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| 型号： | MCP1602-330I/MF |
| 厂商： | Microchip Technology |
| 文件页数： | 5/26页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 3.3V 0.5A 8DFN |
| 标准包装： | 120 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 2MHz |
| 电流 - 输出： | 500mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VDFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 8-DFN-EP（3x3） |
| 产品目录页面： | 668 (CN2011-ZH PDF) |
MCP1602
DC CHARACTERISTICS (CONTINUED)
Electrical Characteristics: Unless otherwise indicated, V IN = 3.6V, C OUT = C IN = 4.7 μF, L = 4.7 μH,
V OUT (ADJ) = 1.8V, I OUT = 100 mA, T A = +25°C. Boldface specifications apply for the T A range of -40 o C to +85 o C .
Parameters
Output Voltage Tolerance Fixed
Line Regulation
Sym
V OUT
V LINE-
Min
-2.5
—
Typ
V R
0.3
Max
+2.5
—
Units
%
%/V
Conditions
V IN = V R + 1V to 5.5V,
REG
I OUT = 100 mA
Load Regulation
Internal Oscillator Frequency
Start Up Time
R DSon P-Channel
R DSon N-Channel
L X Pin Leakage Current
V LOAD-
REG
F OSC
T SS
R DSon-P
R DSon-N
I LX
—
1.6
—
—
—
-1.0
0.4
2.0
0.5
450
450
±0.01
—
2.4
—
—
—
1.0
%
MHz
ms
m Ω
m Ω
μA
V IN = V R +1.5V,
T R = 10% to 90%
I P = 100 mA
I N = 100 mA
SHDN = 0V, V IN = 5.5V, L X = 0V,
L X = 5.5V
Positive Current Limit Threshold +I LX(MAX)
—
700
—
mA
Power-Good (PG)
Voltage Range
PG Threshold High
V PG
V TH_H
1.0
1.2
—
—
94
5.5
5.5
96
V
% of
T A = 0°C to +70°C
T A = -40°C to +85°C
V IN ≤ 2.7V, I SINK = 100 μA
On Rising V OUT
V OUT
PG Threshold Low
V TH_L
89
92
—
% of
On Falling V OUT
V OUT
PG Threshold Hysteresis
V TH_HYS
—
2
—
% of
V OUT
PG Threshold Tempco
Δ V TH / Δ T
—
30
—
ppm/°C
PG Delay
t RPD
—
165
—
μs
V OUT = (V TH_H + 100 mV) to
(V TH_L - 100 mV)
PG Active Time-out Period
t RPU
140
262
560
ms
V OUT = (V TH_L - 100 mV) to
(V TH_H + 100 mV), I SINK = 1.2mA
PG Output Voltage Low
PG_V OL
—
—
0.2
V
V OUT = V TH_L - 100 mV,
I PG = 1.2 mA, V IN > 2.7V
I PG = 100 μA, 1.0 < V IN < 2.7V
Note 1:
2:
3:
4:
5:
6:
7:
The minimum V IN has to meet two conditions: V IN ≥ 2.7V and V IN ≥ V OUT + 0.5V.
Reference Feedback Voltage Tolerance applies to adjustable output voltage setting.
V R is the output voltage setting.
Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load
regulation is tested over a load range of 0.1 mA to the maximum specified output current. Changes in
output voltage due to heating effects are covered by the thermal regulation specification.
The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable
temperature and the thermal resistance from junction to air (i.e. T A , T J , θ JA ). Exceeding the maximum
allowable power dissipation causes the device to initiate thermal shutdown.
The internal MOSFET switches have an integral diode from the L X pin to the V IN pin, and from the L X pin
to the GND pin. In cases where these diodes are forward-biased, the package power dissipation limits
must be adhered too. Thermal protection is not able to limit the junction temperature for these cases.
The current limit threshold is a cycle-by-cycle current limit.
? 2007 Microchip Technology Inc.
DS22061A-page 5
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