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LTC3407 Datasheet(PDF) 2 Page - Linear Technology

No. de Pieza. LTC3407
Descripción  Dual Synchronous, 600mA, 1.5MHz Step-Down DC/DC Regulator
Descarga  16 Pages
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Fabricante  LINER [Linear Technology]
Página de inicio  http://www.linear.com
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LTC3407 Datasheet(HTML) 2 Page - Linear Technology

 
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LTC3407
2
sn3407 3407fs
TOP VIEW
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
EXPOSED PAD IS PGND (PIN 11)
MUST BE CONNECTED TO GND
10
11
9
6
7
8
4
5
3
2
1
VFB2
RUN2
POR
SW2
MODE/
SYNC
VFB1
RUN1
VIN
SW1
GND
VIN Voltages.................................................– 0.3V to 6V
VFB1, VFB2, RUN1, RUN2
Voltages ..................................... – 0.3V to VIN + 0.3V
MODE/SYNC Voltage ...................... – 0.3V to VIN + 0.3V
SW1, SW2 Voltage ......................... – 0.3V to VIN + 0.3V
POR Voltage ................................................– 0.3V to 6V
Ambient Operating Temperature
Range (Note 2) ................................... – 40°C to 85°C
ABSOLUTE
AXI U
RATI GS
(Note 1)
ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, unless otherwise specified. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Operating Voltage Range
2.5
5.5
V
IFB
Feedback Pin Input Current
30
nA
VFB
Feedback Voltage (Note 3)
0°C ≤ TA ≤ 85°C
0.588
0.6
0.612
V
–40°C ≤ TA ≤ 85°C
0.585
0.6
0.612
V
∆VLINE REG
Reference Voltage Line Regulation
VIN = 2.5V to 5.5V (Note 3)
0.3
0.5
%/V
∆VLOAD REG
Output Voltage Load Regulation
(Note 3)
0.5
%
IS
Input DC Supply Current
Active Mode
VFB1 = VFB2 = 0.5V
600
800
µA
Sleep Mode
VFB1 = VFB2 = 0.63V, MODE/SYNC = 3.6V
40
60
µA
Shutdown
RUN = 0V, VIN = 5.5V, MODE/SYNC = 0V
0.1
1
µA
fOSC
Oscillator Frequency
VFBX = 0.6V
1.2
1.5
1.8
MHz
fSYNC
Synchronization Frequency
1.5
MHz
ILIM
Peak Switch Current Limit
VIN = 3V, VFBX = 0.5V, Duty Cycle <35%
0.75
1
1.25
A
RDS(ON)
Top Switch On-Resistance
(Note 6)
0.35
0.45
Bottom Switch On-Resistance
(Note 6)
0.30
0.45
ISW(LKG)
Switch Leakage Current
VIN = 5V, VRUN = 0V, VFBX = 0V
0.01
1
µA
Junction Temperature (Note 5) ............................. 125°C
Storage Temperature Range
LTC3407EMSE ................................. – 65°C to 150°C
LTC3407EDD .................................... – 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
LTC3407EMSE only .......................................... 300°C
ORDER PART
NUMBER
DD PART MARKING
TJMAX = 125°C, θJA = 45°C/W, θJC = 10°C/W
LAGK
LTC3407EDD
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ORDER PART
NUMBER
MSE PART MARKING
TJMAX = 125°C, θJA = 45°C/W, θJC = 10°C/W
LTABA
LTC3407EMSE
TOP VIEW
1
2
3
4
5
VFB1
RUN1
VIN
SW1
GND
10
9
8
7
6
VFB2
RUN2
POR
SW2
MODE/
SYNC
11
MSE PACKAGE
10-LEAD PLASTIC MSOP
EXPOSED PAD IS PGND (PIN 11)
MUST BE CONNECTED TO GND


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