MIC2601 Datasheet, PDF (3/13 Pages) Micrel Semiconductor – 1.2A, 1.2MHz/2MHz Wide Input Range Integrated Switch Boost Regulator

Micrel, Inc.
MIC2601/2
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) .......................................................22V
Switch Voltage (V_SW)....................................... –0.3V to 40V
Enable Voltage (V_EN)......................................... –0.3V to V_IN
FB Voltage (V_FB)...............................................................6V
Ambient Storage Temperature (T_s) ...........–65°C to +150°C
Lead Temperature (soldering 10sec)......................... 260°C
ESD Rating..................................................................... 2kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN).......................................... 4.5V to 20V
Enable Voltage (V_EN)............................................ 0V to 20V
Junction Temperature (T_J) ........................ –40°C to +125°C
Junction Thermal Resistance
2mm x 2mm MLF-8 (θ_JA) ...................................90°C/W
2mm x 2mm MLF-8 (θ_JC) ...................................45°C/W
Electrical Characteristics⁽³⁾
T_A = 25°C, V_IN = V_EN = 12V; unless otherwise noted. Bold values indicate –40°C ≤ T_J ≤ +125°C.
Symbol Parameter
Condition
Min
V_IN
Input Voltage Range
4.5
V_DD
Internal Regulated Voltage
Note 4
V_ULVO
Under-voltage Lockout
For V_DD
1.8
I_Q
Quiescent Current
V_FB = 2V (not switching)
I_SD
Shutdown Current
V_EN = 0V, Note 5
V_FB
Feedback Voltage
(±2%)
1.235
(±3%) (over temperature)
1.222
I_FB
Feedback Input Current
V_FB = 1.25V
Line Regulation
Load Regulation
8V ≤ V_IN ≤ 14V, V_OUT = 18V
5mA ≤ I_OUT ≤ 400mA, V_OUT = 18V, Note 6
SS_R
Internal Soft Start Resistor
D_MAX
Maximum Duty Cycle
MIC2601
85
MIC2602
80
I_SW
Switch Current Limit
Note 6
1.2
V_SW
Switch Saturation Voltage
I_SW = 1.2A
I_SW
Switch Leakage Current
V_EN = 0V, V_SW = 18V
V_EN
Enable Threshold
Turn ON
1.5
Turn OFF
I_EN
Enable Pin Current
V_EN = 12V
f_SW
Oscillator Frequency (MIC2601)
1.02
Oscillator Frequency (MIC2602)
1.7
V_OVP
Output Over-voltage Protection 15% Over programmed V_OUT (rising)
10
T_J
Over-temperature Threshold
Shutdown
Hysteresis
Typ
6.0
2.1
4.2
0.08
1.26
–550
0.04
0.1
15
1.7
500
0.01
18.5
1.12
1.92
15
150
10
Max
20
2.4
6
2
1.285
1.298
1
5
0.3
40
1.38
2.3
20
Units
V
V
V
mA
µA
V
V
nA
%
%
kΩ
%
%
A
mV
µA
V
V
µA
MHz
MHz
%
°C
°C
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.
2. The device is not guaranteed to function outside its operating rating.
3. Specification for packaged product only.
4. Connect V_DD pin to V_IN pin when V_IN ≤ 7V.
5. I_SD = I_VIN.
6. Guaranteed by design.
September 2009
3
M9999-090909-A