LTC3549EDCB#TRPBF Linear Technology, LTC3549EDCB#TRPBF Datasheet - Page 2

• Manufacturer Part Number: LTC3549EDCB#TRPBF
• Description: IC REG BUCK 250MA 6-DFN
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3549EDCB#TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.61 ~ 5.5 V
• Current - Output: 250mA
• Frequency - Switching: 2.25MHz
• Voltage - Input: 1.6 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 6-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

ABSOLUTE AXI U RATI GS
LTC3549
(Note 1)
Input Supply Voltage ................................... –0.3V to 6V
RUN, V
SW Voltage < 100ns Pulse .............–0.3V to (V
Operating Temperature Range (Note 2) ... –40°C to 85°C
Junction Temperature (Note 3) ........................... 125°C
Storage Temperature Range .................. –65°C to 125°C
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
V
V
I
V
I
V
I
ΔV
ΔV
ΔV
I
V
2
RUN
MODE
VFB
PK
IN
RUN
MODE
FB
LOADREG
OVL
FB
OUT
FB
, MODE Voltages .............–0.3V to (V
PARAMETER
Input Voltage Range
RUN Threshold
RUN Leakage Current
MODE Threshold
MODE Leakage Current
Regulated Feedback Voltage
Feedback Current
ΔV
Reference Voltage Line Regulation
Output Voltage Line Regulation
Peak Inductor Current
Output Voltage Load Regulation
W
FBOVL
Overvoltage Lockout
W W
U
A
IN
IN
= 25°C, V
CONDITIONS
V
V
T
0°C ≤ T
–40°C ≤ T
ΔV
1.6V < V
I
V
Pulse Skip Mode, V
50mA < I
+ 0.3V)
+ 0.3V)
OUT
A
RUN
MODE
FB
= 25°C (Note 4)
OVL
The
= 0.5V or V
= 100mA, 1.6V < V
= 0 or 2.2V
= ΔV
= 0 or 2.2V
A
●
IN
IN
≤ 85°C (Note 4)
LOAD
A
denotes the specifi cations which apply over the full operating
< 5.5V (Note 4)
= 2.2V.
≤ 85°C (Note 4)
FBOVL
< 250mA (Note 7)
OUT
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specifi ed 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:
– V
ORDER PART NUMBER
= 90%
OUT
FB
= 1.2V,
IN
(Note 6)
LTC3549EDCB
< 5.5V (Note 7)
6-LEAD (2mm × 3mm) PLASTIC DFN
http://www.linear.com/leadfree/
EXPOSED PAD (PIN 7) IS GND
T
MUST BE SOLDERED TO PCB
JMAX
●
●
●
●
●
●
= 125°C, θ
DCB PACKAGE
6
1
TOP VIEW
0.599
0.597
0.596
MIN
1.6
0.3
0.3
0.3
5
7
2
40
JA
= 64°C/W
4
3
U
DCB PART MARKING
0.611
0.611
0.611
0.01
0.65
0.01
0.04
0.04
0.45
TYP
0.7
0.5
60
LBZR
W
0.623
0.623
0.626
MAX
±30
5.5
1.1
1.1
0.4
0.4
0.6
80
1
1
UNITS
U
3549f
%/V
%/V
mV
µA
µA
nA
%
V
V
V
V
V
V
A