參數(shù)資料
型號: LTC3560ES6#TR
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 2.1 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6
封裝: 1 MM HEIGHT, PLASTIC, MO-193, TSOT-23
文件頁數(shù): 1/16頁
文件大?。?/td> 323K
代理商: LTC3560ES6#TR
1
LTC3560
3560f
High Efficiency: Up to 95%
Low Output Ripple (<20mVP-P): Burst Mode
Operation: IQ = 16A
2.5V to 5.5V Input Voltage Range
2.25MHz Constant Frequency Operation
Synchronizable to External Clock
No Schottky Diode Required
Stable with Ceramic Capacitors
Low Dropout Operation: 100% Duty Cycle
0.6V Reference Allows Low Output Voltages
Shutdown Mode Draws < 1
A Supply Current
±2% Output Voltage Accuracy
Current Mode Operation for Excellent Line and
Load Transient Response
Overtemperature Protected
Low Profile (1mm) ThinSOT
TM Package
The LTC
3560 is a high efficiency monolithic synchro-
nous buck regulator using a constant frequency, current
mode architecture. Supply current during operation is
only 16
A, dropping to <1A in shutdown. The 2.5V to
5.5V input voltage range makes the LTC3560 ideally suited
for single Li-Ion/Li-Polymer battery-powered applications.
100% duty cycle provides low dropout operation, extend-
ing battery life in portable systems.
Switching frequency is internally set at 2.25MHz, allowing
the use of small surface mount inductors and capacitors.
For noise sensitive applications the LTC3560 can be
externally synchronized from 1MHz to 3MHz. Burst Mode
operation is inhibited during synchronization or when the
SYNC/MODE pin is pulled high, preventing low frequency
ripple from interfering with audio circuitry.
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 LTC3560 is available in a low
profile (1mm) ThinSOT package.
Cellular Telephones
Wireless and DSL Modems
Digital Still Cameras
Media Players
Portable Instruments
Figure 1a. High Efficiency Step-Down Converter
2.25MHz, 800mA
Synchronous Step-Down
Regulator in ThinSOT
Figure 1b. Efficiency vs Load Current
VIN
CIN
10
F
CER
VIN
2.7V
TO 5.5V
LTC3560
RUN
SYNC/MODE
2.2
H
10pF
806k
255k
3405A F01a
SW
VFB
GND
COUT
10
F
CER
VOUT
2.5V
APPLICATIO S
U
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
, LTC, LT and Burst Mode are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 6580258, 5481178, 5994885,
6304066, 6498466, 6611131
LOAD CURRENT (mA)
30
EFFICIENCY
(%)
POWER
LOSS
(W)
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3560 F01b
0
1
0.001
0.1
0.01
0.0001
1
VIN = 3.6V
VIN = 4.2V
VIN = 5.5V
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