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PDF MCP1754S Data sheet ( Hoja de datos )
| Número de pieza | MCP1754S | |
| Descripción | High Performance LDO | |
| Fabricantes | Microchip | |
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MCP1754/MCP1754S
150 mA, 16V, High Performance LDO
Features
• High PSRR: >70 dB @ 1 kHz typical
• 56.0 µA Typical Quiescent Current
• Input Operating Voltage Range: 3.6V to16.0V
• 150 mA Output Current for All Output Voltages
• Low Drop Out Voltage, 300 mV Typical @ 150 mA
• 0.4% Typical Output Voltage Tolerance
• Standard Output Voltage Options (1.8V, 2.5V,
2.8V, 3.0V, 3.3V, 4.0V, 5.0V)
• Output Voltage Range 1.8V to 5.5V in 0.1V
Increments (tighter increments also possible per
design)
• Output Voltage Tolerances of ±2.0% Over Entire
Temperature Range
• Stable with Minimum 1.0 µF Output Capacitance
• Power Good Output
• Shutdown Input
• True Current Foldback Protection
• Short-Circuit Protection
• Overtemperature Protection
Applications
• Battery-powered Devices
• Battery-powered Alarm Circuits
• Smoke Detectors
• CO2 Detectors
• Pagers and Cellular Phones
• Smart Battery Packs
• PDAs
• Digital Cameras
• Microcontroller Power
• Consumer Products
• Battery-powered Data Loggers
Related Literature
• AN765, “Using Microchip’s Micropower LDOs”,
DS00765, Microchip Technology Inc., 2007
• AN766, “Pin-Compatible CMOS Upgrades to
BiPolar LDOs”, DS00766,
Microchip Technology Inc., 2003
• AN792, “A Method to Determine How Much
Power a SOT23 Can Dissipate in an Application”,
DS00792, Microchip Technology Inc., 2001
Description
The MCP1754/MCP1754S is a family of CMOS low
dropout (LDO) voltage regulators that can deliver up to
150 mA of current while consuming only 56.0 µA of
quiescent current (typical). The input operating range is
specified from 3.6V to 16.0V, making it an ideal choice
for four to six primary cell battery-powered applications,
12V mobile applications and one- to three-cell Li-Ion-
powered applications.
The MCP1754/MCP1754S is capable of delivering
150 mA with only 300 mV (typical) of input to output
voltage differential. The output voltage tolerance of the
MCP1754/MCP1754S is typically ±0.4% at +25°C and
±2.0% maximum over the operating junction
temperature range of -40°C to +125°C. Line regulation
is ±0.01% typical at +25°C.
Output voltages available for the MCP1754/MCP1754S
range from 1.8V to 5.5V. The LDO output is stable when
using only 1 µF of output capacitance. Ceramic,
tantalum or aluminum electrolytic capacitors may all be
used for input and output. Overcurrent limit and
overtemperature shutdown provide a robust solution for
any application.
The MCP1754/MCP1754S family introduces a true
current foldback feature. When the load impedance
decreases beyond the MCP1754/MCP1754S load
rating, the output current and voltage will gracefully
foldback towards 30 mA at about 0V output. When the
load impedance decreases and returns to the rated
load, the MCP1754/MCP1754S will follow the same
foldback curve as the device comes out of current
foldback.
Package options for the MCP1754S include the SOT-
23A, SOT-89-3, SOT-223-3 and 2x3 DFN-8.
Package options for the MCP1754 include the SOT-23-
5, SOT-223-5, and 2x3 DFN-8.
© 2011 Microchip Technology Inc.
DS22276A-page 1
1 page  
MCP1754/MCP1754S
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
Input Voltage, VIN..................................................................+17.6V
VIN, PWRGD, SHDN ..................... (GND-0.3V) to (VIN+0.3V)
VOUT .................................................. (GND-0.3V) to (+5.5V)
Internal Power Dissipation ............ Internally-Limited (Note 6)
Output Short Circuit Current ................................. Continuous
Storage temperature .....................................-55°C to +150°C
Maximum Junction Temperature ......................165°C(Note 7)
Operating Junction Temperature...................-40°C to +150°C
ESD protection on all pins ..........≥ 4 kV HBM and ≥ 200V MM
† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
AC/DC CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits are established for VIN = VR + 1V, Note 1, ILOAD = 1 mA, COUT =
1 µF (X7R), CIN = 1 µF (X7R), TA = 25°C, tr(VIN) = 0.5V/µs, SHDN = VIN, PWRGD = 10K to VOUT.
