MIC2142_07 Datasheet, PDF (3/17 Pages) Micrel Semiconductor – Micropower Boost Converter

Micrel, Inc.
MIC2142
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_CC)......................................................18V
Switch Voltage (V_SW)......................................................24V
Enable Pin Voltage (V_EN)⁽³⁾.............................................18V
Feedback Voltage (V_FB)
Adjustable Version.....................................................8V
Ambient Storage Temperature (T_s) ...........–65°C to +150°C
ESD Rating⁽⁴⁾
Operating Ratings⁽²⁾
Supply Voltage (V_CC)......................................... 2.2V to 16V
Enable Pin Voltage (V_EN)⁽³⁾................................... 0V to 16V
Switch Voltage (V_SW)...................................................... 22V
Ambient Temperature (T_A) .......................... –40°C to +85°C
Junction Temperature Range (T_J)............. –40°C to +125°C
Package Thermal Impedance
SOT23-5 (θ_JA) ..................................................220°C/W
Electrical Characteristics
V_CC = 3.6V; V_OUT = 5V; I_OUT = 200mA; T_A = 25°C, bold values indicate –40°C< T_J < +125°C, unless noted.
Parameter
Condition
Min
Typ
Max
Units
Input Voltage
Quiescent Current
Feedback Voltage (VFB)
Comparator Hysteresis
Feedback Input Bias Current,
Note 5
Enable Input Voltage
Enable Input Current
Load Regulation
Line Regulation
SW on Resistance
Switch Leakage Current
Oscillator Frequency
Duty Cycle
V_EN = ON , V_FB = 2.2V (adjustable)
V_EN = ON , V_OUT(NOMINAL) + 1V (MIC2142-5.0)
V_EN = OFF (shutdown)
(±2%)
(±3%)
adjustable
fixed
V_IH (turn on)
V_IL (turn off)
200µA ≤ I_OUT ≤ 20mA
2.2V ≤ V_CC ≤ 16V; I_OUT = 4mA (adjustable)
2.2V ≤ V_CC ≤ 4.5V; I_OUT = 4mA (MIC2142-5.0)
I_SW = 100mA, V_CC = 2.5V
V_EN = OFF, V_SW = 12V
2.2
1.254
1.241
0.6V_CC
–1
295
50
85
85
0.1
1.28
18
30
20
0.55V_CC
1.1
0.01
0.2
0.25
0.25
5
0.05
330
57
16
125
125
2
1.306
1.312
0.8
1
1
365
65
V
µA
µA
µA
V
V
mV
nA
µA
V
V
µA
%V_OUT
%/V
%/V
Ω
µA
kHz
%
Notes:
1. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating
the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, T_J(Max), the
junction-to-ambient thermal resistance, θ_JA, and the ambient temperature, T_A. The maximum allowable power dissipation will result in excessive die
temperature, and the regulator will go into thermal shutdown. The θ_JA of the power SOT23-5 is 220°C/W mounted on a PC board.
2. The device is not guaranteed to function outside its operating rating.
3. V_EN must be ≤ V_IN.
4. Devices are ESD sensitive. Handling precautions recommended.
5. The maximum suggested value of the programming resistor, whose series resistance is measured from feedback to ground, is 124kΩ. Use of larger
resistor values can cause errors in the output voltage due to the feedback input bias current.
October 2007
3
M9999-102507