【经验】微控制器监控芯片SGM812可以pin to pin替代CAT824，静态工作电流典型值13uA

时间： 2018-10-06 来源：SGMICRO

技术问答

一般控制芯片都需要稳定可靠的电源供电，一旦供电不正常，控制芯片就无法正常工作。因此控制芯片一般需要监控电路来实时监测其供电电压，一旦发现电压不正常就会关断或者重启主控制器，以免造成程序跑飞，造成不必要的损坏。因此在控制器的电源系统中，一款适合用于微控制器及数字系统供电电压监测的芯片必不可少。

图1 微控制器监控电路原理图

SGM812是圣邦微推出的微控制器监控芯片，可支持手动复位输入，可在上电、断电及掉电情况下产生复位信号，适合用于微控制器及数字系统供电电压监测。本文将介绍圣邦微公司推出的微控制器监控芯片SGM812，可完美与ON公司的CAT824做替代，而且噪声更低，精度更高，其性能参数对照表如下表所示。

图2 微控制器监控芯片SGM812和CAT824参数对比图

通过微控制器监控芯片SGM812和CAT824的比较可以得出：

1、供电参数上比较：微控制器监控芯片SGM812相比较CAT824来说，两者供电电压范围一致，但SGM812的监控电压范围更广，说明其能够适用于更过的芯片电压场合，可以完全替代CAT824使用，而且供电参数更优。

2、性能参数上比较：微控制器监控芯片SGM812相比较CAT824来说，SGM812的复位时间短，工作电流小，能够消耗更小的功率，发热量减小，能够更好的适应环境温度变化。

3、环境参数上比较：微控制器监控芯片SGM812相比较CAT824具有很大的温度优势，其能够在-40 ~ 125℃的环境温度下工作，适应恶劣环境温度能力强，能够更好的满足客户的要求。

通过供电参数、性能参数、环境参数对比分析可见，SGMICRO公司的微控制器监控芯片SGM812性能更加优越，在芯片电压监控上能够更好的发挥其作用。其次介绍下微控制器监控电路SGM812的引脚和封装尺寸，和CAT824一样，都包含标准封装SOT-23-5，封装尺寸完全兼容。

图3微控制器监控芯片SGM812和CAT824封装尺寸对比图

通过SGMICRO公司的微控制器监控芯片SGM812和CAT824的供电参数、性能参数、环境参数以及引脚封装尺寸对比，可以看出两者尺寸完全兼容可以pin to pin互换，而且微控制器监控电路SGM812在供电参数和性能参数上更具优势。

发送到邮箱 |
+1 赞 0
收藏
评论 0
| 转发至：

本文由叮当喵提供，版权归世强硬创平台所有，非经授权，任何媒体、网站或个人不得转载，授权转载时须注明“来源：世强硬创平台”。

提交评论

全部评论（0）

暂无评论

一文介绍什么是电池管理芯片及其作用

电池管理芯片(Battery Management Chip，简称BMS)是一种集成电路，主要用于监控、控制和保护电池。它在电池组中起着关键的作用，确保电池的安全性和性能稳定。电池管理芯片通常由微控制器、电压监测电路、温度监测电路、电流测量电路和保护电路等组成。既然如此，那什么是电池管理芯片,电池管理芯片的作用是什么，格瑞普电池将详细介绍，包括其工作原理、优缺点、主要参数、选型方法和应用领域。

设计经验发布时间 : 2024-02-19

【经验】如何提高SGMICRO SGM41285在光模块APD中的工作效率？

用户反馈SGMICRO的DCDC升压变换器SGM41285用在光模块APD时的实测效率和规格效率曲线有差异，存在效率偏低情况，经过排查是因为芯片本身损耗是固定的，包括Rds-on、开关损耗、二极管损耗等，这些是不可避免的；效率测试时，输入电流是1mA量级，建议使用6位半万用表或相近精度的电流表，以排除测量因素的影响。

设计经验发布时间 : 2023-06-01

【经验】SGMICRO升压芯片SGM6610的应用设计经验

SGM6610是一款高功率密度的同步升压转换器，内置11mΩ功率开关和13mΩ整流开关。某客户的智能电动窗帘项目，由锂电池供电，升压至10V后驱动电机，控制窗帘的开启和关闭，需要一颗升压芯片，给客户推荐了SGMICRO的升压芯片SGM6610。

设计经验发布时间 : 2022-09-26

描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.

