LTC3218 Datasheet, PDF (2/12 Pages) Linear Technology – 400mA Single Wire Camera LED Charge Pump

LTC3218
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V_IN to GND ................................................... –0.3V to 6V
CPO to GND ................................................ –0.3V to 6V
ENF, ENT .......................................... –0.3V to V_IN + 0.3V
I_CPO, I_ILED (Note 2)...............................................500mA
CPO Short-Circuit Duration.............................. Indefinite
Storage Temperature Range................... –65°C to 125°C
Operating Temperature Range (Note 3) ... –40°C to 85°C
PIN CONFIGURATION
TOP VIEW
CP 1
CPO 2
I_LED 3
ENT 4
I_SETT 5
10 V_IN
9 CM
11 8 GND
7 ENF
6 I_SETF
DDB PACKAGE
10-LEAD (3mm × 2mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 76°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
LTC3218EDDB#PBF
LTC3218EDDB#TRPBF LCHS
10-Lead (3mm × 2mm) Plastic DFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC 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/
TEMPERATURE RANGE
–40°C to 85°C
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 = C_FLY = 2.2µF, C_CPO = 4.7µF, ENF = HIGH, unless
otherwise noted.
PARAMETER
Input Power Supply
V_IN Operating Voltage
I_VIN Operating Current
I_VIN Shutdown Current
LED Current
CONDITIONS
I_CPO = 0mA, 1x Mode
I_CPO = 0mA, 2x Mode
ENF = ENT = LOW, V_CPO = 0V
MIN TYP MAX UNITS
● 2.9
4.5
V
980
µA
1.7
mA
●
1.1
3
µA
Torch Current Ratio
(I_LED/I_SET)
Flash Current Ratio
(I_LED/I_SET)
Flash Current Ratio
(I_LED/I_SET)
I_LED Dropout Voltage (V_ILED)
Mode Switching Delay (LED Warm-Up Time)
I_LED = 50mA
ENT = HIGH, ENF = LOW
I_LED = 150mA
ENT = LOW, ENF = HIGH
I_LED = 150mA
ENT = ENF = HIGH
Mode Switching Threshold, Δ(V_CPO – V_ILED),
I_LED = 100mA
765
850
935
A/A
2205 2450 2695
A/A
2970 3300 3630
A/A
7
mV
0.5
ms
Turn-On Time
Minimum LED Forward Voltage
ENF, ENT to LED Current On
I_LED = 50mA
160
µs
● 2.2
V
3218fa
2