.6 to 5.5  
AGND  
C
LEAD  
PGM  
R
LAG  
LEAD COMPENSATION  
C_SEL  
C
OUT  
R_SEL  
R
FB2  
C
LAG  
Ordering Information appears at end of data sheet.  
Quick-PWM is a trademark of Maxim Integrated Products, Inc.  
19-100705; Rev 2; 5/23  
©
2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 © 2023 Analog Devices, Inc. All rights reserved.  
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