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参数资料
型号： ADP1871-BL2-EVZ
厂商： Analog Devices Inc
文件页数： 2/44页
文件大小： 0K
描述： EVAL BOARD FOR ADP1871
标准包装： 1
主要目的： DC/DC，步降
稳压器拓扑结构： 降压
板类型： 裸（未填充）
已供物品： 裸板
已用 IC / 零件： ADP1871

ADP1870/ADP1871
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Typical Applications Circuit............................................................ 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
Thermal Resistance ...................................................................... 5
Boundary Condition .................................................................... 5
ESD Caution .................................................................................. 5
Pin Configuration and Function Descriptions ............................. 6
Typical Performance Characteristics ............................................. 7
ADP1870/ADP1871 Block Diagram ............................................ 18
Theory of Operation ...................................................................... 19
Startup .......................................................................................... 19
Soft Start ...................................................................................... 19
Precision Enable Circuitry ........................................................ 19
Undervoltage Lockout ............................................................... 19
On-Board Low Dropout Regulator .......................................... 19
Thermal Shutdown ..................................................................... 20
Programming Resistor (RES) Detect Circuit.......................... 20
Valley Current-Limit Setting .................................................... 20
Hiccup Mode During Short Circuit ......................................... 21
Synchronous Rectifier ................................................................ 22
REVISION HISTORY
7/12—Rev. A to Rev. B
Changed R ON = 15 mΩ/100 k? Valley Current Level Value from
7.5 to 3.87; Table 7 .......................................................................... 21
Updated Outline Dimensions ................................................................. 41
6/10—Rev. 0 to Rev. A
Added LFCSP Package ....................................................... Universal
Changes to Applications Section .................................................... 1
Changes to Internal Regulator Characteristics Parameter,
Table 1 ............................................................................................ 3
Data Sheet
Power Saving Mode (PSM) Version (ADP1871).................... 22
Timer Operation ........................................................................ 22
Pseudo-Fixed Frequency ........................................................... 23
Applications Information .............................................................. 24
Feedback Resistor Divider ........................................................ 24
Inductor Selection ...................................................................... 24
Output Ripple Voltage (ΔV RR ) .................................................. 24
Output Capacitor Selection....................................................... 24
Compensation Network ............................................................ 25
Efficiency Considerations ......................................................... 26
Input Capacitor Selection .......................................................... 27
Thermal Considerations............................................................ 28
Design Example .......................................................................... 29
External Component Recommendations .................................... 31
Layout Considerations ................................................................... 33
IC Section (Left Side of Evaluation Board) ............................. 37
Power Section ............................................................................. 37
Differential Sensing .................................................................... 38
Typical Applications Circuits ........................................................ 39
15 A, 300 kHz High Current Application Circuit .................. 39
5.5 V Input, 600 kHz Application Circuit ............................... 39
300 kHz High Current Application Circuit ............................ 40
Outline Dimensions ....................................................................... 41
Ordering Guide .......................................................................... 42
Changes to Table 2 and Table 3........................................................5
Changes to Figure 3 and Table 4......................................................6
Change to Figure 22 ....................................................................... 10
Changes to Figure 65...................................................................... 18
Changes to Efficiency Considerations Section ........................... 26
Changes to Table 9 ..................................................................................... 28
Added Figure 84; Renumbered Sequentially....................................... 28
Added Figure 96 ......................................................................................... 41
Changes to Ordering Guide .................................................................... 42
3/10—Revision 0: Initial Version
Rev. B | Page 2 of 44
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ADP1872 制造商:AD 制造商全称:Analog Devices 功能描述:Synchronous Current-Mode with Constant On-time, PWM Buck
ADP1872-0.3-EVALZ 功能描述:BOARD EVAL FOR ADP1872 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
ADP1872-0.6-EVALZ 功能描述:BOARD EVAL FOR ADP1872 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
ADP1872-1.0-EVALZ 功能描述:BOARD EVAL FOR ADP1872 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
ADP1872ARMZ-0.3-R7 功能描述:IC REG CTRLR BUCK PWM CM 10-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:75 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.3 V ~ 13.5 V 降压:是 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:0°C ~ 70°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:管件 产品目录页面:1051 (CN2011-ZH PDF) 其它名称:296-2543-5
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