MP2105_06 Datasheet, PDF (2/8 Pages) Monolithic Power Systems – 1MHz, 800mA Synchronous Step-Down Converter

TM
MP2105 – 1MHz 800mA SYNCHRONOUS STEP-DOWN CONVERTER
PACKAGE REFERENCE
TOP VIEW
EN 1
5 FB
GND 2
SW 3
4 IN
MP2105_PD01_TSOT23-5
Part Number* Package
Temperature
MP2105DJ
TSOT23-5 –40°C to +85°C
* ^{For Tape & Reel, add suffix –Z (eg. MP2105DJ–Z)}
For Lead Free, add suffix –LF (eg. MP2105DJ–LF–Z)
ABSOLUTE MAXIMUM RATINGS ⁽¹⁾
V_IN to GND .................................. –0.3V to +6.5V
V_SW to GND........................... –0.3V to V_IN +0.3V
V_FB, V_EN to GND.......................... –0.3V to +6.5V
Junction Temperature.............................+150°C
Lead Temperature ..................................+260°C
Storage Temperature .............–65°C to +150°C
Recommended Operating Conditions ⁽²⁾
Supply Voltage V_IN............................. 2.5V to 6V
Output Voltage V_OUT .......................... 0.6V to 6V
Operating Temperature .............–40°C to +85°C
Thermal Resistance ⁽³⁾ θ_JA θ_JC
TSOT23-5.............................. 220 .... 110.. °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
Supply Current
Shutdown Current
IN Undervoltage Lockout
Threshold
V_EN = V_IN, V_FB = 0.65V
V_EN = 0V, V_IN = 6V
Rising Edge
440
600
0.10
1
2.15 2.30 2.40
IN Undervoltage Lockout
Hysteresis
55
Regulated FB Voltage
FB Input Bias Current
PFET On Resistance
NFET On Resistance
SW Leakage Current
PFET Current Limit
V_FB
T_A = +25°C
–40°C ≤ T_A ≤ +85°C
V_FB = 0.65V
I_SW = 100mA
I_SW = –100mA
V_EN = 0V, V_IN = 6V,
V_SW = 0V or 6V
Duty Cycle = 100%,
Current Pulse Width < 1ms
0.588
0.582
–50
–1
1.2
0.600
0.600
0.5
0.42
0.26
1.6
0.612
0.618
+50
+1
2.1
Oscillator Frequency
f_OSC
Thermal Shutdown Trip
Threshold
0.85 1.05 1.25
145
EN Trip Threshold
EN Input Current
–40°C ≤ T_A ≤ +85°C
V_EN = 0V to 6V
0.3
0.96
1.5
–1
+1
Notes:
4) 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
Units
µA
µA
V
mV
V
nA
Ω
Ω
µA
A
MHz
°C
V
µA
MP2105 Rev. 1.3
www.MonolithicPower.com
2
5/11/2006
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