型号- SGM11108M,SGM8306-2,SGM8306-1,SGM61450,SGM3733B,SGM11108E,SGM852,SGM853,SGM851,SGM5347-12,SGM2558A,SGM2558B,SGM8261-5,SGM2564,SGM8261-1,SGM5347-10,SGM8261-2,SGM2549,SGM48017C,SGM72110,SGM8094,SGM836,SGM8091,SGM837,SGM61220,SGM8092,SGM8093,SGM835,SGM72108,SGM2553,SGM72106,SGM2555,SGM809B,SGM4519,SGM4517,SGM4518,SGM48010,SGM11106C,SGM63600,SGM41611,SGM4520,SGM4521,SGM48005,SGM8417-4,SGM8417-2,SGM4051C,SGM48000,SGM48001,SGM48002,SGM3843A,SGM61433,SGM621,SGM84782,74HC574,SGM58031,SGM620,SGM862,SGM41600,SGM2572,SGM41603,SGM860,SGM2571,SGM51622H,SGM4995,SGM4511,SGM2574,SGM4996,SGM4512,SGM4510,SGM2575,SGM51622D,SGM4515,SGM8T245S,SGM4516,SGM8250-1,SGM8250-2,SGM4514,SGM3209,SGM809,SGM8557-3,SGM8557-1,SGM8557-2,SGM803,SGM61012,SGM804,SGM802,SGM61013,SGM810,SGM811,SGM61007,SGM61006,SGM4782,SGM7237B,SGM8902,SGM8903,SGM8904,SGM4542,SGM8905,SGM4548,SGM4549,SGM3699,SGM4546,SGM4547,SGM48013C,SGM62110,SGM61020,SGM62112,AAP6153A,SGM61022,SGM62111,SGM800,SGM2596,SGM3200,SGM3206,SGM8270-2,SGM3207,SGM4535,SGM3204,SGM8270-4,SGM8T245,SGM829,SGM61230,SGM42512,SGM41664,SGM825,SGM61232,SGM823,SGM61234,SGM824,SGM891B,SGM42507,SGM42506,SGM40567,SGM4560,SGM42505,SGM4561,SGM6503,SGM4566,SGM8925,SGM6502,SGM8926,SGM6501,SGM4564,SGM8927,SGM5349-16,SGM4565,SGM6505,SGM4568,SGM6504,SGM8909,SGM818,SGM890B,SGM816,SGM42501,SGM40565,SGM42500,SGM814,SGM815,SGM812,SGM40560,SGM40561,SGM821,SGM822,SGM61235,SGM820,SGM4551,SGM4552,SGM4550,SGM4555,SGM4556,SGM4553,SGM4554,SGM51652S8,SGM8910,SGM5347-8,SGM4558,SGM11124E,SGM37863A,SGM11124F,74LVC2T45,SGM893B,SGM4581,SGM8941,SGM4582,SGM4583,SGM48521Q,SGM8704,SGM4588,SGMNQ59430,SGM8705,SGM4589,SGM8706,SGM8707,SGM8942,SGM8701,SGM8702,SGM8703,SGM12213A,SGM11210A,SGM61060,SGM2050C,SGM12UB1D2,SGM892B,SGM8276-4,SGM6510,SGM4573,SGM3001,SGM4574,SGM42513,SGM6514,SGM3005,SGM6513,SGM4578,SGM8276-2,SGM3002,SGM6512,SGM42622B,SGM8276-1,SGM3003,SGM6511,SGM4576,SGM8931,SGMOP17C,SGM8932,SGM8933,SGM6516,SGM12214A,SGM8934,SGM6515,SGM11210M,SGMNE20220,74AVC8T245,SGM3141B,SGM61030,SGM42403Q,SGM42553,SGM61032,SGM61031,74HC165,SGM62116,SGM8953-1,SGM62118,SGM8953-2,SGM62117,SGM8708,SGM8709,SGM4075-2,SGM3140B,SGM61040,SGM4075-1,SGM42544,SGM7300A,SGM7300B,SGM42541,SGM42540,SGM8951,SGM8952,SGM8710,SGM4590,SGM5200,SGM38045,SGM38042,SGM6533,SGM8711,SGM8712,SGM8955,SGM38046,SGM8956,SGM2053S,SGM8199L2,LM2904,SGM8199L1,SGM41002,SGM8968-4,SGM8968-2,LM2902,SGM8968-1,SGM8740,SGM8741,SGM8742,SGM2077A,SGM8743,SGM2077B,SGM8263-1,SGM8748,SGM8263-2,SGM8417-1,SGM8749,SGM12CB1A5,SGM8744,SGM40666B,