MP2158
1A, 6V, 1.5MHz, 17 A I , COT
Q
Synchronous Step Down Switcher
In Ultra-small 2x1.5mm QFN
The Future of Analog IC Technology
DESCRIPTION FEATURES
The MP2158 is a monolithic step-down switch
Very Low I : 17 A
Q
mode converter with built-in internal power
Default 1.5MHz Switching Frequency
MOSFETs. It achieves 1A continuous output
EN and Power Good for Power Sequencing
current from a 2.5V to 6V input voltage with
Ultra-small 2.0x1.5mm QFN8 Package
excellent load and line regulation. The output
Wide 2.5V to 6V Operating Input Range
voltage can be regulated as low as 0.6V.
Output Adjustable from 0.6V
Up to 1A Output Current
The Constant-On-Time control scheme
provides fast transient response and eases loop 100% Duty Cycle in Dropout
stabilization. Fault condition protection includes 118m and 88m Internal Power MOSFET
Switches
cycle-by-cycle current limiting and thermal
shutdown.
Cycle-by-Cycle Over Current Protection
Short Circuit Protect with Hiccup Mode
The MP2158 is available in the small QFN8
Stable with Low ESR Output Ceramic
2.0x1.5mm package and requires a minimum
Capacitors
number of readily available standard external
components.
APPLICATIONS
The MP2158 is ideal for a wide range of
Wireless/Networking Cards
applications including High Performance DSPs,
Portable Instruments
FPGAs, PDAs, and portable instruments.
Battery Powered Devices
Low Voltage I/O System Power
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 of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
L1
VIN VOUT
2.5V to 6V 1 H 1.2V/1A
SW
VIN
C1 OUT C2
10 F
10 F
R1
MP2158
200k
EN
EN
FB
R2
PG
PG
200k
AGND PGND
MP2158 Rev. 1.03 www.MonolithicPower.com 1
7/5/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2016 MPS. All Rights Reserved. MP2158 1A, 6V, 1.5MHz SYNCHRONOUS STEP-DOWN SWITCHER
ORDERING INFORMATION
Part Number* Package Top Marking
MP2158GQH QFN-8 (2.0mmx1.5mm) See Below
* For Tape & Reel, add suffix Z (e.g. MP2158GQHZ);
TOP MARKING
BE: product code of MP2158GQH;
LL: lot number;
PACKAGE REFERENCE
TOP VIEW
1
EN 8 PG
2 7
FB VIN
AGND 3 6 SW
OUT
4 5 PGND
QFN-8 (2.0mmx1.5mm)
(1) (4)
ABSOLUTE MAXIMUM RATINGS Thermal Resistance
JA JC
Supply Voltage V ...................................... 6.5V
QFN-8 (2.0mmx1.5mm)......... 110..... 55... C/W
IN
V ......................................................................
SW
Notes:
-0.3V (-1.5V for <20ns&-4V for <8ns) to 6.5V
1) Exceeding these ratings may damage the device.
(10V for <10ns)
2) The maximum allowable power dissipation is a function of the
(MAX), the junction-to-
maximum junction temperature T
All Other Pins................................-0.3V to 6.5 V J
ambient thermal resistance , and the ambient temperature
JA
Junction Temperature...............................150C
T . The maximum allowable continuous power dissipation at
A
any ambient temperature is calculated by P (MAX) = (T
Lead Temperature ....................................260C D J
(MAX)-T )/ . Exceeding the maximum allowable power
(2) A JA
Continuous Power Dissipation (T = +25C)
A
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
... ............................................... 1.14W
shutdown circuitry protects the device from permanent
Storage Temperature............... -65C to +150 C
damage.
3) The device is not guaranteed to function outside of its
(3)
operating conditions.
Recommended Operating Conditions
4) Measured on JESD51-7, 4-layer PCB.
Supply Voltage V .............................2.5V to 6V
IN
Operating Junction Temp. (T ). -40C to +125C
J
MP2158 Rev. 1.03 www.MonolithicPower.com 2
7/5/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
2016 MPS. All Rights Reserved.