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MP2102DK-LF-Z

P1-P3P4-P6P7-P9P10-P12
MP2102
1.5MHz, 800mA Dual-Output
Synchronous Step-Down Converter
MP2102 Rev. 1.1 www.MonolithicPower.com 1
9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MP2102 is a dual-output, internally
compensated, 1.5MHz fixed frequency PWM
step-down converter. It is ideal for powering
portable equipment from a single cell Lithium-
Ion (Li+) Battery. Each channel of the MP2102
can supply 800mA of load current from a 2.5V
to 6V input voltage. Both output voltages can be
regulated as low as 0.6V.
The device features integrated high-side
switches and synchronous rectifiers for high
efficiency step-down conversion without the
need for external Schottky diodes. With peak
current mode control and internal compensation,
the MP2102 can be stabilized with ceramic
capacitors and small inductors. Fault condition
protection includes cycle-by-cycle current
limiting and thermal shutdown.
The MP2102 is available in small 10-pin QFN
with exposed pad and 10-pin MSOP packages.
EVALUATION BOARD REFERENCE
Board Number Dimensions
EV2102DQ-00B 2.2”X x 2.2”Y x 0.4”Z
FEATURES
• Dual 800mA Outputs
• Internal Power MOSFET Switches
• Up to 95% Efficiency
• 1.5MHz Switching Frequency
• 1µA Shutdown Current
• Stable with Low ESR Output Ceramic Capacitors
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Short Circuit Protection
• Power-On Reset with Programmable Delay
• 2.5V to 6V Operating Input Range
• Output Adjustable from 0.6V to 5.4V
• Input Undervoltage Lockout
• Available in 10-Pin QFN with Exposed Pad
and 10-Pin MSOP Packages.
APPLICATIONS
• DVD+/-RW Drive
• Smart Phones
• PDAs
• Digital Cameras
• Portable Instruments
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
SW1
FB1
SW2
FB2
MP2102
DLY
3
2
7
6
10
5
1
4
8
9
PWROK
GND
VIN
EN2
EN1
V
IN
3.3V
V
OUT2
1.2V / 800mA
V
OUT1
1.8V / 800mA
PWROK
C4
1nF
100
90
80
70
60
50
40
30
20
EFFICIENCY (%)
10 100 1000
LOAD CURRENT (mA)
Efficiency vs
Load Current
V
OUT
=1.8V
V
OUT
=1.2V
MP2102 – 1.5MHz, 800mA DUAL-OUTPUT SYNCHRONOUS STEP-DOWN CONVERTER
MP2102 Rev. 1.1 www.MonolithicPower.com 2
9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
PACKAGE REFERENCE
Part Number* Package Temperature
MP2102DQ
QFN10
(3mm x 3mm)
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP2102DQ–Z)
For RoHS Compliant Packaging, add suffix –LF
(eg. MP2102DQ–LF–Z)
ABSOLUTE MAXIMUM RATINGS
(1)
VIN to GND.................................–0.3V to +6.5V
SW1/2 to GND ..................... –0.3V to V
IN
+ 0.3V
FB1/2, OUT1/2, EN1/2 to GND...–0.3V to +6.5V
Operating Temperature............. –40°C to +85°C
Junction Temperature...............................150°C
Lead Temperature ....................................260°C
Storage Temperature.............. –65°C to +150°C
Part Number* Package Temperature
MP2102DK MSOP10
–40°C to +85°C
*
For Tape & Reel, add suffix –Z (eg. MP2102DK–Z)
For RoHS Compliant Packaging, add suffix –LF
(eg. MP2102DK–LF–Z)
Recommended Operating Conditions
(2)
Supply Voltage V
IN
............................. 2.5V to 6V
Output Voltage V
OUT
....................... 0.6V to 5.4V
Operating Temperature .............–40°C to +85°C
Thermal Resistance
(3)
θ
JA
θ
JC
QFN10 .................................... 50 ...... 12... °C/W
