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MIC2208 Datasheet(PDF) 3 Page - Micrel Semiconductor

Part No. MIC2208
Description  3mmx3mm 1MHz 3A PWM Buck Regulator
Download  19 Pages
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2208 Datasheet(HTML) 3 Page - Micrel Semiconductor

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Micrel, Inc.
MIC2208
Absolute Maximum Ratings
(1)
Supply Voltage (VIN) ...............................-0.3V to +6V
Output Switch Voltage (VSW) .....................-1V to +6V
Output Switch Current (ISW) ................................. 10A
Logic Input Voltage (VEN)......................... -0.3V to VIN
Storage Temperature (Ts)................ -60°C to +150°C
ESD Rating
(3) ............................................2KV (HBM)
Operating Ratings
(2)
Supply Voltage (VIN)............................+2.7V to +5.5V
Logic Input Voltage (VEN,VLOWQ) .................. 0V to VIN
Junction Temperature (TJ) .............. –40°C to +125°C
Junction Thermal Resistance
3mmx3mm MLF-12L (
θJA) ....................... 60°C/W
Electrical Characteristics
(4)
VIN = VEN = 3.6V; L = 1µH; COUT = 4.7µF; TA = 25°C, unless noted. Bold values indicate –40°C< TJ < +125°C
Parameter
Condition
Min
Typ
Max
Units
Supply Voltage Range
2.7
5.5
V
Under-Voltage Lockout
Threshold
(turn-on)
2.45
2.55
2.65
V
UVLO Hysteresis
100
mV
Quiescent Current
VFB = 0.9 * VNOM (not switching)
720
950
µA
Shutdown Current
VEN = 0V
0.1
5
µA
[Adjustable] Feedback
Voltage
± 1%
± 2% (over temperature)
0.99
0.98
1
1.01
1.02
V
FB pin input current
1
100
nA
Current Limit in PWM Mode
VFB = 0.9 * VNOM
8
10
A
Output Voltage Line
Regulation
VOUT > 2.2V; VIN = VOUT+500mV to 5.5V; ILOAD= 20mA
VOUT < 2.2V; VIN = 2.7V to 5.5V; ILOAD= 20mA
0.13
%
Output Voltage Load
Regulation
20mA < ILOAD < 3A
0.2
1
%
PWM Switch ON-
Resistance
ISW = 50mA VFB = 0.7VFB_NOM (High Side Switch)
95
200
300
m
Oscillator Frequency
0.9
1
1.1
MHz
Enable Threshold
0.5
0.85
1.3
V
Enable Input Current
0.1
2
µA
Soft Start Time
VOUT =10% to VOUT=90%
450
µs
Over-Temperature
Shutdown
160
°C
over-Temperature
Hysteresis
20
°C
Power Good Range
±7
±10
%
Power Good Resistance
IPGOOD
145
200
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model: 1.5k
Ω in series with 100pF.
4. Specification for packaged product only.
September 2005
3
M9999-092905
www.micrel.com


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