MIC23031_10 Datasheet, PDF (3/18 Pages) Micrel Semiconductor – 4MHz PWM 400mA Buck Regulator with HyperLight Load

Micrel, Inc.
MIC23031
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) . ……………………………………….6V
Sense (V_SNS).. ..................................................................6V
Output Switch Voltage ..................................................6V
Enable Input Voltage (V_EN)................................−0.3V to V_IN
Storage Temperature Range ..……………−65°C to +150°C
ESD Rating⁽³⁾................................................. ESD Sensitive
Operating Ratings⁽²⁾
Supply Voltage (V_IN)... …………………………..2.7V to 5.5V
Enable Input Voltage (V_EN) .. ……………………….0V to V_IN
Output Voltage Range (V_SNS) ………………….0.7V to 3.6V
Junction Temperature Range (T_J).. ….−40°C ≤ T_J ≤ +125°C
Thermal Resistance
1.6 x 1.6mm Thin MLF^®-6 (θ_JA).......................92.4°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C; V_IN = V_EN = 3.6V; L = 1µH; 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)
Quiescent Current
I_OUT = 0mA , SNS > 1.2 * V_OUT Nominal
Shutdown Current
V_EN = 0V, V_IN = 5.5V
Output Voltage Accuracy
V_IN = 3.6V; I_LOAD = 20mA
Min.
2.7
2.45
−2.5
Typ.
2.55
21
0.01
Feedback Voltage
Adjustable Option Only
0.62
Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
PWM Switch ON-Resistance
Frequency
SNS = 0.9*V_OUTNOM
V_IN = 3.0V to 5.5V, V_OUT = 1.2V, I_LOAD = 20mA,
20mA < I_LOAD < 400mA, V_OUT = 1.2V,
V_IN = 3.6V
I_SW = 100mA PMOS
I_SW = −100mA NMOS
I_OUT = 120mA
0.41
0.7
0.3
0.7
0.65
0.8
4
Soft-Start Time
Enable Threshold
V_OUT = 90%
100
0.5
0.9
Enable Input Current
0.1
Over-Temperature Shutdown
160
Over-Temperature Shutdown Hysteresis
20
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.
Max.
5.5
2.65
35
4
+2.5
Units
V
V
µA
µA
%
V
1
A
%/V
%
Ω
MHz
µs
1.2
V
2
µA
°C
°C
October 2010
3
M9999-102210-A