LTC3407-3 Linear Technology, LTC3407-3 Datasheet - Page 2

• Manufacturer Part Number: LTC3407-3
• Description: Dual Synchronous 1.8V/0.8A and 3.3V/0.8A 2.25MHz Step-Down DC/DC Regulator
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
temperature range, otherwise specifications are at T
LTC3407-3
(Note 1)
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
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
ELECTRICAL CHARACTERISTICS
SYMBOL
V
V
V
∆V
∆V
I
f
f
I
R
I
POR
V
I
V
2
S
OSC
SYNC
LIM
SW(LKG)
RUN
IN
OUT1
OUT2
RUN
MODE
DS(ON)
IN
OUT1
LINE REG
LOAD REG
Voltages.................................................– 0.3V to 6V
, V
OUT2
PARAMETER
Operating Voltage Range
Output Voltage (Note 3)
Output Voltage (Note 3)
Reference Voltage Line Regulation (Note 3) V
Output Voltage Load Regulation (Note 3)
Input DC Supply Current (Note 4)
Oscillator Frequency
Synchronization Frequency
Peak Switch Current Limit, Channel 1 +
Channel 2
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
Voltages .................... – 0.3V to V
Active Mode
Sleep Mode
Shutdown
W
W W
U
A
CONDITIONS
0°C ≤ T
–40°C ≤ T
0°C ≤ T
–40°C ≤ T
V
V
V
RUN = 0V, V
V
V
Duty Cycle <35%
(Note 6)
(Note 6)
V
V
= 25°C. V
IN
IN
OUT1
OUT1
OUT1
IN
IN
OUT
IN
IN
= 3.3V to 5.5V (Channel 1)
= 3.6V to 5.5V (Channel 2)
= 3V, V
= 5V, V
+ 0.3V
+ 0.3V
Ramping Down, MODE/SYNC = 0V
The
= 1.5V, V
= 1.9V, V
= 1.8V, V
A
A
≤ 85°C
≤ 85°C
A
A
OUT1
RUN
●
IN
IN
≤ 85°C
≤ 85°C
IN
IN
denotes the specifications which apply over the full operating
= 3.6V, unless otherwise specified. (Note 2)
= 5.5V, MODE/SYNC = 0V
= 0V, V
OUT2
OUT2
OUT2
= 1.5V, V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
= 2.8V
= 3.5V, MODE/SYNC = 3.6V
= 3.3V
ORDER PART NUMBER
OUT1
OUT2
LTC3407EDD-3
= V
EXPOSED PAD (PIN 11) IS PGND, MUST BE SOLDERED TO PCB GND
= 2.8V,
OUT2
= 0V
T
V
RUN1
JMAX
OUT1
SW1
10-LEAD (3mm × 3mm) PLASTIC DFN
GND
V
IN
= 125°C, θ
http://www.linear.com/leadfree/
1
2
3
4
5
●
●
●
●
●
●
DD PACKAGE
TOP VIEW
JA
V
= 40°C/W, θ
11
1.764
1.755
3.234
3.218
IN
0.95
MIN
3.3
1.8
0.3
0
– 0.5
U
DD PART MARKING
www.DataSheet4U.com
JC
10
9
8
7
6
262,144
= 10°C/W
2.25
2.25
0.35
0.30
0.01
–8.5
0.01
TYP
700
100
1.8
1.8
3.3
3.3
0.3
0.5
0.1
1.2
V
RUN2
POR
SW2
MODE/
SYNC
40
1
OUT2
LCJB
W
1.836
1.836
3.366
3.366
MAX
0.45
0.45
950
200
5.5
0.5
2.7
1.6
1.5
0.5
V
60
1
1
1
IN
UNITS
Cycles
34073fa
U
MHz
MHz
%/V
µA
µA
µA
µA
µA
%
%
Ω
Ω
Ω
V
V
V
V
V
A
V
V
V