LTC3215 Datasheet, PDF (2/12 Pages) Linear Technology – 700mA Low Noise High Current LED Charge Pump

LTC3215
ABSOLUTE AXI U RATI GS
(Note 1)
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
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
C2⁺ 1
C1⁺ 2
CPO 3
I_LED 4
I_SET 5
10 C1^–
9 GND
11
8 C2^–
7 V_IN
6 EN
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 43°C/W
EXPOSED PIN (PIN 11) IS GND
MUST BE SOLDERED TO PCB
ORDER PART
NUMBER
LTC3215EDD
DD PART
MARKING
LBPX
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● 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.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input Power Supply
V_IN Operating Voltage
I_VIN Operating Current
I_VIN Shutdown Current
LED Current
I_CPO = 0mA, 1x Mode
I_CPO = 0mA, 1.5x
I_CPO = 0mA, 2x Mode
EN = LOW
● 2.9
4.4
V
300
µA
7
mA
9.2
mA
2.5
7
µA
LED Current Ratio (I_LED/I_SET)
I_LED Dropout Voltage
Mode Switching Delay (LED Warmup Time)
I_LED = 200mA to 600mA
Mode Switch Threshold, I_LED = 200mA
● 3139 3270 3400 mA/mA
120
mV
2.5
ms
LED Current On Time
EN to LED Current On
130
µs
Charge Pump (CPO)
1x Mode Output Voltage
1.5x Mode Output Voltage
2x Mode Output Voltage
1x Mode Output Impedance
I_CPO = 0mA
I_CPO = 0mA
I_CPO = 0mA
V_IN
V
4.6
V
5.1
V
0.25
Ω
1.5x Mode Output Impedance
2x Mode Output Impedance
CLK Frequency
V_IN = 3.4V, V_CPO < 4.6V, C1 = C2 = 2.2µF
1.5
Ω
V_IN = 3.2V, V_CPO < 5.1V, C1 = C2 = 2.2µF
1.7
Ω
● 0.6
0.9
1.2
MHz
EN
High Level Input Voltage (V_IH)
Low Level Input Voltage (V_IL)
Input Current (I_IH)
Input Current (I_IL)
● 1.4
●
● –1
● –1
V
0.4
V
1
µA
1
µA
3215f
2