ltc3405a-1.375 Linear Technology Corporation, ltc3405a-1.375 Datasheet - Page 2

• Manufacturer Part Number: ltc3405a-1.375
• Description: 1.375v, 1.5mhz, 300ma Synchronous Step-down Regulators In Thinsot
• Manufacturer: Linear Technology Corporation

ABSOLUTE AXI U RATI GS
LTC3405A-1.375
(Note 1)
Input Supply Voltage .................................. – 0.3V to 6V
MODE, RUN, V
SW Voltage .................................. – 0.3V to (V
P-Channel Switch Source Current (DC) ............. 400mA
N-Channel Switch Sink Current (DC) ................. 400mA
Peak SW Sink and Source Current .................... 630mA
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Junction Temperature (Note 3) ............................ 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
The
V
SYMBOL
I
V
∆V
∆V
V
V
I
f
R
R
I
V
I
V
I
Burst Mode is a registered trademark of Linear Technology Corporation.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3405A-1.375 is guaranteed to meet performance
specifications from 0°C to 70°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
ELECTRICAL CHARACTERISTICS
2
PK
S
OSC
LSW
RUN
MODE
OUT
LOADREG
IN
RUN
MODE
IN
PFET
NFET
OVL
OUT
= 3.6V unless otherwise specified.
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
PARAMETER
Peak Inductor Current
Regulated Output Voltage
∆Output Overvoltage Lockout
Output Voltage Line Regulation
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Oscillator Frequency
R
R
SW Leakage
RUN Threshold
RUN Leakage Current
MODE Threshold
MODE Leakage Current
DS(ON)
DS(ON)
Pulse Skipping Mode
Burst Mode
Shutdown
OUT
of P-Channel FET
of N-Channel FET
W
Voltages....................... – 0.3V to V
®
Operation
W W
CONDITIONS
V
MODE = 3.6V
∆V
V
(Note 4)
V
V
V
V
V
I
I
V
SW
SW
IN
IN
OUT
OUT
RUN
OUT
OUT
RUN
OVL
= 3V, V
= 2.5V to 5.5V
= 100mA
= –100mA
U
= 1.238V, MODE = 3.6V, I
= 1.42V, MODE = 0V, I
= 1.375V
= 0V
= 0V, V
= 0V, V
= V
IN
OVL
OUT
+ 0.3V)
IN
SW
– V
= 1.238V, Duty Cycle < 35%
= 4.2V
= 0V or 5V, V
OUT
IN
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Note 3: T
dissipation P
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
LOAD
IN
LTC3405A-1.375: T
LOAD
= 5V
= 0A
RUN 1
GND 2
SW 3
J
T
= 0A
JMAX
6-LEAD PLASTIC TSOT-23
is calculated from the ambient temperature T
D
= 125°C, θ
according to the following formula:
S6 PACKAGE
TOP VIEW
JA
J
= T
= 250°C/ W
●
●
●
●
●
●
●
●
A
+ (P
6 MODE
5 V
4 V
OUT
IN
D
1.334
)(250°C/W)
MIN
375
2.5
1.2
0.3
0.3
2
U
LTC3405AES6-1.375
±0.01
±0.01
±0.01
1.375
S6 PART MARKING
0.04
TYP
500
300
170
5.6
0.1
1.5
0.7
0.6
1.5
20
0.5
1
ORDER PART
A
NUMBER
W
= 25°C.
LTBRP
A
1.416
MAX
0.85
0.90
625
400
9.3
0.4
5.5
1.8
1.5
±1
±1
±1
35
and power
1
2
3405a1375f
UNITS
U
MHz
%/V
kHz
mA
µA
µA
µA
µA
µA
µA
%
%
Ω
Ω
V
V
V
V