LT3498 データシートの表示（PDF） - Linear Technology
部品番号
コンポーネント説明
メーカー
LT3498 Datasheet PDF : 24 Pages
| |||
LT3498
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Input Voltage (VIN)....................................................12V
CTRL1 and CTRL2 Voltage........................................12V
FB2 Voltage..............................................................2.5V
VOUT2 Voltage ...........................................................32V
SW1 and SW2 Voltage..............................................32V
CAP1 and CAP2 Voltage............................................32V
LED1 Voltage ............................................................32V
Operating Junction Temperature Range ...–40°C to 85°C
Maximum Junction Temperature........................... 125°C
Storage Temperature Range...................–65°C to 150°C
PIN CONFIGURATION
TOP VIEW
LED1 1
CTRL1 2
GND1 3
GND2 4
CTRL2 5
FB2 6
12 CAP1
11 SW1
13 10 VIN
9 SW2
8 CAP2
7 VOUT2
DDB PACKAGE
12-LEAD (3mm × 2mm) PLASTIC DFN
TJMAX = 125°C, θJA = 160°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LT3498EDDB#PBF
LT3498EDDB#TRPBF
LCQF
12-Lead (3mm × 2mm) Plastic DFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VIN = 3V, VCTRL1 = VCTRL2 = 3V.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Operating Voltage
2.5
V
Maximum Operating Voltage
12
V
Supply Current (LED Off, OLED Off)
Supply Current (LED On, OLED Off)
VIN = 3V, VCTRL1 = 0V, VCTRL2 = 0V
VIN = 3V, VCTRL1 = 3V, VCTRL2 = 0V, VCAP1 = 24V, VLED1
= 23V
8
10
μA
1.6
2
mA
Supply Current (LED Off, OLED On)
Supply Current (LED On, OLED On)
VIN = 3V, VCTRL1 = 0V, VCTRL2 = 3V, VFB2 = 3V
VIN = 3V, VCTRL1 = 3V, VCTRL2 = 3V, VCAP1 = 24V, VLED1
= 23V
230
280
μA
1.65 2.05
mA
VCTRL1 for Full LED Current
VCTRL2 for Full OLED Brightness
VCTRL1 or VCTRL2 to Turn On IC
VCTRL1 and VCTRL2 to Shut Down IC
CTRL1, CTRL2 Pin Bias Current
● 1.5
V
● 125
mV
●
75
mV
100
nA
LED Driver
LED Current Sense Voltage (VCAP – VLED)
CAP1, LED1 Pin Bias Current
VCAP1 = 24V, ISW = 200mA
VCAP1 = 16V, VLED1 = 16V
● 190
200
210
mV
20
30
μA
3498fa
2
Share Link: 