MP2104
1.7MHz, 600mA Synchronous Step-Down Converter
The Future of Analog IC Technology
TM
TM
DESCRIPTION
The MP2104 is a 1.7MHz constant frequency,
current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery. The MP2104 can supply 600mA of load current from a 2.5V to 6V input voltage. The output voltage for the MP2104DJ can be regulated as low as 0.6V, while the output voltages of the MP2104DJ-1.5 and MP2104DJ-1.8 are fixed at 1.5V and 1.8V, respectively. The MP2104 can also run at 100% duty cycle for low dropout applications.
The MP2104 is available in a low profile (1mm) 5-pin, TSOT package. ORDERING INFORMATION
Part Number Output Voltage MP2104DJ-1.5 V OUT = 1.5V MP2104DJ-1.8 V OUT = 1.8V MP2104DJ V OUT = 0.6V to 6V
EVALUATION BOARD REFERENCE
Board Number Dimensions EV2104DJ-00A
2.0”X x 2.0”Y x 0.5”Z
FEATURES
• High Efficiency: Up to 95%
• 1.7MHz Constant Switching Frequency • 600mA Available Load Current • 2.5V to 6V Input Voltage Range • Output Voltage as Low as 0.6V • 100% Duty Cycle in Dropout • Current Mode Control • Short Circuit Protection • Thermal Fault Protection • <0.1µA Shutdown Current
• 1.5V and 1.8V Fixed Output Versions •
Space Saving 5-Pin TSOT23 Package
APPLICATIONS
• Cellular and Smart Phones
• Microprocessors and DSP Core Supplies • PDAs • MP3 Players
• Digital Still and Video Cameras • Portable Instruments
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic Power Systems, Inc.
电厂水处理TYPICAL APPLICATION
E F F I C I E N C Y (%)
10
100
1000
LOAD CURRENT (mA)
MP2104-EC01
Efficiency vs Load Current
MP2104 – 1.7MHz 600mA SYNCHRONOUS STEP-DOWN CONVERTER TM
PACKAGE REFERENCE
* For Tape & Reel, add suffix –Z (eg. MP2104DJ–Z)
For Lead Free, add suffix –LF (eg. MP2104DJ–LF–Z) ABSOLUTE MAXIMUM RATINGS (1) V IN –0.3V to +6.5V V SW –0.3V to V IN +0.3V V FB, V EN –0.3V to +6.5V SW 1.4A +150°C Lead Temperature (2)..............................+260°C Storage Temperature .............–65°C to +150°C **For Tape & Reel, add suffix –Z (eg. MP2104DJ-1.5–Z) For Lead Free, add suffix –LF (eg. MP2104DJ-1.5–LF–Z) Recommended Operating Conditions (3) Supply Voltage 2.5V to 6V Output Voltage 0.6V to 6V –40°C to +85°C Thermal Resistance (4)θJA θJC
<.110..°C/W
Notes:
1) Exceeding the ratings may damage the device.
2) For recommended IR reflow temperature information, refer to
MPS document MP2104_IRRTP.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on approximately 1” square of 1 oz copper.
ELECTRICAL CHARACTERISTICS (5)
V IN = V EN = 3.6V, T A = +25°C, unless otherwi noted.
Parameter Symbol
Condition Min
Typ
Max
Units Supply Current V EN = V IN, V FB = 0.65V 400 600 µA
Shutdown Current V EN = 0V, V IN = 6V 0.01 1 µA
IN Under Voltage Lockout
Threshold
Rising Edge 2.10 2.27 2.45 V
IN Under Voltage Lockout Hysteresis
55
mV T A = +25°C, MP2104DJ 0.588 0.600 0.612
Regulated FB Voltage
–40°C ≤ T A≤ +85°C 0.582 0.600 0.618园艺专业
V FB Input Bias Current V FB = 0.65V, MP2104DJ –50 0.5 +50 nA
MP2104 – 1.7MHz 600mA SYNCHRONOUS STEP-DOWN CONVERTER
TM
ELECTRICAL CHARACTERISTICS (continued) (5)
V IN = V EN = 3.6V, T A = +25°C, unless otherwi noted.
Parameter Symbol Condition
Min Typ Max Units MP2104DJ-1.5 I OUT = 50mA
–40°C ≤ T A ≤ +85°C
1.455 1.500 1.545
Regulated Output Voltage
MP2104DJ-1.8 I OUT = 50mA
–40°C ≤ T A ≤ +85°C
1.746 1.800 1.854 V
PFET On Resistance I SW =
100mA 0.44 Ω
NFET On Resistance I SW = –100mA
0.29 Ω SW Leakage Current
V EN = 0V, V IN = 6V
V SW = 0V or 6V –1 +1 µA PFET Current Limit
Duty Cycle = 100%,窦娥冤教案
Current Pul Width < 1ms
0.7 1.0 1.35 A Oscillator Frequency 1.26
1.70
2.08
MHz
Thermal Shutdown Trip Threshold
145 °C EN Trip Threshold –40°C ≤ T A ≤ +85°C 0.3 0.96 1.5 V EN Input Current V EN = 0V to 6V
–1 +1 µA
治疗失眠的特效穴位
Notes:
5) 100% production test at +25°C. Typical and temperature specifications are guaranteed by design and characterization.
MP2104 – 1.7MHz 600mA SYNCHRONOUS STEP-DOWN CONVERTER
TM
TYPICAL PERFORMANCE CHARACTERISTICS
V IN = 3.3V, V OUT = 1.8V, L1 = 10µH, C1 = 4.7µF, C3 = 10µF, T A = +25°C, unless otherwi noted.
2.0 2.5
3.0 3.5
4.0 4.5
5.0 5.5
6.0
SUPPLY VOLTAGE (V)
MP2104-TPC09
Output Voltage vs Load Current
TEMPERATURE (°C)
MP2104-TPC08
R E G U L A T E D F B V O L T A G E (V )
-
50-30-101030407090110130
-50-30-101030407090110130
TEMPERATURE (°C)
MP2104-TPC07
E F F I C I E N C Y (%)
Efficiency vs Load Current
E F F I C I E N C Y (%)
Efficiency vs Load Current
MP2104 – 1.7MHz 600mA SYNCHRONOUS STEP-DOWN CONVERTER
TM
TYPICAL PERFORMANCE CHARACTERISTICS
(continued)
V IN = 3.3V, V OUT = 1.8V, L1 = 10µH, C1 = 4.7µF, C3 = 10µF, T A
= +25°C, unless otherwi noted.
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