LTC3407-4 Linear Technology, LTC3407-4 Datasheet - Page 2

• Manufacturer Part Number: LTC3407-4
• Description: Dual Synchronous 800mA 2.25MHz Step-Down DC/DC Regulator
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
LTC3407-4
V
V
RUN1, RUN2 Voltages ................................ –0.3V to V
MODE/SYNC Voltage .................................. – 0.3V to V
SW1, SW2 Voltage ......................... – 0.3V to V
POR Voltage ................................................– 0.3V to 6V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
temperature range, otherwise specifications are at T
SYMBOL
V
I
V
∆V
∆V
I
f
f
I
R
I
2
ELECTRICAL CHARACTERISTICS
FB
S
OSC
SYNC
LIM
SW(LKG)
IN
FB
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
DS(ON)
IN
FB1
LINE REG
LOAD REG
ORDER PART NUMBER
Voltages.................................................– 0.3V to 6V
, V
LTC3407EDD-4
FB2
EXPOSED PAD (PIN 11) IS PGND, MUST BE CONNECTED TO GND
Voltages......................... – 0.3V to V
T
PARAMETER
Operating Voltage Range
Feedback Pin Input Current
Feedback Voltage (Note 3)
Reference Voltage Line Regulation
Output Voltage Load Regulation
Input DC Supply Current (Note 4)
Oscillator Frequency
Synchronization Frequency
Peak Switch Current Limit
Top Switch On-Resistance
Bottom Switch On-Resistance
Switch Leakage Current
RUN1
10-LEAD (3mm × 3mm) PLASTIC DFN
JMAX
V
SW1
GND
FB1
V
W
IN
Active Mode
Sleep Mode
Shutdown
http://www.linear.com/leadfree/
= 125°C, θ
1
2
3
4
5
DD PACKAGE
TOP VIEW
JA
W W
= 45°C/W, θ
11
U
DD PART MARKING
10
JC
9
8
7
6
= 10°C/W
V
RUN2
POR
SW2
MODE/
SYNC
FB2
LCJD
W
U
A
= 25°C. V
IN
IN
CONDITIONS
0°C ≤ T
–40°C ≤ T
V
(Note 3)
V
V
RUN = 0V, V
V
V
(Note 6)
(Note 6)
V
IN
FB1
FB1
FBX
IN
IN
+ 0.3V
+ 0.3V
The
= 2.5V to 5.5V (Note 3)
= 3V, V
= 5V, V
= V
= V
= 0.6V
U
(Note 1)
A
IN
IN
●
FB2
FB2
IN
≤ 85°C
A
denotes the specifications which apply over the full operating
FBX
RUN
= 3.6V, unless otherwise specified. (Note 2)
≤ 85°C
= 0.5V
= 0.63V, MODE/SYNC = 3.6V
IN
= 0.5V, Duty Cycle <35%
= 5.5V, MODE/SYNC = 0V
= 0V, V
Ambient Operating Temperature
Range (Note 2) ....................................... – 40°C to 85°C
Junction Temperature (Note 5) ............................. 125°C
Storage Temperature Range ................. – 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
Reflow Peak Body Temperature ............................ 260°C
ORDER PART NUMBER
LTC3407-4EMSE only ...................................... 300°C
LTC3407EMSE-4
FBX
EXPOSED PAD (PIN 11) IS PGND, MUST BE CONNECTED TO GND
= 0V
T
JMAX
RUN1
V
SW1
GND
FB1
V
IN
= 125°C, θ
10-LEAD PLASTIC MSOP
1
2
3
4
5
MSE PACKAGE
●
●
●
●
TOP VIEW
JA
= 45°C/W, θ
11
0.588
0.585
MIN
0.95
2.5
1.8
MSE PART MARKING
www.DataSheet4U.com
JC
10
9
8
7
6
= 10°C/W
2.25
2.25
0.35
0.30
0.01
TYP
700
V
RUN2
POR
SW2
MODE/
SYNC
0.6
0.6
0.3
0.5
0.1
1.2
40
FB2
LTCJC
0.612
0.612
MAX
0.45
0.45
950
5.5
0.5
2.7
1.6
30
60
1
1
UNITS
34074f
MHz
MHz
%/V
nA
µA
µA
µA
µA
%
Ω
Ω
V
V
V
A