LTC3406-1.2 Linear Technology, LTC3406-1.2 Datasheet - Page 2

• Manufacturer Part Number: LTC3406-1.2
• Description: 1.5MHz / 600mA Synchronous Step-Down Regulator in ThinSOT
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
(Note 1)
LTC3406-1.2
Input Supply Voltage .................................. – 0.3V to 6V
RUN, V
SW Voltage (DC) ......................... – 0.3V to (V
P-Channel Switch Source Current (DC) ............. 800mA
N-Channel Switch Sink Current (DC) ................. 800mA
Peak SW Sink and Source Current (V
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Junction Temperature (Notes 3, 5) ...................... 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
temperature range, otherwise specifications are T
SYMBOL
V
∆V
∆V
I
V
V
I
f
R
R
I
V
I
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3406E-1.2 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.
Note 3: T
dissipation P
ELECTRICAL CHARACTERISTICS
2
PK
S
OSC
LSW
RUN
OUT
LOADREG
IN
RUN
PFET
NFET
OVL
OUT
LTC3406-1.2: T
J
OUT
is calculated from the ambient temperature T
D
PARAMETER
Regulated Output Voltage
Output Overvoltage Lockout
Output Voltage Line Regulation
Peak Inductor Current
Output Voltage Load Regulation
Input Voltage Range
Input DC Bias Current
Oscillator Frequency
R
R
SW Leakage
RUN Threshold
RUN Leakage Current
according to the following formula:
Voltages................................... – 0.3V to V
Active Mode
Sleep Mode
Shutdown
DS(ON)
DS(ON)
J
= T
of P-Channel FET
of N-Channel FET
A
W
+ (P
D
)(250°C/W)
W W
IN
= 3V)........ 1.3A
CONDITIONS
I
∆V
V
V
(Note 4)
V
V
V
V
V
I
I
V
OUT
SW
SW
IN
IN
OUT
OUT
RUN
OUT
OUT
RUN
OVL
A
= 2.5V to 5.5V
= 3V, V
= 100mA
= –100mA
and power
A
= 100mA
U
= 1.08V, I
= 1.236V, I
= 1.2V
= 0V
= 0V, V
= 0V, V
= 25°C. V
= V
IN
OVL
OUT
+ 0.3V)
IN
SW
– V
The
= 1.08V, Duty Cycle < 35%
LOAD
= 5.5V
LOAD
= 0V or 5V, V
IN
OUT
IN
●
= 3.6V unless otherwise specified.
= 0A
= 0A
denotes specifications which apply over the full operating
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
T
IN
JMAX
= 5V
RUN 1
GND 2
= 125°C, θ
SW 3
5-LEAD PLASTIC TSOT-23
S5 PACKAGE
JA
TOP VIEW
= 250°C/ W, θ
●
●
●
●
●
●
JC
5 V
4 V
= 90°C/ W
OUT
IN
1.164
0.75
MIN
2.5
2.5
1.2
0.3
U
www.DataSheet4U.com
±0.01
±0.01
S5 PART MARKING
6.25
0.04
0.35
TYP
300
210
1.2
0.1
1.5
0.4
20
0.5
1
1
LTC3406ES5-1.2
ORDER PART
NUMBER
W
LTBMQ
1.236
MAX
1.25
0.45
400
0.4
5.5
1.8
0.5
1.5
±1
±1
10
35
1
UNITS
340612f
U
MHz
%/V
kHz
µA
µA
µA
µA
µA
%
%
Ω
Ω
V
A
V
V