SGM8745,SGM11104S,SGM40666A,SGM8746,SGM8747,SGM41513D,SGM41513A,SGM42561,SGM42560,SGM8957-1,SGM8957-2,SGM42562,SGM5208-14,SGM5223,SGM48018C,SGM11102F,SGM11102G,SGM41512A,SGM37603A,SGM8521,SGM8522,SGM11102S,SGM33685A,SGM5018,SGM33685B,SGM33685C,SGM8524,SGM8604-1,SGM11103E,SGM8604-5,SGM8193A3,SGM11103F,SGM8604-2,SGM8193A2,SGM48019C,SGM8604-3,SGM8193A1,SGM8193A0,SGM37604A,SGM8751,SGM11103S,SGM41007,SGM41008,SGM6332,SGM8750,FT2830P,SGM11212M,SGM41280,SGM41281,SGM41283,SGM5353-16,SGM37891A,SGM41285,SGM41286,SGM7SZ244S,SGM8542,SGM51652H8,SGM8543,SGM8301,SGM8544,SGM8302,SGM8545,SGM51652H4,SGM8541,SGM8429C-4,SGM8304,SGM8607-2,SGM37892A,SGM13003A,SGM8531,SGM8773,SGM8532,SGM8534,SGM8770,SGM8771,SGM8772,SGM8535,SGM8536,SGM8537,SGM12024A,SGM8538,SGM65230,SGM37893A,SGM65231,SGM65232,SGM8969-2,SGM8969-1,SGM13002A,SGM2035C,SGM7232,SGM9128YP,SGM41291,SGM2036S,74LVC1G32Q,SGM13001C,SGM13001B,74LVC138,SGM2581E,SGM8958-2,SGM41295,SGM13001A,SGM8958-1,SGM7222,SGM6132,SGM8554,SGM7223,SGM8555,SGM7224,SGM6130,SGM8556,SGM2581C,SGM8551,SGM7220,SGM2581A,SGM8552,SGM7226,SGM7227,SGM7228,SGM7229,SGM44599,SGM8581,SGM8713A-1,SGM8582,SGM6613A,SGM8584,SGM832B,SGM41282C,SGM832A,SGM8714B-1,SGM8924A,SGM811C,SGM5355-16,SGM7SZ19,74LVC1G125,SGM48535B,SGM89000,SGM7SZ14,SGM811B,SGM48535A,SGM48752X,SGM431VB,SGM2560A,SGM37603,SGM2560B,SGM6611C,SGM15CB1A4,SGM810B,SGM41280A,SGM8591,SGM8592,SGM48753X,SGM9203,SGM6612A,SGM8594,SGM8922A,SGM4T245,SGM48753,SGM48754,SGM48755,SGM48756,SGM51242R8,SGM48757,SCM40668,SGM813B,SGM48759,74AVC4T245,SGM8140,SGM8141,SGM48751,SGM449,SGM48752,SGMNQ07430,SGMPM21330,SGM48510,SGM458,SGM3785S,SGM37864,SGM61720,SGM459,SGM37863,SGM457,SGM8142,SGM452,SGM450,SGM451,SGM05UB1B3,SGM37862,SGM37861,SGM05CB1A8,SGM05CB1A7,SGM812B,SGM05CB1A4,74GTL2005,SGM25881,SGM447,SGM448,SGM446,SGM7SZ244,SGM8478-1C,SGM51242R4,SGM8139,SGM51242R2,SGM3705,SGM48536,SGM48537,SGM48538,SGM48539,SGM5351-16,SGM2588G,SGM2588E,SGM2588K,SGM3712,SGM3713,SGM2588C,SGM3710,SGM3711,SGM2588A,SGM48522,SGM48523,SGM48525,SGM48526,SGM48760,SGMNQ07440,SGM48520,SGM48521,SGM8557-5,SGM71XX,SGM706B,SGM460,SGM3701,SGM3700,SGM3727,SGM3741B,SGM3725,SGM3726,SGMOP07,SGM898,SGM899,SGM896,SGM897,SGM895,SGM4823,SGM2566B,SGM3735,SGM3732,SGM4822,SGM2566A,SGM3716,SGM3740B,SGM48544,SGM4806,SGM3717,SGM48545,SGM3714,SGM3715,SGM4809,SGM4807,SGM3718,SGM4808,SGM3719,74LVC157,SGM48780,SGM48540,SGM48541,SGM48542,SGM48543,SGM37898,SGM51652H,SGM51652D,SGM3720,SGM37891,SGM4812,SGM37892,SGM4810,SGM37895,SGM3749,SGM3747,SGM3748,SGM72204A,SGMNQ40430,SGM

