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| 型号： | MAX15109EWP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 8A 20WLP |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 可编程 |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 8A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 包装： | * |
| 供应商设备封装： | * |
EVALUA
AVAILAB
19-5918; Rev 1; 8/11
TION KIT
LE
High-Efficiency, 8A, Current-Mode Synchronous
Step-Down Switching Regulator with VID Control
General Description
The MAX15109 high-efficiency, current-mode, synchro-
nous step-down switching regulator with integrated
power switches deliver up to 8A of output current. This
regulator operates from 2.7V to 5.5V and provides four
output voltages using two VID control inputs.
This IC utilizes a current-mode control architecture
with a high gain transconductance error amplifier.
The current-mode control architecture facilitates easy
compensation design and ensures cycle-by-cycle
current limit with fast response to line and load transients.
This regulator offers skip-mode functionality to reduce
current consumption and achieve a higher efficiency at
light loads. The low R DS(ON) integrated switches ensure
high efficiency at heavy loads while minimizing critical
inductance, making the layout design a much simpler
task with respect to discrete solutions. The high switching
frequency (1MHz), along with the PWM current-mode archi-
tecture allows for a compact, all-ceramic capacitor design.
The IC features a capacitor-programmable slew-rate
control to reduce input current at the startup and when
the output changes state under VID control. Internal
control circuitry ensures safe-startup into a prebiased
output. Power sequencing is controlled with the enable
input and power-good output.
The IC is available in a 20-bump (4 x 5 array), 2.5mm x
2mm, WLP package and is fully specified over the -40 N C
to +85 N C temperature range.
Features
S Continuous 8A Output Current
S Efficiency Over 90%
S ± 1% Accuracy Over Load, Line, and Temperature
S Operates from a 2.7V to 5.5V Supply
S VID Control Inputs for Selecting Output Voltage
S Programmable Slew-Rate Control
S Safe Startup into Prebiased Output
S 1MHz Switching Frequency
S Stable with Low-ESR Ceramic Output Capacitors
S Enable Input and Power-Good Output for Power-
Supply Sequencing
S Cycle-by-Cycle Overcurrent Protection Faults
S Fully Protected Against Overcurrent and
Overtemperature
S Input Undervoltage Lockout
S 20-Bump (4 x 5 Array), 2.5mm x 2mm, WLP
Package
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX15109EWP+ -40 N C to +85 N C 20 WLP
+ Denotes a lead(Pb)-free/RoHS-compliant package.
Distributed Power Systems
DDR Memory
Applications
Typical Operating Circuit
Notebook Power
2.7V TO
5.5V
VID0
VID1
VID0
VID1
LX
FB
OUTPUT
IN
PGND
MAX15109
INX
COMP
PGOOD
SS
_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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