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参数资料
| 型号： | MAX8688ALETG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 19/38页 |
| 文件大小： | 0K |
| 描述： | IC PWR SUPPLY CTRLR/MONTR 24TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 电源控制器/监控器 |
| 电源电压： | 3 V ~ 3.6 V |
| 电流 - 电源： | 6.7mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
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Digital Power-Supply Controller/Monitor
with PMBus Interface
Table 3. MAX8688 A3:A1 Address
RESET
SET SLAVE ADDRESS
ACCORDING TO
A3:A1
Assignment
A3/ONOFF A2/SDAE A1/SCLE ADDRESS
L L L 00h*
L L Z
01h**
L Z L
02h
L Z Z
03h
VALID EEPROM?
Y
RESTORE SLAVE
ADDRESS FROM
EEPROM
Z L L
Z L Z
04h
05h
Z Z L
06h
N
Z Z Z
07h
L L H 09h
L Z H
0Bh
MFR_SET_ADDR?
Y
SLAVE ADDRESS
UNCHANGED.
STORE NEW ADDRESS
Z L H 0Dh
Z Z H 0Fh
L H L 12h
N
TEMPORARILY.
L H Z
Z H L
Z H Z
13h
16h
17h
L H H 1Bh
Z H H
1Fh
SAVE TO
EEPROM?
N
Y
SAVE NEW ADDRESS
TO EEPROM
H L L 24h
H L Z 25h
H Z L
26h
H Z Z
27h
H L H 2Dh
H Z H
2Fh
H H L 36h
Figure 10. MAX8688 Address Assignment
H H Z
37h
H H H 3Fh
The MAX8688 reads A3:A2:A1 address pins upon device
reset and determines its address according to Table 3.
For example, to configure the MAX8688 to have a slave
address of 010 0101 (25h), set A3:A2:A1 = H:L:Z. The
MAX8688 also responds to the broadcast address
(00h). While it is possible to configure the address pins
such that the resulting address is 00h, the MAX8688
with such address is then only responsive to the broad-
cast address. This may cause undesired results if other
PMBus devices are also present on the same bus.
Therefore, the hardwire address pins option give 3 3 - 1
= 26 address options.
If an EEPROM with valid SIGNATURE bytes is attached
to the MAX8688, the MAX8688 also tries to restore its
slave address from the EEPROM. This overrides the
address set by the address pins. This gives a total of
127 useful slave addresses (address 00h is normally
for broadcast address). If the address bit 7 from the
EEPROM is set to 1, this is an invalid address and the
*The address 00h is reserved for broadcast.
**The shaded addresses are not available if an external EEPROM
is attached.
MAX8688 continues using the address set by the
address pins. When an EEPROM is attached to
A2/SDAE and A1/SCLE, these pins assume either a
logic-high or logic-low level, therefore, the resulting
number of possible addresses set by the A3:A2:A1
pins in this scenario is 2 3 - 1 = 7.
In addition, for the MAX8688 with an EEPROM
attached, the system controller can change the
MAX8688 slave address by sending the new address
with the MFR_SET_ADDRESS command. However, the
new address is not immediately effective. The new
address must be stored to the EEPROM first. Then, a
device reset has to be applied to the MAX8688 which
undergoes the address assignment procedure and
recalls the new address from the EEPROM.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8688BHETG+ | 功能描述:电流和电力监控器、调节器 Digital Power-Supply Controller/Monitor RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX8688BHETG+T | 功能描述:电流和电力监控器、调节器 Digital Power-Supply Controller/Monitor RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX8688BLETG+ | 功能描述:电流和电力监控器、调节器 Digital Power-Supply Controller/Monitor RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX8688BLETG+T | 功能描述:电流和电力监控器、调节器 Digital Power-Supply Controller/Monitor RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX8688EVKIT+ | 功能描述:电流和电力监控器、调节器 DIGITAL POWER SUPPLY RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
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