LTC3490 Datasheet, PDF (2/12 Pages) Linear Technology – Single Cell 350mA LED Driver

LTC3490
ABSOLUTE AXI U RATI GS (Note 1)
Supply Voltage (V_IN) ................................... – 0.3V to 6V
Input Voltages (CTRL/SHDN, CELLS) ......... – 0.3V to 6V
Output Voltages (CAP, LED, SW) ................ – 0.3V to 6V
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
Lead Temperature (Soldering, 10 sec, S8) .......... 300°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
CELLS 1
8 CTRL/SHDN
V_IN 2
9
7 LOBAT
SW 3
6 CAP
GND 4
5 LED
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 43°C/ W (NOTE 4)
EXPOSED PAD (PIN 9) IS GND
MUST BE SOLDERED TO PCB (NOTE 5)
TOP VIEW
CELLS 1
V_IN 2
SW 3
GND 4
8 CTRL/SHDN
7 LOBAT
6 CAP
5 LED
S8 PACKAGE
8-LEAD PLASTIC SO
T_JMAX = 125°C, θ_JA = 150°C/ W (NOTE 4)
ORDER PART NUMBER
DD PART MARKING
ORDER PART NUMBER
LTC3490EDD
LBRQ
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.
LTC3490ES8
S8 PART MARKING
3490
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are T_A = 25°C. V_IN = 2.5V unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
V_IN
V_IN(START)
I_LED(MAX)
Input Supply Range
Minimum Start-Up Voltage
LED Drive Current
(Note 3)
V_CTRL/SHDN = V_IN, DD Package
25°C to 85°C
– 40°C to <25°C
1
3.2
0.9
1
330 350 370
310 350 385
V_CTRL/SHDN = V_IN, S8 Package
25°C to 85°C
– 40°C to <25°C
337 350 363
325 345 365
I_LED(SHDN)
V_LED
V_LED(OVL)
I_IN(SHDN)
I_IN(ACTIVE)
f_SW
I_L(NMOS)
R_ON(NMOS)
LED Drive Current in Shutdown
Output Compliance Voltage
Output Voltage Overvoltage Limit
Input Current, Shutdown
Input Current, Active
Switching Frequency
Leakage Current, NMOS Switch
On-Resistance, NMOS Switch
V_CTRL/SHDN = 0V
Open LED
V_CTRL/SHDN = 0V, Excluding Switch Leakage
Excluding Load Power
0.1
1
● 2.8
4
● 4.2
4.7
20
50
20
30
● 1.0
1.3
1.6
0.1
0.1
2
UNITS
V
V
mA
mA
mA
mA
µA
V
V
µA
mA
MHz
µA
Ω
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