LQH4C100K04 MPS [Monolithic Power Systems], LQH4C100K04 Datasheet

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LQH4C100K04

Manufacturer Part Number
LQH4C100K04
Description
1.6MHz Synchronous Step-Down plus 200mA LDO
Manufacturer
MPS [Monolithic Power Systems]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LQH4C100K04M
Manufacturer:
Murata
Quantity:
650
Part Number:
LQH4C100K04M00
Manufacturer:
MURATA/村田
Quantity:
20 000
The Future of Analog IC Technology
DESCRIPTION
The MP2101 is an internally compensated
1.6MHz
switcher with a 200mA low dropout (LDO) linear
regulator. It is ideal for portable equipment
powered by a single cell Lithium-Ion (Li+)
Battery. The MP2101 can provide 800mA and
200mA of load current from a 2.5V to 6V input
voltage. Both output voltages can be regulated
as low as 0.6V.
The
integrated high-side switch and synchronous
rectifier for high efficiency without an external
Schottky diode. With peak current mode control
and internal compensation, the MP2101 can be
stabilized with ceramic capacitors and small
inductors. The high-side switch can maintain
100% duty cycle in dropout condition.
The 200mA LDO output is used to power noise
sensitive circuitry. It has a separate input supply
to reduce power dissipation and noise from the
main switcher. Dropout voltage is 280mV under
a 150mA load. Fault condition protection
includes cycle-by-cycle current limiting and
thermal shutdown.
The MP2101 is available in small 3mm x 3mm
10-pin QFN packages.
TYPICAL APPLICATION
MP2101 Rev. 1.0
8/18/2006
1.8V @ 600mA
OFF ON
2.5V - 6V
800mA
OUT1
V
IN
fixed-frequency
output
L1
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
channel
2
3
4
6
1
PWM
EN1
IN1
SW1
IN2
FB1
MP2101
features
step-down
PWROK
OUT2
© 2006 MPS. All Rights Reserved.
GND
EN2
FB2
www.MonolithicPower.com
TM
TM
9
8
7
10
5
an
FEATURES
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
1.6MHz Synchronous Step-Down
0.8A Switcher Output and 0.2A LDO Output
V
V
Internal Power MOSFET Switches
Stable with Low ESR Output Ceramic
Capacitors
Up to 93% Efficiency
0.01µA Shutdown Current
1.6MHz Fixed Switching Frequency
Up to 100% Switcher Duty Cycle
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Short Circuit Protection
Power On Reset Output
Available in 3x3 10-Pin QFN Packages
DVD+/-RW Drives
Smart Phones
PDAs
Digital Cameras
Portable Instruments
OUT2
1.2V @ 200mA
POWER OK
IN1
IN2
Range for Switcher: 2.5V to 6V
Range for LDO: 1.2V to V
100
90
80
70
60
50
40
10
Efficiency vs
Load Current
V
IN
=3.3V
LOAD CURRENT (mA)
plus 200mA LDO
V
IN
=5.0V
V
MP2101
100
IN
=4.2V
IN1
1000
1

Related parts for LQH4C100K04

LQH4C100K04 Summary of contents

Page 1

The Future of Analog IC Technology DESCRIPTION The MP2101 is an internally compensated 1.6MHz fixed-frequency PWM switcher with a 200mA low dropout (LDO) linear regulator ideal for portable equipment powered by a single cell Lithium-Ion (Li+) Battery. The ...

Page 2

TM PACKAGE REFERENCE TOP VIEW FB1 1 10 EN1 2 9 IN1 3 8 SW1 4 7 GND 5 6 EXPOSED PAD ON BACKSIDE Part Number* Package QFN10 MP2101DQ (3mm x 3mm) * For Tape & Reel, add suffix –Z ...

Page 3

TM ELECTRICAL CHARACTERISTICS 3.6V +25°C, unless otherwise noted. IN1/2 EN1/2 A Parameters SW1 PFET On Resistance SW1 NFET On Resistance SW1 Leakage Current SW1 PFET Peak Current Limit Oscillator Frequency Linear Regulator LDO IN2 ...

Page 4

TM TYPICAL PERFORMANCE CHARACTERISTICS V = 3.6V 1.8V OUT1 OUT2 T = +25°C, unless otherwise noted. A Efficiency vs Load Current =3. =4. =5.0V IN ...

Page 5

TM TYPICAL PERFORMANCE CHARACTERISTICS V = 3.6V 1.8V OUT1 OUT2 T = +25°C, unless otherwise noted. A Output Voltage vs Load Current V = 1.5V OUT2 1.56 1.54 1.52 V =3.3V IN 1.50 LDO 1.48 0 ...

Page 6

TM TYPICAL PERFORMANCE CHARACTERISTICS V = 3.6V 1.8V OUT1 OUT2 T = +25°C, unless otherwise noted. A Input Ramp 4V 0.3A, OUT1 I = 0.1A Resistive Load OUT2 V IN 2V/div. ...

Page 7

TM OPERATION The MP2101 is a fixed-frequency 1.6MHz, 800mA current mode PWM step-down switcher with a 200mA low dropout (LDO) linear regulator. The MP2101 is optimized for low voltage, Li-Ion battery powered applications where high efficiency and small size are ...

Page 8

TM 800mA Step-Down Switcher The switcher integrates both a main switch and a synchronous rectifier, which provides high efficiency and eliminates the need for an external Schottky diode. This switcher can achieve 100% duty cycle. The duty cycle (D) of ...

Page 9

... Sumida CDRH3D16 Table 3—Inductors for Improved Efficiency at 25mA, 50mA, under 100mA Load. Manufacturer Part Number Coilcraft DO1605T-103MX Murata LQH4C100K04 Sumida CR32-100 Sumida CR54-100 MP2101 Rev. 1.0 8/18/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2101 – 1.6MHz SYNCHRONOUS STEP-DOWN PLUS 200mA LDO Inductor Selection A 1µ ...

Page 10

TM Switcher Input Capacitor Selection The input capacitor (C ) reduces the surge IN1 current drawn from the input and switching noise from the device. The input capacitor impedance at the switching frequency should be less than the input source ...

Page 11

TM TYPICAL APPLICATION CIRCUIT OPTIONAL IN3 IN3 OUT1 1.8V @ 800mA Figure 2—Optional RC Delay on EN1 and EN2 Circuit MP2101 Rev. 1.0 8/18/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP2101 ...

Page 12

TM PACKAGE INFORMATION NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not ...

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