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MAX4990ETD+

更新时间： 2024-10-03 04:41:55

品牌	Logo	应用领域
美信 - MAXIM		显示驱动器驱动程序和接口接口集成电路
页数	文件大小	规格书
15页	221K
描述
High-Voltage, 【15kV ESD-Protected Electroluminescent Lamp Driver

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MAX4990ETD+ 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Not Recommended	零件包装代码：	DFN
包装说明：	HVQCCN,	针数：	14
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	5.71	Is Samacsys：	N
接口集成电路类型：	EL DISPLAY DRIVER	JESD-30 代码：	S-XQCC-N14
JESD-609代码：	e3	长度：	3 mm
湿度敏感等级：	1	功能数量：	1
区段数：	1	端子数量：	14
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	HVQCCN
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	0.8 mm	最大供电电压：	5.5 V
最小供电电压：	2.4 V	标称供电电压：	3 V
表面贴装：	YES	技术：	BCDMOS
温度等级：	INDUSTRIAL	端子面层：	MATTE TIN
端子形式：	NO LEAD	端子节距：	0.4 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3 mm	Base Number Matches：	1

MAX4990ETD+ 数据手册

19-0886; Rev 0; 8/07

High-Voltage, ±±15V EꢀD-ꢁrotected

Electroluminescent Lamp Driver

MAX490E

General Description

Features

♦ ESD-Protected EL Lamp Outputs

The MAX4990E high-voltage DC-AC converter is ideal

for driving electroluminescent (EL) lamps. The

MAX4990E features a wide +2.4V to +5.5V input range

that allows the device to accept a wide variety of

voltage sources such as single-cell lithium-ion (Li+)

batteries and higher voltage battery chargers. The lamp

outputs of the device generate up to 250V peak-to-

peak output voltage for maximum lamp brightness.

15kV Human Body Model

4kV IEC 61000-4-2 Contact Discharge

15kV IEC 61000-4-2 Air-Gap Discharge

♦ 250V

(MAX) Output for Highest Brightness

P-P

♦ Wide +2.4V to +5.5V Input Voltage Range

♦ Resistor-Adjustable Slew-Rate Control for

Audible Noise Reduction

The MAX4990E utilizes an inductor-based boost con-

verter to generate the high voltage necessary to drive

an EL lamp. The boost-converter switching frequency is

set with the combination of an external capacitor con-

nected from SW to GND and an external resistor con-

nected from SLEW to GND.

♦ Externally Driven Lamp and Switching Converter

Frequencies

♦ Capacitor-Adjustable Lamp and Switching

Converter Frequencies

♦ Low 100nA Shutdown Current

♦ DIM Input for Controlling Output Voltage Through

The MAX4990E uses a high-voltage full-bridge output

stage to convert the high voltage generated by the

boost converter to an AC waveform suitable for driving

the EL panel. The EL output switching frequency is set

with the combination of an external capacitor connect-

ed from EL to GND and an external resistor connected

from SLEW to GND.

DC Analog Voltage, PWM, or Resistor to GND

♦ Capacitor Adjustable for Slow Turn-On/-Off

♦ Space-Saving Packages

14-Pin, 3mm x 3mm TDFN

Applications

Keypad Backlighting

MP3 Players

PDAs/Smartphones

The MAX4990E uses a proprietary acoustic noise-

reduction circuit that controls the slew rate of the AC

voltage, reducing audible noise from the EL panel. The

slew rate is set with an external resistor connected from

SLEW to GND.

Automotive Instrument

Clusters

LCD Backlighting

ꢁin Configuration

The MAX4990E features an EL lamp dimming control

(DIM) that allows the user to set the EL output voltage

with a PWM signal, a DC analog voltage, or a resistor

connected from the DIM input to GND. A capacitor

placed in parallel to the resistor on DIM allows the user

to program a slow turn-on/-off time that generates a soft

fade-on/fade-off effect of the EL lamp.

TOP VIEW

14 13 12 11 10

MAX4990E

The MAX4990E enters a low-power shutdown mode

(100nA max) when the EN and DIM inputs are connect-

ed to GND. The MAX4990E also enters thermal shut-

down if the die temperature rises above +158°C.

*EP

The MAX4990E is available in a space-saving, 14-pin,

3mm x 3mm TDFN package and is specified over the

extended -40°C to +85°C operating temperature range.

TDFN-EP

*EP = EXPOSED PAD. CONNECT EP TO GND OR LEAVE UNCONNECTED.

Typical Application Circuits appear at end of data sheet.

Ordering Information

TOP

MARK

PKG

CODE

1ꢀ5k

PROTECTION

SLEW-RATE

CONTROL

PART

PIN-PACKAGE

DIM CONTROL

MAX4990ETD+

14 TDFN-EP (3mm x 3mm)

ADL

T1433-2

Yes

Note: The device operates over the -40°C to +85°C operating

temperature range.

+Denotes a lead-free package.

EP = Exposed paddle.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...15

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