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| 型号： | MAX8649BEWE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/31页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 1.8A 16WLP |
| 产品培训模块： | Lead (SnPb) Finish for COTS 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： | 0.75 V ~ 1.38 V |
| 输入电压： | 2.5 V ~ 5.5 V |
| 频率 - 开关： | 3.25MHz |
| 电流 - 输出： | 1.8A |
| 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： | 16-UFBGA，WLCSP |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-WLP（2x2） |
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19-4504; Rev 4; 6/11
ATION
EVALU
AVAILA
KIT
BLE
1.8A Step-Down Regulator with
Remote Sense in 2mm x 2mm WLP
General Description
The MAX8649/MAX8649A high-efficiency DC-to-DC step-
down switching regulators deliver up to 1.8A of output cur-
rent. The device operates from a 2.5V to 5.5V input
voltage range, making it future proof for next-generation
battery technologies. The output voltage is I 2 C program-
mable from 0.75V to 1.38V. Remote sense ensures pre-
cise DC regulation at the load. Total output error is less
than 2% over load, line, and temperature.
The ICs operate at a 3.25MHz fixed frequency. The high
operating frequency minimizes the size of external com-
ponents. The switching frequency of the converter can be
synchronized to the master clock of the application. When
synchronizing to an external clock, the ICs measure the
frequency of the external clock to ensure that the clock is
stable before changing the switching frequency to the
external clock frequency.
An on-board DAC allows adjustment of the output volt-
age in 10mV steps. The output voltage can be pro-
grammed directly through the I 2 C interface, or by
preloading a set of on-board registers and using the
two VID logic signals to select the appropriate register.
Other features include internal soft-start control circuitry
to reduce inrush current, output overvoltage, overcur-
Features
o 1.8A Guaranteed Output Current
o I 2 C Programmable V OUT (750mV to 1.38V in 10mV
Steps)
o Operates from 2.5V to 5.5V Input Supply
o On-Chip FET and Synchronous Rectifier
o Fixed 3.25MHz PWM Switching Frequency
o Synchronizes to 13MHz, 19.2MHz, or 26MHz
System Clock when Available
o Small 1.0 μ H Inductor
o Initial Accuracy 0.5% at 1.25V Output
o 2% Output Accuracy Over Load, Line, and
Temperature
o Power-Save Mode Increases Light Load Efficiency
o Overvoltage and Overcurrent Protection
o Thermal Shutdown Protection
o 400kHz I 2 C Interface
o < 1 μ A Shutdown Current
o 16-Bump, 2mm x 2mm WLP Package
Ordering Information
rent, and overtemperature protection.
The ICs feature different I 2 C addresses so that devices
PART
PIN-PACKAGE
I 2 C ADDRESS
(WRITE/READ)
may be used in a system. For a 2.5A version of this
device, refer to the MAX8952 data sheet.
MAX8649 EWE+T 16 WLP (0.5mm pitch)
MAX8649A EWE+T 16 WLP (0.5mm pitch)
0xC0/0xC1
0xC4/0xC5
Applications
Cell Phones and Smartphones
PDAs and MP3 Players
Bump Configuration
TOP VIEW
+Denotes a lead(Pb)-free/RoHS-compliant package.
Note: All devices operate over the -40°C to +85°C temperature
range.
Typical Operating Circuit
+
IN1
(BUMPS ON BOTTOM)
AGND VID1
IN2
1.8V TO
3.6V
MAX8649
MAX8649A IN2
2.5V TO
5.5V
A1
A2
A3
A4
0.1 μ F
V DD
1 μ H
10 μ F
0.1 μ F
SNS+
B1
EN
B2
LX
B3
LX
B4
2.5V TO
5.5V
11 Ω
SCL
SDA
LX
PGND
10 μ F
0.1 μ F
V OUT
(0.75V TO
1.38V)
IN1
SNS-
C1
VID0
C2
PGND
C3
PGND
C4
2.2 μ F
0.1 μ F
FSYNC
EN
SNS+
V DD
D1
SDA
D2
SCL
D3
SYNC
D4
VID0
VID1
AGND
SNS-
CPU
WLP 0.5mm PITCH
________________________________________________________________ Maxim Integrated Products
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.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8649EVKIT+ | 制造商:Maxim Integrated Products 功能描述:1.8A STEP-DOWN REGULATOR W/DIFFERENTIAL REMOTE SENSE IN 2MM - Boxed Product (Development Kits) |
| MAX8649EWE+ | 制造商:Maxim Integrated Products 功能描述:1.8A STEP-DOWN REGULATOR W/DIFFEREN - Rail/Tube |
| MAX8649EWE+T | 功能描述:直流/直流开关调节器 1.8A Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX8649SEWE+T | 功能描述:直流/直流开关调节器 1.8A Step-Down Regulator RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX864EEE | 功能描述:电荷泵 Dual-Output Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
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