Datasheet > BD8118FM

BD8118FM

更新时间： 2022-12-17 02:42:10

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
5页	168K
描述
Silicon Monolithic Integrated Circuit

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BD8118FM 数据手册

1/4

STRUCTURE

PRODUCT NAME

TYPE

Silicon Monolithic Integrated Circuit

White LED driver for car navigation back light

BD８１1８FM

FEATURES

・Step-up DC/DC converter

Built in OSC

・Built in UVLO

・Built in OVP

・4 parallel current output （output current is set with external resister）

・LED open detection circuit

・PWM adjustment

・Built in TSD

・Built in OCP

・FAIL output (self diagnosis)

●ABSOLUTE MAXIMUM RATINGS (Ta=25℃)

PARAMETER

SYMBOL

VCC

LIMITS

UNIT

Power supply voltage(Pin : 1）

Load switch output voltage(Pin : 2）

LED output voltage(Pin : 12, 14, 15, 17)

FAIL output voltage(Pin : 3, 20)

Input voltage(Pin : 5, 6, 10, 11, 24)

VDAC input voltage(Pin : 8)

Power dissipation

VLOADSW

VLED

VOL

VIN

-0.3～7 < VCC

VDAC

※1

2.20

Junction Temperature

Tjmax

Topr

Tstg

150

℃

Operating temperature range

Strage temperature range

-40～+95

-55～+150

※2※3

LED drive current(Pin : 12, 14, 15, 17)

ILED

150

※1 70mm×70mm×1.6mm glass epoxy mounting. Decline by 17.6mw/℃

※2 It is correlate LED drive current with VF dispersion each of current outputs. Refer to the technical note.

※3 Current maximum for 1ch. Do not however exceed Pd.

●Operating range(Ta=25℃)

PARAMETER

Power Supply Voltage（Pin : 1）

Oscillation frequency(Pin : 26)

SYMBOL

VCC

LIMITS

4.5～30

50～550

fosc～550

40～60

UNIT

FOSC

kHz

※4 ※5

External synchronous frequency(Pin : 6)

External synchronous pulse(Pin : 6)

FSYNC

FSDUTY

※4 SYNC have to be connected to GND when external synchronizing frequency is not needed.

※5 Don’t change external synchronous frequency to internal oscillation frequency when external synchronous frequency is inputted.

* This product is not designed for protection against radioactive rays.

REV. A

12 3 4 5

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