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参数资料
| 型号： | ADP2105ACPZ-3.3-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/36页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 3.3V 1A 16LFCSP |
| 产品培训模块： | Powering 90nm/65nm FPGAs and Processors |
| 设计资源： | Powering the AD9788 Using ADP2105 for Increased Efficiency (CN0141) |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN 裸露焊盘，CSP |
| 包装： | 标准包装 |
| 供应商设备封装： | 16-LFCSP-VQ |
| 其它名称： | ADP2105ACPZ-3.3-R7DKR |
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R BOT =
ADP2105/ADP2106/ADP2107
APPLICATIONS INFORMATION
ADIsimPower DESIGN TOOL
The ADP2105/ADP2106/ADP2107 is supported by
ADIsimPower design tool set. ADIsimPower is a collection
of tools that produce complete power designs optimized for a
specific design goal. The tools enable the user to generate a
full schematic, bill of materials, and calculate performance in
minutes. ADIsimPower can optimize designs for cost, area,
efficiency, and parts count while taking into consideration
the operating conditions and limitations of the IC and all
real external components. For more information about
ADIsimPower design tools, refer to www.analog.com/
ADIsimPower. The tool set is available from this website, and
users can also request an unpopulated board through the tool.
EXTERNAL COMPONENT SELECTION
The external component selection for the ADP2105/ADP2106/
depend on input voltage, output voltage, and load current
requirements. Additionally, trade-offs between performance
parameters like efficiency and transient response can be made
by varying the choice of external components.
Data Sheet
SETTING THE OUTPUT VOLTAGE
The output voltage of ADP2105/ADP2106/ADP2107(ADJ) is
externally set by a resistive voltage divider from the output
voltage to FB. The ratio of the resistive voltage divider sets the
output voltage, and the absolute value of those resistors sets the
divider string current. For lower divider string currents, the
small 10 nA (0.1 μA maximum) FB bias current is to be taken
into account when calculating resistor values. The FB bias
current can be ignored for a higher divider string current, but
this degrades efficiency at very light loads.
To limit output voltage accuracy degradation due to FB bias
current to less than 0.05% (0.5% maximum), ensure that the
divider string current is greater than 20 μA. To calculate the
desired resistor values, first determine the value of the bottom
divider string resistor ( R BOT ) using the following equation:
V FB
I STRING
where:
V FB = 0.8 V, the internal reference.
I STRING is the resistor divider string current.
0.1μF
1 0Ω
V IN
INPUT VOLTAGE = 2.7V TO 5.5V
C IN1
V OUT
16
15
14
13
ON
FB
GND IN
PWIN1
OFF
1
EN
LX2 12
OUTPUT VOLTAGE = 1.2V, 1.5V, 1.8V, 3.3V
2
3
GND
GND
ADP2105/
ADP2106/
ADP2107
PGND 11
LX1 10
L
V OUT
C OUT
LOAD
4
GND
PWIN2 9
V IN
COMP
SS
AGND NC
C IN2
R COMP
5
6
C SS
7
8
C COMP
NC = NO CONNECT
Figure 37. Typical Applications Circuit for Fixed Output Voltage Options of ADP2105/ADP2106/ADP2107(x.x V)
Rev. D | Page 16 of 36
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| ADP2105ACPZ-R7 | 功能描述:IC REG BUCK SYNC ADJ 1A 16LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:500 系列:- 类型:切换式电容器（充电泵），反相 输出类型:固定 输出数:1 输出电压:-3V 输入电压:2.3 V ~ 5.5 V PWM 型:Burst Mode? 频率 - 开关:900kHz 电流 - 输出:100mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 包装:带卷 (TR) 供应商设备封装:TSOT-23-6 其它名称:LTC1983ES6-3#TRMTR |
| ADP2105-BL1-EVZ | 功能描述:EVAL BLANK ADISIMPOWER ADP2105 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
| ADP2105-EVAL | 制造商:Analog Devices 功能描述:EVAL KIT FOR 1 AMP/1.5 AMP/2 AMP SYNCH, STEP-DOWN DC-TO-DC C - Bulk |
| ADP2105-EVALZ | 功能描述:BOARD EVAL 2.5V ADJ ADP2105 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ADP2106 | 制造商:AD 制造商全称:Analog Devices 功能描述:1 Amp/1.5 Amp/2 Amp Synchronous, Step-Down DC-to-DC Converters |
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