选型指南 - SGMICRO - 2024/6/11 PDF 英文下载

SGM811B/SGM812B Microprocessor Supervisory Circuits with Manual Reset Input

型号- SGM811B-TXKA4G/TR,SGM811B-SXKA4G/TR,SGM812B,SGM811B,SGM812B-SXKA4G/TR,SGM811B-RXKA4G/TR,SGM812B-RXKA4G/TR,SGM812B-TXKA4G/TR

数据手册 - SGMICRO - REV. A.4 - DECEMBER 2023 PDF 英文下载查看更多版本

SGM DFAE Training Load Switch-OVP-Supervisor

型号- SGM2594CD,SGM48757,SGM48111,SGM8544,SGM853,SGM452,SGM450,SGM2564,SGM2522A,SGM2594BD,SGM812C,SGM2040-3.3,SGM48220,SGM836,SGM61220,SGM8773,SGM2591B,SGM8252,SGM2591C,SGM8770,SGM2591A,SGM4578,SGM2553,SGM2036,SGM2575A,SGM809B,SGM48017,SGM2592AD,SGM803B,SGM2580F,SGM259X 系列,SGM2580G,SGM2580D,SGM2580E,SGM61430,SGM2580K,SGM2580I,SGM2592C,SGM2580B,SGM2580,SGM2580C,SGM2592A,SGM8713A,SGM2592B,SGM2580A,SGM8713B,SGM3157,SGM2576B,SGM2588,SGM66051,SGM2207,SGM802B,SGM25701,SGM61280,SGM40642,SGM25661,SGM2572,SGM7220,SGM2571,SGM485211,SGM4995,SGM2574,SGM2210,SGM8958,SGM2576,SGM706B,SGM2212,SGM25701B,SGM8558,SGM72204,SGM7227,SGM8955,SGM25701A,SGM7229,SGM8956,SGM809,LM2904,SGM2591AD,SGM803,SGM804,SGM2592CD,SGM61135,SGM801,SGM802,SGM40666S,SGM2594A,SGM810,SGM2594B,SGM811,SGM41518,SGM41512,SGM2594C,SGM6602,SGM4027,SGM2521,SGM259X,SGM7200X,SGM2523,SGM2566B,SGM2522,SGM2566C,SGM3699,SGM2525,SGM2578A,SGM2566A,SGM2528A,SGM41511,SGM61020,SGM2592BD,SGM48541,SGM2590,SGM2592,SGM2591,SGM2594,SGM2593,SGM2596,SGM3206,SGM37892,SGM4535,SGM2567A,SGM811C,SGM2594AD,SGM851A,SGM851B,SGM2539,SGM708,SGM829,SGM41542,SGM41543,SGM42633,SGM827,SGM706,SGM828,SGM851C,SGM825,SGM61232,SGM826,SGM48211,SGM2591CD,SGM823,SGM824,SGM2572A,SGM40666AS,SGM2572B,SGM2584A,SGM2572C,SGM431,SGM460141,SGM2528B,SGM2528C,SGM2028,SGM3756,SGM810B,SGM2527,SGM2526,SGM48524D,SGM818,SGM816,SGM25062,SGM814,SGM2591BD,SGM815,SGM812,SGM8270N,SGM821,SGM8967-1,SGM40666BS,SGM8477,SGM41528,SGM8631,SGM708-S,SGM820,SGM708-T,SGM8197,SGM708-R,SGM8750,SGM4066X,SGM708-M,SGM6610,SGM708-L,SGM2531,SGM2521A,SGM2534,SGM708-J,SGM2533

