bd8118fm ROHM Co. Ltd., bd8118fm Datasheet

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bd8118fm

Manufacturer Part Number
bd8118fm
Description
White Led Driver For Car Navigation Back Light
Manufacturer
ROHM Co. Ltd.
Datasheet
1.BD8118FM.pdf (5 pages)

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
BOSTOCK HK LIMITED BOSTOCK HK LIMITED
Part Number:
bd8118fm-E2
Manufacturer:
ROHM
Quantity:
10 000
●ABSOLUTE MAXIMUM RATINGS (Ta=25℃)
●Operating range(Ta=25℃)
STRUCTURE
PRODUCT NAME
TYPE
FEATURES
* This product is not designed for protection against radioactive rays.
※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.
※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.
Power Supply Voltage（Pin : 1）
Oscillation frequency(Pin : 26)
External synchronous frequency(Pin : 6)
External synchronous pulse(Pin : 6)
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
Junction Temperature
Operating temperature range
Strage temperature range
LED drive current(Pin : 12, 14, 15, 17)
PARAMETER
PARAMETER
・Step-up DC/DC converter
・PWM adjustment
・4 parallel current output （output current is set with external resister）
・LED open detection circuit
・FAIL output (self diagnosis)
White LED driver for car navigation back light
Silicon Monolithic Integrated Circuit
BD８１1８FM
Built in OSC
※4 ※5
SYMBOL
V
Tjmax
LOADSW
V
V
Topr
Tstg
V
V
I
V
Pd
LED
DAC
LED
CC
OL
IN
SYMBOL
REV. A
F
F
F
SDUTY
V
SYNC
OSC
CC
-0.3～7 < VCC
-0.3～7 < VCC
-55～+150
150
-40～+95
LIMITS
150
・Built in UVLO
・Built in OVP
・Built in TSD
・Built in OCP
2.20
36
36
36
7
※2※3
fosc～550
※1
50～550
4.5～30
40～60
LIMITS
UNIT
mA
℃
℃
℃
V
V
V
V
V
V
W
UNIT
kHz
kHz
V
%
1/4

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bd8118fm Summary of contents

Page 1

STRUCTURE Silicon Monolithic Integrated Circuit PRODUCT NAME White LED driver for car navigation back light TYPE BD８１1８FM FEATURES ・Step-up DC/DC converter Built in OSC ・4 parallel current output （output current is set with external resister） ・LED open detection circuit ・PWM ...

Page 2

... Input high voltage Input low voltage Input current Input current [FAIL output] (Pin : 3, 20) FAIL low voltage This product is not designed for protection against radioactive rays. ◎ ● PHYSICAL DIMENSIONS・MARKING BD8118FM HSOP-M28 （UNIT:mm） LIMIT SYMBOL Min Typ Max I 2.5 6 ...

Page 3

DIAGRAM VCC EN SYNC RT COMP SS PWM VDAC ISET ●Pin No, Pin Name, Function Pin Pin Function No Name 1 V Power supply CC 2 LOADSW FET pin for load sw （Open Drain） 3 FAIL1 Fail signal output ...

Page 4

Operation Notes (1) Absolute maximum ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC damage. Assumptions should not be made regarding the state of ...

Page 5

No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...

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