OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC3406ES5-1.5#TRMPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LTC34 06
LTC34 0 6 -1.5/LTC34 0 6 -1.8
3406fa
■
High Efficiency: Up to 96%
■
Very Low Quiescent Current: Only 20
µ
A
During Operation
■
600mA Output Current
■
2.5V to 5.5V Input Voltage Range
■
1.5MHz Constant Frequency Operation
■
No Schottky Diode Required
■
Low Dropout Operation: 100% Duty Cycle
■
0.6V Reference Allows Low Output Voltages
■
Shutdown Mode Draws ≤1µA Supply Current
■
Current Mode Operation for Excellent Line and
Load Transient Response
■
Overtemperature Protected
■
Low Profile (1mm) ThinSOT
TM
Package
The LTC
®
3406 is a high efficiency monolithic synchro-
nous buck regulator using a constant frequency, current
mode architecture. The device is available in an adjustable
version and fixed output voltages of 1.5V and 1.8V. Supply
current during operation is only 20µA and drops to ≤1µA
in shutdown. The 2.5V to 5.5V input voltage range makes
the LTC3406 ideally suited for single Li-Ion battery-pow-
ered applications. 100% duty cycle provides low dropout
operation, extending battery life in portable systems.
Automatic Burst Mode
®
operation increases efficiency at
light loads, further extending battery life.
Switching frequency is internally set at 1.5MHz, allowing
the use of small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency and
eliminates the need for an external Schottky diode. Low
output voltages are easily supported with the 0.6V feed-
back reference voltage. The LTC3406 is available in a low
profile (1mm) ThinSOT package.
■
Cellular Telephones
■
Personal Information Appliances
■
Wireless and DSL Modems
■
Digital Still Cameras
■
MP3 Players
■
Portable Instruments
Figure 1a. High Efficiency Step-Down Converter
1.5MHz, 600mA
Synchronous Step-Down
Regulator in ThinSOT
Figure 1b. Efficiency vs Load Current
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a registered trademark of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
Protected by U.S. Patents, including 6580258, 5481178.
V
IN
C
IN
**
4.7µF
CER
V
IN
2.7V
TO 5.5V
*
**
†
LTC3406-1.8
RUN
3
2.2µH*
3406 F01a
MURATA LQH32CN2R2M33
TAIYO YUDEN JMK212BJ475MG
TAIYO YUDEN JMK316BJ106ML
5
4
1
2
SW
V
OUT
GND
C
OUT
†
10µF
CER
V
OUT
1.8V
600mA
OUTPUT CURRENT (mA)
70
EFFICIENCY (%)
80
90
95
0.1 10 100 1000
3406 F01b
60
1
85
75
65
V
IN
= 2.7V
V
OUT
= 1.8V
V
IN
= 4.2V
V
IN
= 3.6V
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LTC34 06
LTC34 06 -1.5/LTC34 06 -1.8
3406fa
LTC3406ES5
T
JMAX
= 125°C, θ
JA
= 250°C/ W, θ
JC
= 90°C/ W
ORDER PART
NUMBER
Input Supply Voltage .................................. – 0.3V to 6V
RUN, V
FB
Voltages ..................................... –0.3V to V
IN
SW Voltage .................................. –0.3V to (V
IN
+ 0.3V)
P-Channel Switch Source Current (DC) ............. 800mA
N-Channel Switch Sink Current (DC) ................. 800mA
S5 PART MARKING
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTA5
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
RUN 1
GND 2
SW 3
5 V
FB
4 V
IN
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
(Note 1)
Peak SW Sink and Source Current ........................ 1.3A
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
LTC3406ES5-1.5
LTC3406ES5-1.8
ORDER PART
NUMBER
S5 PART MARKING
LTD6
LTC4
T
JMAX
= 125°C, θ
JA
