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MP1497DJ-LF-P

P1-P3P4-P6P7-P9P10-P12P13-P15
MP1497
High-Efficiency, 3A, 16V, 500kHz
Synchronous, Step-Down Converter
MP1497 Rev. 1.06 www.MonolithicPower.com 1
9/7/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP1497 is a high-frequency, synchronous,
rectified, step-down switch mode converter with
built in internal power MOSFETs. It offers a
very compact solution to achieve 3A continuous
output current with excellent load and line
regulation over a wide input supply range. The
MP1497 has synchronous mode operation for
higher efficiency over the output current load
range.
Current-mode operation provides a fast
transient response and eases loop stabilization.
Protective features include over-current
protection, thermal shutdown, and external SS
control.
The MP1497 requires a minimal number of
readily-available external components and is
available in a space-saving 8-pin TSOT23
package.
FEATURES
Wide 4.5V-to-16V Operating Input Range
80m/30m Low R
DS(ON)
Internal Power
MOSFETs
Proprietary Switching-Loss–Reduction
Technique
High-Efficiency Synchronous Mode
Operation
Fixed 500kHz Switching Frequency
Can Synchronize to a 200kHz-to-2MHz
External Clock
Externally-Programmable Soft-Start
OCP and Hiccup
Thermal Shutdown
Output Adjustable from 0.8V
Available in an 8-pin TSOT-23 Package
APPLICATIONS
Notebook Systems and I/O Power
Digital Set-Top Boxes
Flat-Panel Televisions and Monitors
Distributed Power Systems
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks o
f
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP1497
IN
EN/SYNC
VCC
SS
GND
FB
SW
BSTVIN
EN
C3
0.1
R1
R3
33k
40.2k
R
2
13k
L1
C2
C4
C1
22
2
6
7
1
5
3
8
4
3.3
4.5V-16V
V/3A
C5
22
MP1497 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
MP1497 Rev. 1.06 www.MonolithicPower.com 2
9/7/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Package Top Marking
MP1497DJ TSOT-23-8 ACQ
For Tape & Reel, add suffix –Z (e.g. MP1497DJ–Z);
For RoHS, compliant packaging, add suffix –LF (e.g. MP1497DJ–LF–Z).
PACKAGE REFERENCE
SS
IN
SW
GND
FB
VCC
EN/SYNC
BST
1
2
3
4
8
7
6
5
TOP VIEW
ABSOLUTE MAXIMUM RATINGS
(1)
V
IN
..................................................-0.3V to 17V
V
SW
...-0.3V (-5V for <10ns) to 17V (19V for 5ns)
V
BS
......................................................... V
SW
+6V
All Other Pins................................ -0.3V to 6V
(2)
Continuous Power Dissipation (T
A
= +25°C)
(3)
........................................................... 1.25W
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature................. -65°C to 150°C
Recommended Operating Conditions
(4)
Supply Voltage V
IN
...........................4.5V to 16V
Output Voltage V
OUT
.................... 0.8V to V
IN
–3V
Operating Junction Temp. (T
J
). -40°C to +125°C
Thermal Resistance
(5)
θ
JA
θ
JC
TSOT-23-8............................. 100 ..... 55... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) About the details of the EN pin’s ABS MAX rating, please
refer to Page 9, Enable section.
3) The maximum allowable power dissipation is a function of the
maximum junction temperature T
J
(MAX), the junction-to-
ambient thermal resistance
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by P
D
(MAX) = (T
J
(MAX)-T
A
)/
JA
. Exceeding the maximum allowable powe
r
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
4) The device is not guaranteed to function outside of its
operating conditions.
5) Measured on JESD51-7, 4-layer PCB.
MP1497 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS
MP1497 Rev. 1.06 www.MonolithicPower.com 3
9/7/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
V
IN
= 12V, T
A
= 25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
Supply Current (Shutdown) I
IN
V
EN
= 0V 1 A
Supply Current (Quiescent) I
q
V
EN
= 2V, V
FB
= 1V 0.7 1 mA
HS-Switch ON Resistance HS
RDS-ON
V
BST-SW
=5V 80 m
LS-Switch ON Resistance LS
RDS-ON
V
CC
=5V 30 m
Switch Leakage SW
LKG
V
EN
= 0V, V
SW
=12V 1 A
Current Limit
(6)
I
LIMIT
Under 40% Duty Cycle 4.2 5 A
Oscillator Frequency f
SW
V
FB
=750mV 440 500 580 kHz
Fold-back Frequency f
FB
V
FB
<400mV 0.25 f
SW
Maximum Duty Cycle D
MAX
V
FB
=700mV 90 95 %
Minimum ON Time
(6)
ON_MIN
60 ns
Sync Frequency Range f
SYNC
0.2 2 MHz
T
A
=25°C 791 807 823
Feedback Voltage V
FB
-40°C<T
A
<85°C
(7)
787 807 827
mV
Feedback Current I
FB
V
FB
=820mV 10 50 nA
EN Rising Threshold V
EN_RISING
1.2 1.4 1.6 V
EN Falling Threshold V
EN_FALLING
1.1 1.25 1.4 V
V
EN
=2V 2 A
EN Input Current I
EN
V
EN
=0 0 A
EN Turn Off Delay EN
Td-off
8 s
V
IN
Under-Voltage Lockout
Threshold-Rising
INUV
Vth
3.7 3.9 4.1 V
V
IN
Under-Voltage Lockout
Threshold-Hysteresis
INUV
HYS
650 mV
VCC Regulator V
CC
5 V
VCC Load Regulation I
CC
=5mA 3 %
Soft-Start Current I
SS
5 11 17 A
Thermal Shutdown
(6)
150 °C
Thermal Hysteresis
(6)
20 °C
Notes:
6) Guaranteed by design.
7) Not tested in production and guaranteed by over-temperature correlation.
P1-P3P4-P6P7-P9P10-P12P13-P15

MP1497DJ-LF-P

Mfr. #:
Buy MP1497DJ-LF-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Switching Voltage Regulators 2A 16V 500kHz Sync Step-Down Converter
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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