LTC3499 Datasheet, PDF (2/16 Pages) Linear Technology – 750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection

LTC3499/LTC3499B
ABSOLUTE AXI U RATI GS (Note 1)
V_IN to GND ..................................................... – 7V to 7V
V_OUT to GND ............................................... – 0.3V to 7V
SW to V_OUT .................................................... – 7V to 1V
SW to GND
DC .............................................................. –7V to 7V
Pulsed < 100ns .......................................... –7V to 8V
SHDN to GND ................................................ – 7V to 7V
FB, SS to GND ............................................ – 0.3V to 7V
Operating Temperature Range
(Notes 3, 4) ........................................ –40°C to 85°C
Storage Temperature Range ................ – 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
MSOP .............................................................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
SHDN 1
8 VC
V_IN 2
9
7 FB
SW 3
6 V_OUT
GND 4
5 SS
DD PACKAGE
8-LEAD PLASTIC DFN
T_JMAX = 125°C, θ_JA = 45°C
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
SHDN 1
V_IN 2
SW 3
GND 4
8 VC
7 FB
6 V_OUT
5 SS
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T_JMAX = 125°C, θ_JA = 160°C/W
ORDER PART NUMBER
LTC3499EDD
LTC3499BEDD
DD PART MARKING
LBRB
LCDZ
ORDER PART NUMBER
LTC3499EMS8
LTC3499BEMS8
MS8 PART12M5A0RKING
LTBRC
LTCFB
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 specifications that apply over the full operating temperature
range, otherwise specifications are at T_A = 25°C. V_IN = 2.4V, V_OUT = 5V, SHDN = 2.4V, T_A = T_J unless otherwise noted.
SYMBOL
Supply
V_IN
V_OUT
V_FB
I_FB
I_VIN
I_SD
I_BURST
PARAMETER
CONDITIONS
Minimum Start-Up Voltage
Output Voltage Adjust Range
FB Voltage
FB Input Current
V_IN Quiescent Current
V_IN Quiescent Current in Shutdown
Quiescent Current – Burst Mode Operation
V_FB = 1.22V
No Output Load
SHDN = 0V, V_OUT = 0V
V_IN Current at 2.4V (LTC3499 Only)
V_OUT Current at 5V (LTC3499 Only)
MIN TYP MAX UNITS
●
1.6
1.8
V
●2
6
V
● 1.195 1.220 1.245
V
3
50
nA
●
300 600
µA
0.1
1
µA
20
µA
1.5
µA
3499f
2