Datasheet

LTC3215
2
3215fc
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V
IN
to GND ............................................... –0.3V to 5.5V
CPO to GND
............................................. –0.3V to 5.5V
EN
................................................... –0.3V to V
IN
+ 0.3V
I
CPO
, I
ILED
(Note 2) .............................................1000mA
CPO Short-Circuit Duration
.............................. Indefinite
Storage Temperature Range
.................. –65°C to 125°C
Operating Temperature Range (Note 3)
....–40°C to 85°C
(Note 1)
TOP VIEW
11
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
2
1
C1
–
GND
C2
–
V
IN
EN
C2
+
C1
+
CPO
I
LED
I
SET
T
JMAX
= 125°C, θ
JA
= 43°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3215EDD#PBF LTC3215EDD#TRPBF LBPX
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
Consult LT C Marketing for parts specified with wider operating temperature ranges.
Consult LT C 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/
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Power Supply
V
IN
Operating Voltage
●
2.9 4.4 V
I
VIN
Operating Current I
CPO
= 0mA, 1x Mode
I
CPO
= 0mA, 1.5x
I
CPO
= 0mA, 2x Mode
300
7
9.2
µA
mA
mA
I
VIN
Shutdown Current EN = LOW 2.5 7 µA
LED Current
LED Current Ratio (I
LED
/I
SET
) I
LED
= 200mA to 600mA
●
3139 3270 3400 mA/mA
I
LED
Dropout Voltage Mode Switch Threshold, I
LED
= 200mA 120 mV
Mode Switching Delay (LED Warm
-Up Time) 2.5 ms
LED Current On Time
EN
to LED Current On
130 µs
Charge Pump (CPO)
1x Mode Output Voltage I
CPO
= 0mA V
IN
V
1.5x Mode Output Voltage I
CPO
= 0mA 4.6 V
2x Mode Output Voltage I
CPO
= 0mA 5.1 V
1x Mode Output Impedance 0.25 Ω
1.5x Mode Output Impedance V
IN
= 3.4V, V
CPO
< 4.6V 1.5 Ω
2x Mode Output Impedance V
IN
= 3.2V, V
CPO
< 5.1V 1.7 Ω
CLK Frequency
●
0.6 0.9 1.2 MHz
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3.6V, C
IN
= C1 = C2 = 2.2µF, C
CPO
= 4.7µF.