MIC23201 Datasheet, PDF (3/20 Pages) Micrel Semiconductor – 2MHz PWM 2A Buck Regulator

Micrel Inc.
MIC23201
Absolute Maximum Ratings ⁽¹⁾
Supply Voltage (VIN, SVIN)……………………………... ..6V
Sense (V_SNS).. ..................................................................6V
Power Good (PG)……................................................. ....6V
Output Switch Voltage ……………………………..…….6V
Enable Input Voltage (V_EN)............................... -0.3V to VIN
Storage Temperature Range………………-65C to +150C
ESD Rating⁽³⁾……………………………………………….1kV
Operating Ratings ⁽²⁾
Supply Voltage (VIN) ... …………………………..2.7V to 5.5V
Enable Input Voltage (V_EN) .. ……………………….0V to VIN
Output Voltage Range (V_SNS) ………………….0.95V to 3.6V
Junction Temperature Range (T_J) .... ….-40C  T_J  +125C
Thermal Resistance
3mm x 3mm MLF-10 (_JA) .............................60.7C/W
3mm x 3mm MLF-10 (_JC) .............................28.7C/W
Electrical Characteristics ⁽⁴⁾
T_A = 25°C; VIN = V_EN = 3.3V; L = 1.0µH; C_OUT = 22µF unless otherwise specified. Bold values indicate –40°C ≤ T_J ≤
+125°C, unless noted.
Parameter
Supply Voltage Range
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
Quiescent Current
Shutdown Current
Feedback Voltage
Feedback Bias Current
Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
PWM Switch ON-Resistance
Switching Frequency
Maximum Duty Cycle
Soft Start Time
Soft Start Current
Power Good Threshold (Rising)
Power Good Hysteresis
Power Good Delay
Power Good Pull Down Resistance
Enable Threshold
Enable Input Current
Over Temperature Shutdown
Over Temperature Shutdown
Hysteresis
Condition
V_IN Rising
I_OUT = 0mA , SNS > 1.2 * V_OUT Nominal
V_EN = 0V; V_IN = 5.5V
I_LOAD = 20mA
SNS = 0.9*V_OUTNOM
V_IN = 3.6V to 5.5V if V_OUTNOM < 2.5V, I_LOAD = 20mA
V_IN = 4.5V to 5.5V if V_OUTNOM ≥ 2.5V, I_LOAD = 20mA
20mA < I_LOAD < 500mA, V_IN = 3.6V if V_OUTNOM < 2.5V
20mA < I_LOAD < 500mA, V_IN = 5.0V if V_OUTNOM ≥ 2.5V
20mA < I_LOAD < 1A, V_IN = 3.6V if V_OUTNOM < 2.5V
20mA < I_LOAD < 1A, V_IN = 5.0V if V_OUTNOM ≥ 2.5V
I_SW = 100mA PMOS
I_SW = -100mA NMOS
I_OUT = 120mA
V_FB = 0V
V_OUT = 90%, CSS=470pF
V_SS = 0V
% of V_NOMINAL
I_PG = 250µA
Turn-On
T_J Rising
Min Typ Max Units
2.7
5.5
V
2.45 2.55 2.65
V
200
mV
1.15
3.35
mA
1.34
5
µA
0.604 0.62 0.635
V
1
µA
2.3
4.4
A
0.3
%/V
0.46
%
0.71
0.200
0.190
2
80
300
2.7
85
90
95
7
68
85
0.5
0.9
1.2
0.1
2
160
20
%

MHz
%
µs
µA
%
%
µs
Ω
V
µA
C
C
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.
August 2012
3
M9999-082912-A