LTC3527/LTC3527-1
2
35271fc
ELECTRICAL CHARACTERISTICS
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V
IN
, V
IN1
, V
IN2
Voltage .................................–0.3V to 6V
SW1, SW2 Voltage (DC) .............................. –0.3V to 6V
(Pulsed < 100ns) .....................................–0.3V to 7V
SHDN1, SHDN2, FB1, FB2 Voltage ...............–0.3V to 6V
V
OUT1
, V
OUT2
................................................–0.3V to 6V
MODE, FSEL, PGOOD1, PGOOD2 .................–0.3V to 6V
Operating Temperature (Notes 2, 5) .........–40°C to 85°C
Junction Temperature ........................................... 125°C
Storage Temperature Range ...................–65°C to 125°C
(Note 1)
16
17
PGND
15 14 13
5 6 7 8
TOP VIEW
UD PACKAGE
16-LEAD (3mm s 3mm) PLASTIC QFN
9
10
11
12
4
3
2
1SHDN1
FB1
MODE
V
IN1
SHDN
FB2
FSEL
V
IN2
PGOOD1
V
IN
GND
PGOOD2
V
OUT1
SW1
SW2
V
OUT2
T
JMAX
= 125°C, θ
JA
= 68°C/W
EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Start-Up Voltage I
LOAD
= 1mA 0.7 0.88 V
Output Voltage Adjust Range V
OUT1
V
OUT1
V
OUT2
V
OUT2
l
l
1.7
1.6
1.7
1.6
5.25
5.25
5.25
5.25
V
V
V
V
Line Regulation V
IN
= 1V to 5V 0.005 %/V
Feedback Voltage FB1, FB2
l
1.176 1.20 1.224 V
Feedback Input Current FB1, FB2 V
FB1,2
= 1.20V 1 50 nA
Quiescent Current: Shutdown V
SHDN1
= V
SHDN2
= 0V, Not Including Switch
Leakage, V
OUT1
= V
OUT2
= 0V
0.1 2 μA
Quiescent Current: Burst Mode Operation Measured on V
OUT
, V
FB1
= V
FB2
= 1.5V 12 μA
Quiescent Current: Active V
FB1
= V
FB2
> 1.2V (Note 3) 500 900 μA
NMOS Switch Leakage Current (LTC3527) V
SW1,2
= 5V, SHDN1,2 = 0V
0.1 10 μA
The l denotes the specifi cations which apply over the full operating
temperature range, –40°C to 85°C. V
IN
= V
IN1
= V
IN2
= 1.2V, V
OUT1
= V
OUT2
= 3.3V, T
A
= 25°C, unless otherwise noted.
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3527EUD#PBF LTC3527EUD#TRPBF LDDK
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
LTC3527EUD-1#PBF LTC3527EUD-1#TRPBF LCXP
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3527EUD LTC3527EUD#TR LDDK
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
LTC3527EUD-1 LTC3527EUD-1#TR LCXP
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
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/