MIC2250_11 Datasheet, PDF (3/14 Pages) Micrel Semiconductor – High-Efficiency Low EMI Boost Regulator

Micrel, Inc.
MIC2250
Absolute Maximum Ratings⁽¹⁾
Supply Voltage (V_IN) .........................................................6V
Switch Voltage (V_SW)....................................... –0.3V to 34V
Enable Voltage (V_EN)......................................... –0.3V to V_IN
FB Voltage (V_FB)...............................................................6V
Switch Current (I_SW) ......................................................3.5A
Ambient Storage Temperature (Ts) ..........–65°C to +150°C
ESD Rating⁽⁴⁾................................................. ESD Sensitive
Operating Ratings⁽²⁾
Supply Voltage (V_IN)......................................... 2.5V to 5.5V
Enable Voltage (V_EN).............................................. 0V to V_IN
Junction Temperature (T_J)⁽³⁾ ..................... –40°C to +125°C
Junction Thermal Resistance
2mm x 2mm MLF^®-8 (θ_JA)..................................90°C/W
Electrical Characteristics⁽⁵⁾
V_IN = V_EN = 3.6V; V_DITH = 0V; V_OUT = 15V; I_OUT = 40mA; T_A = 25°C, unless otherwise noted. Bold values indicate
–40°C ≤ T_J ≤ +85°C.
Symbol Parameter
Condition
Min Typ Max
Units
V_IN
V_ULVO
I_Q
I_SD
V_FB
Input Voltage Range
Under-voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
I_FB
Feedback Input Current
PFM Operation
V_IN rising
V_FB = 1.5V (not switching)
V_EN = 0V, Note 6
–40°C ≤ T_J ≤ +85°C
V_FB = 1.24V
2.5
5.5
V
1.8
2
2.4
V
52
80
µA
0.1
1
µA
1.20 1.24 1.277
V
1.19
1.29
V
10
nA
Tss
Soft Start time
1
ms
t_SW
D_MAX
t_DITH
I_SW
R_ON
I_SW
V_EN,
V_DITH
Switch Off-time
Maximum Duty Cycle
Off-time Dithering
Line Regulation
Load Regulation
Switch Current Limit
Switch ON-resistance
Switch Leakage Current
Logic Input Thresholds
V_IN = 3.6V
V_DITH = 3.6V. Percentage from nominal.
3V ≤ V_IN ≤ 5V
1mA ≤ I_OUT ≤ 40mA
Note 7
I_SW = 200mA
V_EN = 0V, V_SW = 10V
Turn ON
Turn OFF
1.6
µs
75
87
%
±20
%
0.3
2
%
0.1
2
%
0.9
2
A
0.5
1
Ω
0.01
5
µA
1.5
V
0.4
V
I_EN
Enable Pin Current
V_EN = V_IN = 5.0V
T
Thermal Shutdown Threshold
0.1
2
µA
130
°C
Hysteresis
15
°C
Notes:
1. Absolute maximum ratings indicate limits beyond which damage to the component may occur.
2. The device is not guaranteed to function outside its operating rating.
3. 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.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
5. Specification for packaged product only.
6. I_SD = I_VIN.
7. Guaranteed by design.
April 2011
3
M9999-041811-B