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MIC2199BML 数据表(PDF) 3 Page - Micrel Semiconductor

部件名 MIC2199BML
功能描述  300kHz 4mm 횞 4mm Synchronous Buck Converter
PDF  15 Pages
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制造商  MICREL [Micrel Semiconductor]
网页  http://www.micrel.com
标志 MICREL - Micrel Semiconductor

MIC2199BML 数据表(HTML) 3 Page - Micrel Semiconductor

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November 2004
3
MIC2199
MIC2199
Micrel
Electrical Characteristics (Note 4)
V
IN = VEN = 12V; TJ = 25°C, unless noted, bold values indicate –40°C ≤ TJ ≤ +125°C
Parameter
Condition
Min
Typ
Max
Units
Feedback Voltage Reference
(±1%)
0.792
0.8
0.808
V
Feedback Voltage Reference
(±2%)
0.784
0.816
V
Feedback Voltage Reference
4.5V < V
IN < 32V, 0 < (VCSH – VOUT) < 60mV (±3%)
0.776
0.824
V
Feedback Bias Current
10
nA
Output Voltage Range
0.8
6
V
Output Voltage Line Regulation
V
IN = 4.5V to 32V, VCSH – VOUT = 60mV
0.03
%/V
Output Voltage Load Regulation
25mV < (V
CSH – VOUT) < 60mV
0.5
%
Input and V
DD Supply
Quiescent Current
excluding external MOSFET gate drive current
1.6
2.5
mA
Shutdown Quiescent Current
V
EN/UVLO = 0V
0.1
5
µA
Digital Supply Voltage (V
DD)IL = 0mA to 5mA
4.7
5.0
5.3
V
Undervoltage Lockout
V
IN upper threshold (turn-on threshold)
4.25
4.4
V
V
IN lower threshold (turn-off threshold)
3.95
4.1
V
Enable/UVLO
Enable Input Threshold
0.6
1.1
1.6
V
UVLO Threshold
2.2
2.5
2.8
V
Enable Input Current
V
EN/UVLO = 5V
0.1
5
µA
Current Limit
Current Limit Threshold Voltage
(V
CSH – VOUT)
55
75
95
mV
Error Amplifier
Transconductance Error Amplifier GM
0.2
mS
Oscillator Section
Oscillator Frequency
270
300
330
kHz
Maximum Duty Cycle
80
85
%
Minimum On-Time
170
200
ns
Absolute Maximum Ratings (Note 1)
Analog Supply Voltage (V
IN) ....................................... +34V
Digital Supply Voltage (V
DD) ......................................... +7V
Driver Supply Voltage (B
ST) .................................. VIN + 7V
Sense Voltage (V
OUT, CSH) ............................. 7V to –0.3V
Enable Pin Voltage (V
EN/UVLO) ...................................... VIN
Power Dissipation (P
D)
4×4 MLF™ ................................. 665mW @ TA = 85°C
Ambient Storage Temperature (T
S) ......... –65°C to +150°C
ESD, Note 3
Operating Ratings (Note 2)
Analog Supply Voltage (V
IN) ........................ +4.5V to +32V
Output Voltage Range (V
OUT) ........................ +0.8V to +6V
Junction Temperature (T
J) ....................... –40°C to +125°C
Package Thermal Resistance
4×4 MLF-12L (θJA) .............................................. 60°C/W



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