MIC2101_13 Datasheet, PDF (4/36 Pages) Micrel Semiconductor – 38V, Synchronous Buck Controllers Featuring Adaptive On-Time Control

Micrel, Inc.
MIC2101/02
Absolute Maximum Ratings⁽¹⁾
V_IN ................................................................ 0.3V to +40V
V_DD, V_PVDD........................................................ 0.3V to +6V
V_SW, V_FREQ, V_ILIM, V_EN............................ 0.3V to (V_IN +0.3V)
V_BST to V_SW ........................................................ 0.3V to 6V
V_BST ................................................................ 0.3V to 46V
V_PG ..................................................... 0.3V to (V_DD + 0.3V)
V_FB ..................................................... 0.3V to (V_DD + 0.3V)
PGND to AGND............................................ 0.3V to +0.3V
Junction Temperature .............................................. +150°C
Storage Temperature (T_S)......................... 65qC to +150qC
Lead Temperature (soldering, 10s)............................ 260°C
ESD Rating⁽2⁾ ................................................ ESD Sensitive
Operating Ratings⁽³⁾
Supply Voltage (V_IN) .......................................... 4.5V to 38V
Enable Input (V_EN) .................................................. 0V to V_IN
V_SW, V_FREQ, V_ILIM, V_EN ............................................. 0V to V_IN
Junction Temperature (T_J) ........................ 40qC to +125qC
Junction Thermal Resistance
3mm x 3mm QFN-16 (T_JA) ....................................50.8°C/W
3mm x 3mm QFN-16 (T_JC) ......................25.3°C/W
Electrical Characteristics⁽4⁾
VIN = 12V, VOUT =1.2V; VBST – VSW = 5V; TA = 25°C, unless noted. Bold values indicate ƒ&”7J ”ƒ&
Parameter
Condition
Min. Typ.
Power Supply Input
Input Voltage Range (VIN)⁽⁵⁾
4.5
Quiescent Supply Current (MIC2101)
VFB = 1.5V
400
Quiescent Supply Current (MIC2102)
VFB = 1.5V
2.1
Shutdown Supply Current
SW unconnected, VEN = 0V
0.1
VDD Supply
VDD Output Voltage
VIN = 7V to 38V, IDD = 10mA
4.8
5.2
VDD UVLO Threshold
VDD rising
3.8
4.2
VDD UVLO Hysteresis
400
Load Regulation
Reference
IDD = 0 to 40mA
0.6
2
Feedback Reference Voltage
TJ = 25°C (±1.0%)
40°C ”TJ ”ƒC (±2%)
0.792 0.8
0.784 0.8
FB Bias Current
VFB = 0.8V
5
Enable Control
EN Logic Level High
1.8
EN Logic Level Low
EN Hysteresis
200
EN Bias Current
VEN = 12V
6
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kŸ in series with 100pF.
3. The device is not guaranteed to function outside operating range.
4. Specification for packaged product only.
5. The application is fully functional at low VDD (supply of the control section) if the external MOSFETs have low voltage VTH.
Max.
38
750
3
10
5.4
4.6
3.6
0.808
0.816
500
0.6
30
Units
V
μA
mA
μA
V
V
mV
%
V
nA
V
V
mV
μA
November 13, 2013
4
Revision 2.0