1.5a, 3mhz Synchronous Step-up Dc/dc Converter With Output Disconnect

Linear Technology Corporation

find LTC3422 datasheet
LTC3422 pinout,LTC3422 pin diagram
LTC3422
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
SW
V
IN
BURST
SS
SHDN
1
2
3
4
5
11
10 V
OUT
9 SYNC
8 R
T
7 V
C
6 FB
V
IN
, V
OUT
, SYNC Voltages ........................... – 0.3V to 6V
FB, SS, BURST, SHDN Voltages ................ – 0.3V to 6V
SW Voltage
DC .......................................................... – 0.3V to 6V
Pulsed < 100ns ...................................... – 0.3V to 7V
Operating Temperature Range
(Notes 2, 5) ............................................. –40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
DD PACKAGE
10-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER
DD PART MARKING
LBRN
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 1.2V, V
OUT
= 3.3V, R
T
= 28k, unless otherwise noted. (Note 2)
PARAMETER
Minimum V
IN
Start-Up Voltage
Minimum V
IN
Operating Voltage
Output Voltage Adjust Range
ELECTRICAL CHARACTERISTICS
CONDITIONS
I
LOAD
< 1mA
(Note 3)
MIN
TYP
0.88
MAX
1
0.5
5.25
5.25
UNITS
V
V
V
V
V
nA
µA
µA
mA
µA
µA
A
A
A
mA
%
2.25
2.40
1.192
1.216
1
25
0.1
0.75
0.1
0.1
0.20
0.24
Feedback Voltage
Feedback Input Current
Quiescent Current—Burst Mode Operation
Quiescent Current—Shutdown
Quiescent Current—Active
NMOS Switch Leakage
PMOS Switch Leakage
NMOS Switch On Resistance
PMOS Switch On Resistance
NMOS Current Limit—Steady State
NMOS Current Limit—Pulsed
NMOS Current Limit—Short Circuit
NMOS Burst Current Limit
Maximum Duty Cycle
Minimum Duty Cycle
Frequency
SYNC Input High
SYNC Input Low
SYNC Input Current
V
OUT
= 2V
V
OUT
= 3.3V
V
OUT
= 3.3V
V
FB
= 1.216V
V
C
= 0V (Note 4)
SHDN = 0V, V
OUT
= 0V
V
C
= 0V (Note 4)
1.240
50
42
1
1.1
5
10
Duty Cycle Not to Exceed 5%
V
OUT
= 500mV, V
IN
1.5
2
2.5
0.75
600
91
1.5
84
0.85
2.2
0
1
1.15
0.8
0.01
1
3422fa
2
U
%
MHz
V
V
µA
W
U
U
W W
W