MIC2202_07 Datasheet, PDF (3/19 Pages) Micrel Semiconductor – High Efficiency 2MHz Synchronous Buck Converter 1μF Stable PWM Regulator

Micrel, Inc.
MIC2202
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) .........................................................6V
Output Switch Voltage (V_SW) ............................................6V
Logic Input Voltage (V_EN, V_{SYNC_IN}).................... V_IN to –0.3V
Power Dissipation ..................................................... Note 3
Storage Temperature (T_s) .........................–65°C to +150°C
ESD Rating⁽⁴⁾.................................................................. 2kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)..................................... +2.3V to +5.5V
Junction Temperature (T_J) ..................–40°C ≤ T_J ≤ +125°C
Package Thermal Resistance
MSOP-10L (θ_JA) ...............................................115°C/W
3x3 MLF-10 (θ_JA) ...............................................60°C/W
Electrical Characteristics⁽⁵⁾
T_A = 25°C with V_IN = 3.5V unless otherwise noted; bold values indicate –40°C< T_J < +125°C.
Parameter
Condition
Min Typ
Supply Voltage Range
2.3
Quiescent Current
EN = V_IN; V_FB = 0.55V (not switching)
350
EN = 0V
0.01
MIC2202 [Adjustable] Feedback
Voltage
0.4875 0.5
Output Voltage Line Regulation V_OUT < 2V; V_IN = 2.3V to 5.5V, I_LOAD= 100mA
0.05
Output Voltage Load Regulation
Bias Regulator Output Voltage
0mA < I_LOAD < 500mA
0.1
2.2
2.32
Maximum Duty Cycle
Current Limit
V_FB = 0.7V
V_FB = 0.7V
100
1
1.8
Switch ON-Resistance
V_IN = 3.5V, I_SW = 300mA; V_FB = 0.35V
V_IN = 3.5V, I_SW = 300mA; V_FB = 0.55V
0.65
0.55
Enable Input Current
0.01
Sync Frequency Range
1.6
SYNC_IN Threshold
0.7
1
Sync Minimum Pulse Width
10
SYNC_IN Input Current
Oscillator Frequency
1.8
2
Enable Threshold
0.5
0.9
Enable Hysteresis
20
Over-temperature Shutdown
160
Over-temperature Shutdown
20
Hysteresis
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Absolute maximum power dissipation is limited by maximum junction temperature where P_D(MAX) = (T_J(MAX) – T_A) ÷ θ_JA.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
5. Specification for packaged product only.
Max
5.5
450
1
0.5125
0.5
0.5
2.6
2.5
0.9
0.75
1
2.5
1.7
1
2.2
1.3
Units
V
µA
µA
V
%
%
V
%
A
Ω
Ω
µA
MHz
V
ns
µA
MHz
V
mV
°C
°C
March 2007
3
M9999-031907