LTC3443 Linear Technology, LTC3443 Datasheet - Page 2

• Manufacturer Part Number: LTC3443
• Description: High Current Micropower 600kHz Synchronous Buck-Boost DC/DC Converter
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
ELECTRICAL CHARACTERISTICS
LTC3443
(Note 1)
V
SW1, SW2 Voltage
SHDN/SS, MODE/SYNC Voltage ................. – 0.3V to 6V
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Maximum Junction Temperature (Note 4) ........... 125°C
Storage Temperature Range ................ – 65°C to 125°C
PARAMETER
Input Start-Up Voltage
Output Voltage Adjust Range
Feedback Voltage
Feedback Input Current
Quiescent Current—Burst Mode Operation
Quiescent Current—SHDN
Quiescent Current—Active
NMOS Switch Leakage
PMOS Switch Leakage
NMOS Switch On Resistance
PMOS Switch On Resistance
Input Current Limit
Max Duty Cycle
Min Duty Cycle
Frequency Accuracy
MODE/SYNC Threshold
MODE/SYNC Input Current
Error Amp AV
Error Amp Source Current
Error Amp Sink Current
SHDN/SS Threshold
SHDN/SS Threshold
SHDN/SS Input Current
temperature range, otherwise specifications are at T
2
IN
DC ...........................................................– 0.3V to 6V
Pulsed < 100ns ...................................... – 0.3V to 7V
, V
OUT
Voltage........................................ – 0.3V to 6V
OL
W
W W
CONDITIONS
V
V
V
MODE/SYNC = 0V (Note 3)
Switches B and C
Switches A and D
Switches B and C
Switches A and D
Boost (% Switch C On)
Buck (% Switch A In)
V
When IC is Enabled
When EA is at Max Boost Duty Cycle
V
FB
C
OUT
MODE/SYNC
SHDN
= 0V, MODE/SYNC = 3V (Note 3)
= 1.22V
= SHDN = 0V, Not Including Switch Leakage
= 5.5V
U
= 5.5V
A
= 25°C. V
The
●
IN
denotes the specifications which apply over the full operating
= V
PACKAGE/ORDER I FOR ATIO
OUT
Consult LTC Marketing for parts specified with wider operating temperature ranges.
SHDN/SS
= 3.6V,unless otherwise noted.
PGND
PGND
12-LEAD (4mm × 3mm) PLASTIC DFN
SW1
SW2
GND
EXPOSED PAD IS PGND (PIN 13)
θ
θ
MUST BE SOLDERED TO PCB
JA
JA
= 53°C/W 1-LAYER BOARD
= 43°C/W 4-LAYER BOARD
1
2
3
4
5
6
DE12 PACKAGE
T
θ
JMAX
JC
TOP VIEW
= 4.3°C/W
13
= 125°C
12
11
10
9
8
7
●
●
●
●
●
●
●
●
●
●
FB
V
V
PV
V
MODE/SYNC
C
IN
OUT
IN
MIN
1.19
100
510
2.4
0.4
0.4
70
2
U
www.DataSheet4U.com
1.22
0.10
0.11
0.01
0.01
TYP
520
600
300
2.3
0.1
0.1
0.1
3.2
DE PART MARKING
28
88
90
14
1
1
2
ORDER PART
LTC3443EDE
W
NUMBER
MAX
3443
5.25
1.25
900
690
2.4
1.4
1.4
2.4
50
45
10
1
7
0
1
1
sn3443 3443fs
UNITS
U
kHz
nA
µA
µA
µA
µA
µA
µA
dB
µA
µA
µA
%
%
%
Ω
Ω
V
V
V
A
V
V
V