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

LTC3610IWP#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LTC3610
1
3610ff
0.47µH
4.7µF
10µF
×3
V
IN
4V TO 24V
V
OUT
2.5V
12A
3610 TA01a
604k
0.1µF
I
ON
V
IN
SW
BOOST
RUN/SS
I
TH
V
ON
SGND INTV
CC
FCB
PGND
V
FB
V
RNG
0.22µF
100µF
×2
31.83k
LTC3610
470pF
EXTV
CC
PGOOD
30.1k
9.5k
100pF
LOAD CURRENT (A)
0.01
EFFICIENCY (%)
POWER LOSS (mW)
80
90
3610 TA01b
70
50
60
85
95
75
55
65
0.1 1 10
100
1000
100
1
10
10000
V
OUT
= 2.5V
POWER LOSS 12V
POWER LOSS 5V
V
IN
= 12V
V
IN
= 5V
Features
applications
Description
24V, 12A Monolithic
Synchronous Step-Down
DC/DC Converter
The LTC
®
3610 is a high efficiency, monolithic synchronous
step-down DC/DC converter that can deliver up to 12A
output current from a 4V to 24V (28V maximum) input
supply. It uses a valley current control architecture to de-
liver very low duty cycle operation at high frequency with
excellent transient response. The operating frequency is
selected by an external resistor and is compensated for
variations in V
IN
and V
OUT
.
The LTC3610 can be configured for discontinuous or
forced continuous operation at light load. Forced continu-
ous operation reduces noise and RF interference while
discontinuous mode provides high efficiency by reducing
switching losses at light loads.
Fault protection is provided by internal foldback current
limiting, an output overvoltage comparator and an optional
short-circuit shutdown timer. Soft-start capability for sup-
ply sequencing is accomplished using an external timing
capacitor. The regulator current limit is user programmable.
A power good output voltage monitor indicates when
the output is in regulation. The LTC3610 is available in a
compact 9mm × 9mm QFN package.
■
12A Output Current
■
Wide V
IN
Range = 4V to 24V
■
Internal N-Channel MOSFETs
■
True Current Mode Control
■
Optimized for High Step-Down Ratios
■
t
ON(MIN)
≤100ns
■
Extremely Fast Transient Response
■
Stable with Ceramic C
OUT
■
±1% 0.6V Voltage Reference
■
Power Good Output Voltage Monitor
■
Adjustable On-Time/Switching Frequency
■
Adjustable Current Limit
■
Programmable Soft-Start
■
Output Overvoltage Protection
■
Optional Short-Circuit Shutdown Timer
■
Low Shutdown I
Q
: 15µA
■
Available in a 9mm × 9mm 64-Pin QFN Package
■
Point of Load Regulation
■
Distributed Power Systems
High Efficiency Step-Down Converter
Efficiency vs Load Current
typical application
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 5481178, 6100678, 6580258, 5847554, 6304066.
LTC3610
2
3610ff
absolute MaxiMuM ratings
Input Supply Voltage (V
IN
, I
ON
) .................. 28V to –0.3V
Boosted Topside Driver Supply Voltage
(BOOST) ................................................ 34V to –0.3V
SW Voltage ............................................ 28V to –0.3V
INTV
CC
, EXTV
CC
, (BOOST – SW), RUN/SS,
PGOOD Voltages ...................................... 7V to –0.3V
FCB, V
ON
, V
RNG
Voltages ............ INTV
CC
+ 0.3V to –0.3V
I
TH
, V
FB
Voltages ....................................... 2.7V to –0.3V
Operating Temperature Range
(Note 4) ............................................. –40°C to 125°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range ................... –55°C to 125°C
(Note 1)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Main Control Loop
V
IN
Operating Input Voltage Range 4 24 V
I
Q
Input DC Supply Current
Normal
Shutdown Supply Current
900
15
2000
30
µA
µA
V
FB
Feedback Reference Voltage I
TH
= 1.2V (Note 3)
●
0.594 0.600 0.606 V
ΔV
FB(LINEREG)
Feedback Voltage Line Regulation V
IN
= 4V to 28V, I
TH
= 1.2V (Note 3) 0.002 %/V
pin conFiguration
TOP VIEW
WP PACKAGE
64-LEAD (9mm × 9mm) QFN MULTIPAD
PGND 1
PGND 2
PGND 3
SW 4
SW 5
SW 6
SW 7
SW 8
SW 9
SW 10
SW 11
PV
IN
12
PV
IN
13
PV
IN
14
PV
IN
15
PV
IN
16
48 SGND
47 SGND
46 SGND
45 SGND
44 EXTV
CC
43 V
FB
42 SGND
41 I
ON
40 SGND
39 FCB
38 I
TH
37 V
RNG
36 PGOOD
35 V
ON
34 SGND
33 SGND
PV
IN
17
PV
IN
18
PV
IN
19
PV
IN
20
PV
IN
21
PV
IN
22
PV
IN
23
PV
IN
24
PV
IN
25
SW 26
NC 27
SGND 28
BOOST 29
RUN/SS 30
SGND 31
SGND 32
64 PGND
63 PGND
62 PGND
61 PGND
60 PGND
59 PGND
58 PGND
57 PGND
56 PGND
55 SW
54 INTV
