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MAX5986AMAX5986C/MAX5987A
IEEE 802.3af-Compliant, High-Efficiency, Class 1/
Class 2, PDs with Integrated DC-DC Converter
  11
Maxim Integrated
Pin Description
Pin Configurations
PIN
NAME
FUNCTION
MAX5986A
MAX5986B/
MAX5986C
MAX5987A
1
1
1
AUX
Auxiliary Voltage Input. Auxiliary input to the internal regulator (VDRV).
Connect AUX to the output of the buck converter if the output voltage is
greater than 4.75V to back bias the internal circuitry and increase efficiency.
Connect to a clean ground when not used.
2
2
2
LX
Inductor Connection. Inductor connection for the internal DC-DC converter.
3
3

LED
LED Driver Output. In sleep mode, LED sources a periodic current (I
LED
) at
250Hz with 25% duty cycle.


3
LDO_IN
LDO Input Voltage. Connect LDO_IN to output when used, otherwise connect to
GND. Connect a minimum 1FF bypass capacitor between LDO_IN and GND.
4
4

WK
Wake Mode Enable Input. WK has an internal 50kI pullup resistor to the
internal 5V bias rail. A falling edge on WK brings the device out of sleep mode
and into the normal operating mode (wake mode).


4
LDO_OUT
LDO Output Voltage. Connect a minimum 1FF output capacitor between
LDO_OUT and GND.
5
5
5
FB
Feedback. Feedback input for the DC-DC buck converter. Connect FB to a
resistive divider from the output to GND to adjust the output voltage.
15
16
14
13
6
5
7
8
1
2
V
CC
4
12
11
9
PGND
RREF
*EP
*EP
*EXPOSED PAD, CONNECT TO GND
( ) Applies to MAX5986B/MAX5986C
*EXPOSED PAD, CONNECT TO GND
SL
VDRV
GND
FB
+
3
10
V
DD
TQFN
MAX5986A
MAX5986B
MAX5986C
TOP VIEW
15
16
14
13
6
5
7
8
1
2
V
CC
4
12
11
9
PGND
RREF
LDO_FB
VDRV
GND
FB
+
3
10
V
DD
TQFN
MAX5987A
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相关代理商/技术参数
MAX5986AETE+T 功能描述:直流/直流开关转换器 IEEE802.3 af PD w/ DC/DC Conv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX5986BETE+ 功能描述:以太网 IC IEEE802.3 AF HI EFFICIENCY PD RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
MAX5986BETE+T 功能描述:PMIC 解决方案 IEEE802.3 AF HI EFFICIENCY PD RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel
MAX5986EVKIT# 功能描述:电源管理IC开发工具 MAX5986 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
MAX5987AETE+ 制造商:Maxim Integrated Products 功能描述:IEEE802.3 AF HIGH EFFICIENCY POWERED DEVICE WITH DC/DC CONVE - Rail/Tube
MAX5987AETE+T 制造商:Maxim Integrated Products 功能描述:IEEE802.3 AF HIGH EFFICIENCY POWERED DEVICE WITH DC/DC CONVE - Tape and Reel
MAX5987AEVKIT# 制造商:Maxim Integrated Products 功能描述:MAX5987A EVAL KIT
MAX5988AETP+ 功能描述:直流/直流开关转换器 POWERED DEVICE (PD) w/ ING REGULATOR RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT