参数资料
型号: ADM00427
厂商: Microchip Technology
文件页数: 4/32页
文件大小: 0K
描述: BOARD EVALUATION MCP16323
标准包装: 1
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 3V
电流 - 输出: 3A
输入电压: 6 ~ 18 V
稳压器拓扑结构: 降压
频率 - 开关: 1MHz
板类型: 完全填充
已供物品:
已用 IC / 零件: MCP16323
MCP16323
DC CHARACTERISTICS (CONTINUED)
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
PFM Mode Feedback
Comparator Threshold
Feedback Input Bias
Current
Sym
V FB-PFM
I FB
Min
Typ
V OUT + 1%
100
Max
Units
V
nA
Conditions
EN Input Characteristics
EN Input Logic High
EN Input Logic Low
EN Input Hysteresis
V IH
V IL
V EN-HYST
2.2
480
0.8
V
V
mV
EN Input Leakage Current
Soft-Start Time
I ENLK
t SS
3.5
-1.5
4
μA
μA
ms
V EN = 5V
V EN = 0V
Switching Characteristics
Switching Frequency
f SW
0.9
1
1.1
MHz Open Loop V FB Low
Maximum Duty Cycle
DC MAX
95
97
99
%
Open Loop V FB Low
Minimum Duty Cycle
7
%
NMOS Low-Side
Switch On Resistance
NMOS High-Side
Low-Side R DS(ON)
High-Side
120
180
m Ω
m Ω
Switch On Resistance
R DS(ON)
NMOS High-Side
Switch Current Limit
I N(MAX)
3.4
3.8
4.4
A
MCP16323
PG Output Characteristics
PG Low-level
Output Voltage
PG High-Level Output
Leakage Current
PG Release Timer
PG IL
I PGLK
t PG
0.5
10
0.01
V
μA
ms
I PG = -0.3 mA
V PG = 5V
V OUT Undervoltage
Threshold
V OUT-UV
91% V OUT 93% V OUT
95% V OUT
V OUT Undervoltage
Hysteresis
V OUT Overvoltage Thresh-
old
V OUT Overvoltage
Hysteresis
V OUT-UV_HYST
V OUT-OV
V OUT-OV_HYST
1.5% V OUT
103% V OU
T
1% V OUT
Thermal Characteristics
Thermal Shutdown
Die Temperature
Die Temperature
Hysteresis
T SD
T SDHYS
170
10
°C
°C
Note 1:
2:
Regulator SW pin is forced off for 240 ns every 8 cycles to ensure the BOOST cap is replenished.
As a result of the maximum duty cycle limitations, 3A of output current for 5V output conditions may not
regulate the voltage. External component selection may have an impact on this. A minimum input voltage
of 6.5V is recommended.
DS22284A-page 4
? 2011 Microchip Technology Inc.
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