LTC3600 LINER [Linear Technology], LTC3600 Datasheet
LTC3600
Manufacturer Part Number
LTC3600
Description
15V, 1.5A Synchronous Rail-to-Rail Single Resistor
Manufacturer
LINER [Linear Technology]
Datasheet
1.LTC3600.pdf
(28 pages)
Available stocks
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Quantity
Price
Company:
Part Number:
LTC3600EDD
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC3600EDD
Manufacturer:
LINEAR/凌特
Quantity:
20 000
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Part Number:
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Manufacturer:
LT
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LTC3600EDD-2
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LT
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Part Number:
LTC3600EMS-2
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LT
Quantity:
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Part Number:
LTC3600EMSE
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC3600IDD
Manufacturer:
LINEAR/凌特
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20 000
Part Number:
LTC3600IDD#PBF
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LINEAR/凌特
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20 000
Part Number:
LTC3600IMSE
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
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APPLICATIONS
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TYPICAL APPLICATION
12V
V
IN
Single Resistor Programmable V
±1% I
Tight V
Easy to Parallel for Higher Current and Heat Spreading
Wide V
High Efficiency: Up to 96%
1.5A Output Current
Adjustable Frequency: 200kHz to 4MHz
4V to 15V V
Current Mode Operation for Excellent Line and Load
Transient Response
<1μA Supply Current in Shutdown
Available in Thermally Enhanced 12-Pin
(3mm × 3mm) DFN and MSOP Packages
Voltage Tracking Supplies
Point-of-Load Power Supplies
Portable Instruments
Distributed Power Systems
10μF
SET
OUT
OUT
8
5
0.1μF
RUN
V
IN
Accuracy
Regulation Independent of V
Range 0V to V
IN
High Efficiency, 1MHz, 1.5A Step-Down Converter
1
ISET
49.9k
Range
50μA
MODE/
SYNC
+
–
6
ERROR
AMP
INTV
10
CC
IN
1μF
LTC3600
RT
– 0.5V
3
PWM CONTROL
AND SWITCH
13
DRIVER
OUT
GND
BOOST
PGFB
9
4
OUT
ITH PGOOD
2
Voltage
12
V
OUT
SW
3600 TA01a
11
7
0.1μF
2.2μH
DESCRIPTION
The LTC3600 is a high efficiency, monolithic synchronous
buck regulator whose output is programmed with just one
external resistor. The accurate internally generated 50μA
current source on the ISET pin allows the use of a single
external resistor to program an output voltage that ranges
from 0V to 0.5V below V
back to the error amplifier in unity gain fashion and equals
the ISET voltage. The operating supply voltage range is 4V
to 15V, making it suitable for dual lithium-ion battery and
5V or 12V input point-of-load power supply applications.
The operating frequency is synchronizable to an external
clock or programmable from 200kHz to 4MHz with an
external resistor. High switching frequency allows the use
of small surface mount inductors. The unique constant
on-time architecture is ideal for operating at high frequency
in high step-down ratio applications that also demand fast
load transient response.
L, LT, LTC, LTM, Linear Technology, the Linear logo and OPTI-LOOP are registered trademarks
and Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents, including 5481178, 5705919,
5847554, 6580258.
Rail-to-Rail Single Resistor
22μF
15V, 1.5A Synchronous
V
2.5V
OUT
Step-Down Regulator
100
90
80
70
60
50
40
30
20
10
0
0.001
IN
Efficiency and Power Loss vs
V
V
IN
OUT
. The V
= 12V
= 2.5V
DCM
0.01
Output Current
CCM
LOAD CURRENT (A)
OUT
CCM
voltage feeds directly
0.1
LTC3600
DCM
1
POWER
LOSS
3600 TA01b
10
0.9
0.8
0.7
0.6
0.4
0.3
0.2
0.1
0
1.0
0.5
3600fb
1
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