Datasheet

LTC3529
2
3529fb
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V
IN
, V
OUT
Voltage ........................................... –0.3 to 6V
SHDN, RST, FAUL T Voltage ............................ –0.3 to 6V
SW Voltage
DC .............................................................. –0.3 to 6V
Pulsed <100ns .............................................–1V to 7V
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)
TOP VIEW
V
IN
RST
SNSGND
FAULT
V
OUT
SW
SHDN
PGND
DCB PACKAGE
8-LEAD (2mm s 3mm) PLASTIC DFN
9
3
4
2
1
6
5
7
8
T
JMAX
= 125°C, θ
JA
= 64°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
The l 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
= 5V unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range 1.8 5.25 V
Output Voltage
l
4.85 5 5.15 V
Quiescent Current - Shutdown V
SHDN
= 0V, V
OUT
= 0V 0.01 1 μA
NMOS Switch Leakage Current V
IN
= V
SW
= 5V
l
0.3 15 μA
PMOS Switch Leakage Current V
SW
= 0V, V
OUT
= 5V
l
0.3 15 μA
NMOS Switch On Resistance 0.09
Ω
PMOS Switch On Resistance 0.12
Ω
NMOS Current Limit V
OUT
= 4.5V (Note 4)
l
1.5 A
Current Limit Delay Time to Output (Note 5) 40 ns
Maximum Duty Cycle V
OUT
= 4.5V
l
80 87 %
Minimum Duty Cycle V
OUT
= 5.5V
l
0%
Switching Frequency V
OUT
= 4.5V
l
1.2 1.5 1.8 MHz
SHDN, RST Input High Voltage
l
1V
SHDN, RST Input Low Voltage
l
0.35 V
SHDN, RST Input Current V
SHDN
, V
OUT
, V
RST
= 5.5V
l
0.01 1 μA
Soft-Start Time 2ms
Line Regulation V
IN
= 1.8V to 5.25V 0.03 %/V
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3529EDCB#PBF LTC3529EDCB#TRPBF LCTZ
8-Lead (2mm × 3mm) Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/