商品及供应商介绍 - SGMICRO - 2023/3/25 PDF 中文下载

SGMICRO微处理器复位芯片选型表

SGMICRO微处理器复位芯片包含复位芯片、看门狗和计时器和电压检测器；手动复位、看门狗复位、电压排序，推挽/开漏输出，复位时间可调，最大10S复位时，复位电压可调。

产品型号	品类	Package	Reset Active Timeout Period (ms)	SupplyCurrent (μA)	VCC (Max)(V)	VCC (Min)(V)	Manual Reset
SGM708	Reset ICs	SOIC-8	200	20	5.5	1	Manual Reset

选型表 - SGMICRO 立即选型

【应用】国产圣邦微电压监控芯片有助于解决探测设备中主控工作电压不稳定的问题，可在通电、断电或降压断电条件下复位

根据探测设备客户产品的升级需求，向客户推荐了圣邦微的电压监控芯片SGM812B-SXKA4G/TR。这款芯片可在通电、断电或甚至降压断电条件下复位，可很好的解决客户在使用过程中由于电池供电电压不稳引起主控处理数据不稳定的情况。

应用方案发布时间 : 2023-06-30

SGMicro（圣邦微） SGM811/SGM812 数据手册

型号- SGM811-JXKA4/TR,SGM811-LXKA4/TR,SGM812-TXN5/TR,SGM811-MXKA4/TR,SGM812-MXN5/TR,SGM812-M XN5/TR,SGM812-J,SGM811,SGM812-L,SGM811-LXN5/TR,SGM811-TXKA4/TR,SGM811-SXKA4/TR,SGM811-RXKA4/TR,SGM812-JXN5/TR,SGM811-Z,SGM811-ZXKA4/TR,SGM811-XXKA4/TR,SGM811-X,SGM811-S,SGM811-R,SGM811-T,SGM811-ZXN5/TR,SGM811-SXN5/TR,SGM812-XXKA4/TR,SGM812-ZXKA4/TR,SGM812-LXKA4/TR,SGM812-JXKA4/TR,SGM812-RXKA4/TR,SGM812-TXKA4/TR,SGM811-JXN5/TR,SGM811-MXN5/TR,SGM812-RXN5/TR,SGM811-J,SGM811-M,SGM811-L,SGM812-LXN5/TR,SGM811-TXN5/TR,SGM812-Z,SGM812-X,SGM812-R,SGM812-T,SGM812-S,SGM811-RXN5/TR,SGM812-M,SGM812-ZXN5/TR,SGM812,SGM812-MXKA4/TR,SGM812-SXN5/TR,SGM812-SXKA4/TR

数据手册 - SGMICRO - REV. B. 4 - 2016年05月18日 PDF 英文下载

圣邦微电源管理芯片：性能优良、品质卓越、性价比高

圣邦微电源管理芯片性能优良、品质卓越、性价比高，广泛应用于智能手机、数字电视、笔记本电脑、可穿戴式设备、工业控制、医疗设备等领域。圣邦微电源管理芯片包括：圣邦微LDO，圣邦微DC/DC转换芯片，圣邦微负载开关，圣邦微过压保护芯片，圣邦微锂电池充电管理芯片等。世强是圣邦微电子授权代理商，可供应圣邦微电源管理芯片，提供圣邦微电源管理芯片选型、圣邦微电源管理芯片，圣邦微电源管理芯片技术支持等服务。

