MIC38300_13 Datasheet, PDF (4/15 Pages) Micrel Semiconductor – 3A High-Efficiency Low Dropout Regulator

Micrel, Inc.
MIC38300
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) ......................................................... 6V
Output Switch Voltage (V_SW) ............................................6V
LDO Output Voltage (V_OUT) .............................................. 6V
Logic Input Voltage (V_EN) .................................–0.3V to VIN
Power Dissipation .................................. Internally Limited⁽³⁾
Storage Temperature (T_S)...................–65°C ≤ T_J ≤ +150°C
ESD Rating⁽⁴⁾............................................................... 1.5kV
Operating Ratings⁽²⁾
Supply voltage (V_IN) ......................................... 3.0V to 5.5V
Junction Temperature Range ........... –40°C ≤ T_J ≤ +125°C
Enable Input Voltage (V_EN)..................................... 0V to V_IN
Package Thermal Resistance
4mm × 6mm MLF-28 (θ_JA) ................................ 24°C/W
Electrical Characteristics⁽⁵⁾
TA = 25°C with VIN = VEN = 5V; IOUT = 10mA, VOUT = 1.8V. Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted.
Parameter
Conditions
Min. Typ.
Max.
Units
Supply Voltage Range (AVIN, PVIN)
3.0
5.5
V
Undervoltage Lockout Threshold
Turn-on
2.85
V
UVLO Hysteresis
100
mV
Quiescent Current
IOUT = 0A, Not switching, open loop
1
mA
Turn-On Time
Shutdown Current
Feedback Voltage
VOUT to 95% of nominal
VEN = 0V
±2.5%
200 500
µs
30
50
µA
0.975 1 1.025 V
Feedback Current
5
nA
Dropout Voltage (VIN – VOUT)
Current Limit
Output Voltage Load Regulation
Output Voltage Line Regulation
Output Ripple
ILOAD = 2.2A; VOUT = 3V
VFB = 0.9 × VNOM
VOUT = 1.8V, 10mA to 2.2A
VOUT = 1.8V, VIN from 3.0V to 5.5V
ILOAD = 1.5A, COUTLDO = 20µF, COUTSW = 20µF
LPF = 25kΩ
0.85 1.2
V
3
5
A
0.3
1
%
0.35 0.5 %/V
2
mV
Over-Temperature Shutdown
150
°C
Over-Temperature Shutdown Hysteresis
Enable Input⁽⁶⁾
15
°C
Enable Input Threshold
Regulator enable
0.90
1
1.1
V
Enable Hysteresis
20 100 200 mV
Enable Input Current
0.03
1
µA
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA) / θJA. Exceeding the maximum allowable power
dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
5. Specification for packaged product only.
6. Enable pin should not be left open.
April 10, 2013
4
Revision 5.0