LTC3458L Linear Technology, LTC3458L Datasheet - Page 2

• Manufacturer Part Number: LTC3458L
• Description: 1.7A/ 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
LTC3458L
(Note 1)
V
BURST, SHDN, V
Operating Temperature Range
Storage Temperature Range ..................–65°C to 125°C
SW Voltage
temperature range, otherwise specifications are at T
PARAMETER
Minimum V
Output Voltage Adjust Range
Feedback Voltage
Undervoltage (Exit Burst Mode Operation)
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
Fixed NMOS Current Limit
Maximum Duty Cycle
Minimum Duty Cycle
Frequency Accuracy
Error Amplifier Transconductance
Error Amplifier Source Current
Error Amplifier Sink Current
SYNC Input High
SYNC Input Low
2
ELECTRICAL CHARACTERISTICS
IN
(Notes 2, 3) .........................................–40°C to 85°C
DC ........................................................... –0.3V to 7V
Pulsed <100ns ........................................ –0.3V to 8V
, SS, SYNC Voltages ................................. –0.3 to 7V
IN
Operating Voltage
OUT
W
Voltages ....................... –0.3 to 7V
W W
U
A
= 25°C. V
CONDITIONS
T
T
0°C to 85°C, V
–40°C to 0°C
Below Feedback Voltage
V
V
V
V
V
V
V
V
R
V
R
A
A
FB
IN
OUT
IN
OUT
IN
OUT
OUT
IN
ILIM
T
= 0°C to 85°C
= –40°C to 0°C
= 200k
The
Current at 3.3V
Current at 3.3V
Current Switching
= 3.3V, f
= 1.23V
Current at 5V
Current at 0V
= 5V
= 5V
= 84.5k
●
IN
denotes the specifications which apply over the full operating
= 3.3V, V
OSC
OUT
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
= 1MHz
= 3.3V
SHDN
SYNC
12-LEAD (4mm × 3mm) PLASTIC DFN
I
SW
LIM
EXPOSED PAD IS PGND (PIN 13),
V
OUT
R
IN
MUST BE SOLDERED TO PCB
T
T
JMAX
1
2
3
4
5
6
= 5V, R
= 125°C, θ
DE PACKAGE
TOP VIEW
13
T
= 200k, unless otherwise noted.
JA
= 45°C/W
12
11
10
9
8
7
V
BURST
SS
GND
COMP
FB
OUT
●
●
●
●
●
●
●
●
●
1.21
1.20
0.85
MIN
1.7
1.5
80
2
U
www.DataSheet4U.com
DE PART MARKING
1.225
LTC3458LEDE
0.05
0.05
TYP
ORDER PART
1.4
1.4
0.5
0.2
0.3
2.1
–4
12
90
60
1
5
1
1
1
7
7
NUMBER
3458L
W
MAX
1.25
1.25
1.15
0.35
1.5
1.7
50
30
10
6
1
3
3
5
5
0
UNITS
U
µA/V
3458lf
MHz
mA
nA
µA
µA
µA
µA
µA
µA
µA
µA
%
%
%
Ω
Ω
V
V
V
V
V
A
V
V