LTC3407EDD-2 Linear Technology, LTC3407EDD-2 Datasheet - Page 3

• Manufacturer Part Number: LTC3407EDD-2
• Description: IC REG DC/DC DUAL STEPDOWN 10DFN
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3407EDD-2

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.6 ~ 5 V
• Current - Output: 1A
• Frequency - Switching: 1.5MHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-DFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

100mV/DIV
200mA/DIV
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
V
ΔV
ΔV
I
f
f
I
R
I
POR
V
I
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3407E-2 is guaranteed to meet specifi ed performance
from 0°C to 70°C. Specifi cations over the – 40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC3407I-2 is guaranteed over the
full –40°C to 125°C operating temperature range.
TYPICAL PERFORMANCE CHARACTERISTICS
S
OSC
SYNC
LIM
SW(LKG)
RUN
FB
RUN
MODE
DS(ON)
LINE REG
LOAD REG
5V/DIV
V
OUT
SW
I
L
V
V
I
CIRCUIT OF FIGURE 1
Burst Mode Operation
LOAD
IN
OUT
= 3.6V
= 1.8V
= 100mA
PARAMETER
Feedback Voltage (Note 3)
Reference Voltage Line Regulation
Output Voltage Load Regulation
Input DC Supply Current
Oscillator Frequency
Synchronization Frequency
Peak Switch Current Limit
Top Switch On-Resistance
Bottom Switch On-Resistance
Switch Leakage Current
Power-On Reset Threshold
Power-On Reset On-Resistance
Power-On Reset Delay
RUN Threshold
RUN Leakage Current
Mode Threshold Low
Mode Threshold High
Active Mode
Sleep Mode
Shutdown
2μs/DIV
34072 G01
200mA/DIV
10mV/DIV
5V/DIV
V
OUT
SW
I
L
A
CONDITIONS
V
V
I
CIRCUIT OF FIGURE 1
0°C ≤ T
–40°C ≤ T
–40°C ≤ T
V
(Note 3)
(Note 4)
V
V
RUN = 0V, V
V
V
(Note 6)
(Note 6)
V
V
V
Pulse-Skipping Mode
LOAD
= 25°C. V
IN
OUT
IN
FB1
FB1
FBX
IN
IN
FBX
FBX
= 3.6V
= 2.5V to 5.5V (Note 3)
= 3V, V
= 5V, V
= 1.8V
= 20mA
= V
= V
= 0.6V
Ramping Up, MODE/SYNC = 0V
Ramping Down, MODE/SYNC = 0V
The
A
FB2
FB2
≤ 85°C
A
A
FBX
RUN
●
IN
≤ 85°C
≤ 125°C (Note 2)
= 0.5V
= 0.63V, MODE/SYNC = 3.6V
IN
denotes the specifi cations which apply over the full operating
= 3.6V, unless otherwise specifi ed. (Note 2)
= 5.5V, MODE/SYNC = 0V
= 0.5V, Duty Cycle <35%
= 0V, V
1μs/DIV
Note 3: The LTC3407-2 is tested in a proprietary test mode that connects
V
Note 4: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 5: T
according to the following formula: T
Note 6: The DFN switch on-resistance is guaranteed by correlation to
wafer level measurements.
FB
FBX
to the output of the error amplifi er.
= 0V
J
is calculated from the ambient T
34072 G02
T
A
= 25°C unless otherwise specifi ed.
500mA/DIV
500mA/DIV
200mV/DIV
●
●
●
●
●
I
V
LOAD
OUT
I
V
L
IN
0.588
0.585
0.585
0.95
V
V
I
CIRCUIT OF FIGURE 1
MIN
Load Step
1.8
0.3
LOAD
IN
OUT
0
– 0.5
J
= 3.6V
= T
= 1.8V
= 80mA TO 800mA
A
A
+ (P
262,144
and power dissipation P
2.25
2.25
0.35
0.30
0.01
–8.5
0.01
TYP
700
100
0.6
0.6
0.6
0.3
0.5
0.1
1.2
8.5
LTC3407-2
40
D
1
• θ
20μs/DIV
JA
).
0.612
0.612
0.612
MAX
0.45
0.45
950
200
0.5
2.7
1.6
1.5
0.5
V
60
1
1
1
IN
UNITS
Cycles
D
34072fc
3407 G03
3
MHz
MHz
%/V
μA
μA
μA
μA
μA
%
%
%
Ω
Ω
Ω
V
V
V
A
V
V
V