MIC23150 Datasheet, PDF (3/15 Pages) Micrel Semiconductor – 4MHz PWM 2A Buck Regulator with HyperLight Load

Micrel Inc.
MIC23150
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) . ……………………………………….6V
Sense (V_SNS).. ..................................................................6V
Output Switch Voltage (V_SW) ............................................6V
Enable Input Voltage (V_EN).. ..............................-0.3V to V_IN
Storage Temperature Range .. ……………-65°C to +150°C
ESD Rating⁽³⁾..................................................................2kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)... …………………………..2.7V to 5.5V
Enable Input Voltage (V_EN) .. ……………………….0V to V_IN
Junction Temperature Range (T_J)... ….-40°C ≤ T_J ≤ +125°C
Thermal Resistance
2mm x 2mm Thin MLF-8 (θ_JA) ...........................90°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C; V_IN = V_EN = 3.6V; L = 1.0µH; C_OUT = 4.7µF unless otherwise specified.
Bold values indicate –40°C ≤ T_J ≤ +125°C, unless noted.
Parameter
Condition
Supply Voltage Range
Under-Voltage Lockout Threshold (turn-on)
Under-Voltage Lockout Hysteresis
Quiescent Current
I_OUT = 0mA , SNS > 1.2 * V_OUT Nominal
Shutdown Current
Output Voltage Accuracy
Current Limit
V_EN = 0V; V_IN = 5.5V
V_IN = 3.6V if V_OUTNOM < 2.5V, I_LOAD = 20mA
V_IN = 4.5V if V_OUTNOM ≥ 2.5V, I_LOAD = 20mA
SNS = 0.9*V_OUTNOM
Output Voltage Line Regulation
Output Voltage Load Regulation
PWM Switch ON-Resistance
Switching Frequency
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
I_SW = 100mA PMOS
I_SW = -100mA NMOS
I_OUT = 120mA
SoftStart Time
V_OUT = 90%
Enable Threshold
Turn-On
Enable Input Current
Over-temperature Shutdown
Min
2.7
2.45
-2.5
2.2
0.5
Over-temperature Shutdown
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. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4. Specification for packaged product only.
Typ
2.55
75
23
0.01
3.4
0.3
0.75
0.150
0.110
4
115
0.8
0.1
160
20
Max Units
5.5
V
2.65
V
mV
40
µA
5
µA
+2.5
%
A
%/V
%/A
Ω
MHz
µs
1.2
V
2
µA
°C
°C
February 2009
3
M9999-082908-A