参数资料
| 型号： | MIC2199BML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 3/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 12-MLF |
| 标准包装： | 5,000 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 85% |
| 电源电压： | 4.5 V ~ 32 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 12-VFDFN 裸露焊盘，12-MLF? |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2199BMLTR MIC2199BMLTR-ND |
Micrel, Inc.
Absolute Maximum Ratings (Note 1)
Analog Supply Voltage (V IN )........................................ +34V
Digital Supply Voltage (V DD ).......................................... +7V
Driver Supply Voltage (B ST ) ...................................V IN + 7V
Sense Voltage (V OUT , C SH ) ...............................7V to –0.3V
Enable Pin Voltage (V EN/UVLO ) ....................................... V IN
Power Dissipation (P D )
4 × 4 MLF? ..................................665mW @ T A = 85°C
Ambient Storage Temperature (T S ) .......... –65°C to +150°C
ESD, Note 3
Electrical Characteristics (Note 4)
MIC2199
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 ( θ JA ) ............................................... 60°C/W
V IN = V EN = 12V; T J = 25°C, unless noted, bold values indicate –40°C ≤ T J ≤ +125°C
Parameter Condition
Min
Typ
Max
Units
Feedback Voltage Reference
Feedback Voltage Reference
Feedback Voltage Reference
Feedback Bias Current
Output Voltage Range
Output Voltage Line Regulation
Output Voltage Load Regulation
Input and V DD Supply
Quiescent Current
Shutdown Quiescent Current
Digital Supply Voltage (V DD )
Undervoltage Lockout
Enable/UVLO
Enable Input Threshold
(±1%)
(±2%)
4.5V < V IN < 32V, 0 < (V CSH – V OUT ) < 60mV (±3%)
V IN = 4.5V to 32V, V CSH – V OUT = 60mV
25mV < (V CSH – V OUT ) < 60mV
excluding external MOSFET gate drive current
V EN/UVLO = 0V
I L = 0mA to 5mA
V IN upper threshold (turn-on threshold)
V IN lower threshold (turn-off threshold)
0.792
0.784
0.776
0.8
4.7
3.95
0.6
0.8
10
0.03
0.5
1.6
0.1
5.0
4.25
4.1
1.1
0.808
0.816
0.824
6
2.5
5
5.3
4.4
1.6
V
V
V
nA
V
%/V
%
mA
μA
V
V
V
V
UVLO Threshold
Enable Input Current
Current Limit
V EN/UVLO = 5V
2.2
2.5
0.1
2.8
5
V
μA
Current Limit Threshold Voltage
Error Amplifier
(V CSH – V OUT )
55
75
95
mV
Transconductance Error Amplifier GM
0.2
mS
Oscillator Section
Oscillator Frequency
270
300
330
kHz
Maximum Duty Cycle
Minimum On-Time
Frequency Foldback Threshold
Foldback Frequency
measured at V OUT pin
80
0.25
85
170
0.40
75
200
0.55
%
ns
V
kHz
Gate Drivers
Rise/Fall Time
Output Driver Impedance
Driver Non-Overlap Time
C L = 3000pF
source
sink
60
5
3.5
80
8.5
6
ns
Ω
Ω
ns
Note 1.
Note 2.
Note 3.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD protected; however, handling precautions are recommended. Human body model, 1.5k in series with 100pF.
Note 4. Specification for packaged product only.
January 2010
3
M9999-011310
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