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参数资料
| 型号： | MCP16321T-500E/NG |
| 厂商： | Microchip Technology |
| 文件页数： | 3/34页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 5V 1A 16-VQFN |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V |
| 输入电压： | 6 V ~ 24 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VFQFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 16-QFN（3x3） |
| 其它名称： | MCP16321T-500E/NGDKR |
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MCP16321/2
1.0
ELECTRICAL
CHARACTERISTICS
? Notice: Stresses above those listed under “Absolute
Maximum Ratings” may cause permanent damage to
the device. This is a stress rating only and functional
Absolute Maximum Ratings?
V IN .................................................................... -0.3V to 26.4V
SW ...................................................................... -1V to 26.4V
BOOST – GND ........................................... -0.3V to (V IN +6V)
operation of the device at those or any other conditions
above those indicated in the operational sections of this
specification is not intended. Exposure to maximum
rating conditions for extended periods may affect
device reliability.
EN,V FB , PG Voltage.............................................. -0.3V to 6V
Continuous Total Power Dissipation .......................................
...................................................See Thermal Characteristics
Storage Temperature ....................................-65°C to +150°C
Operating Junction Temperature...................-40°C to +125°C
ESD Protection On All Pins:
HBM ......................................................................... 3 kV
MM ..........................................................................200V
DC CHARACTERISTICS
Electrical Characteristics: Unless otherwise indicated, T A = +25°C, V IN = 12V, V OUT = 3.3V, I OUT = 300 mA,
L = 4.7 μH, C OUT = 2x22 μF, C IN = 2x10 μF. Boldface specifications apply over the T J range of -40°C to +125°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
V IN Supply Voltage
Input Voltage
V IN
6.0
—
24
V
Quiescent Current
(Switching)
Quiescent Current
(Non-Switching)
I Q
I Q
—
—
5.2
2.3
—
—
mA
mA
I OUT = 0 mA
Closed Loop in
Overvoltage
I OUT = 0 mA
Quiescent Current -
Shutdown
I Q
—
5
10
μA
EN = 0
V IN Undervoltage Lockout
Undervoltage Lockout Start
Undervoltage Lockout
Hysteresis
UVLO STRT
UVLO HYS
5.5
—
5.75
0.65
6.0
—
V
V
V IN Rising
Non-Switching
Output Characteristics
Maximum Output Current
I OUT
1
—
—
A
V IN = 6V to 24V
MCP16321
Maximum Output Current
I OUT
2
—
—
A
V IN = 6V to 24V
MCP16322
Output Voltage Adjust Range
V OUT
0.9
—
5.0
V
Output Voltage Tolerance
in PWM Mode
V OUT-PWM
V OUT - 2%
V OUT
V OUT + 2%
V
I OUT = 1A
Output Voltage Tolerance
in PFM Mode
V OUT-PFM
V OUT - 1% V OUT + 1% V OUT + 3.5%
V
I OUT = 0A
Feedback Voltage
Feedback Reference
Tolerance
PFM Mode Feedback
Comparator Threshold
Feedback Input Bias
Current
V FB
V FB-TOL
V FB-PFM
I FB
0.886
-1.5
—
—
0.9
—
V OUT + 1%
100
0.914
1.5
—
—
V
%
V
nA
Note 1:
Regulator SW pin is forced off for 240 ns every 8 cycles to ensure the BOOST cap is replenished.
? 2011 Microchip Technology Inc.
DS22285A-page 3
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