Datasheet > HV9903K6-G

HV9903K6-G

更新时间： 2024-01-19 02:09:04

品牌	Logo	应用领域
超科 - SUPERTEX		驱动光电二极管接口集成电路
页数	文件大小	规格书
11页	1385K
描述
LED Driver, 1-Segment, PDSO6, 3 X 3 MM, 1 MM HEIGHT, 0.95 MM PITCH, GREEN, SOT-23, DFN-6

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HV9903K6-G 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SOT-23	包装说明：	VSON,
针数：	6	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.84	接口集成电路类型：	LED DISPLAY DRIVER
JESD-30 代码：	S-PDSO-N6	JESD-609代码：	e3
长度：	3 mm	复用显示功能：	NO
功能数量：	1	区段数：	1
端子数量：	6	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	VSON	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, VERY THIN PROFILE	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	座面最大高度：	1 mm
最大供电电压：	4.6 V	最小供电电压：	2.6 V
标称供电电压：	2.7 V	表面贴装：	YES
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	NO LEAD	端子节距：	0.95 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3 mm	最小 fmax：	1 MHz
Base Number Matches：	1

HV9903K6-G 数据手册

Supertex inc.

HV9903

White LED Driver IC

Features

General Description

► Power efﬁciency of up to 85%

The Supertex HV9903 is a ﬁxed frequency DC-DC boost

converter designed for driving Light Emitting Diodes (LEDs)

with constant current where the light intensity is proportional

to the current through them. The input supply voltage range

into the device (V_DD) is 2.6 - 4.6V. Operation of the driver at

lower voltages is possible as long as a 2.6 - 4.6V low-current

supply is available for the HV9903. The device uses a single

inductor and a minimum number of passive components. The

device can be enabled/disabled via the SHDN pin.

► Drives up to six white LEDs

► 2.6 - 4.6V supply power stage can operate at 1.8V

(see page 7)

► Built-in soft start

► DC and PWM dimming control

► Built-in open LED protection

► Open LED indicator (via R_SET

)

► 1.2MHz ﬁxed switching frequency

► 500nA max leakage current when disabled

The HV9903 has an internal oscillator. The oscillator is at

ﬁxed frequency of 1.2MHz that allows use of small value

inductors. The LED current can be adjusted from 5.0 - 40mA

by an external resistor connected between the RSET and the

GND pins. The amount of current through the LED can also

be adjusted via DC voltage or a pulse width modulated (PWM)

signal to the RSET pin.

► No leakage current path through LEDs when

disabled

► Resistor-programmable LED current

► Small 6-Lead DFN (3.00mm x 3.00mm) package

Applications

► Color LCD backlighting

► Cell phones, smart phones

► PDAs, pocket PCs

► Organizers

Soft-start is implemented on-chip, minimizing inrush current

to only 30% over steady state current.

An open LED circuit detects an open LED condition, disables

the driver, and sets the RSET pin high. The driver is re-enabled

by asserting SHDN low, then high. If the open LED condition

persists, the driver will again latch off.

► Digital cameras

► MP3 players

Typical Application Circuit

V_IN=

1.8 - 12.5V

2.6 - 4^D.6^DV

VDD

●

SHDN

RSET

GND

Shutdown

LED

HV9903

R_SET

Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com

12 3 4 5 6 7...11

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