LTC3528_15 Datasheet, PDF (2/18 Pages) Linear Technology – 1A, 1MHz Synchronous Step-Up DC/DC Converters

LTC3528/LTC3528B
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V_IN Voltage.................................................... –0.3V to 6V
SW Voltage
DC............................................................. –0.3V to 6V
Pulsed < 100ns......................................... –0.3V to 7V
SHDN, FB Voltage......................................... –0.3V to 6V
V_OUT.............................................................. –0.3V to 6V
PGOOD.......................................................... –0.3V to 6V
Operating Junction Temperature Range
(Notes 2, 5)............................................. –40°C to 125°C
Storage Temperature Range.................... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW
SHDN 1
8 V_IN
FB 2
7 SGND
9
PGOOD 3
6 PGND
V_OUT 4
5 SW
DDB PACKAGE
8-LEAD (3mm × 2mm) PLASTIC DFN
T_JMAX = 125°C, θ_JA = 76°C/W (NOTE 6)
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3528EDDB#PBF
LTC3528BEDDB#PBF
LTC3528EDDB#TRPBF LCYD
LTC3528BEDDB#TRPBF LDDG
8-Lead (3mm × 2mm) Plastic DFN
8-Lead (3mm × 2mm) Plastic DFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
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 125°C
–40°C to 125°C
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the specified operating
temperature range, otherwise specifications are at T_A = 25°C (Note 2). V_IN = 1.2V, V_OUT = 3.3V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Minimum Start-Up Voltage
Output Voltage Adjust Range
Feedback Voltage
I_LOAD = 1mA
T_A = 0°C to 85°C
(Note 7)
l
0.70 0.88
V
● 1.7
1.6
5.25
V
5.25
V
● 1.170 1.200 1.230
V
Feedback Input Current
Quiescent Current—Shutdown
Quiescent Current—Active
Quiescent Current—Burst
N-Channel MOSFET Switch Leakage Current
P-Channel MOSFET Switch Leakage Current
N-Channel MOSFET Switch On-Resistance
V_FB = 1.3V
V_SHDN = 0V, Not Including Switch Leakage, V_OUT = 0V
Measured on V_OUT, Nonswitching (Note 4)
Measured on V_OUT, FB > 1.230V
V_SW = 5V
V_SW = 5V, V_OUT = 0V
1
50
nA
0.01
1
µA
300
500
µA
12
20
µA
0.1
10
µA
0.1
10
µA
0.175
Ω
P-Channel MOSFET Switch On-Resistance
0.250
Ω
N-Channel MOSFET Current Limit
l 1.0
1.5
A
Current Limit Delay Time to Output
(Note 3)
60
ns
Maximum Duty Cycle
Minimum Duty Cycle
Frequency
V_FB = 1.15V
V_FB = 1.3V
l 88
93
%
l
0
%
l 0.7
1.0
1.3
MHz
3528fd
2