MIC2605_09 Datasheet, PDF (3/14 Pages) Micrel Semiconductor – 0.5A, 1.2MHz / 2MHz Wide Input Range Boost Regulator with Integrated Switch and Schottky Diode

Micrel, Inc.
MIC2605/6
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)............................................................. V_DD
Ambient Storage Temperature (T_s) ...........–65°C to +150°C
Lead Temperature (soldering 10sec)......................... 260°C
ESD Rating⁽³⁾ (MIC2605)................................................ 2kV
ESD Rating⁽³⁾ (MIC2606)............................................. 1.5kV
Operating Ratings⁽²⁾
Supply Voltage (V_IN).......................................... 4.5V 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⁽⁴⁾
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 5
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 6
V_FB
Feedback Voltage
(±2%)
1.225
(±3%) (over temperature)
1.212
I_FB
Feedback Input Current
Line Regulation
Load Regulation
V_FB = 1.25V
8V ≤ V_IN ≤ 14V, V_OUT = 18V
5mA ≤ I_OUT ≤ 40mA, V_OUT = 18V, Note 7
D_MAX
Maximum Duty Cycle
MIC2605
85
MIC2606
80
I_SW
Switch Current Limit
Note 7
0.5
V_SW
Switch Saturation Voltage
I_SW = 0.5A
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 (MIC2605)
1.02
Oscillator Frequency (MIC2606)
1.7
V_D
Schottky Forward Drop
ID = 1mA
ID = 150mA
I_RD
Schottky Leakage Current
V_R = 30V
V_OVP
Output Over-voltage Protection 15% Over programmed V_OUT
10
T_J
Over-temperature Threshold
Shutdown
Hysteresis
Typ
5.8
2.1
4.2
0.1
1.25
–550
0.04
0.8
600
0.01
20
1.2
2
450
850
0.1
15
150
10
Max
20
2.4
6
10
1.275
1.288
1
1.5
5
0.3
40
1.38
2.3
4
20
Units
V
V
V
mA
µA
V
V
nA
%
%
%
%
A
mV
µA
V
V
µA
MHz
MHz
mV
mV
µA
%
°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. IC devices are inherently ESD sensitive. Handling precautions required. Human body model rating: 1.5k in series with 100pF.
4. Specification for packaged product only.
5. Connect V_DD pin to V_IN pin when V_IN ≤ 7V.
6. I_SD = I_VIN.
September 2009
3
M9999-090909-B