參數(shù)資料
型號(hào)： LQH32CN150K53
廠商： Linear Technology Corporation
英文描述： 20mA LED Driver and OLED Driver with Integrated Schottky in 3mm x 2mm DFN
中文描述： 20mA的LED驅(qū)動(dòng)器和3毫米的OLED驅(qū)動(dòng)器集成肖特基x 2mm DFN封裝
文件頁(yè)數(shù)： 2/24頁(yè)
文件大?。?/td> 449K
代理商： LQH32CN150K53
LT3498
2
3498f
PACKAGE/ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 3V, V
CTRL1
= V
CTRL2
= 3V.
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Input Voltage (V
IN
) ....................................................12V
CTRL1 and CTRL2 Voltage .......................................12V
FB2 Voltage .............................................................2.5V
V
OUT2
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
PARAMETER
Minimum Operating Voltage
Maximum Operating Voltage
Supply Current (LED Off, OLED Off)
Supply Current (LED On, OLED Off)
CONDITIONS
MIN
2.5
TYP
MAX
UNITS
V
V
12
10
2
V
IN
= 3V, V
CTRL1
= 0V, V
CTRL2
= 0V
V
IN
= 3V, V
CTRL1
= 3V, V
CTRL2
= 0V, V
CAP1
= 24V,
V
LED1
= 23V
V
IN
= 3V, V
CTRL1
= 0V, V
CTRL2
= 3V, V
FB2
= 3V
V
IN
= 3V, V
CTRL1
= 3V, V
CTRL2
= 3V, V
CAP1
= 24V,
V
LED1
= 23V
8
μA
mA
1.6
Supply Current (LED Off, OLED On)
Supply Current (LED On, OLED On)
230
1.65
280
2.05
μA
mA
V
CTRL1
for Full LED Current
V
CTRL2
for Full OLED Brightness
V
CTRL1
or V
CTRL2
to Turn On I
C
V
CTRL1
and V
CTRL2
to Shut Down I
C
CTRL1, CTRL2 Pin Bias Current
LED Driver
LED Current Sense Voltage (V
CAP
– V
LED
)
CAP1, LED1 Pin Bias Current
V
CAP1
, V
LED1
Common Mode Minimum Voltage
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
CESAT
●
1.5
V
●
125
mV
mV
nA
●
75
100
V
CAP1
= 24V, I
SW
= 200mA
V
CAP1
= 16V, V
LED1
= 16V
●
190
200
20
210
30
2.5
2.8
mV
μA
V
●
1.8
88
300
2.3
90
425
250
MHz
%
●
mA
mV
I
SW
= 200mA
TOP VIEW
13
DDB PACKAGE
12-LEAD (3mm
×
2mm) PLASTIC DFN
T
= 125°C,
θ
= 160°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
LED1
CTRL1
GND1
GND2
CTRL2
FB2
CAP1
SW1
V
IN
SW2
CAP2
V
OUT2
8
7
10
9
11
12
5
6
4
2
3
1
ORDER PART NUMBER
LT3498EDDB
DDB PART MARKING
LCQF
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
●
denotes the specifications which apply over the full operating
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