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参数资料
| 型号： | MAX15118EWI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/23页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 18A 28WLP |
| 产品培训模块： | Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 5.17 V |
| 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： | 18A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFBGA，WLBGA |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 28-WLP（3.5x2） |
MAX15118
High-Efficiency, 18A, Current-Mode Synchronous
Step-Down Regulator with Integrated Switches
Pin Configuration
TOP VIEW
(BUMP ON THE BOTTOM)
MAX15118
+
BST
A1
GND
B1
GND
C1
GND
D1
LX
A2
LX
B2
LX
C2
GND
D2
LX
A3
GND
B3
GND
C3
GND
D3
LX
A4
LX
B4
LX
C4
AIN
D4
IN
A5
IN
B5
IN
C5
IN
D5
PGOOD
A6
N.C.
B6
SKIP
C6
EN
D6
GSNS
A7
FB
B7
SS/REFIN
C7
COMP
D7
WLP
Pin Description
PIN
A1
A2, A3, A4,
B2, B4, C2,
C4
A5, B5, C5,
D5
A6
A7
B1, B3,
C1, C3,
D1, D2, D3
B6
B7
C6
C7
D4
D6
D7
NAME
BST
LX
IN
PGOOD
GSNS
GND
N.C.
FB
SKIP
SS/REFIN
AIN
EN
COMP
FUNCTION
Boost Input for the High-Side Switch Driver. Connect a capacitor from BST to LX.
Inductor Connection. Connect LX to the switching side of the inductor. LX is high impedance when
the MAX15118 is in shutdown mode.
Input Power Supply. Bypass IN to GND with at least two 22 F F low-ESR ceramic capacitors with suf-
ficient ripple current ratings.
Power-Good Open-Drain Output. PGOOD asserts high when V FB is above 0.555V (typ) and
deasserts when V FB falls below 0.530V (typ).
Remote Ground-Sense Input. Connect GSNS to the ground terminal of the load and to the bottom of
the feedback resistors.
Ground Connection. GND is the source terminal of the internal low-side switch. Connect all GND
bumps to a component-side PCB copper ground plane at a single point near the input bypass capac-
itor return terminal.
No Connection. Do not connect.
Feedback Input. Connect FB to the center tap of an external resistor-divider from the output to the
output capacitor return terminal to set the output voltage from 0.6V to 0.94 x V IN .
Skip Mode Selector Input. Connect SKIP to EN for skip mode operation. Connect SKIP to GND
or leave unconnected for continuous mode operation. Do not change the state of SKIP when EN is high.
Soft-Start and External Voltage Reference Input. Connect a capacitor from SS/REFIN to GND to set
the soft-start delay. See the Setting the Soft-Start Time section for more information. To use SS/REFIN
as an external voltage reference, apply a voltage ranging from 0V to (V IN - 2.5V) to SS/REFIN to exter-
nally control the soft-start time and feedback voltage.
Filtered Input Voltage
Enable Input. Drive EN high to enable the MAX15118. Connect EN to IN for always-on operation.
Error Amplifier Output. Connect the compensation network from COMP to GND. See the
Compensation Design Guidelines section for more information.
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