CC
53 INTV
CC
52 SV
IN
51 SV
IN
50 SGND
49 SGND
68
SGND
67
PV
IN
66
SW
65
PGND
T
JMAX
= 125°C, θ
JA
= 28°C/W
orDer inForMation
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3610EWP#PBF LTC3610EWP#TRPBF LTC3610WP
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 125°C
LTC3610IWP#PBF LTC3610IWP#TRPBF LTC3610WP
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 125°C
LEAD
BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3610EWP LTC3610EWP#TR LTC3610WP
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 125°C
LTC3610IWP LTC3610IWP#TR LTC3610WP
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.*The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
electrical characteristics
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 4). V
IN
= 15V unless otherwise noted.
LTC3610
3
3610ff
electrical characteristics
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C (Note 4). V
IN
= 15V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ΔV
FB(LOADREG)
Feedback Voltage Load Regulation I
TH
= 0.5V to 1.9V (Note 3) –0.05 –0.3 %
I
FB
Feedback Input Current V
FB
= 0.6V –5 ±50 nA
g
m(EA)
Error Amplifier Transconductance I
TH
= 1.2V (Note 3)
●
1.4 1.7 2 mS
V
FCB
Forced Continuous Threshold
●
0.54 0.6 0.66 V
I
FCB
Forced Continuous Pin Current V
FCB
= 0.6V –1 –2 µA
t
ON
On-Time I
ON
= 60µA, V
ON
= 1.5V
I
ON
= 60µA, V
ON
= 0V
170 250
120
310 ns
ns
t
ON(MIN)
Minimum On-Time I
ON
= 180µA, V
ON
= 0V 60 100 ns
t
OFF(MIN)
Minimum Off-Time I
ON
= 30µA, V
ON
= 1.5V 290 500 ns
I
VALLEY(MAX)
Maximum Valley Current V
RNG
= 0.5V, V
FB
= 0.56V, FCB = 0V
V
RNG
= 0V, V
FB
= 0.56V, FCB = 0V
●
●
7
10
16
19
A
A
I
VALLEY(MIN)
Maximum Reverse Valley Current V
RNG
= 0.5V, V
FB
= 0.64V, FCB = 0V
V
RNG
= 0V, V
FB
= 0.64V, FCB = 0V
–6
–9
A
A
ΔV
FB(OV)
Output Overvoltage Fault Threshold 7 10 13 %
V
RUN/SS(ON)
RUN Pin Start Threshold
●
0.8 1.5 2 V
V
RUN/SS(LE)
RUN Pin Latchoff Enable Threshold RUN/SS Pin Rising 4 4.5 V
V
RUN/SS(LT)
RUN Pin Latchoff Threshold RUN/SS Pin Falling 3.5 4.2 V
I
RUN/SS(C)
Soft-Start Charge Current V
RUN/SS
= 0V –0.5 –1.2 –3 µA
I
RUN/SS(D)
Soft-Start Discharge Current V
RUN/SS
= 4.5V, V
FB
= 0V 0.8 1.8 3 µA
V
IN(UVLO)
Undervoltage Lockout V
IN
Falling
●
3.4 3.9 V
V
IN(UVLOR)
Undervoltage Lockout Release V
IN
Rising
●
3.5 4 V
R
DS(ON)
Top Switch On-Resistance
Bottom Switch On-Resistance
12
6.5
16
10
mΩ
mΩ
Internal
V
CC
Regulator
V
INTVCC
Internal V
CC
Voltage 6V < V
IN
< 28V, V
EXTVCC
= 4V
●
4.7 5 5.5 V
ΔV
LDO(LOADREG)
Internal V
CC
Load Regulation I
CC
= 0mA to 20mA, V
EXTVCC
= 4V –0.1 ±2 %
V
EXTVCC
EXTV
CC
Switchover Voltage I
CC
= 20mA, V
EXTVCC
Rising
●
4.5 4.7 V
ΔV
EXTVCC
EXTV
CC
Switch Drop Voltage I
CC
= 20mA, V
EXTVCC
= 5V 150 300 mV
ΔV
EXTVCC(HYS)
EXTV
CC
Switchover Hysteresis 500 mV
PGOOD Output
ΔV
FBH
PGOOD Upper Threshold V
FB
Rising 7 10 13 %
ΔV
FBL
PGOOD Lower Threshold V
FB
Falling –7 –10 –13 %
ΔV
FB(HYS)
PGOOD Hysteresis V
FB
Returning 1 2.5 %
V
PGL
PGOOD Low Voltage I
PGOOD
= 5mA 0.15 0.4 V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note
2: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
as follows:
T
J
= T
A
+ (P
D
• 28°C/W) (θ
JA
is simulated per JESD51-7 high effective
thermal conductivity test board)
θ
JC
= 0.24°C/W (θ
JC
is simulated when heat sink is applied at the
bottom of the package).
Note 3: The LTC3610 is tested in a feedback loop that adjusts V
FB
to
achieve a specified error amplifier output voltage (I
TH
).
Note 4: The LTC3610 is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTC3610E is guaranteed to meet performance specifications
from 0°C to 125°C. Specifications over the –40°C to 125°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC3610I is guaranteed over the
full –40°C to 125°C operating junction temperature range. Note that
the maximum ambient temperature is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
resistance and other environmental factors.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

LTC3610IWP#TRPBF

Mfr. #:
Buy LTC3610IWP#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 12A, 28V Synchronous Step-Down DC/DC Converter
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet