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MCP1702 数据表(PDF) 4 Page - Microchip Technology

部件名 MCP1702
功能描述  250 mA Low Quiescent Current LDO Regulator
Download  32 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MCP1702 数据表(HTML) 4 Page - Microchip Technology

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MCP1702
DS22008D-page 4
© 2009 Microchip Technology Inc.
Dropout Voltage
(Note 1, Note 5)
VDROPOUT
330
650
mV
IL = 250 mA, VR = 5.0V
525
725
mV
IL = 250 mA, 3.3V ≤ VR < 5.0V
625
975
mV
IL = 250 mA, 2.8V ≤ VR < 3.3V
750
1100
mV
IL = 250 mA, 2.5V ≤ VR < 2.8V
——
mV
VR < 2.5V, See Maximum Output
Current Parameter
Output Delay Time
TDELAY
1000
µs
VIN = 0V to 6V, VOUT = 90% VR
RL = 50Ω resistive
Output Noise
eN
—8
µV/(Hz)1/2
IL = 50 mA, f = 1 kHz, COUT = 1 µF
Power Supply Ripple
Rejection Ratio
PSRR
44
dB
f = 100 Hz, COUT = 1 µF, IL = 50 mA,
VINAC = 100 mV pk-pk, CIN = 0 µF,
VR =1.2V
Thermal Shutdown
Protection
TSD
150
°C
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise specified, all limits are established for V
IN = VOUT(MAX) + VDROPOUT(MAX), Note 1,
ILOAD = 100 µA, COUT = 1 µF (X7R), CIN = 1 µF (X7R), TA = +25°C.
Boldface type applies for junction temperatures, T
J of -40°C to +125°C. (Note 7)
Parameters
Sym
Min
Typ
Max
Units
Conditions
Note 1:
The minimum VIN must meet two conditions: VIN ≥ 2.7V and VIN ≥ VOUT(MAX) + VDROPOUT(MAX).
2:
VR is the nominal regulator output voltage. For example: VR = 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.0V, or 5.0V. The
input voltage VIN = VOUT(MAX) + VDROPOUT(MAX) or VIN = 2.7V (whichever is greater); IOUT = 100 µA.
3:
TCVOUT = (VOUT-HIGH - VOUT-LOW) *10
6 / (V
R * ΔTemperature), VOUT-HIGH = highest voltage measured over the
temperature range. VOUT-LOW = lowest voltage measured over the temperature range.
4:
Load regulation is measured at a constant junction temperature using low duty cycle pulse testing. Changes in output
voltage due to heating effects are determined using thermal regulation specification TCVOUT.
5:
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its measured
value with an applied input voltage of VOUT(MAX) + VDROPOUT(MAX) or 2.7V, whichever is greater.
6:
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., TA, TJ, θJA). 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 the device reliability.
7:
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.


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