LTC3527-1_15 Datasheet, PDF (2/22 Pages) Linear Technology – Dual 800mA/400mA, 1.2MHz/2.2MHz Synchronous Step-Up DC/DC Converters

LTC3527/LTC3527-1
ABSOLUTE MAXIMUM RATINGS
(Note 1)
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
PIN CONFIGURATION
TOP VIEW
16 15 14 13
SHDN1 1
12 SHDN2
FB1 2
MODE 3
17
PGND
11 FB2
10 FSEL
V_IN1 4
9 V_IN2
5678
UD PACKAGE
16-LEAD (3mm s 3mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 68°C/W
EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3527EUD#PBF
LTC3527EUD#TRPBF LDDK
16-Lead (3mm × 3mm) Plastic QFN
LTC3527EUD-1#PBF
LTC3527EUD-1#TRPBF LCXP
16-Lead (3mm × 3mm) Plastic QFN
LEAD BASED FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3527EUD
LTC3527EUD#TR
LDDK
16-Lead (3mm × 3mm) Plastic QFN
LTC3527EUD-1
LTC3527EUD-1#TR
LCXP
16-Lead (3mm × 3mm) Plastic QFN
Consult LTC Marketing for parts specified 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 specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
TEMPERATURE RANGE
–40°C to 85°C
–40°C to 85°C
ELECTRICAL CHARACTERISTICS The l denotes the specifications 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.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Start-Up Voltage
Output Voltage Adjust Range
Line Regulation
Feedback Voltage FB1, FB2
I_LOAD = 1mA
V_OUT1
V_OUT1
V_OUT2
V_OUT2
V_IN = 1V to 5V
0.7
0.88
V
l 1.7
1.6
l 1.7
1.6
5.25
V
5.25
V
5.25
V
5.25
V
0.005
%/V
l 1.176 1.20 1.224
V
Feedback Input Current FB1, FB2
V_FB1,2 = 1.20V
1
50
nA
Quiescent Current: Shutdown
Quiescent Current: Burst Mode Operation
Quiescent Current: Active
NMOS Switch Leakage Current (LTC3527)
V_SHDN1 = V_SHDN2 = 0V, Not Including Switch
Leakage, V_OUT1 = V_OUT2 = 0V
Measured on V_OUT, V_FB1 = V_FB2 = 1.5V
V_FB1 = V_FB2 > 1.2V (Note 3)
V_SW1,2 = 5V, SHDN1,2 = 0V
0.1
2
μA
12
μA
500
900
μA
0.1
10
μA
35271fc
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