MIC2165 Datasheet, PDF (4/27 Pages) Micrel Semiconductor – Adaptive On-Time DC-DC Controller Featuring Hyper Light Load

Micrel, Inc.
MIC2165
On Timer
Switching Frequency
450
600
750
kHz
Minimum Off-Time
200
300
400
ns
Maximum Duty Cycle
Results from Switching Frequency and Minimum
Off-Time
82
%
Minimum Duty Cycle
VFB = 1.0V
0
%
Bottom FET Active
Zero Crossing Comparator Offset
-16
0.5
16
mV
Short Current Protection
Current Limit Threshold
Short Circuit Current
FET Drives
VFB = 0.79V
VFB = 0V
98
133 182
mV
24
48
72
mV
DH, DL Output Low Voltage
DH, DL Output High Voltage
DH On-Resistance
DL On-Resistance
SW, BST Leakage Current
ISINK = 10mA
ISOURCE = 10mA
Pull Up, ISOURCE = 20mA
Pull Down, ISINK = 20mA
Pull Up, ISOURCE = 20mA
Pull Down, ISINK = 20mA
VSW = VBST = 0
0.1
V
VDD-0.1V
V
or
VBST-0.1V
2
3
Ω
1.5
3
Ω
2
3
Ω
1
2
Ω
30
µA
Power Good
Power Good Threshold Voltage
Power Good Hysteresis
Power Good Delay Time
Power Good Low Voltage
Sweep VFB from Low to High
Sweep VFB from High to Low
Sweep VFB from Low to High
VFB<0.9 × VNOM, IPGOOD = 1mA
85
90
95
%VOUT
6.0
%VOUT
100
µs
70
200
mV
Thermal Protection
Over-temperature Shutdown
Over-temperature Shutdown
Hysteresis
TJ Rising
160
°C
15
°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. 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, 1.5k in series with 100pF.
5. Enable pin should not be left open.
June 2010
4
M9999-060810-D