Datasheet

LTC3533
2
3533f
PACKAGE/ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
V
IN
, PV
IN
Voltages ...........................................–0.3 to 6V
V
OUT
, PV
OUT
Voltages ......................................–0.3 to 6V
SW1, SW2 Voltages
DC ...............................................................–0.3 to 6V
Pulsed < 100ns ...........................................–0.3 to 7V
V
C
, FB, RUN/SS, BURST Voltages ..................–0.3 to 6 V
Operating Temperature Range (Note 2) ... –40°C to 85°C
Maximum Junction Temperature (Note 3) ............ 125°C
Storage Temperature Range ................... –65°C to 125°C
(Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Operating Range
●
1.8 5.5 V
Output Voltage Adjust Range
●
1.8 5.25 V
Feedback Voltage
●
1.196 1.22 1.244 V
Feedback Input Current V
FB
= 1.22V 1 50 nA
Quiescent Current – Burst Mode Operation V
C
= 0V, V
BURST
= 0V (Note 4) 40 50 µA
Quiescent Current – Shutdown V
RUN
= 0V, Not Including Switch Leakage 0.1 1 µA
Quiescent Current – Active V
C
= 0V, BURST = 3.6V (Note 4) 700 1100 µA
Input Current Limit
●
3.5 4.5 A
Peak Current Limit 7A
Reverse Current Limit 0.5 A
NMOS Switch Leakage Switches B and C 0.1 5 µA
PMOS Switch Leakage Switches A and D 0.1 10 µA
NMOS Switch On Resistance Switches B and C 60 mΩ
PMOS Switch On Resistance Switches A and D 80 mΩ
Maximum Duty Cycle Boost (% Switch C On)
Buck (% Switch A On)
●
●
80
100
90 %
%
Minimum Duty Cycle
●
0%
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
C
FB
RUN/SS
PV
IN
V
IN
PV
OUT
V
OUT
R
T
BURST
SGND
SW1
PGND
PGND
SW2
TOP VIEW
DE PACKAGE
14-LEAD (4mm × 3mm) PLASTIC DFN
15
T
JMAX
= 125°C, θ
JA
= 43°C/W, θ
JC
= 4.3°C/W
EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER DE PART MARKING
LTC3533EDE 3533
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 specifi ed with wider operating temperature ranges.
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= 3.6V, V
OUT
= 3.3V, unless otherwise noted.