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| LTC3217_15 Datasheet, PDF (2/12 Pages) Linear Technology – 600mA Low Noise Multi-LED Camera Light Charge Pumps | |||
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LTC3217
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VBAT, CPO to GND......................................... â0.3V to 6V
EN1, EN2......................................â0.3V to (VBAT + 0.3V)
ICPO (Note 2) ........................................................600mA
IILED1-4 (Note 3) ...................................................150mA
CPO Short-Circuit Duration.............................. Indeï¬nite
Operating Temperature Range (Note 4)....â40°C to 85°C
Storage Temperature Range................... â65°C to 125°C
PIN CONFIGURATION
TOP VIEW
16 15 14 13
C1P 1
12 C2M
CPO 2
11 EN2
17
EN1 3
10 ISET2
LED1 4
9 ISET1
5678
UD PACKAGE
16-LEAD (3mm s 3mm) PLASTIC QFN
TJMAX = 125°C, θJA = 68°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3217EUD#PBF
LTC3217EUD#TRPBF
LBTQ
16-Lead (3mm à 3mm) Plastic QFN
Consult LTC Marketing for parts speciï¬ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based ï¬nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel speciï¬cations, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
â40°C to 85°C
ELECTRICAL CHARACTERISTICS The l denotes the speciï¬cations which apply over the full operating
temperature range, otherwise speciï¬cations are at TA = 25°C. VBAT = 3.6V, C1 = C2 = C3 = C4 = 2.2μF, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VBAT Operating Voltage
IVBAT Operating Current
VBAT Shutdown Current
LED 1-4 Current
RISET1 = RISET2 = 20k, EN1 = EN2 = High
ICPO = 0mA, 1x Mode
ICPO = 0mA, 1.5x Mode
ICPO = 0mA, 2x Mode
â 2.9
4.5
V
1
mA
4
mA
6
mA
4
μA
LED Current Ratio (ILED/ISET1/2)
LED Dropout Voltage
Mode Switching Delay
ILED = 25mA to 100mA
Mode Switch Threshold, ILED = 100mA
EN1 Only
â 370
400
430 mA/mA
330
mV
2.5
ms
LED Current Matching
Charge Pump (CPO)
Any Two Outputs, ILED = 100mA
1
%
1x Mode Output Voltage
1.5x Mode Output Voltage
2x Mode Output Voltage
1x Mode Output Impedance
ICPO = 0mA
ICPO = 0mA
ICPO = 0mA
VBAT
V
4.5
V
5.05
V
0.5
Ω
1.5x Mode Output Impedance
2x Mode Output Impedance
CLOCK Frequency
VBAT = 3.4V, VCPO ⤠4.6V (Note 5)
VBAT = 3.2V, VCPO ⤠5.1V (Note 5)
2.8
Ω
3.2
Ω
â 0.6
0.85 1.15
MHz
3217fa
2
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