原厂动态发布时间 : 2018-08-15

SGM811C/SGM812C Microprocessor Supervisory Circuits with Manual Reset Input

型号- SGM811C,SGM811C-SXKA4G/TR,SGM812C-MXKA4G/TR,SGM811C-JXKA4G/TR,SGM812C,SGM811C-RXKA4G/TR,SGM811C-ZXKA4G/TR,SGM811C-MXKA4G/TR,SGM811C-TXKA4G/TR,SGM812C-JXKA4G/TR,SGM812C-RXKA4G/TR,SGM812C-TXKA4G/TR,SGM812C-ZXKA4G/TR,SGM812C-SXKA4G/TR

数据手册 - SGMICRO - REV. A - DECEMBER 2022 PDF 英文下载

【应用】SGM708低功耗微控制器监控芯片在上电复位电路中的应用

SGM708是圣邦微推出的一款低功耗微控制器监控电路，可用于供电电源的监测和微控制器运行监测。相比于其他的分立元件解决方案，SGM708不仅具有更高精度，同时具有更高可靠性。

应用方案发布时间 : 2019-10-09

SGM811/SGM812 Microprocessor Supervisory Circuits with Manual Reset Input

型号- SGM811-JXKA4/TR,SGM812-TXKA4/TR,SGM811-LXKA4/TR,SGM812-TXN5/TR,SGM811-MXKA4/TR,SGM811-JXN5/TR,SGM812-MXN5/TR,SGM811-MXN5/TR,SGM812-RXN5/TR,SGM811,SGM812-LXN5/TR,SGM811-LXN5/TR,SGM811-TXKA4/TR,SGM811-SXKA4/TR,SGM811-RXKA4/TR,SGM812-JXN5/TR,SGM811-TXN5/TR,SGM811-ZXKA4/TR,SGM811-XXKA4/TR,SGM811-ZXN5/TR,SGM811-RXN5/TR,SGM812,SGM812-ZXN5/TR,SGM812-MXKA4/TR,SGM811-SXN5/TR,SGM812-SXN5/TR,SGM812-ZXKA4/TR,SGM812-LXKA4/TR,SGM812-JXKA4/TR,SGM812-SXKA4/TR,SGM812-RXKA4/TR

数据手册 - SGMICRO - REV. B. 4 - JANUARY 2015 PDF 英文下载

SGM811/SGM812 Microprocessor Supervisory Circuits with Manual Reset Input Data Sheet

型号- SGM811-JXKA4/TR,SGM812-TXKA4/TR,SGM811-LXKA4/TR,SGM812-TXN5/TR,SGM811-MXKA4/TR,SGM811-JXN5/TR,SGM812-MXN5/TR,SGM811-MXN5/TR,SGM812-RXN5/TR,SGM812-J,SGM811,SGM811-J,SGM811-M,SGM812-L,SGM812-LXN5/TR,SGM811-L,SGM811-LXN5/TR,SGM811-TXKA4/TR,SGM811-SXKA4/TR,SGM811-RXKA4/TR,SGM812-JXN5/TR,SGM811-TXN5/TR,SGM812-Z,SGM811-Z,SGM811-ZXKA4/TR,SGM811-XXKA4/TR,SGM812-X,SGM811-X,SGM811-S,SGM812-R,SGM811-R,SGM812-T,SGM811-ZXN5/TR,SGM811-T,SGM812-S,SGM811-RXN5/TR,SGM812-M,SGM812,SGM812-ZXN5/TR,SGM812-MXKA4/TR,SGM811-SXN5/TR,SGM812-SXN5/TR,SGM812-ZXKA4/TR,SGM812-LXKA4/TR,SGM812-JXKA4/TR,SGM812-SXKA4/TR,SGM812-RXKA4/TR

数据手册 - SGMICRO - REV.B.4 - JANUARY 2015 PDF 英文下载