= 250°C/ W, θ
JC
= 90°C/ W
RUN 1
GND 2
SW 3
5 V
OUT
4 V
IN
TOP VIEW
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
VFB
Feedback Current ● ±30 nA
V
FB
Regulated Feedback Voltage LTC3406 (Note 4) T
A
= 25°C 0.5880 0.6 0.6120 V
LTC3406 (Note 4) 0°C T
A
≤ 85°C 0.5865 0.6 0.6135 V
LTC3406 (Note 4) –40°C ≤ T
A
≤ 85°C ● 0.5850 0.6 0.6150 V
∆V
FB
Reference Voltage Line Regulation V
IN
= 2.5V to 5.5V (Note 4) ● 0.04 0.4 %/V
V
OUT
Regulated Output Voltage LTC3406-1.5, I
OUT
= 100mA ● 1.455 1.500 1.545 V
LTC3406-1.8, I
OUT
= 100mA ● 1.746 1.800 1.854 V
∆V
OUT
Output Voltage Line Regulation V
IN
= 2.5V to 5.5V ● 0.04 0.4 %/V
I
PK
Peak Inductor Current V
IN
= 3V, V
FB
= 0.5V or V
OUT
= 90%, 0.75 1 1.25 A
Duty Cycle < 35%
V
LOADREG
Output Voltage Load Regulation 0.5 %
V
IN
Input Voltage Range ● 2.5 5.5 V
I
S
Input DC Bias Current (Note 5)
Active Mode V
FB
= 0.5V or V
OUT
= 90%, I
LOAD
= 0A 300 400 µA
Sleep Mode V
FB
= 0.62V or V
OUT
= 103%, I
LOAD
= 0A 20 35 µA
Shutdown V
RUN
= 0V, V
IN
= 4.2V 0.1 1 µA
f
OSC
Oscillator Frequency V
FB
= 0.6V or V
OUT
= 100% ● 1.2 1.5 1.8 MHz
V
FB
= 0V or V
OUT
= 0V 210 kHz
R
PFET
R
DS(ON)
of P-Channel FET I
SW
= 100mA 0.4 0.5 Ω
R
NFET
R
DS(ON)
of N-Channel FET I
SW
= –100mA 0.35 0.45 Ω
I
LSW
SW Leakage V
RUN
= 0V, V
SW
= 0V or 5V, V
IN
= 5V ±0.01 ±1 µA
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
IN
= 3.6V unless otherwise specified.
ELECTRICAL CHARACTERISTICS
3
LTC34 06
LTC34 0 6 -1.5/LTC34 0 6 -1.8
3406fa
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
RUN
RUN Threshold ● 0.3 1 1.5 V
I
RUN
RUN Leakage Current ● ±0.01 ±1 µA
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
IN
= 3.6V unless otherwise specified.
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3406E 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
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
LTC3406: T
J
= T
A
+ (P
D
)(250°C/W)
Note 4: The LTC3406 is tested in a proprietary test mode that connects
V
FB
to the output of the error amplifier.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Efficiency vs Input Voltage
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
Reference Voltage vs
Temperature
Oscillator Frequency vs
Temperature
(From Figure1a Except for the Resistive Divider Resistor Values)
INPUT VOLTAGE (V)
2
50
EFFICIENCY (%)
55
65
70
75
100
85
3
4
3406 G01
60
90
95
80
5
6
I
OUT
= 600mA
V
OUT
= 1.8V
I
OUT
= 100mA
I
OUT
= 10mA
I
OUT
= 0.1mA
I
OUT
= 1mA
OUTPUT CURRENT (mA)
70
EFFICIENCY (%)
80
90
95
0.1 10 100 1000
3406 G02
60
1
85
75
65
V
OUT
= 1.2V
V
IN
= 2.7V
V
IN
= 4.2V
V
IN
= 3.6V
OUTPUT CURRENT (mA)
70
EFFICIENCY (%)
80
90
95
0.1 10 100 1000
3406 G03
60
1
85
75
65
V
OUT
= 1.5V
V
IN
= 2.7V
V
IN
= 4.2V
V
IN
= 3.6V
OUTPUT CURRENT (mA)
70
EFFICIENCY (%)
80
85
95
100
0.1 10 100 1000
3406 G04
60
1
90
75
65
V
OUT
= 2.5V
V
IN
= 2.7V
V
IN
= 4.2V
V
IN
= 3.6V
TEMPERATURE (°C)
–50
REFERENCE VOLTAGE (V)
0.614
0.609
0.604
0.599
0.594
0.589
0.584
25 75
–25 0
50 100 125
V
IN
= 3.6V
3406 G05
TEMPERATURE (°C)
–50
FREQUENCY (MHz)
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
25 75
–25 0
50 100 125
V
IN
= 3.6V
3406 G06
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LTC3406ES5-1.5#TRMPBF

Mfr. #:
Buy LTC3406ES5-1.5#TRMPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 600mA, 1.5MHz Sync Step-dwn in ThinSOT
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet