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MAX17085BETL+T

更新时间： 2024-11-24 13:10:23
品牌 Logo 应用领域
美信 - MAXIM 稳压器控制器
页数 文件大小 规格书
37页 3202K
描述
Switching Regulator, Current-mode, 800kHz Switching Freq-Max, BICMOS, TQFN-40

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MAX17085BETL+T 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVQCCN, LCC40,.2SQ,16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01Factory Lead Time：6 weeks
风险等级：2.32其他特性：ALSO HAS 5V OUTPUT; ALSO OPERATES AS LDO REGULATOR
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：24 V
最小输入电压：4.5 V标称输入电压：19 V
JESD-30 代码：S-XQCC-N40JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：1端子数量：40
最高工作温度：85 °C最低工作温度：-40 °C
标称输出电压：3.3 V封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC40,.2SQ,16
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：5 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Power Management Circuits最大供电电流 (Isup)：1.5 mA
标称供电电压 (Vsup)：5 V表面贴装：YES
切换器配置：BUCK最大切换频率：800 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.4 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：5 mm
Base Number Matches：1

MAX17085BETL+T 数据手册

 浏览型号MAX17085BETL+T的Datasheet PDF文件第2页浏览型号MAX17085BETL+T的Datasheet PDF文件第3页浏览型号MAX17085BETL+T的Datasheet PDF文件第4页浏览型号MAX17085BETL+T的Datasheet PDF文件第5页浏览型号MAX17085BETL+T的Datasheet PDF文件第6页浏览型号MAX17085BETL+T的Datasheet PDF文件第7页 
19-5135; Rev 0; 1/10  
Integrated Charger, Dual Main Step-Down  
Controllers, and Dual LDO Regulators  
General Description  
Features  
S All-in-One Charger Plus Dual Main Step-Down  
The MAX17085B is an all-in-one notebook power solution  
integrating a multichemistry battery charger, dual fixed-  
output Quick-PWMK step-down controllers, and dual  
keep-alive linear regulators:  
Controllers  
S 5V/100mA and 3.3V/50mA LDO Regulators  
S Main  
Charger: The high-frequency (~1.4MHz) multichem-  
istry battery charger uses a current-mode, fixed  
inductor current ripple architecture that significantly  
reduces component size and cost. Low-offset sense  
amplifiers allow the use of low-value sense resistors  
for charging and input current limit.  
Dual Quick-PWM with Fast Transient Response  
and Extended On-Time  
300kHz to 800kHz Switching Frequency  
Fixed 5V and 3.3V SMPS Outputs  
Low-Noise Ultrasonic Mode  
Autoretry Fault Protection  
The charger uses n-channel switching MOSFETs.  
Adjustable charge current, charge voltage, and cell  
selection allow for flexible use with different battery  
packs. Charge current is set by an analog control input,  
or a PWM input. High-accuracy current-sense ampli-  
fiers provide fast cycle-by-cycle current-mode control to  
protect against short circuits to the battery and respond  
quickly to system load transients. Additionally, the char-  
ger provides a high-accuracy analog output that is pro-  
portional to the adapter current.  
S Charger  
High Switching Frequency (1.4MHz)  
Selectable 2-, 3-, and 4-Cell Battery Voltage  
Automatic Selection of System Power Source  
Internal Charge-Pump for Adapter n-Channel  
MOSFETs Drive  
Q0.4% Accurate Charge Voltage  
Q2.5% Accurate Input Current Limiting  
Q3% Accurate Charge Current  
S Monitor Outputs for  
An integrated charge pump controls an n-channel  
adapter selector switch. The charge pump remains  
active even when the charger is off. When the adapter  
is absent, a p-channel MOSFET selects the battery.  
AC Adapter Current (Q2% Accuracy)  
Battery Discharge Current (Q2% Accuracy)  
AC Adapter OK  
S Analog/PWM (100Hz to 500kHz) Adjustable  
Main SMPS: The dual Quick-PWM step-down con-  
trollers with synchronous rectification generate  
the 5V and 3.3V main power in a notebook. Low-  
side MOSFET sensing provides a simple low-cost,  
highly efficient valley current-limit protection. The  
MAX17085B also includes output undervoltage, out-  
put overvoltage, and thermal-fault protection.  
Charge Current Setting  
S AC Adapter Overvoltage and Overcurrent  
Protection  
Applications  
Notebook Computers  
PDAs and Mobile Communicators  
5V and 3.3V Supplies  
Separate enable inputs for each SMPS and a com-  
bined open-drain power-good output allow flex-  
ible power sequencing. Voltage soft-start reduces  
inrush current, while passive shutdown discharges  
the output through an internal switch. Fast transient  
response, with an extended on-time feature reduces  
output capacitance requirements. Selectable pulse-  
skipping mode and ultrasonic mode improve light-  
load efficiency. Ultrasonic mode operation maintains  
a minimum switching frequency at light loads, mini-  
mizing audible noise effects.  
2-to-4, Li+-Cell, Battery-Powered Devices  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX17085BETL+  
-40°C to +85°C  
40 TQFN-EP*  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Dual LDO Regulators: An internal 5V/100mA LDO5 with  
switchover can be used to either generate the 5V bias  
needed for power-up or other lower power “always-on”  
suspend supplies. Another 3.3V/50mA LDO3 provides  
“always-on” power to a system microcontroller.  
Pin Configuration appears at end of data sheet.  
Quick-PWM is a trademark of Maxim Integrated Products, Inc.  
_______________________________________________________________ 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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MAX17085BETL+T 替代型号

型号 品牌 替代类型 描述 数据表
MAX17085BETL+ MAXIM

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