LTC3214 Datasheet, PDF (2/12 Pages) Linear Technology – 500mA Camera LED Charge Pump

LTC3214
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) ............................................. 600mA
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 PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB GND
ORDER PART NUMBER DD PART MARKING
LTC3214EDD
LBVQ
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.
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
4.5
V
980
µA
4.8
mA
6.7
mA
2.5
7.5
µA
LED Current Ratio (I_LED/I_SET)
I_LED Dropout Voltage (V_ILED)
Mode Switching Delay (LED Warmup Time)
I_LED = 150mA to 500mA
Mode Switch Threshold, I_LED = 200mA
2715 2950 3190 mA/mA
40
mV
2.5
ms
LED Current On Time
Charge Pump (CPO)
EN to LED Current On
100
µs
Charge Pump Output Clamp Voltage
5
V
1x Mode Output Impedance
0.70
Ω
1.5x Mode Output Impedance
3.2
Ω
2x Mode Output Impedance
3.5
Ω
CLK Frequency
EN
V_IN = 3V
● 0.6
0.9
1.2
MHz
High Level Input Voltage (V_IH)
Low Level Input Voltage (V_IL)
Input Current (I_IH)
Input Current (I_IL)
V_EN = 3.6V
● 1.4
V
●
0.4
V
●
14.4
20
µA
● –1
1
µA
3214fa
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