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参数资料
型号： ADP1872-BL2-EVZ
厂商： Analog Devices Inc
文件页数： 2/40页
文件大小： 0K
描述： EVAL BOARD FOR ADP1872
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： ADP1872

ADP1872/ADP1873
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Typical Applications Circuit............................................................ 1
General Description ......................................................................... 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
ADP1872/ADP1873 Block Digram.............................................. 17
Theory of Operation ...................................................................... 18
Startup .......................................................................................... 18
Soft Start ...................................................................................... 18
Precision Enable Circuitry ........................................................ 18
Undervoltage Lockout ............................................................... 18
Thermal Shutdown..................................................................... 18
Programming Resistor (RES) Detect Circuit .......................... 19
Valley Current-Limit Setting .................................................... 19
Hiccup Mode During Short Circuit ......................................... 20
Synchronous Rectifier ................................................................ 21
Power Saving Mode (PSM) Version (ADP1873) .................... 21
REVISION HISTORY
7/12—Rev. A to Rev. B
Changed R ON = 15 mΩ/100 kΩ Valley Current Level Value from
7.5 to 3.87; Table 6 .......................................................................... 20
Changes to Ordering Guide .......................................................... 40
3/10—Rev. 0 to Rev. A
Changes to Figure 1 .......................................................................... 1
Changes to Table 1 ............................................................................ 3
Changes to Table 2 ............................................................................ 5
Changes to Figure 59 Caption and Figure 60 Caption .............. 16
Changes to Figure 64 ...................................................................... 17
Changes to Timer Operation Section .......................................... 22
Data Sheet
Timer Operation ........................................................................ 21
Pseudo-Fixed Frequency ........................................................... 22
Applications Information .............................................................. 23
Feedback Resistor Divider ........................................................ 23
Inductor Selection ...................................................................... 23
Output Ripple Voltage (ΔV RR ) .................................................. 23
Output Capacitor Selection....................................................... 23
Compensation Network ............................................................ 24
Efficiency Consideration ........................................................... 25
Input Capacitor Selection .......................................................... 26
Thermal Considerations............................................................ 27
Design Example .......................................................................... 27
External Component Recommendations .................................... 30
Layout Considerations ................................................................... 32
IC Section (Left Side of Evaluation Board) ............................. 37
Power Section ............................................................................. 37
Differential Sensing .................................................................... 37
Typical Application Circuits ......................................................... 38
Dual-Input, 300 kHz High Current Application Circuit ...... 38
Single-Input, 600 kHz Application Circuit ............................. 38
Dual-Input, 300 kHz High Current Application Circuit ...... 39
Outline Dimensions ....................................................................... 40
Ordering Guide .......................................................................... 40
Changes to Table 9.......................................................................... 31
Changes to Figure 82...................................................................... 32
Changes to Figure 83...................................................................... 33
Changes to Figure 84...................................................................... 34
Changes to Figure 85...................................................................... 35
Changes to Figure 86...................................................................... 36
Changes to Differential Sensing Section and Figure 88 ............ 37
Changes to Figure 89 and Figure 90............................................. 38
Changes to Figure 91...................................................................... 39
Updated Outline Dimensions ....................................................... 40
10/09—Revision 0: Initial Version
Changes to Table 7 .......................................................................... 23
Changes to Inductor Section ......................................................... 28
Rev. B | Page 2 of 40
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参数描述
ADP1873-0.3-EVALZ 功能描述:BOARD EVAL FOR ADP1873-0.3 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
ADP1873-0.6-EVALZ 功能描述:BOARD EVAL FOR ADP1873-0.6 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
ADP1873-1.0-EVALZ 功能描述:BOARD EVAL FOR ADP1873-1.0 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
ADP1873ARMZ-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:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF)
ADP1873ARMZ-0.6-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:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:100% 电源电压:8.2 V ~ 30 V 降压:无 升压:无 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:0°C ~ 70°C 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 产品目录页面:1316 (CN2011-ZH PDF)
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