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| 型号： | MCP1824ST-3002E/DB |
| 厂商： | Microchip Technology |
| 文件页数： | 8/34页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3V .3A SOT223-3 |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3V |
| 输入电压： | 最高 6V |
| 电压 - 压降（标准）： | 0.2V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-261-4，TO-261AA |
| 供应商设备封装： | SOT-223-3 |
| 包装： | 标准包装 |
| 产品目录页面： | 666 (CN2011-ZH PDF) |
| 其它名称： | MCP1824ST-3002E/DBDKR |
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MCP1824/MCP1824S
AC/DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise noted, V IN = V OUT(MAX) + V DROPOUT(MAX) , Note 1 , V R = 1.8V for Adjustable Output,
I OUT = 1 mA, C IN = C OUT = 4.7 μF (X7R Ceramic), T A = +25°C.
Boldface type applies for junction temperatures, T J ( Note 7 ) of -40°C to +125°C
Parameters
Maximum Pulsed Output Duty
Sym
I PULSE_DUTY
Min
—
Typ
—
Max
60
Units
%
Conditions
V IN = 2.1V to 6.0V,
Cycle
V R = 0.8V to 5.0V,
I OUT = 500 mA,
Period < 10 ms
Maximum Pulsed Output Period
I PULSE_PERIOD
—
—
10
ms
V IN = 2.1V to 6.0V
V R = 0.8V to 5.0V,
I OUT = 500 mA
Adjust Pin Characteristics (Adjustable Output Only)
Adjustable Output Voltage
V OUT_ADJ
0.8
—
5.5
V
Range
Adjust Pin Reference Voltage
V ADJ
0.402
0.410
0.418
V
V IN = 2.1V to V IN = 6.0V,
I OUT = 1 mA
Adjust Pin Leakage Current
Adjust Temperature Coefficient
I ADJ
TCV OUT
-10
—
±0.01
40
+10
—
nA
ppm/°C
V IN = 6.0V, V ADJ = 0V to 6V
Fixed-Output Characteristics (Fixed Output Only)
Voltage Regulation
V OUT
V R - 2.5%
V R ±0.5% V R + 2.5%
V
Power Good Characteristics
PWRGD Input Voltage Operat-
ing Range
V PWRGD_VIN
1.0
1.2
—
—
6.0
6.0
V
T A = +25°C
T A = -40°C to +125°C
For V IN < 2.1V, I SINK = 100 μA
PWRGD Threshold Voltage
V PWRGD_TH
%V OUT
Falling Edge
(Referenced to V OUT )
89
92
95
V OUT < 2.5V Fixed,
V OUT = Adj.
90
92
94
V OUT >= 2.5V Fixed
PWRGD Threshold Hysteresis
V PWRGD_HYS
1.0
2.0
3.0
%V OUT
PWRGD Output Voltage Low
V PWRGD_L
—
0.05
0.4
V
I PWRGD SINK = 1.2 mA,
ADJ = 0V
PWRGD Output Current Sink
I PWRGD
1.2
6.0
—
mA
V PWRGD = 0.200V
Capability
PWRGD Leakage
PWRGD Time Delay
P WRGD _ LK
T PG
—
—
1
110
—
—
nA
μs
V PWRGD = V IN = 6.0V
Rising Edge
R PULLUP = 10 k Ω
Note 1:
2:
3:
4:
5:
6:
7:
The minimum V IN must meet two conditions: V IN ≥ 2.1V and V IN ≥ V OUT(MAX) + V DROPOUT(MAX).
V R is the nominal regulator output voltage for the fixed cases. V R = 1.2V, 1.8V, etc. V R is the desired set point output
voltage for the adjustable cases. V R = V ADJ * ((R 1 /R 2 )+1). Figure 4-1 .
TCV OUT = (V OUT-HIGH – V OUT-LOW ) *10 6 / (V R * Δ Temperature). V OUT-HIGH is the highest voltage measured over the
temperature range. V OUT-LOW is the lowest voltage measured over the temperature range.
Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is
tested over a load range from 1 mA to the maximum specified output current.
Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its
nominal value that was measured with an input voltage of V IN = V OUT(MAX) + V DROPOUT(MAX) .
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction
temperature and the thermal resistance from junction to air. (i.e., T A , T J , θ JA ). Exceeding the maximum allowable power
dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained
junction temperatures above 150°C can impact device reliability.
The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the
desired junction temperature. The test time is small enough such that the rise in the junction temperature over the
ambient temperature is not significant.
DS22070A-page 8
2007 Microchip Technology Inc.
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