- 您现在的位置：买卖IC网 > PDF目录16706 > MAX8688AHETG+T (Maxim Integrated Products)IC PWR SUPPLY CTRLR/MONTR 24TQFN PDF资料下载
参数资料
| 型号： | MAX8688AHETG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/38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) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页
Digital Power-Supply Controller/Monitor
with PMBus Interface
SYSTEM
CONTROLLER
SCL
SDA
IRQ
RST
SCL
SDA
FLT
RST
MAX8688
RS+
RS-
ISN+
ISN-
DACOUT
ENOUT
VO+
VO-
IO+
IO-
FB
EN
POL 1
A3/ONOFF A2/SDAE A1/SCLE
SCL
SDA
FLT
RST
MAX8688
RS+
RS-
ISN+
ISN-
DACOUT
ENOUT
VO+
VO-
IO+
IO-
FB
EN
POL 2
A3/ONOFF A2/SDAE A1/SCLE
SCL
SDA
FLT
RST
MAX8688
RS+
RS-
ISN+
ISN-
DACOUT
ENOUT
VO+
VO-
IO+
IO-
FB
EN
POL 3
A3/ONOFF A2/SDAE A1/SCLE
SCL
SDA
FLT
RST
MAX8688
RS+
RS-
ISN+
ISN-
DACOUT
ENOUT
VO+
VO-
IO+
IO-
FB
EN
POL N
A3/ONOFF A2/SDAE A1/SCLE
Figure 2. System Application Showing Multiple MAX8688s Controlling POL Power Supplies
MAX8688 Operating Modes
Reference Input (REFIN) Mode
Figure 3 shows the typical manner in which the
MAX8688 is used in an application where the POL has a
reference input, REFIN, to which it regulates its output
voltage between the VO+ and VO- terminals. In the
REFIN application, the DACOUT of the MAX8688 is con-
nected to the REFIN input of the POL. The output voltage
of the POL is sensed using RS+ and RS-. The sensed
voltage is suitably filtered by an internal 200 ? resistor
and external capacitor connected to RS_C and is multi-
plexed to a 12-bit ADC that uses an accurate internal ref-
erence voltage. On receipt of either an OPERATION ON
command or a turn-on signal from A3/ONOFF, the
MAX8688 commences the startup operation that has
been programmed for the POL being controlled.
After the programmed t ON_DELAY time, the MAX8688
open-drain ENOUT output goes active and the POL out-
put voltage is ramped up to its target VOUT_COMMAND
value precisely in the programmed t ON_RISE time. This
facilitates easy implementation of tracking of multiple out-
put rails. On reaching the target output voltage, the
MAX8688 continuously monitors the POL output voltage
obtained at the RS+ and RS- inputs, and regulates it to
within ±0.2% for line, load, and temperature variations by
incrementing or decrementing the DACOUT output 1 LSB
(0.5mV) at a time. The MAX8688 output-voltage correc-
tion rate is programmable up to 10kHz by the
MFR_VOUT_CORRECTION_RATE parameter. Once the
requested target POL voltage is reached, it is possible to
easily margin up or down the POL voltage at a prepro-
grammed slew rate set by the parameter VOUT_TRANSI-
TION_RATE. To achieve this, the MAX8688 increments or
decrements the DACOUT output in a suitable number of
steps that depend on the programmed transition rate. In
addition, the user needs to program the
VOUT_SCALE_LOOP parameter equal to any voltage-
divider ratio implemented on the POL from its output volt-
age node to the inverting input of its error amplifier. This
allows the MAX8688 to correctly calculate the number of
DACOUT steps and voltage increments/decrements per
step and thus achieves the programmed rise time and
transition time.
10
______________________________________________________________________________________
相关PDF资料 |
PDF描述 |
|---|---|
| EEC49DRXN | CONN EDGECARD 98POS DIP .100 SLD |
| H3BKH-1006G | IDC CABLE - HSR10H/AE10G/HPK10H |
| ZR431LC01STOB | IC VREF SHUNT PREC ADJ TO-92-3 |
| RCM22DCWH | CONN EDGECARD 44POS DIP .156 SLD |
| GCC17DRTF-S13 | CONN EDGECARD 34POS .100 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8688ALETG/GH9 | 功能描述:电流和电力监控器、调节器 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 |
| MAX8688ALETG/GH9-T | 功能描述:电流和电力监控器、调节器 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 |
| MAX8688ALETG+ | 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 |
| MAX8688ALETG+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 |
| 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 |
发布紧急采购，3分钟左右您将得到回复。