参数资料
型号: MAX16840ATB+T
厂商: Maxim Integrated
文件页数: 5/12页
文件大小: 0K
描述: IC LED DRVR MR16 12/24VAC 10TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
拓扑: SEPIC,降压(降压),升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 通用
频率: 300kHz
电源电压: 6.5 V ~ 40 V
输出电压: 48V
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
供应商设备封装: 10-TDFN-EP(3x3)
包装: 标准包装
工作温度: -40°C ~ 125°C
其它名称: MAX16840ATB+TDKR
MAX16840
LED Driver with Integrated MOSFET
for MR16 and Other 12V AC Input Lamps
Pin Configuration
TOP VIEW
DRAIN
DRAIN
IN
EXT
COMP
1
2
3
4
5
+
MAX16840
EP
10
9
8
7
6
SOURCE
SOURCE
FB
GND
REFI
TDFN
Pin Description
PIN
1, 2
3
4
5
6
7
8
9, 10
Maxim Integrated
NAME
DRAIN
IN
EXT
COMP
REFI
GND
FB
SOURCE
EP
FUNCTION
Drain of the Internal Switching MOSFET
Input. Connect to LED string anode in boost and buck-boost configuration to get OVP protection
during open LED. Bypass it with a sufficient capacitor not to allow IN to go below 6.5V in buck
applications.
Base Drive for External Bipolar Until Internal Driver Starts Switching for the First Time After Power-Up
Compensation Component Connection for the Switching Stage. Connect a suitable RC network to
ground. This is the output of the g m amplifier
Analog Dimming and Thermal Foldback. The IC sources 50μA current out of this pin. Whenever this
pin voltage is > 1.2V, the FB voltage is regulated to internal 200mV reference. Whenever this pin
voltage < 1.2V, the FB voltage is regulated to V REFI /6. Leave this pin unconnected to disable this
foldback feature.
Ground
Current-Sense. This pin includes a 5k I /4pF RC filter at its input to average the current information
over the switching cycle. Connect this pin directly to SOURCE.
Source of the Internal Switching MOSFET
Exposed Pad. Connect EP to the ground plane for heatsinking. Do not use the EP as the only
electrical connection to ground.
5
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