Datasheet > IS32BL3556-ZLA3-TR

IS32BL3556-ZLA3-TR

更新时间： 2024-11-11 21:04:11

品牌	Logo	应用领域
美国芯成 - ISSI		驱动光电二极管接口集成电路
页数	文件大小	规格书
27页	982K
描述
LED Driver, PDSO20,

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IS32BL3556-ZLA3-TR 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	HTSSOP, TSSOP20,.25	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
Factory Lead Time：	6 weeks	风险等级：	5.7
接口集成电路类型：	LED DISPLAY DRIVER	JESD-30 代码：	R-PDSO-G20
长度：	6.5 mm	功能数量：	1
区段数：	4	端子数量：	20
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	HTSSOP
封装等效代码：	TSSOP20,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	NOT SPECIFIED
电源：	12 V	认证状态：	Not Qualified
筛选级别：	AEC-Q100	座面最大高度：	1.2 mm
子类别：	Display Drivers	最大供电电压：	40 V
最小供电电压：	4.75 V	标称供电电压：	12 V
表面贴装：	YES	温度等级：	AUTOMOTIVE
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	4.4 mm	最小 fmax：	2.3 MHz
Base Number Matches：	1

IS32BL3556-ZLA3-TR 数据手册

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IS32BL3556

4 CHANNELS, 120MA BOOST LED BACKLIGHT DRIVER

FOR AUTOMOTIVE LCD PANELS

Preliminary Information

December 2016

GENERAL DESCRIPTION

FEATURES

The IS32BL3556 is a step-up controller with an

integrated switching FET for driving white LED arrays

in LCD panel backlight applications. The boost

controller is a current mode, fixed frequency

architecture with the switching frequency set by an

external resistor. The integrated boost controller

generates the minimum output voltage to keep all

LEDs illuminated at the set current. The current in

each of the 4 channels is programmed to a specific

value with an external current set resistor and

matched to within 1%.



is 4.75V to 40V for start/stop,

cold crank and load dump requirements

Excellent input voltage transient response

Input voltage range



Sync function to synchronize boost converter

switching frequency up to 2.3MHz, allowing

operation above the AM band

Single resistor primary OVP minimizes VOUT

leakage

Fully integrated LED current sinks and boost

converter up to 55V

LED current of 120mA per channel

1% LED to LED matching accuracy

Internal secondary OVP for redundant protection

Drives up to 12 series LEDs in 4 parallel strings

10000:1 PWM dimming at 100Hz

PWM and analog dimming inputs

Provides driver for external PMOS input

disconnect switch



LED dimming is achieved using an external digital

PWM signal to either adjust the internal ISET current

or pulse-width-modulate the LED intensity. The LED

sinks have a fast response to a PWM input making it

possible to achieve a high contrast ratio of 10,000:1.

A synchronization pin can be used to synchronize

multiple IS32BL3556 devices or to synchronize with

the external PWM source in the range of 580 kHz to

2.3MHz. The high switching frequency allows the

IS32BL3556 to operate above the AM radio band.

Built-in protection features

- Shorted boost switch



- Shorted FSET or ISET resistor

- Shorted output

- Open or shorted LED

- Open boost Schottky

- Overtemperature (OTP)

AEC-Q100 qualified (pending)

The IS32BL3556 integrates a control block to drive an

external P-Channel FET to disconnect the input

supply from the system whenever a fault is detected.

It has safety protection features to prevent damage

during fault conditions. Protection features include

output short and overvoltage, open or shorted diode,

open or shorted LED pin, shorted boost switch,

shorted FSET or ISET resistor, and IC over



APPLICATIONS

temperature. A dual level cycle-by-cycle current limit

function provides soft start and protects the internal

current switch against high current overloads.



LCD Monitor

LCD Display Module

LCD TV

Car infotainment

Cluster

The IS32BL3556 is available in a thermally enhanced

eTSSOP-20 package.

Integrated Silicon Solution, Inc. – www.issi.com

Rev. 0C, 12/19/2016

12 3 4 5 6 7...27

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