lt3498eddb-trpbf Linear Technology Corporation, lt3498eddb-trpbf Datasheet - Page 2

• Manufacturer Part Number: lt3498eddb-trpbf
• Description: 20ma Led Driver And Oled Driver With Integrated Schottky In 3mm X 2mm Dfn
• Manufacturer: Linear Technology Corporation

ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
LT3498
(Notes 1, 2)
Input Voltage (V
CTRL1 and CTRL2 Voltage ........................................12V
FB2 Voltage ..............................................................2.5V
V
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
temperature range, otherwise specifi cations are at T
PARAMETER
Minimum Operating Voltage
Maximum Operating Voltage
Supply Current (LED Off, OLED Off)
Supply Current (LED On, OLED Off)
Supply Current (LED Off, OLED On)
Supply Current (LED On, OLED On)
V
V
V
V
CTRL1, CTRL2 Pin Bias Current
LED Driver
LED Current Sense Voltage (V
CAP1, LED1 Pin Bias Current
V
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
2
CTRL1
CTRL2
CTRL1
CTRL1
CAP1
OUT2
, V
for Full LED Current
for Full OLED Brightness
or V
and V
LED1
Voltage ...........................................................32V
CESAT
CTRL2
CTRL2
Common Mode Minimum Voltage
to Turn On I
to Shut Down I
IN
) ....................................................12V
C
CAP
– V
C
LED
)
CONDITIONS
V
V
V
V
V
V
V
V
I
SW
IN
IN
LED1
IN
IN
LED1
CAP1
CAP1
= 3V, V
= 3V, V
= 3V, V
= 3V, V
= 200mA
= 23V
= 23V
= 24V, I
= 16V, V
A
= 25°C, V
CTRL1
CTRL1
CTRL1
CTRL1
SW
LED1
The
= 0V, V
= 3V, V
= 0V, V
= 3V, V
= 200mA
= 16V
●
IN
denotes the specifi cations which apply over the full operating
= 3V, V
CTRL2
CTRL2
CTRL2
CTRL2
PACKAGE/ORDER INFORMATION
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
= 0V
= 0V, V
= 3V, V
= 3V, V
ORDER PART NUMBER
CTRL1
CAP1
FB2
CAP1
LT3498EDDB
= V
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
= 3V
CTRL2
= 24V,
= 24V,
= 3V.
12-LEAD (3mm 2mm) PLASTIC DFN
CTRL1
CTRL2
GND1
GND2
LED1
T
http://www.linear.com/leadfree/
FB2
JMAX
●
●
●
●
●
●
1
2
3
4
5
6
= 125°C, θ
DDB PACKAGE
TOP VIEW
13
MIN
125
190
300
2.5
1.5
1.8
88
JA
= 160°C/W
DDB PART MARKING
12
11
10
9
8
7
CAP1
SW1
V
SW2
CAP2
V
IN
OUT2
1.65
TYP
230
100
200
425
250
1.6
2.3
20
90
8
LCQF
MAX
2.05
280
210
2.5
2.8
12
10
75
30
2
UNITS
MHz
3498f
mA
mA
mV
mV
mV
mA
mV
µA
µA
nA
µA
%
V
V
V
V