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參數(shù)資料
| 型號： | DS1672S-2 |
| 英文描述： | Low Voltage Serial Timekeeping Chip |
| 中文描述： | 低電壓串行時鐘芯片 |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 104K |
| 代理商： | DS1672S-2 |
DS1672
4 of 13
Diode and resistor selection is determined by the user according to the maximum current desired for
battery or super cap charging. The maximum charging current can be calculated as illustrated in the
following example. Assume that a system power supply of 3 volt is applied to V
CC
and a super cap is
connected to V
BACKUP
. Also assume that the trickle charger has been enabled with a diode and resistor R2
between V
CC
and V
BACKUP
. The
maximum current I
max
would therefore be calculated as follows:
I
max
= (3.0V – diode drop) / R2
~ (3.0V – 0.7V) / 2 k
~ 1.2 mA
Obviously, as the super cap changes, the voltage drop between V
CC
and V
BACKUP
will decrease and
therefore the charge current will decrease.
DS1672 PROGRAMMABLE TRICKLE CHARGER
Figure 3
1 OF 16 SELECT
NOTE: ONLY 1010 ENABLES
1 OF 2
SELECT
1 OF 3
SELECT
TCS
BIT 7
TCS
BIT 6
TCS
BIT 5
TCS
BIT 4
DS
DS
RS
RS
BIT 3
BIT 2
BIT 1
BIT 0
100
R3
R1
R2
TRICKLE CHARGE REGISTER
TCS = TRICKLE CHARGER SELECT
DS = DIODE SELECT
RS = RESISTOR SELECT
V
CC
V
BACKUP
2k
4k
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1672S-3 | Low Voltage Serial Timekeeping Chip |
| DS1672S-33 | Low Voltage Serial Timekeeping Chip |
| DS1682 | Total Elapsed Time Recorder with Alarm |
| DS1682S | Total Elapsed Time Recorder with Alarm |
| DS1682X | Total Elapsed Time Recorder with Alarm |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1672S-2+ | 功能描述:實(shí)時時鐘 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1672S-3 | 功能描述:實(shí)時時鐘 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1672S-3/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TIMEKEEPER 3V 32-BIT 8-SOIC |
| DS1672S-3/T&R | 功能描述:IC TIMEKEEPER 3V 32-BIT 8-SOIC RoHS:否 類別:集成電路 (IC) >> 時鐘/計(jì)時 - 實(shí)時時鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:時鐘/日歷 特點(diǎn):警報(bào)器，閏年，SRAM 存儲容量:- 時間格式:HH:MM:SS（12/24 小時） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件 |
| DS1672S-3/TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C 32-Bit Binary Counter RTC |
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