- 您现在的位置：买卖IC网 > PDF目录13384 > MAX6879ETE+T (Maxim Integrated Products)IC SEQUENCE/SUPERVISOR 16TQFN PDF资料下载
参数资料
| 型号： | MAX6879ETE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCE/SUPERVISOR 16TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 序列发生器 |
| 监视电压数目： | 2 |
| 复位超时： | 可调节/可选择 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
19-3771; Rev 1; 10/05
ATION
EVALU
AVAILA
KIT
B LE
Dual-/Triple-Voltage, Power-Supply
Trackers/Sequencers/Supervisors
General Description
The MAX6877/MAX6878/MAX6879 multivoltage power
trackers/sequencers/supervisors monitor up to three
system voltages and provide proper power-up and
power-down control for systems requiring voltage track-
ing or sequencing. These devices ensure controlled
voltage tracking within a specified range or sequencing
in the proper order as system power supplies are
enabled. The MAX6877/MAX6878/MAX6879 generate
all required voltages and timing to control up to three
external n-channel pass FETs for the OUT1/OUT2/
OUT3 supply voltages (see the Selector Guide for dif-
ferent features of each device).
The MAX6877/MAX6878/MAX6879 feature adjustable
undervoltage thresholds for each input supply. When all
the voltages are above these adjustable thresholds, the
devices turn on the external n-channel MOSFETs to
either sequence or track the voltages to the system.
During voltage-tracking mode, the voltage at the GATE
of each MOSFET is increased to slowly bring up all
supplies at a controlled slew rate. The MAX6877/
MAX6878/MAX6879 feature an autoretry or latch-off
mode with capacitor-adjusted timing.
Features
? Pin-Selectable Tracking or Sequencing Control
for Up to Three Supply Voltages
? Capacitor-Adjustable Power-Up/Down Tracking
Slew Rate
? Capacitor-Adjustable Power-Up Sequencing Delay
? Internal Charge Pumps to Enhance External
n-Channel FETs
? Capacitor-Adjustable Timeout Period Power-Good
Output (MAX6877/MAX6878)
? Adjustable Undervoltage Lockout or
Logic-Enable Input
? Internal 100 ? Pulldown for Each Output to
Discharge Capacitive Load Quickly
? 0.5V to 5.5V Nominal IN_/OUT_ Range
? 2.7V to 5.5V Operating Voltage Range
? Immune to Short Voltage Transients
? Small 4mm x 4mm 24-Pin or 16-Pin Thin QFN
Packages
Ordering Information
These devices also provide a controlled power-down
(tracking mode) when the system shuts off in an orderly
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
manner. When an unexpected fault occurs, the outputs
are all pulled down simultaneously with an internal
100 ? pulldown to help discharge capactive loads at
the MOSFET ’s source. The MAX6877/MAX6878/
MAX6879 feature independent internal charge pumps
to fully enhance the external FETs for low-voltage drop
at highpass current. The MAX6877 and MAX6878 also
feature a power-good output with a selectable timeout
period that can be used for system reset.
The MAX6877/MAX6878/MAX6879 are available in
MAX6877 ETG+ -40°C to +85°C 24 Thin QFN T2444-4
Ordering Information continued at end of data sheet.
+ Denotes lead-free package.
Pin Configurations
TOP VIEW
small 4mm x 4mm 24-pin and 16-pin thin QFN pack-
18
17
16
15
14
13
ages and are fully specified over the -40°C to +85°C
extended operating temperature range.
Applications
GATE2 19
OUT1 20
GATE1 21
12
11
10
TRK/SEQ
LTCH/RTR
TIMEOUT
Multivoltage Systems
IN3 22
MAX6877
9
SLEW
Networking Systems
Telecom
IN2 23
IN1 24
+
EP*
8
7
DELAY
GND
Storage Equipment
1
2
3
4
5
6
Servers/Workstations
4mm x 4mm THIN QFN
*EXPOSED PADDLE CONNECTED TO GND.
Selector Guide appears at end of data sheet.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
相关PDF资料 |
PDF描述 |
|---|---|
| ECM43DTBI-S189 | CONN EDGECARD 86POS R/A .156 SLD |
| EMC22DRAS-S734 | CONN EDGECARD 44POS .100 R/A PCB |
| ECM43DTMI-S189 | CONN EDGECARD 86POS R/A .156 SLD |
| EBM36DRMT-S664 | CONN EDGECARD 72POS .156 WW |
| SC53FU-390 | INDUCTOR SMD 39UH 0.72A 100KHZ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX687CPA | 功能描述:低压差稳压器 - LDO High-Accuracy LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX687CSA | 功能描述:低压差稳压器 - LDO High-Accuracy LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX687CSA+ | 功能描述:低压差稳压器 - LDO High-Accuracy LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX687CSA+T | 功能描述:低压差稳压器 - LDO High-Accuracy LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX687CSA-T | 功能描述:低压差稳压器 - LDO High-Accuracy LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
发布紧急采购，3分钟左右您将得到回复。