MIC2204 Datasheet, PDF (3/11 Pages) Micrel Semiconductor – High-Efficiency 2MHz Synchronous Buck Converter

MIC2204
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⁽²⁾
Storage Temperature (T_S) ....................... –65°C to +150°C
Micrel
Operating Ratings⁽³⁾
Supply Voltage (V_IN) ................................... +2.3V to +5.5V
Junction Temperature (T_J) ................ –40°C ≤ T_J ≤ +125°C
Package Thermal Resistance
MSOP (θ_JA) ....................................................... 115°C/W
3mm×3mm MLF™-10L (θ_JA) ............................... 60°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C with V_IN =V_EN = 3.5V, unless otherwise noted. Bold values indicate –40°C < T_J < +125°C
Parameter
Condition
Min Typ
Supply Voltage Range
2.3
Current Limit
Quiescent Current
V_FB = 0.7V
V_FB = 1.1V
EN = 0V
0.6
1.2
320
6.0
Feedback Voltage
0.98 1.0
Output Voltage Line Regulation
Output Voltage Load Regulation
Maximum Duty Cycle
Switch On-Resistance
Oscillator Frequency
V_OUT = 1V, V_IN = 2.3V to 5.5V, I_LOAD= 100mA
0mA < I_LOAD < 500mA
V_FB = 0.7V
I_SW = 300mA, V_FB = 0.7V
I_SW = –300mA, V_FB = 1.1V
0.2
0.2
100
0.72
0.55
1.8
2
Sync Frequency Range
1.8
SYNC_IN Threshold
1.2
Sync Minimum Pulse Width
10
SYNC_IN Input Current
1
Enable Threshold
0.52 0.72
Enable Hysteresis
20
Enable Input Current
1
Overtemperature Shutdown
160
Overtemperature Shutdown
20
Hysteresis
Notes:
1. Exceeding the ABSOLUTE MAXIMUM RATINGS may damage device.
2. Absolute maximum power dissipation is limited by maximum junction temperature where P_D(MAX) = (T_J(MAX)–T_A) ÷ θ_JA.
3. The device is not guaranteed to function outside its operating rating.
4. Specification for packaged product only.
Max Units
5.5
V
2
A
450
µA
15
µA
1.02
V
%
%
%
Ω
Ω
2.2 MHz
2.5 MHz
V
ns
2
µA
0.96
V
mV
2
µA
°C
°C
January 2004
3
M0214-012904