- 您现在的位置：买卖IC网 > PDF目录5055 > MAX17080GTL+ (Maxim Integrated Products)IC CONTROLLER AMD SVI 40-TQFN PDF资料下载
参数资料
| 型号： | MAX17080GTL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 42/48页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER AMD SVI 40-TQFN |
| 标准包装： | 60 |
| 应用： | 控制器，AMD SVI |
| 输入电压： | 2.7 V ~ 5.5 V |
| 输出数： | 3 |
| 输出电压： | 0.013 V ~ 1.55 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（5x5） |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页当前第42页第43页第44页第45页第46页第47页第48页
AMD 2-/3-Output Mobile Serial
VID Controller
When using low-capacity ceramic filter capacitors,
capacitor size is usually determined by the capacity
needed to prevent V SOAR from causing problems during
load transients. Generally, once enough capacitance is
added to meet the overshoot requirement, undershoot at
the rising load edge is no longer a problem.
NB Transient Droop and Stability
The voltage-positioned load-line of the NB SMPS also
provides the AC ripple voltage required for stability. To
maintain stability, the output capacitive ripple must be
kept smaller than the internal AC ripple voltage. Hence,
a minimum NB output capacitance is required as calcu-
? ? 1 + V
NB Input Capacitor Selection
The input capacitor must meet the ripple-current require-
ment (I RMS ) imposed by the switching currents. The I RMS
lated below:
: C OUT 3 >
2 × f SW 3
1
× R DROOP 3 ( MIN )
? V OUT 3 ?
?
IN 3 ?
I RMS = ? LOAD 3 ? V OUT 3 ( V IN 3 ? V OUT 3 )
? I ?
R PULLUP ≤
requirements can be determined by the following equation:
:
? V IN 3 ?
The worst-case RMS current requirement occurs when
operating with V IN3 = 2V OUT3 . At this point, the above
equation simplifies to I RMS = 0.5 x I LOAD3 .
For most applications, nontantalum chemistries
(ceramic, aluminum, or OS-CON) are preferred due to
their resistance to inrush surge currents typical of sys-
tems with a mechanical switch or connector in series
with the input. The MAX17080 NB regulator is operated
as the second stage of a two-stage power-conversion
system. Tantalum input capacitors are acceptable.
Choose an input capacitor that exhibits less than 10 ° C
temperature rise at the RMS input current for optimal
circuit longevity.
NB Steady-State Voltage Positioning
Voltage positioning dynamically lowers the output volt-
age in response to the load current, reducing the out-
put capacitance and processor ’s power-dissipation
requirements. For NB, the load line is generated by
sensing the inductor current through the high-side
MOSFET on-resistance (R ON(NH3) ), and is internally
preset to -6.5mV/A (typ). This guarantees the output
voltage to stay in the static regulation window over the
maximum load conditions per AMD specifications. See
Table 7 for full-load voltage droop according to differ-
ent ILIM3 settings.
SVD
SVC
S
where R DROOP3(MIN) is 4.5mV/A as defined in the
Electrical Characteristics table, and f SW3 is the NB
switching frequency programmed by the OSC pin.
SVI Applications Information
I 2 C Bus-Compatible Interface
The MAX17080 is a receive-only device. The 2-wire seri-
al bus (pins SVC and SVD) is designed to attach on a
low-voltage I 2 C-like bus. In the AMD mobile application,
the CPU directly drives the bus at a speed of 3.4MHz.
The CPU has a push-pull output driving to the V DDIO
voltage level. External pullup resistors are not required.
When not used in the specific AMD application, the ser-
ial interface can be driven to as high as 2.5V, and can
operate at the lower speeds (100kHz, 400kHz, or
1.7MHz). At lower clock speeds, external pullup resis-
tors can be used for open-drain outputs. Connect both
SVC and SVD lines to V DDIO through individual pullup
resistors. Calculate the required value of the pullup
resistors using:
: t R
C BUS
where t R is the rise time, and should be less than 10% of
the clock period. C BUS is the total capacitance on the bus.
The MAX17080 is compatible with the standard SVI inter-
face protocol as defined in the following subsections.
Figure 11 shows the SVI bus START, STOP, and data
change conditions.
P
START
CONDITION
DATA LINE
STABLE
DATA VALID
CHANGE
OF DATA
ALLOWED
STOP
CONDITION
Figure 11. SVI Bus START, STOP, and Data Change Conditions
42
______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| GBA49DRMS | CONN EDGECARD 98POS .125 SQ WW |
| X5649S14I-2.7A | IC SUPERVISOR CPU 64K EE 14-SOIC |
| X5649S14I-2.7 | IC SUPERVISOR CPU 64K EE 14-SOIC |
| P1330R-333K | INDUCTOR POWER 33.0UH SMD |
| P1330-333K | INDUCTOR POWER 33.0UH SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17080GTL+ | 功能描述:开关变换器、稳压器与控制器 Integrated Circuits (ICs) Voltage Regulators - Special Purpose - IC CONTROLLER AMD SVI 40-TQFN RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MAX17080GTL+T | 功能描述:开关变换器、稳压器与控制器 Integrated Circuits (ICs) Voltage Regulators - Special Purpose - IC CONTROLLER AMD SVI 40-TQFN RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MAX17081EVKIT+ | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX17081EWV+ | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX17081EWV+T | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。