MIC2145_05 Datasheet, PDF (3/15 Pages) Micrel Semiconductor – High Efficiency 2.5W Boost Converter

MIC2145
Absolute Maximum Ratings (Note 1)
Supply Voltage (V_DD) .................................................... 18V
Switch Voltage (V_SW) .................................................... 18V
Feedback Voltage (V_FB) ................................................ 18V
Switch Current (I_SW) ........................................................ 2A
Enable Voltage(V_EN), Note 5 ........................................ 18V
RSET Voltage (V_RSET) .................................................... 6V
ESD Rating, Note 3 ...................................................... 2kV
Ambient Storage Temperature(T_S) .......... –65°C to +150°C
Micrel, Inc.
Operating Ratings (Note 2)
Supply Voltage (V_DD) ....................................... 2.4V to 16V
Switch Voltage (V_SW) .................................................... 16V
Ambient Temperature (T_A) ......................... –40°C to +85°C
Junction Temperature (T_J) ....................... –40°C to +125°C
Package Thermal Resistance MSOP
θ_JA (MSOP-8) .................................................... 206°C/W
θ_JA (3mm×3mm MLF-10) .................................... 60°C/W
Electrical Characteristics (Note 6)
V_DD = 10V, V_OUT = 10V, I_OUT = 100mA; T_J =25°C, unless otherwise noted, bold values indicate –40°C ≤ T_J ≤ 125°C.
Parameter
Condition
Min Typ Max
Supply Voltage
2.4
16
Shutdown Current
Quiescent Current
Feedback Voltage Reference
EN = 0.3V, V_DD = 10V, V_FB=1.35V
EN = V_DD, V_DD = 10V, V_FB = 1.35V
(±2%)
1.058
0.5
200
1.08
5
300
1.102
(±3%)
1.048
1.112
Comparator Hysteresis
18
Feedback Input Current
V_FB=1.35V
40
Peak Current Limit
R_SET=200Ω, V_DD = 3.6V, Note 4
0.8
R_SET=1kΩ, V_DD = 10V, Note 4
0.9
Current Limit Comparator
500
Propagation Delay
Switch On-Resistance
Maximum Off Time
I_SW = 150mA, V_DD = 3.0V
I_SW = 1.2A, V_DD = 10V
500 750
250 400
1000
Enable Input Voltage
Logic Low (turn-off)
1.1
0.7
Logic High (turn-on)
1.5
1.1
Enable Input Current
Soft Start Current
V_EN = 0V
V_EN = 2V
V_EN = 2V, V_DD=3.0V
–1 0.01
1
–1 0.01
1
–8
–12 –16
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5KΩ in series with 100pF.
The current is measured in a DC mode. Actual peak switching current will be higher due to internal propagation delay of the circuit.
V_EN ≤ V_DD.
Specification for packaged product only.
Units
V
µA
µA
V
V
mV
nA
A
A
ns
mΩ
mΩ
ns
V
V
µA
µA
µA
April 2005
3
M9999-042205