Boldface type applies for junction temperatures, TJ (Note 7) of -40°C to +125°C.
Parameters
Sym
Min Typ Max
Units
Conditions
Input / Output Characteristics
Input Operating Voltage
VIN 3.6 — 16.0
Output Voltage Operating VOUT-RANGE
Range
1.8
—
5.5
V
V
Input Quiescent Current
Input Quiescent Current
for SHDN mode
Iq
ISHDN
— 56
— 0.1
90
5
µA IL = 0 mA
µA SHDN = GND
Ground Current
Maximum Output Current
Output Soft Current Limit
IGND
IOUT_mA
IOUT_CL
— 150
150 —
— 250
250
—
—
µA ILOAD = 150 mA
mA
mA VIN = VIN(MIN), VOUT ≥ 0.1V,
Current measured 10 ms after
load is applied
Output Pulse Current Limit IOUT_CL
— 250
—
mA Pulse Duration < 100 ms, Duty
Cycle < 50%, VOUT ≥ 0.1V,
Note 6
Output Short Circuit
Foldback Current
IOUT_SC
— 30
—
mA VIN = VIN(MIN), VOUT = GND
Output Voltage Overshoot
on Startup
VOVER
— 0.5 — %VOUT VIN = 0 to 16V, ILOAD = 150 mA
Note 1:
2:
3:
4:
5:
6:
7:
The minimum VIN must meet two conditions: VIN ≥ 3.6V and VIN ≥ VR + VDROPOUT(MAX).
VR is the nominal regulator output voltage when the input voltage VIN = VRated + VDROPOUT(MAX) or ViIN = 3.6V (which-
ever is greater); IOUT = 1 mA.
TCVOUT = (VOUT-HIGH - VOUT-LOW) *106 / (VR * ΔTemperature), VOUT-HIGH = highest voltage measured over the
temperature range. VOUT-LOW = lowest voltage measured over the temperature range.
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.
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal VR
measured value. The nominal VR measured value is obtained with
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.
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.
© 2011 Microchip Technology Inc.
DS22276A-page 5
5 Page 
MCP1754/MCP1754S
Note:
Unless otherwise indicated VR = 3.3V, COUT = 1 µF Ceramic (X7R), CIN = 1 µF Ceramic (X7R), IL = 1 mA, TA = +25 °C,
VIN = VR + 1V or VIN = 3.6V (whichever is greater), SHDN = VIN, package = SOT223.
0.500
0.400
0.300
0.200
0.100
VOUT = 3.3V
+25°C
+90°C
+130°C
0°C
-45°C
0.000
0
15 30 45 60 75 90 105 120 135 150
Load Current (mA)
FIGURE 2-13:
Current.
Dropout Voltage vs. Load
FIGURE 2-16:
Dynamic Line Response.
0.400
0.350
0.300
0.250
0.200
0.150
0.100
0.050
0.000
0
VOUT = 3.3V
+25°C
+90°C
-45°C
+130°C
0°C
15 30 45 60 75 90 105 120 135 150
Load Current (mA)
FIGURE 2-14:
Current.
Dropout Voltage vs. Load
50
40
30
20
10
0
4
6
FIGURE 2-17:
Input Voltage.
0°C
25°C
90°C
130°C
-45°C
VOUT = 3.3V
8 10 12 14 16
Input Voltage (V)
Short Circuit Current vs.
FIGURE 2-15:
Dynamic Line Response.
© 2011 Microchip Technology Inc.
DS22276A-page 11
11 Page | ||
| Páginas | Total 42 Páginas | |
| PDF Descargar | [ Datasheet MCP1754S.PDF ] | |
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