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MIC3203YM 其他数据使用手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
LED驱动器
封装:
SOIC-8
描述:
MICROCHIP MIC3203YM 芯片, 发光二极管驱动器,控制器, HB, 8SOIC
Pictures:
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引脚图在P12Hot
典型应用电路图在P2
原理图在P2P14
封装尺寸在P21
标记信息在P20
封装信息在P20P21P25
功能描述在P1P13
技术参数、封装参数在P5
应用领域在P1
电气规格在P4P14
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MIC3203YM数据手册
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若手册格式错乱，请下载阅览PDF原文件
2019 Microchip Technology Inc. DS20006250A-page 1
MIC3203/MIC3203-1
Features
• 4.5V to 42V Input Voltage Range
• High Efficiency (>90%)
• ±5% LED Current Accuracy
• MIC3203: Dither Enabled for Low EMI
• MIC3203-1: Dither Disabled
• High-Side Current Sense
• Dedicated Dimming Control Input
• Hysteretic Control (No Compensation)
• Up to 1.5 MHz Switching Frequency
• Adjustable Constant LED Current
• Overtemperature Protection
• –40°C to +125°C Junction Temperature Range
Applications
• Architectural, Industrial, and Ambient Lighting
• LED Bulbs
• Indicators and Emergency Lighting
• Street Lighting
• Channel Letters
• 12V Lighting Systems (MR-16 Bulbs,
Under-Cabinet Lighting, Garden/Pathway
Lighting)
General Description
The MIC3203 is a hysteretic, step-down,
constant-current, high-brightness LED (HB LED)
driver. It provides an ideal solution for interior/exterior
lighting, architectural and ambient lighting, LED bulbs,
and other general illumination applications.
The MIC3203 is well suited for lighting applications that
require a wide input voltage range.
The hysteretic
control gives good supply rejection and fast response
during load transients and PWM dimming. The
high-side current sensing and on-chip current-sense
comparator delivers LED current with ±5% accuracy.
An external high-side current-sense resistor is used to
set the output current.
The MIC3203 offers a dedicated PWM input (DIM) that
enables a wide range of pulsed dimming.
A
high-frequency switching operation up to 1.5 MHz
allows the use of smaller external components
minimizing space and cost.
The MIC3203 offers
frequency dither feature for EMI control.
The MIC3203 operates over a junction temperature
from –40°C to +125°C and is available in an 8-pin SOIC
package.
A dither disabled version MIC3203-1 is also available in
the same package as the MIC3203.
Package Type
MIC3203
8-Lead SOIC (M)
(Top View)
1VCC
CS
VIN
AGND
8DRV
PGND
DIM
EN
7
6
5
2
3
4
High-Brightness LED Driver Controller with High-Side Current Sense
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