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PDF Si9181DQ-20-T1-E3 Data sheet ( Hoja de datos )
| Número de pieza | Si9181DQ-20-T1-E3 | |
| Descripción | Micropower 350-mA CMOS LDO Regulator With Error Flag/Power-On-Reset | |
| Fabricantes | Vishay Siliconix | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de Si9181DQ-20-T1-E3 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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Si9181
Vishay Siliconix
Micropower 350-mA CMOS LDO Regulator
With Error Flag/Power-On-Reset
FEATURES
D Low 150-mV Dropout at 350-mA Load
D Guaranteed 350-mA Output Current
D 600-mA Peak Output Current Capability
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 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V, 2.85-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
APPLICATIONS
D Cellular Phones
D Laptop and Palm Computers
D PDA, Digital Still Cameras
DESCRIPTION
The Si9181 is a 350-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 Si9181 offers line/load transient response and ripple
rejection superior to that of bipolar or BiCMOS LDO regulators.
The device is designed to maintain regulation while delivering
600-mA peak current. This is useful for systems that have high
surge current upon turn-on. The Si9181 is designed to drive
the lower cost ceramic, as well as tantalum, output capacitors.
The device is guaranteed stable from maximum load current
down to 0-mA load. In addition, an external noise bypass
capacitor connected to the device’s CNOISE pin will lower the
LDO’s output noise for low noise applications.
The Si9181 also includes an out-of-regulation error flag. When
the output voltage is 5% below its nominal output voltage, the
error flag output goes low. 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 Si9181 is available in both standard and lead (Pb)-free
packages.
TYPICAL APPLICATIONS CIRCUITS
VIN
2.2 mF
GND
1 CNOISE
2 DELAY
SD 8
ERROR 7
3 GND SENSE/ADJ 6
4 VIN
VOUT 5
Si9181
FIGURE 1. Fixed Output
VOUT
2.2 mF
VIN
2.2 mF
GND
1 CNOISE
2 DELAY
SD 8
ERROR 7
3 GND SENSE/ADJ 6
4 VIN
VOUT 5
Si9181
FIGURE 2. Adjustable Output
0.1 mF
VIN
2.2 mF
GND
0.1 mF
1 CNOISE
2 DELAY
SD 8
ERROR 7
3 GND SENSE/ADJ 6
4 VIN
VOUT 5
Si9181
ON/OFF
1 MW
POR
VOUT
2.2 mF
Document Number: 71119
S-40694—Rev. D, 19-Apr-04
FIGURE 3. Low Noise, Full Features Application
VOUT
2.2 mF
www.vishay.com
1
1 page  
Si9181
Vishay Siliconix
ORDERING INFORMATION
Part Number
Lead (Pb)-Free
Part Number Marking Voltage Temperature Range
Si9181DQ-15-T1
Si9181DQ-15-T1—E3
Si9181DQ-18-T1
Si9181DQ-18-T1—E3
Si9181DQ-20-T1
Si9181DQ-20-T1—E3
Si9181DQ-25-T1
Si9181DQ-25-T1—E3
Si9181DQ-28-T1
Si9181DQ-28-T1—E3
Si9181DQ-285-T1 Si9181DQ-285-T1—E3
Si9181DQ-29-T1
Si9181DQ-29-T1—E3
Si9181DQ-30-T1
Si9181DQ-30-T1—E3
Si9181DQ-33-T1
Si9181DQ-33-T1—E3
Si9181DQ-50-T1
Si9181DQ-50-T1—E3
Si9181DQ-AD-T1 Si9181DQ-AD-T1—E3
* Additional voltage options are available.
115
118
120
125
128
285
129
130
133
150
1AD
1.5 V
1.8 V
2.0 V
2.5 V
2.8 V
2.85 V
2.9 V
3.0 V
3.3 V
5.0 V
Adjustable
−40 to 85_C
Package
TSSOP-8
Eval Kit
Si9181DB
Temperature Range
−40 to 85_C
Board Type
Surface Mount
TYPICAL CHARACTERISTICS (INTERNALLY REGULATED, 25_C UNLESS NOTED)
Dropout Voltage vs. Load Current
300
Dropout Characteristic
3.5
250 VOUT = 3.3 V
200
150
100
3.0
RLOAD = 16.5 W
2.5
2.0
1.5
1.0
50 0.5
0
0 100 200 300 400 500 600
ILOAD (mA)
0.0
0123456
VIN (V)
Dropout Voltage vs. Temperature
200
175 VOUT = 3.3 V
IOUT = 350 mA
150 IOUT = 300 mA
125
100
75
50
25
0
−50 −25
0 25 50 75 100
Junction Temperature (_C)
IOUT = 10 mA
IOUT = 0 mA
125 150
Document Number: 71119
S-40694—Rev. D, 19-Apr-04
Dropout Voltage vs. VOUT
300
250
200
IOUT = 350 mA
150
IOUT = 300 mA
100
50
IOUT = 10 mA
0
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT
www.vishay.com
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| PDF Descargar | [ Datasheet Si9181DQ-20-T1-E3.PDF ] | |
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