MIC23050_11 Datasheet, PDF (3/15 Pages) Micrel Semiconductor – 4MHz PWM Buck Regulator with HyperLight Load™ Switching Scheme

Micrel, Inc.
MIC23050
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) .........................................................6V
Output Switch Voltage (V_SW) ............................................6V
Output Switch Current (I_SW)..............................................2A
Logic Input Voltage (V_EN, V_LQ)........................... V_IN to –0.3V
Junction Temperature (T_J) ....................................... +150°C
Storage Temperature Range (T_s)..............–65°C to +150°C
ESD Rating⁽³⁾.................................................................. 3kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN)......................................... 2.7V to 5.5V
Logic Input Voltage (V_EN) ....................................... 0V to V_IN
Junction Temperature (T_J) ..................–40°C ≤ T_J ≤ +125°C
Thermal Resistance
2mm x 2mm MLF-8 (θ_JA) ...................................90°C/W
2mm x 2mm MLF-8 (θ_JC) ...................................45°C/W
Electrical Characteristics⁽⁴⁾
T_A = 25°C with V_IN = V_EN = 3.6V; L = 1µH; C_FF = 560pF; C_OUT = 4.7µF; I_OUT = 20mA unless otherwise specified. Bold values indicate
–40°C ≤ T_J ≤ +125°C.
Parameter
Condition
Min. Typ. Max. Units
Supply Voltage Range
2.7
5.5
V
Undervoltage Lockout Threshold
(turn-on)
2.45 2.55 2.65
V
UVLO Hysteresis
100
mV
Quiescent Current, Hyper LL Mode
Shutdown Current
Output Voltage Accuracy
Current Limit in PWM Mode
Output Voltage Line Regulation
Output Voltage Load Regulation
Maximum Duty Cycle
PWM Switch ON-Resistance
Frequency
Soft-Start Time
Enable Threshold
I_OUT = 0mA , V_SNS > 1.2*V_OUT nominal
V_IN = 5.5V; V_EN = 0V;
V_IN = 3.0V, I_LOAD = 20mA
SNS = 0.9*V_NOM
V_IN = 3.0V to 5.5V, I_LOAD = 20mA
20mA < I_LOAD < 500mA,
SNS ≤ V_NOM
I_SW = 100mA PMOS
I_SW = −100mA NMOS
I_LOAD = 120mA
V_OUT = 90%
(turn-on)
20
32
0.01
4
–2.5
+2.5
0.65
1
1.7
0.5
0.3
80
89
0.45
0.5
3.4
4
4.6
650
0.5
0.8
1.2
µA
µA
%
A
%/V
%
%
Ω
Ω
MHz
µs
V
Enable Hysteresis
35
mV
Enable Input Current
0.1
2
µA
Over-Temperature Shutdown
Over-Temperature Shutdown
Hysteresis
165
°C
20
°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.
September 2011
3
M9999-092211-E