MIC33263 Datasheet, PDF (3/19 Pages) Micrel Semiconductor – Buck Regulator with Integrated Inductor

Micrel, Inc.
MIC33263/4
Absolute Maximum Ratings⁽³⁾
Supply Voltage (V_IN = V_AVIN = V_PVIN) .................. −0.3V to 6V
Power Good Voltage (V_PG) ................................ −0.3V to 6V
Output Switch Voltage (V_SW) ............................. −0.3V to 6V
Enable Input Voltage (V_EN)................................−0.3V to V_IN
Junction Temperature (T_J) ....................................... +150°C
Storage Temperature Range (T_S) ............. −65°C to +150°C
Lead Temperature (soldering, 10s)............................ 260°C
ESD Rating⁽⁵⁾................................................. ESD Sensitive
Operating Ratings⁽⁴⁾
Supply Voltage (V_IN = V_AVIN = V_PVIN) ................. 2.7V to 5.5V
Enable Input Voltage (V_EN) .. ……………………….0V to V_IN
Feedback Voltage (V_FB) ...................................... 0.7V to V_IN
Junction Temperature Range (T_J).... ….−40°C ≤ T_J ≤ +85°C
Thermal Resistance
20-Pin 2.5mm × 3mm QFN (θ_JA) ........................ 50°C/W
Electrical Characteristics⁽⁶⁾
TA = 25°C; VIN = VEN = 3.6V; COUT = 22µF unless otherwise specified. Bold values indicate −40°C ≤ TJ ≤ +85°C, unless otherwise
specified.
Parameter
Condition
Min.
Typ.
Max.
Units
Supply Voltage Range
Undervoltage Lockout Threshold
Turn-On
2.7
5.5
V
2.40
2.53
2.65
V
Undervoltage Lockout Hysteresis
75
mV
Quiescent Current
IOUT = 0mA , VSNS > 1.2 × VOUT Nominal
33
Shutdown Current
VEN = 0V; VIN = 5.5V
0.1
Output Voltage Accuracy
VIN = 3.6V if VOUTNOM < 2.5V, ILOAD = 20mA
VIN = 5.5V if VOUTNOM ≥ 2.5V, ILOAD = 20mA
−2.5
Feedback Regulation Voltage
0.682
0.7
Current Limit
VSNS = 0.9 × VOUTNOM
2.5
3.3
Output Voltage Line Regulation
VIN = 3.6V to 5.5V, ILOAD = 20mA
0.3
20mA ≤ ILOAD ≤ 1A, VIN = 3.6V
Output Voltage Load Regulation
0.3
20mA ≤ ILOAD ≤ 1A, VIN = 5.5V
PWM Switch On-Resistance
ISW = 100mA PMOS
ISW = −100mA NMOS
0.13
Switching Frequency
IOUT = 120mA
4
Soft-Start (SS) Time
VOUT = 90%, CSS = 1nF
1000
Soft-Start (SS) Current
VSS = 0V
2.2
Power Good (PG) Threshold (Rising) % of VNOM
85
90
Notes:
3. Exceeding the absolute maximum ratings may damage the device.
4. The device is not guaranteed to function outside its operating ratings.
5. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5k in series with 100pF.
6. Specification for packaged product only
85
2
+2.5
0.717
95
µA
µA
%
V
A
%/V
%
Ω
MHz
µs
µA
%
May 15, 2014
3
Revision 1.1