MSOP10 ................................ 150 ..... 65... °C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The device is not guaranteed to function outside of its
operating conditions.
3) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
(4)
V
IN
= V
EN
= 3.6V, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
Supply Current V
EN
= V
IN
, V
FB
= 0.62V
750 µA
Shutdown Current V
EN
= 0V, V
IN
= 6V 0.01 1 µA
IN Under Voltage Lockout
Threshold
Rising Edge 1.7 2.0 2.3 V
IN Under Voltage Lockout
Hysteresis
100 mV
Output Line Regulation V
IN
= 2.5V to 6V 0.03 %/V
Output Load Regulation I
LOAD
= 50mA to 500mA 0.05 %/mA
TOP VIEW
FB1
EN1
VIN
SW1
GND
1
2
3
4
5
FB2
DLY
PWROK
EN2
SW2
10
9
8
7
6
EXPOSED PAD
ON BACKSIDE
CONNECT TO
GROUND (PIN 5)
FB1
EN1
VIN
SW1
GND
1
2
3
4
5
10
9
8
7
6
FB2
DLY
PWROK
EN2
SW2
TOP VIEW
MP2102 – 1.5MHz, 800mA DUAL-OUTPUT SYNCHRONOUS STEP-DOWN CONVERTER
MP2102 Rev. 1.1 www.MonolithicPower.com 3
9/21/2007 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2007 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
(4)
(continued)
V
IN
= V
EN
= 3.6V, T
A
= +25°C, unless otherwise noted.
Parameter Symbol Condition Min Typ Max Units
T
A
= +25°C 0.588 0.600 0.612
Regulated FB Voltage
–40°C T
A
+85°C 0.582 0.600 0.618
V
FB Input Bias Current V
FB
= 0.62V –50 –2 +50 nA
SW PFET On Resistance I
SW
= 100mA 0.4
SW NFET On Resistance I
SW
= –100mA 0.3
SW Leakage Current
V
EN
= 0V, V
IN
= 6V
V
SW
= 0V or 6V
–2 +2 µA
SW PFET Peak Current
Limit
Duty Cycle = 100%,
Current Pulse Width < 1ms
0.9 1.5 2.1 A
Oscillator Frequency 1.2 1.5 1.7 MHz
Thermal Shutdown Trip
Threshold
150 °C
PWROK Upper Trip
Threshold
FB1/2/OUT1/2 with respect to the
nominal value
10 %
PWROK Lower Trip
Threshold
FB1/2/OUT1/2 with respect to the
nominal value
–10 %
PWROK Output Lower
Voltage
I
SINK
= 5mA 0.3 V
PWROK Deglitch Timer C4 open 10 45 µs
PWROK Startup Delay C4 = 1nF 0.5 ms
DLY Pull-Down Resistor 0.8 M
EN1/2 Trip Threshold 0.40 0.98 1.40 V
EN1/2 Trip Threshold –40°C T
A
+85°C 0.30 0.96 1.50 V
EN Pull-Down Resistor 0.8 M
Note:
4) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
PIN FUNCTIONS
Pin # Name Description
1 FB1 Feedback Input 1. Feedback input for output 1.
2 EN1 Enable Input 1. “High” input enables the switcher. It has an internal 800k pull-down resistor.
3 VIN Input Supply Pin.
4 SW1 Switch Node 1. Switch node to the inductors.
5 GND Ground Pin.
6 SW2 Switch Node 2. Switch node to the inductors.
7 EN2 Enable Input 2. “High” input enables the switcher. It has an internal 800k pull-down resistor.
8 PWROK Power-On Reset Open Drain Output. Open drain output indicating that both outputs are
within 10% of the final regulation value. “Low” output indicates output is out of ±10% window.
PWROK is pulled down in shutdown.
9 DLY Delay Set. The startup power on reset delay is proportional to the value of C4 connected to
this pin. It has an internal 800k pull-down resistor.
10 FB2 Feedback Input 2. Feedback input for output 2.
P1-P3P4-P6P7-P9P10-P12

MP2102DK-LF-Z

Mfr. #:
Buy MP2102DK-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Switching Voltage Regulators Dual 800mA, 6V 1.5MHz Synch Buck
Lifecycle:
New from this manufacturer.
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