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SI9185DMP-12-T1 Datasheet(PDF) 1 Page - Vishay Siliconix

No. de pieza SI9185DMP-12-T1
Descripción Electrónicos  Micropower 500-mA CMOS LDO Regulator
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Fabricante Electrónico  VISHAY [Vishay Siliconix]
Página de inicio  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI9185DMP-12-T1 Datasheet(HTML) 1 Page - Vishay Siliconix

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Si9185
Vishay Siliconix
Document Number: 71765
S-20641—Rev. B, 06-May-02
www.vishay.com
1
Micropower 500-mA CMOS LDO Regulator
With Error Flag/Power-On-Reset
FEATURES
D Input Voltage 2 V to 6 V
D Low 150-mV Dropout at 500-mA Load
D Guaranteed 500-mA Output Current
D Uses Low ESR Ceramic Output Capacitor
D Fast Load and Line Transient Response
D Only 100-mV(rms) Noise With Noise Bypass Capacitor
D 1-mA Maximum Shutdown Current
D Built-in Short Circuit and Thermal Protection
D Out-Of-Regulation Error Flag (Power Good or POR)
D Fixed 1.215-V, 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V, 2.9-V,
3.0-V, 3.3-V, 5.0-V, or Adjustable Output Voltage
Options
D Other Output Voltages Available by Special Order
D 1.1-W Power Dissipation
D Thin, Thermally Enhanced MLP33 PowerPAKt
Package
APPLICATIONS
D Laptop and Palm Computers
D Desktop Computers
D Cellular Phones
D PDA, Digital Still Cameras
DESCRIPTION
The Si9185 is a 500-mA CMOS LDO (low dropout) voltage
regulator. The device features ultra low ground current and
dropout voltage to prolong battery life in portable electronics.
The Si9185 offers line/load transient response and ripple
rejection superior to that of bipolar or BiCMOS LDO regulators,
and is designed to drive lower cost ceramic, as well as
tantalum, output capacitors. An external noise bypass
capacitor connected to the device’s CNOISE pin will lower the
LDO’s output noise for low noise applications. The Si9185 also
includes an out-of-regulation error flag. If a capacitor is
connected to the device’s delay pin, the error flag output pin will
generate a delayed power-on-reset signal. The device is
guaranteed stable from maximum load current down to 0-mA
load.
The Si9185 is available in a MLP33 PowerPAK package. This
allows enhanced heat transfer to the PC board. The Si9185 is
specified to operate over the industrial temperature range of
–40
_C to +85_C.
TYPICAL APPLICATIONS CIRCUITS
FIGURE 1. Fixed Output
FIGURE 2. Adjustable Output
FIGURE 3. Low Noise, Full Features Application
CNOISE
SD
18
DELAY
ERROR
27
GND
SENSE/ADJ
36
VIN
VOUT
45
GND
VIN
2.2
mF
2.2
mF
VOUT
Si9185
CNOISE
18
DELAY
ERROR
27
GND
SENSE/ADJ
36
VIN
VOUT
45
GND
VIN
2.2
mF
2.2
mF
VOUT
Si9185
CNOISE
18
DELAY
ERROR
27
GND
SENSE/ADJ
36
VIN
VOUT
45
GND
VIN
2.2
mF
2.2
mF
VOUT
Si9185
POR
ON/OFF
0.1
mF
0.1
mF
1 M
W
SD
SD


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