MIC2208_10 Datasheet, PDF (3/18 Pages) Micrel Semiconductor – 3mm x 3mm 1MHz 3A PWM Buck Regulator

Micrel, Inc.
MIC2208
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) ........................................ –0.3V to +6V
Output Switch Voltage (V_SW) .............................. –1V to +6V
Output Switch Current (I_SW)............................................10A
Logic Input Voltage (V_EN) .................................. –0.3V to V_IN
Storage Temperature (T_s) ........................... –60°C to 150°C
ESD Rating⁽³⁾.......................................................2kV (HBM)
Operating Ratings⁽²⁾
Supply Voltage (V_IN)..................................... +2.7V to +5.5V
Logic Input Voltage (V_EN, V_LOWQ)............................ 0V to V_IN
Junction Temperature (T_J) ........................ –40°C to +125°C
Junction Thermal Resistance
3x3 MLF-12 (θ_JA) ...............................................60°C/W
Electrical Characteristics⁽⁴⁾
V_IN = V_EN = 3.6V; L = 1µH; C_OUT = 4.7µF; T_A = 25°C, unless noted. Bold values indicate –40°C< T_J < +125°C.
Parameter
Condition
Min Typ Max
Supply Voltage Range
2.7
5.5
Under-Voltage Lockout
Threshold
(turn-on)
2.45 2.55 2.65
UVLO Hysteresis
100
Quiescent Current
V_FB = 0.9 * V_NOM (not switching)
720
950
Shutdown Current
[Adjustable] Feedback
Voltage
V_EN = 0V
± 1%
± 2% (over temperature)
0.1
5
0.99
1
1.01
0.98
1.02
FB pin input current
1
100
Current Limit in PWM Mode
Output Voltage Line
Regulation
V_FB = 0.9 * V_NOM
V_OUT > 2.2V; V_IN = V_OUT + 500mV to 5.5V; I_LOAD = 20mA
V_OUT < 2.2V; V_IN = 2.7V to 5.5V; I_LOAD = 20mA
8
10
0.13
Output Voltage Load
Regulation
20mA < I_LOAD < 3A
0.2
1
PWM Switch ON-
Resistance
I_SW = 50mA V_FB = 0.7V_{FB_NOM} (High Side Switch)
95
20
300
Oscillator Frequency
0.9
1
1.1
Enable Threshold
0.5 0.85
1.3
Enable Input Current
0.1
2
Soft Start Time
V_OUT =10% to V_OUT = 90%
450
Over-Temperature
160
Shutdown
over-Temperature
20
Hysteresis
Power Good Range
±7
±10
Power Good Resistance
I_PGOOD
145
250
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
Units
V
V
mV
µA
µA
V
V
nA
A
%
%
mΩ
mΩ
MHz
V
µA
µs
°C
°C
%
Ω
May 2010
3
M9999-051410-D